Rockford Fosgate Car Amplifier 5002 User Guide

500.2  
power  
®
®
c a r a u d i ofor  
new  
chrome  
heatsink  
f a n a t i c s  
competition Power amplifier  
Operation & Installation  
®
 
T
ABL E O F  
C
O N T E N T S  
Introduction................................................................................................................................................................. 1  
Accessory Pack ........................................................................................................................................................... 1  
Technical Design Features............................................................................................................................................. 2  
Design Features ........................................................................................................................................................... 5  
Installation Considerations ............................................................................................................................................ 7  
Mounting Locations...................................................................................................................................................... 8  
Battery and Charging ................................................................................................................................................... 8  
Wiring the System ........................................................................................................................................................ 9  
Using Passive Crossovers ............................................................................................................................................ 10  
Table of Crossover Components ................................................................................................................................... 11  
Using the XCard ......................................................................................................................................................... 12  
Customizing the XCard ............................................................................................................................................... 12  
XCard Resistor Chart................................................................................................................................................... 13  
XCard Configurations.................................................................................................................................................. 14  
Installation ................................................................................................................................................................ 16  
Using the Balanced Line Inputs .................................................................................................................................... 19  
Rockford Fosgate Accessories ...................................................................................................................................... 21  
Troubleshooting ......................................................................................................................................................... 23  
Autosound 2000s Quick Check for Troubleshooting....................................................................................................... 25  
Dynamic Power Measurements.................................................................................................................................... 27  
500.2 Specifications .................................................................................................................................................. 28  
Warranty Information ................................................................................................................................................. 29  
International Information ............................................................................................................................................. 30  
G
E T T I N G  
S
T A R T E D  
Welcome to Rockford Fosgate! This manual is designed to provide information for the owner, salesperson and installer. For  
those of you who want quick information on how to install this product please turn to the Installation section of this manual  
or refer to the icons listed below. Other information can be located by using the Table of Contents. We, at Rockford Fosgate,  
have worked very hard to make sure all the information in this manual is current. But, as we are constantly finding new ways  
to improve our product, this information is subject to change without notice.  
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Sections marked  
ADVANCED  
OPERATION  
include in-depth  
technical information  
Sections marked  
INSTALLATION  
include slam dunk”  
wiring connections  
Sections marked  
TROUBLESHOOTING  
include recommendations  
for curing installation  
problems  
 
INTRODUCTION  
The Punch Power series of amplifiers represent the best Rockford Fosgate has to offer! Our engineers devised technical  
features which would be considered overkill by other audio manufacturers, but not at Rockford Fosgate! Transnova,  
DIAMOND, andTOPAZ, exclusivelydesignedbyRockford, arejusta fewofthesefeatureswhicharedescribedintheTechnical  
Design Features section of this manual.  
ACCESSORY PACK  
The accessory pack includes the mounting hardware necessary to secure the amplifier to the vehicle and to attach the end  
caps to the amplifier.  
Punch Power 500.2  
Installation & Operation Manual  
Punch Verification Certificate  
(4) Amplifier mounting screws (#8 x 34" phillips)  
(4) Speaker connector screws (3/32" allen)  
(2) Power connector screws (1/8" allen)  
(4) End cap mounting screws (9/64" allen)  
(1) Allen wrench 3/32" (speaker)  
(1) Allen wrench 9/64" (end cap)  
(1) Allen wrench 1/8" (power)  
– 1 –  
 
TECH NICAL  
D
ESIGN FEATURES  
transnova (TRANSconductance NOdal Voltage Amplifier)  
The transnova (TRANS conductance NOdal Voltage Amplifier) is a patented circuit (U.S. Patent 4,467,288) that allows  
the audio signal to pass through the amplifier at low voltage. Each amplifier channel utilizes its own “fully floating” power  
supply and is configured to increase power gain. The increase in power gain allows the drive stage to operate at a lower  
voltage. A low voltage drive stage is the same principle used in high quality preamplifiers to produce high linearity and wide  
bandwidth.  
E-I  
I-E  
transnova circuitry  
The resulting design utilizes an output stage with a simpler gain structure and a shorter total signal path than conventional  
high voltage (bi-polar) designs. The number of stages is reduced from five or more to three. The output stage is further refined  
into a trans-impedance stage (current to voltage converter) to achieve a short loop (fast) negative feedback. The output stage  
is driven cooperatively by a transconductance stage (voltage to current converter).  
THE RESULT: Superior sound quality, greater efficiency and higher reliability.  
DIAMOND (Dynamically Invariant AMplification Optimized Nodal Drive)  
DIAMOND (Dynamically Invariant AMplificiation Optimized Nodal Drive - patent pending) is an important advance in circuit  
design which reduces high frequency distortion. Amplifiers which utilize a large array of output MOSFETs cause a high  
capacitive load on the driver stage. This load can make the high frequencies sound harsh. The DIAMOND circuit eliminates  
highfrequencydistortionbyallowingthedrivertooperatewith20dBormoreofcurrentheadroom, whereastraditionaldrivers  
have only 6dB of current headroom.  
THE RESULT: Lower distortion and greater inherent stability.  
MEHSA (Maximum Efficiency Heat Sink Application)  
The MEHSA (Maximum Efficiency Heat-Sink Application) is a proprietary process that yields up to 5 times better heat transfer  
than traditional FET mounting techniques using the exact same components. A multi-layer insulated metal substrate  
operatingwithminimalthermalresistancespreadsheatbothdownward&outwardtoquicklydissipateheatfromeachdevice  
across the heat sink. This process combined with our DSM technology and MOSFET devices allow us to squeeze more watts  
per cubic inch from every output device as well as provide consistent thermal stability.  
THE RESULT: Optimized power output, enhanced thermal stability, and maximum component reliability.  
– 2 –  
 
TOPAZ (Tracking Operation Pre-Amplifier Zone)  
The TOPAZ (Tracking Operation Pre-Amplifier Zone) circuitry solves ground loop noise problems common to automotive  
amplifier design. This innovative new development allows vastly improved isolation of the input signal grounds from the  
power supply ground of the amplifier. This is accomplished by allowing the source unit to control the potential environment”  
of the entire input structure or “zone” of the amplifier. This process improves the noise rejection of the amplifier by 30-40dB  
– an astounding 20-100 times better than amplifiers without TOPAZ.  
THE RESULT: Elimination of troublesome ground loop noise between source and amplifier.  
DSM (Discrete Surface Mount Technology)  
The DSM (Discrete Surface Mount) manufacturing process combines the advantages of both discrete components and  
integrated circuitry. Rockford Fosgate is the only American amplifier manufacturer to have invested millions into this process.  
DSM components differ from conventional discrete components in different ways. They are more compact, more rugged,  
and they efficiently dissipate generated heat. Using them wherever appropriate allows the advantages associated with  
discrete circuitry to be retained while also providing room for both highly advanced processing features and generous PC  
board copper paths where needed. Their short lead-out structures allow maximum audio performance and highest signal-  
to-noise ratios to be obtained in amplifiers of desirable package size without resorting to “amplifier-on-a-chip” shortcuts. These  
advantages are shown below in Figure 1.  
Component  
Figure 1  
Solder  
Solder  
PC Board  
PC Board  
Thru-Hole  
Surface Mount  
THE RESULT: Less connections, improved reliability, shorter signal paths, superior signal-to-noise ratio and awesome sonic  
performance.  
XCard (Internal Crossover)  
The Power amplifiers utilize internal active crossovers. These crossovers have many performance advantages such as using  
discrete components for exact frequency adjustments which are far superior to potentiometers. Additionally, the XCard can  
be configured for high-pass, low-pass and full range operation. With slight modification, many crossover frequencies and  
slope configurations can be achieved.  
THE RESULT: Increased system design flexibility with a precise electronic crossover without the limitations of conventional  
potentiometer designs.  
Stereo Pass-Thru  
The Pass-Thru output provides a convenient source for daisy-chaining an additional amplifier without the need for extra RCA  
cables or Yadapters. The original signal(s) fed into the input jack(s) are looped back to the Pass-Thru outputs allowing  
less signal cable to be used. This results in cleaner system designs and reduces noise pick-up.  
THE RESULT: Convenient signal level output for adding extra amplifiers.  
– 3 –  
 
Bass EQ  
The Bass EQ helps correct for acoustical deficiencies in the listening environment. A unique potentiometer that controls bass  
compensates for the lack of low frequencies present in most car environments. Unlike a conventional tone control, the Bass  
EQ corrects for the specific problem of poor low bass response.  
THE RESULT: Provides better low bass response.  
Balanced Line Inputs  
Using the Balanced Line Inputs provides the last word in achiev-  
Figure 2  
Center  
RCA Input  
Differential  
Input  
able rejection of noise induced in the cable between the source  
and the amplifier. The differential input circuitry (Figure 2) used  
in the balanced input system rejects whatever signals are  
common to both of the shielded, twisted-pair conductors. Bal-  
anced line is universal in concert installations where the stage  
and mixing consoles are hundreds of feet apart. Long signal  
cables and electrically-noisy environments make signal integrity  
and noise rejection an extremely difficult challenge.  
Conductor  
Outer  
Shield  
Differential inputs only amplify the difference between two conductors.  
Note: the noise spikes appear on both the center conductor and the outer  
shield and therefore are not amplified.  
THE RESULT: Quiet transmission of audio from source to amplifier.  
NOMAD (NOn-Multiplying Advanced Decision)  
The Power amplifiers use an analog computer process to absolutely maximize safe output power under all operating  
conditions. The innovative NOMAD (NOn-Multiplying Advanced Decision) system is the most sophisticated version of this  
technique ever used, bringing previously unavailable levels of accuracy, stability, temperature immunity and reliability to  
this critical process. NOMAD makes advanced decisions based on device voltages to precisely control the awesome levels  
of current available in the output MOSFETs to safe values – but only when absolutely needed.  
THE RESULT: Extremely fast protection system that always protects the amplifier and never degrades the sound.  
MOSFET Devices (Metal Oxide Semiconductor Field Effect Transistor)  
RockfordFosgateisoneofthefewmanufacturersinanyofthesoundcommunitiestoutilizeMOSFETdevicesinboththepower  
supply and the output stages. MOSFET (Metal Oxide Semiconductor Field Effect Transistor) devices offer several important  
inherent advantages over the 30 year old technology of bi-polar design. These advantages include: thermal stability,  
switching speed, ultra low output impedance and wider bandwidth linearity. In addition, MOSFET and vacuum tubes share  
many important operating characteristics. However, the MOSFET device is much faster, wider in bandwidth, measurably  
lower in distortion and far more linear than vacuum tubes.  
THE RESULT: Operational characteristics of vacuum tubes without the performance limitations of tube design.  
– 4 –  
 
D
E SI G N FE AT U R E S  
1. Cast Aluminum Chrome Heatsink – The cast aluminum heatsink of the Punch Power amplifier dissipates heat  
generated by the amplifier's circuitry. The inherent advantage of casting provides a 30% improvement of cooling over  
conventional extrusion heatsink designs.  
2. End Caps – The unique end caps conceal the wiring and input cables, giving the amplifier a clean stealth” look.  
3
13  
8
6
7
12  
3
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Speaker  
+
L
L
R
+
Balanced  
– 180°  
Unbalanced  
0
Pass Thru Pass Thru  
EZ Bridged 180°- 0°  
10  
10  
11  
9
LED  
REM  
B+  
GND  
5
4
4
15  
3. Speaker Terminals – The heavy duty, gold-plated terminal block connectors (+ and –) will accept wire sizes from  
8 AWG to 18 AWG. These gold-plated connectors are immune to corrosion that can cause signal deterioration.  
4. Power Terminals – The heavy duty, gold-plated power and ground connectors will accommodate 4 AWG wire for  
maximum input current capability.  
5. REM Terminal – This gold-plated spade terminal is used for the AP (auto power) or remote turn on of the amplifier.  
6. RCA Input Jacks – The industry standard RCA jack provides an easy connection for signal level input. They are gold-  
plated to resist the signal degradation caused by corrosion.  
7. Balanced Line Input– This input will allow the Balanced Line Transmitter (BLT) or any balanced Rockford Fosgate  
source unit/signal processor to be used in conjunction with the amplifier to provide better noise rejection.  
8. Signal Input Switch – This switch allows selection of either the RCA or Balanced Line inputs.  
9. RCA Pass-Thru Jacks – The Pass-Thru provides a convenient source for daisychaining an additional amplifier,  
eliminating the need for Yadapters. The original signal(s) fed into input jack(s) are looped back to the Pass-Thru  
output(s).  
10. Input Sensitivity Controls – The input level controls are preset to match the output of most source units. They can  
be adjusted to match output levels from a variety of source units.  
– 5 –  
 
11. Bass EQ Control – The Bass EQ allows a narrow band adjustment of up to +18dB centered at 45Hz. The bass boost can  
be bypassed by turning the control to its minimum or counterclockwise position.  
12. E-Z Bridge Switch / 0°-180° Phase Switch – This dual purpose switch enables you to E-Z bridge the amplifier or invert  
the signal phase of the right channel.  
13. Phase Switch – This switch enables you to easily invert the phase of the left channel without having to disconnect the  
speaker wires.  
14. Internal Crossovers – These built-in crossover cards are configurable for a multitude of operating frequencies. The  
orientation of the card in its socket determines its function of high-pass, low-pass or full range operation.  
15. LED Power Indicator – The LED gives a visual indication of the status of the amplifier, lighting when the unit is turned on.  
– 6 –  
 
I
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O N SI D ERATI O N S  
Tools Needed  
The following is a list of tools you will need for installing the Punch Power amplifier:  
Allen wrenches 9/64" , 3/32" & 1/8" (included)  
Wire strippers  
Wire Cutters  
Voltmeter  
Battery post wrench  
Wire crimpers  
Assorted connectors  
Electric hand drill and assorted bits  
This section focuses on some of the vehicle considerations for installing your new Punch amplifier. Checking your battery  
and present sound system, as well as pre-planning your system layout and best wiring routes will save installation time.  
When deciding on the layout of your new system, be sure that each component will be easily accessible for making  
adjustments.  
Before beginning any installation, be sure to follow these simple rules:  
1. Carefully read and understand the instructions before attempting to install the amplifier.  
2. For safety, disconnect the negative lead from the battery prior to beginning the installation.  
3. For easier assembly, we suggest you run all wires prior to mounting your amplifier in place.  
4. Route all of the RCA cables close together and away from any high current wires.  
5. Use high quality Connecting Punch accessories for a reliable installation and to minimize signal or power loss.  
6. Think before you drill! Be careful not to cut or drill into gas tanks, fuel lines, brake or hydraulic lines, vacuum  
lines or electrical wiring when working on any vehicle.  
7. Never run wires underneath the vehicle. Running the wires inside the vehicle provides for best protection.  
8. Avoid running wires over or through sharp edges. Use rubber or plastic grommets to protect any wires routed  
through metal, especially the firewall.  
9. ALWAYS protect the battery and electrical system from damage with proper fusing. Install a fuseholder and fuse  
on the +12V power wire within 18" (45.7cm) of the battery terminal.  
10. When grounding to the chassis of the vehicle, scrape all paint from the metal to ensure a good, clean ground  
connection. Grounding connections should be as short as possible and always be connected to metal that is  
welded to the main body, or chassis, of the vehicle.  
– 7 –  
 
M
O UNTING LO CATIO N S  
The mounting location and position of your amplifier will have a great effect on its ability to dissipate the heat generated  
under normal operation. The design of our cast aluminum heatsink serves to easily dissipate the heat generated over a wide  
range of operating conditions. However, to maximize the performance of your amplifier, care should be taken to ensure  
adequate ventilation.  
Trunk Mounting  
Mounting the amplifier vertically on a surface with the fin grooves running up and down will provide the best cooling of the  
amplifier.  
Mounting the amplifier on the floor of the trunk will work but provides less cooling capability than vertical mounting.  
Mounting the amplifier upside down to the rear deck of the trunk will not provide proper cooling and will severely affect the  
performance of the amplifier and is strongly not recommended.  
Passenger Compartment Mounting  
Mounting the amplifier in the passenger compartment will work as long as you provide a sufficient amount of air for the  
amplifier to cool itself. If you are going to mount the amplifier under the seat of the vehicle, you must have at least 1"  
(2.54cm) of air gap around the amplifier's heatsink.  
Mounting the amplifier with less than 1" (2.54cm) of air gap around the heatsink in the passenger compartment will not  
provide proper cooling and will severely affect the performance of the amplifier and is strongly not recommended.  
Engine Compartment Mounting  
Rockford Fosgate amplifiers should never be mounted in the engine compartment. Not only will this void your warranty  
but could create an embarrassing situation caused by the ridicule from your friends.  
BATTERY AN D  
C
H ARG IN G  
Amplifiers will put an increased load on the vehicle's battery and charging system. We recommend checking your alternator  
and battery condition to ensure that the electrical system has enough capacity to handle the increased load of your stereo  
system.  
NOTE: This amplifier utilizes a large array of power supply capacitance and can draw substantial current at turn-on.  
The dashboard BATTERY VOLTAGE and/or ALTERNATOR CHARGE lamp may illuminate for a brief period while  
momentarily recharging the capacitor bank. This may be most noticeable when the amplifier is off for at least a day  
or two and is considered normal operation.  
– 8 –  
 
W
I R I N G  
T
H E SY S T E M  
CAUTION: Avoid running power wires near the low level input cables, antenna, power leads, sensitive equipment or  
harnesses. The power wires carry substantial current and could induce noise into the audio system.  
1. Configure the internal XCard crossovers prior to installation. Refer to the XCard Configurations on pages 14 & 15 for  
further information.  
2. Plan the wire routing. Take care when running signal level RCA cables to keep them close together but isolated from  
the amplifier's power cables and any high power auto accessories, especially electric motors. This is done to prevent  
coupling the noise from radiated electrical fields into the audio signal. When feeding the wires through the firewall or  
any metal barrier, protect them with plastic or rubber grommets to prevent short circuits. Leave the wires long at this  
point to adjust for a precise fit at a later time.  
3. Prepare the Power cable for attachment to the amplifier by stripping 5/8"  
INSULATION  
STRIP WIRE  
>
>
of insulation from the end of the wire. The use of 4 gauge power cable can  
interfere with the installation of the end caps. Proper wire dress can prevent  
this from occurring. To prevent the wire from fraying, strip the insulation at  
a 45° angle. Insert the bared wire into the B+ terminal with the long side  
of the insulation on the top. Bend the cable down at a 90° angle. Tighten  
the set screw to secure the cable in place. We recommend using 4 gauge  
cables forpowerandforground. This willgive youthe bestperformance  
possible.  
<
>
5/8"  
AMP  
>
4. Strip 3/8" from the battery end of the power cable and crimp a large ring terminal to the cable. Use the ring terminal  
to connect to the battery positive terminal. Do not install the fuse at this time.  
5. Prepare a length of cable to be used for the ground connection. Strip 5/8" of insulation from the end of the cable as  
described above and connect to the ground terminal of the amplifier. Prepare the chassis ground by scraping any paint  
from the metal surface and thoroughly clean the area of all dirt and grease. Strip the other end of the cable and attach  
a ring connector. Fasten the cable to the chassis using a non-anodized screw and a star washer.  
6. Prepare the REM turn-on wire for connection to the amplifier by stripping 1/4" of insulation from the wire end and  
crimping an insulated spade connector in place. Slide the connector over the REM terminal on the amplifier. Connect  
the other end of the REM wire to a switched 12 volt positive source. The switched signal is usually taken from the source  
unit's auto antenna or the accessory lead. If the source unit does not have these outputs available, the recommended  
solution is to wire a mechanical switch in line with a 12 volt source to activate the amplifier.  
7. Securely mount the amplifier (with supplied screws) to the vehicle or amp rack. Be careful not to mount the amplifier  
on cardboard or plastic panels. Doing so may enable the screws to pull out from the panel due to road vibrations or  
sudden vehicle stops.  
8. Connect the source signal to the amplifier by plugging the RCA cables into the input jack(s) at the amplifier. If using  
Balanced Line Inputs, refer to pages 19 & 20.  
9. Connect the speakers. Strip the speaker wires 5/8" and insert into the appropriate terminal on the amplifier. Insert the  
bared wire into the speaker terminal and tighten the set screw to secure into place. Be sure to maintain proper speaker  
polarity. DO NOT chassis ground any of the speaker leads as unstable operation may result.  
10. Perform a final check of the completed system wiring to ensure that all connections are accurate. Check all power and  
ground connections for frayed wires and loose connections which could cause problems from road vibrations.  
– 9 –  
 
11. After the final inspection is complete, install the power fuse and enjoy listening. During the initial listening period, you  
may need to fine tune” any phasing and level settings within your particular vehicle. To aid in this procedure, play a  
track with high musical content and cruise around your neighborhood. After fully evaluating the transient response of  
your system and making any final adjustments, all your neighbors within a 1 mile radius will assume that you have  
just successfully completed another upgrade to your audio system for which they will probably spill thumbtacks on your  
driveway.  
NOTICE!  
Amplifiers using the trans• nova topology improve in sound quality after  
warming up. We recommend operating the amplifier for approximately 15  
minutes prior to evaluation under judging criteria or tune-ups to establish its  
normal operating temperature.  
* Your friends will call it MAGIC, you can call it Rockford technology! *  
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USING PASSIVE CROSSOVERS  
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A passive crossover is a circuit that uses capacitors and/or coils and is placed on speaker leads between the amplifier and  
speaker. The crossover delegates a specific range of frequencies to the speaker for optimum driver performance. A crossover  
network can perform one of three functions: High-Pass (capacitors), Low-Pass (inductors or coils) and Bandpass  
(combination of capacitor and coil).  
The most commonly used passive crossover networks are 6dB/octave systems. These are easy to construct and require one  
component per filter. Placing this filter in series with the circuit will reduce power to the speaker by 6dB/octave above or  
below the crossover point depending on whether it is a high-pass or low-pass filter. More complex systems such as 12dB/  
octave or 18dB/octave can cause impedance problems if not professionally designed.  
Passive crossovers are directly dependent upon the speaker's impedance and component value for accuracy. When passive  
crossover components are used in multiple speaker systems, the crossover's effect on the overall impedance should be taken  
into consideration along with the speaker's impedance when determining amplifier loads.  
– 10 –  
 
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TABLE OF CROSSOVER COMPONENT VALUES  
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L
C
6dB/Octave High-Pass  
6dB/Octave Low-Pass  
Freq.  
Speaker Impedance  
(Hertz)  
2 OHMS  
8 OHMS  
4 OHMS  
L
C
L
C
L
C
80  
100  
130  
4.1mH  
3.1mH  
2.4mH  
1000µF  
800µF  
600µF  
8.2mH  
6.2mH  
4.7mH  
500µF  
400µF  
300µF  
16mH  
12mH  
10mH  
250µF  
200µF  
150µF  
200  
260  
400  
1.6mH  
1.2mH  
.8mH  
400µF  
300µF  
200µF  
3.3mH  
2.4mH  
1.6mH  
200µF  
150µF  
100µF  
6.8mH  
4.7mH  
3.3mH  
100µF  
75µF  
50µF  
600  
800  
1000  
.5mH  
.41mH  
.31mH  
136µF  
100µF  
78µF  
1.0mH  
.82mH  
.62mH  
68µF  
50µF  
39µF  
2.0mH  
1.6mH  
1.2mH  
33µF  
26µF  
20µF  
1200  
1800  
4000  
.25mH  
.16mH  
.08mH  
66µF  
44µF  
20µF  
.51mH  
.33mH  
.16mH  
33µF  
22µF  
10µF  
1.0mH  
.68mH  
.33mH  
16µF  
10µF  
5µF  
6000  
9000  
12000  
51µH  
34µH  
25µH  
14µF  
9.5µF  
6.6µF  
.10mH  
68µH  
51µH  
6.8µF  
4.7µF  
3.3µF  
.20mH  
.15mH  
100µH  
3.3µF  
2.2µF  
1.6µF  
6 dB/Octave High-Pass and Low-Pass Filters  
L = Low-Pass (Inductor)  
C = High-Pass (Capacitor)  
For more information, see your Authorized Rockford Fosgate Dealer.  
– 11 –  
 
U
SI N G T H E XCARD  
The crossover functions are controlled through the use of an XCard and can be set for high-pass, low-pass or full range  
operation. The XCard shipped with your amplifier is set for Full Range. Each crossover card has two faces: one face operates  
Full Range, the other has arrows to indicate the edge for selecting HP (high-pass) or LP (low-pass) operation. Orient the  
card with the desired operating edge, indicated by the arrow, toward the socket terminals inside the amplifier. Firmly, but  
carefully, plug the card into the socket.  
High-Pa ss  
Low-Pa ss  
Full Range  
H P  
LP  
L P  
HP  
FULL  
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U ST O M I ZI N G T H E XCARD  
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The crossover point can be altered by changing the 4 resistor values. Use the following formula to select the appropriate  
resistor value to be placed on the XCard.  
3386  
1
The actual formula is: R =  
= R (in k) for .047µf cap  
f
2πf c  
o
o
Where: R = Ω  
f = desired crossover frequency  
7234  
o
= R (in k) for .022µf cap  
c = capacitor in farads  
f
o
-6  
ex: .047 x 10 for .047µf cap  
Crossover Card  
HiPass  
FULL  
LoPass  
Full Range  
– 12 –  
 
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XC ARD RESISTO R  
C
H ART  
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n
Our tests have shown that using 0.047µf capacitors for frequencies below 100Hz, and 0.022µf capacitors for frequencies  
above 100Hz, result in more linear crossover control. Refer to the Specifications page to determine the capacitor value  
of each supplied XCard.  
Butterworth Alignment Q = .707  
Butterworth Alignment Q = .707  
1% resistors used with 0.047µF capacitors  
1% resistors used with 0.022µF capacitors  
Frequency  
20Hz  
R1  
R2  
Frequency  
20Hz  
R1  
R2  
357kΩ  
287kΩ  
237kΩ  
205kΩ  
178kΩ  
162kΩ  
143kΩ  
130kΩ  
121kΩ  
110kΩ  
102kΩ  
95.3kΩ  
90.9kΩ  
84.5kΩ  
80.6kΩ  
35.7kΩ  
23.7kΩ  
17.8kΩ  
14.3kΩ  
12.1kΩ  
10.2kΩ  
9.9kΩ  
357kΩ  
287kΩ  
237kΩ  
205kΩ  
178kΩ  
162kΩ  
143kΩ  
130kΩ  
121kΩ  
110kΩ  
102kΩ  
95.3kΩ  
90.9kΩ  
84.5kΩ  
80.6kΩ  
35.7kΩ  
23.7kΩ  
17.8kΩ  
14.3kΩ  
12.1kΩ  
10.2kΩ  
9.9kΩ  
169kΩ  
133kΩ  
110kΩ  
95.3kΩ  
84.5kΩ  
75kΩ  
169kΩ  
133kΩ  
110kΩ  
95.3kΩ  
84.5kΩ  
75kΩ  
25Hz  
25Hz  
30Hz  
30Hz  
35Hz  
35Hz  
40Hz  
45Hz  
40Hz  
45Hz  
50Hz  
50Hz  
55Hz  
60Hz  
65Hz  
70Hz  
75Hz  
80Hz  
85Hz  
90Hz  
200Hz  
300Hz  
400Hz  
500Hz  
600Hz  
700Hz  
800Hz  
900Hz  
1.0kHz  
1.2kHz  
2kHz  
68.1kΩ  
61.9kΩ  
56.2kΩ  
52.3kΩ  
48.7kΩ  
45.3kΩ  
42.2kΩ  
40.2kΩ  
37.4kΩ  
16.9kΩ  
11.3kΩ  
8.45kΩ  
6.65kΩ  
5.62kΩ  
4.75kΩ  
4.22kΩ  
3.74kΩ  
3.40kΩ  
2.80kΩ  
1.69kΩ  
1.10kΩ  
845Ω  
68.1kΩ  
61.9kΩ  
56.2kΩ  
52.3kΩ  
48.7kΩ  
45.3kΩ  
42.2kΩ  
40.2kΩ  
37.4kΩ  
16.9kΩ  
11.3kΩ  
8.45kΩ  
6.65kΩ  
5.62kΩ  
4.75kΩ  
4.22kΩ  
3.74kΩ  
3.40kΩ  
2.80kΩ  
1.69kΩ  
1.10kΩ  
845Ω  
55Hz  
60Hz  
65Hz  
70Hz  
75Hz  
80Hz  
85Hz  
90Hz  
200Hz  
300Hz  
400Hz  
500Hz  
600Hz  
700Hz  
800Hz  
900Hz  
1.0kHz  
1.2kHz  
2.0kHz  
3.0kHz  
4.0kHz  
5.0kHz  
6.0kHz  
7.0kHz  
8.0kHz  
86kΩ  
86kΩ  
7.15kΩ  
6.04kΩ  
3.57kΩ  
2.37kΩ  
1.76kΩ  
1.43kΩ  
1.21kΩ  
10.2kΩ  
909Ω  
7.15kΩ  
6.04kΩ  
3.57kΩ  
2.37kΩ  
1.76kΩ  
1.43kΩ  
1.21kΩ  
10.2kΩ  
909Ω  
3kHz  
4kHz  
5kHz  
665Ω  
665Ω  
6kHz  
562Ω  
562Ω  
7kHz  
487Ω  
487Ω  
8kHz  
422Ω  
422Ω  
– 13 –  
 
XCARD  
C
O NFIGURATIO NS  
Bypassing the Crossover  
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Balanced  
Unbalanced  
Speaker  
+
L
L
R
+
0 – 180°  
Pass Thru Pass Thru  
EZ Bridged  
180°- 0°  
20Hz-20kHz  
Full Range  
20Hz-20kHz  
Full Range  
XCard 1 inserted as Full Range  
XCard 2 inserted as Full Range  
Configuring a 12dB/octave Filter  
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Balanced  
Unbalanced  
Speaker  
+
L
L
R
+
0 – 180°  
Pass Thru Pass Thru  
EZ Bridged 180°- 0°  
20Hz-80Hz  
12dB/octave LP  
20Hz-80Hz  
12dB/octave LP  
XCard 1 inserted as Full Range  
XCard 2 inserted as HP or LP  
– 14 –  
 
Configuring a 24dB/octave Filter  
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Balanced  
Unbalanced  
Speaker  
+
L
L
R
+
0 – 180°  
Pass Thru Pass Thru  
EZ Bridged 180°- 0°  
20Hz-80Hz  
24dB/octave LP  
20Hz-80Hz  
24dB/octave LP  
XCards 1 & 2 inserted identically as HP or LP  
NOTE: Both XCards must be customized to the same frequency for proper 24dB/octave operation.  
Configuring a 12dB/octave Bandpass Filter  
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Balanced  
Unbalanced  
Speaker  
+
L
L
R
+
0 – 180°  
Pass Thru Pass Thru  
EZ Bridged  
180°- 0°  
80Hz-400Hz  
12dB/octave Bandpass  
80Hz-400Hz  
12dB/octave Bandpass  
XCard 1 inserted as HP  
XCard 2 inserted as LP  
NOTE: The amplifier is shipped with 80Hz XCards.x2 At least one of the XCards must be customized to enable proper  
bandpass operation. Refer to “Using the XCard” on page 12 for more information or contact your local Authorized  
Rockford Fosgate Dealer for customized XCards.  
– 15 –  
 
I
®
N
S
T
A
L
L
A
T
I
INSTALLATION  
O
N
Power Connections  
LED  
REM  
B+  
GND  
Connect to remote  
turn-on lead of  
source unit.  
Connect to chassis  
ground of vehicle*  
Less than 18"  
(45cm)  
+
Connect to B+ of battery with a  
100 amp or (2) 50 amp fuses  
NOTE: We recommend using 4 gauge cables  
for power and for ground. This will give you  
the best performance possible.  
*Keep wire as short as possible.  
– 16 –  
 
I
®
N
S
T
A
L
L
A
T
I
Stereo Operation  
RCA  
O
N
Input  
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Speaker  
+
L
L
R
+
0
– 180°  
Balanced  
Pass Thru Pass Thru  
EZ Bridged  
Unbalanced  
180°- 0°  
2Min.  
2Min.  
+
+
RCA inputs are connected to both left and right channels  
Signal Input Switch selected to Unbalanced for RCA input  
Left Phase Switch set to 0°  
Right Phase Switch set to 0°  
Gain for left and right channels operate independently  
Impedance for each channel should be 2minimum  
XCard can be High-Pass, Low-Pass or Full Range position  
Stereo/Mono Operation  
RCA  
Input  
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Speaker  
+
L
L
R
+
0
– 180°  
Balanced  
Pass Thru Pass Thru  
EZ Bridged  
Unbalanced  
180°- 0°  
+
2min.  
2min.  
+
+
Speaker  
Terminal  
Speaker  
Terminal  
+
4min.  
RCA inputs are connected to both left and right channels  
Signal Input Switch selected to Unbalanced for RCA input  
Left Phase Switch set to 0°  
Right Phase Switch set to 180° for stereo/mono operation  
All speaker polarity on right channel is inverted to correct for signal phase  
Gain for left and right channels set equally to balance the subwoofer  
Impedance for each channel should be 2minimum  
Impedance for bridged channel should be 4minimum  
XCard is in Full Range position  
Passive crossovers are needed for proper stereo/mono operation  
– 17 –  
 
I
®
®
N
S
RCA  
Input  
T
A
L
L
A
T
I
Bridged Operation  
O
N
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Speaker  
+
L
L
R
+
0
– 180°  
Balanced  
Unbalanced  
Pass Thru Pass Thru  
EZ Bridged  
180°- 0°  
+
Speaker  
Terminal  
Speaker  
Terminal  
+
4min.  
RCA inputs are connected to both left and right channels  
Signal Input Switch selected to Unbalanced for RCA input  
Left Phase Switch set to 0°  
Right Phase Switch set to 180°  
Inverting the right signal will allow the bridged woofer to operate correctly  
Gain for left and right channels set equally to balance the subwoofer  
Impedance for bridged channel should be 4minimum  
XCard is in High-Pass, Low-Pass or Full Range position  
EZ-Bridged Operation  
Mono  
Input  
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Speaker  
+
L
L
R
+
0
– 180°  
Balanced  
Unbalanced  
Pass Thru Pass Thru  
EZ Bridged  
180°- 0°  
+
Speaker  
Terminal  
Speaker  
Terminal  
+
4min.  
RCA input is connected to L (Mono) input  
Signal Input Switch to Unbalanced for RCA input  
Left Phase Switch at 0°  
Right Phase Switch set to E-Z Bridge for the following to occur:  
L (Mono) RCA input to drive both the left and right channels  
Left Gain will control both the left and right channels  
Right Phase will be inverted 180° which will allow the bridged woofer to operate  
correctly  
Impedance for bridged channel should be 4minimum  
XCard is in the High-Pass, Low-Pass or Full Range position  
– 18 –  
 
U
SING THE BALANCED LINE  
I
NPUT  
The Balanced Line Inputs can be utilized with the optional Balanced Line Transmitter. Unlike standard RCA cables that use  
two wires to carry the audio signal and ground, balanced lines use three. In a balanced line, the output signal and its inverted  
replica travel down a pair of wires where the ground connects via the shield. As the amplifier receives the signals, it cancels  
out whatever signals are common to both wires. The use of balanced lines helps in preventing radiated noise pickup in the  
signal cables and has been proven effective in studio installation where long cable runs and magnetic fields make  
maintaining signal integrity difficult.  
Connecting the BLT  
®
®
BALANCED LINE TRANSM ITTER  
+18V  
–18V  
– R. SIG  
+ R. SIG  
L. SIG  
+ L. SIG  
BALANCED LINE  
OUTPUT  
INPUT  
LED  
L
R
SHIELD  
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Speaker  
+
L
L
R
+
0
– 180°  
Balanced  
Unbalanced  
Pass Thru Pass Thru  
EZ Bridged 180°- 0°  
Signal Input Switch to Balanced for Balanced Line Input  
Gain for Left and Right channels set to minimum  
CAUTION!! You must turn the gain controls to minimum when using the Balanced Line Transmitter. If the input gains  
need to be adjusted, this can now be done in the Balanced Line Transmitter.  
– 19 –  
 
a
d
v
a
n
c
e
d
O
p
e
r
Level Setting the BLT  
a
t
i
o
n
R
AUD  
SEL  
CLOCK  
DSPL  
AUTO  
IL  
L
UM  
DISC  
AMFM  
Ch  
P.SCN  
LOUD  
ST LD RDM RPT  
TUNE  
PWR  
VOL  
D.SCN  
SCAN  
2
RPT  
3
RDM  
4
DIM  
5
PAUSE  
6
1
®
1kHz Test Tone @ “0dB”  
10.3  
VAC  
®
®
BALANCED LINE TRANSM ITTER  
L
R
L
+
R
Disconnect Speaker(s) from the amplifier  
CD Software used to set levels is a test tone of 1kHz at 0dBor All Bits High”  
Source Unit set to 3/4 volume (or maximum unclipped output)  
Remove BLT Cover to access test pads and gain pots  
AC Voltmeter set to AC Volts  
AC Voltmeter ” connected to RCA shield of BLT  
AC Voltmeter +” connected to test pad inside the BLT  
Adjust BLT Gain from 3.25 VRMS min. to 10.3 VRMS max per test pad (see chart below)  
Be sure the time index reads greater than 30 seconds on source unit.  
Gain Overlap  
+0dB*  
BLT Output (AC Volts)  
3.25 VRMS  
Performance Characteristics  
Best S/N Ratio, Reduced SPL  
+5dB  
5.8 VRMS  
Good S/N Ratio & SPL  
+10dB  
10.3 VRMS  
Best Compromise between S/N Ratio & SPL  
*Absence of gain overlap will reduce SPL and may not permit amplifier to reach full output power due to various CD  
software.  
– 20 –  
 
ROCKFORD FOSGATE ACCESSORIES  
Balanced Line Transmitter (FG-BLT)  
®
The Balanced Line Transmitter converts unbalanced (RCA) signals from the source unit to balanced signals. The  
BLT improves sound quality in the system by eliminating noises generated by vehicle electrical systems. The BLT  
is available for Rockford Fosgate products that offer a balanced input.  
R
AUD  
SEL  
CLOCK  
DSPL  
AUT  
O
IL  
L
UM  
DISC  
AMFM  
Ch  
P.SCN  
RPT  
3
LOUD  
ST LD RDM RPT  
TUNE  
PWR  
VOL  
D.SCN  
SCAN  
2
RDM  
4
DIM  
5
PAUSE  
6
1
®
®
®
®
BALANCED LINE TRANSM ITTER  
NOISE  
BALANCED LINE  
OUTPUT  
INPUT  
LED  
L
R
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Speaker  
+
L
L
R
+
0
180°  
Balanced  
Unbalanced  
Pass Thru Pass Thru  
EZ Bridged  
180°-  
0°  
ATTENTION: We recommend your Authorized Rockford Fosgate Dealer install your new accessory.  
– 21 –  
 
Energy Storage Capacitors  
®
Energy Storage Capacitors are used to provide extra current needed by amplifiers to reproduce musical transients.  
The capacitors also have the natural ability to filter AC ripple caused by the alternator, reducing the chance of noise  
in the system. The capacitors are available in a variety of values and will maximize both the sound quality and  
performance that Rockford Fosgate amplifiers can deliver.  
LED  
REM  
B+  
GND  
Battery +  
®
®
t
h
e
c
o
n
n
e
c
t
i n  
g
®
1.0  
punch  
1 farad • 20 VDC • 95°C  
Recommended capacitance is 1 farad per 1000 watts  
XCard Crossovers  
®
Additional crossover card frequencies are available for specialized requirements. You can get the following XCards  
from your Authorized Rockford Fosgate Dealer.  
XM50  
XM70  
XM80  
=
=
=
50Hz  
70Hz  
80Hz  
XM200 = 200Hz  
XM275 = 275Hz  
XM400 = 400Hz  
XM4.5k = 4,500Hz  
XM6.5k = 6,500Hz  
XM100 = 100Hz  
XM150 = 150Hz  
XM00  
= Blank card for  
custom crossover  
Crossover Card  
HiPass  
LoPass  
FulRange  
FULL  
ATTENTION: We recommend your Authorized Rockford Fosgate Dealer install your new accessory.  
– 22 –  
 
TROUBLE-  
S
H
O
O
T
I
T
R O U BL E SH O O T I N G  
N
G
Symptom  
Diagnosis  
Remedy  
Amplifier does not turn on.  
(Power LED is off)  
Voltage applied to the REM terminal of the  
amplifier is not between 10.5 and 15.5  
volts or there is no voltage present.  
Check the alternator, battery, fuse, and  
wiring and repair as necessary. If the volt-  
age is above 15.5 volts, have the electrical  
system inspected by an authorized car  
service center.  
Voltage to the B+ terminal of the amplifier  
is not between 10.5 and 15.5 volts or there  
is no voltage present.  
Check the alternator, battery, fuse, and  
wiring and repair as necessary. If the volt-  
age is above 15.5 volts, have the electrical  
system inspected by an authorized car  
service center.  
Amplifier is not properly grounded.  
Check wiring and repair as necessary.  
RCA Input from source unit is not connected  
or not functioning properly.  
Check connections, substitute with known  
working source and cables and repair or  
replace as necessary.  
Amplifier has no sound.  
(Power LED is on)  
When using the BLT, Balanced Line Input  
from BLT is not connected or not function-  
ing properly.  
Check connections, substitute with known  
working BLT and cables and repair or  
replace as necessary.  
Unbalanced/Balanced Line switch is not  
selected for corresponding input.  
Check switch position and correct as neces-  
sary.  
Amplifier is in E-Z Bridge operation but  
incorrect signal input, speaker wiring, and/  
or left channel 180° phase selection is  
chosen.  
Checksignal, speakerwiring, andleftchan-  
nel phase selection installation and correct  
as needed.  
XCards are missing or not placed properly  
in crossover slots.  
CheckXCardpositionsandrepairorreplace  
as necessary.  
Speaker leads are shorted to each other or  
to the chassis of the vehicle.  
Disconnect existing speakers and test with  
known working speakers and wires. If am-  
plifier plays, check and repair wiring and  
installation of speakers as necessary.  
Speakers are defective.  
Disconnect existing speakers and test with  
known working speakers. If amplifier plays,  
check and repair speakers as necessary.  
– 23 –  
 
TROUBLE-  
S
H
O
O
T
I
Symptom  
Diagnosis  
Remedy  
N
G
Speaker Output Low  
or Distorted  
Input gain(s) for amplifier incorrectly set.  
Readjust input gains of amplifier.  
Source unit output too low or source unit  
has no output.  
Check system with known working source  
and repair or replace original source as  
needed.  
Phase selection of amplifier incorrectly se-  
lected or speakers wired out of polarity from  
the left to right channel.  
Check speaker polarity and phase switch  
position and correct as needed.  
XCards are missing or not placed properly  
in crossover slots.  
CheckXCardpositionsandrepairorreplace  
as necessary.  
Low battery voltage or large voltage drops  
to the amplifier under load.  
Check the alternator, battery, fuse or circuit  
breaker and power and ground wiring and  
repair as necessary.  
Voltage spike from output of preceding  
component is entering amplifier through  
input signal.  
Disconnect input signal to amplifier and  
turn amplifier on and off. If noise is elimi-  
nated, connect REM lead of amplifier to  
source unit with a delay turn-on module.  
Amplifier Noise  
(Turn-on Pop)  
Voltage spike from remote turn-on lead is  
entering through REM input terminal.  
Use different 12 volt source for REM lead of  
amplifier (i.e., battery direct). If noise is  
eliminated, use relay to isolate amplifier  
from noise turn-on output.  
RCA Input from source unit is not connected  
or not functioning properly.  
Check connections, substitute with known  
working source and cables and repair or  
replace as necessary.  
No output from Pass-Thru  
output of amplifier.  
When using the BLT, Balanced Line Input  
from BLT is not connected or not function-  
ing properly.  
Check connections, substitute with known  
working BLT and cables and repair or  
replace as necessary.  
Unbalanced/Balanced Line switch is not  
selected for corresponding input.  
Check switch position and correct as neces-  
sary.  
RCA cables or amplifier connected to Pass-  
Thru output is defective.  
Check connections, substitute with known  
working cables or amplifier and repair or  
replace as necessary.  
If noise persists, see your local Authorized Rockford Fosgate Dealer.  
– 24 –  
 
AUTOSOUND 2000's  
QUICK CHECK FOR TROUBLESHOOTING  
CAR AUDIO SYSTEMS  
Preface:  
All audio systems exhibit noise; however, if the level of noise is low enough, and the signal level high enough, noise should not be  
a problem. This means that it is very important that the signal level throughout the system be optimized BEFORE dealing with your  
noise problem. Using a scope (or a small portable amplifier) and Track 99 (1kHz at all high bits) of Rockford Fosgate CD RF-  
CD101 (Autosound 2000's CD #101) or Tracks 24 through 29 of Rockford Fosgate CD RF-CD102 (Autosound 2000's CD #102),  
adjust the system so that when the maximum usable signal level of the deck is fed into the system, all the preamp level components  
clip at the same time. However, we recommend up to as much as a 3:1 voltage overlap with the power amplifiers; i.e. an amplifier  
with a 2 volt minimum sensitivity can be driven by up to 6 volts of signal.  
Noise Overview:  
Car audio electrical accessories are notorious for interfering with car audio systems. The interference commonly arises from three  
areas:  
1) Power line noise (5%), which can be attenuated with in-line noise filters,  
2) Inadequate power supply isolation (45%), which can be cured with transformer signal coupling, additional isolated power  
supplies, or changing out components, or  
3) Inductive interference (45%) – including loop area inductive noise picked up by the signal cables – which can be remedied by  
relocating or rewiring components, rerouting signal cables, or using twisted cable or balanced transmission systems.  
Autosound 2000 1-2-3 Method of Logical Troubleshooting  
I. MUTE THE AMP(S). Insert a muting plug (shorted male RCA connector) into each amplifier channel. Turn up the amp  
sensitivity. Start the car and turn on the headlights, air conditioning, brake lights, etc. Listen for noise in each speaker. Be very  
picky here!  
A. If still noisy, substitute a small test speaker with short leads for the speakers, crossovers, and speaker leads in the car. If still  
noisy, substitute an isolated power supply (120 VAC to 13.8 VDC bench supply or a small motorcycle battery) for the car's  
alternator. If the amplifier is noisy with the test speaker, you have a BAD amp. Send it in. It really doesn't matter if it is quiet  
or noisy while running on the isolated supply because you have a BAD amp. Send it in for repair and if it was quiet on the  
isolated supply, indicate so on the repair tag.  
B. If your muted amp is quiet, you've just joined 99.5% of car audio. Amps are usually very clean and do NOT pick up  
unwanted noise! Continue on to Step II.  
II. DECK TO AMP. Using a new set of signal cables, connect one channel from the output of the deck directly into one channel of  
your clean amp. Run the cables outside the car and as far away as possible from the metal of the car. (For noise purposes,  
consider a 2" thick cushion of electromagnetic energy emanating from every metal surface in the car.)  
A. If still noisy, congratulations, in all probability your equalizer, electronic crossover, DSP, whatchamacallit, are just fine. This  
means that you can't get your deck playing quiet with your amp, right? Go to Step III.  
B. If all is quiet, congratulations, in all probability your deck and amplifier(s) are fine – you obviously have a problem with  
your equalizer, electronic crossover, DSP, etc. Skip on down to “Time for the Processors.”  
– 25 –  
 
III. MOVE THE DECK. If you're at this step, it's time to turn your system into an “amplified deck” by temporarily relocating the deck  
right ON TOP of the clean amplifier. Then using very, very short signal cables, connect the output of the deck into the input of  
the amp and test for noise. Play a zero bit track – silence – and make sure all is completely quiet.  
A. If still noisy, you're in a heap of trouble. We suggest that you try another deck and give us a call so that we can put your  
name into the record books. It's a bad car audio day for you.  
B. If the deck is quiet, then congratulations, you're on your way to a successful installation. It is now time to slowly, methodi-  
cally, reinstall the deck back into its final position. Test for noise each step of the way. If the noise returns, suspect the signal  
cables. Forget shielding because it will have only a very, minimal effect within the audio band. We highly suggest using  
twisted pair cables or a balanced transmission system for cable induced noise.  
Time for Processors:  
By the end of Step III, you should have the deck playing quietly with the amp, with the quiet cables quietly routed. So it's time to add  
the signal processors – one at a time – back into the system. Simply repeat Steps II and III with the equalizer, then the electronic  
crossover, etc. However, before MOVING THE SIGNAL PROCESSORS to the amplifier, we highly suggest that you power the noisy  
process from an isolated power supply rather than the car's +12 volts DC and chassis ground. Make sure to also connect the turn-  
on lead to the isolated power supply. If the processor is now quiet, then it is highly probable that the component has inadequate  
isolation. Solutions include changing components or permanently adding an external isolated power supply (Call Autosound 2000  
at 209-465-3450 for info on isolated power supplies).  
Summation:  
During the design stage of your vehicles, try to avoid using extra batteries and high output alternators. Extra batteries are nothing but  
loads as soon as the engine is started and high output alternators usually make more noise than stock alternators. Also, extra  
batteries installed in the trunk of a car will ALWAYS force extra ripple current to flow over the car.  
Install Stiffening Capacitors® as close to the power supply input of your amplifier as possible. The big caps will feed the switching  
power supplies of your amps and minimize the inductive losses in your power wiring. Plus, they will help your peak system  
response.  
In problem cases, we highly recommend the use of twisted pair cable rather than coaxial cable for RCA leads. This practice will  
greatly minimize cable induced noise – especially in four channel amps!  
Don't forget that your system is only as good as its worst component. Do NOT use components with inadequate power supply  
isolation or you will be asking for problems.  
The best electrical ground on a car is the CHASSIS of the car. Do NOT run ground leads up to the case of the alternator or the negative  
battery post. Keep ALL ground leads as short as possible.  
With properly isolated components, it does NOT matter where the component is grounded. We're sorry to say that with inadequately  
isolated components, it matters! With poorly isolated components, different grounds can cause different noises.  
The deck is the signal reference ground for the entire sound system. The deck usually has THREE connections to the car's chassis:  
The black ground lead, the base of the antenna, and the metal-to-metal bond between the case of the deck and the chassis of the  
car. With three grounds, there is usually NO cause to worry about the ground of a deck.  
Amplifiers are usually designed with adequate power supply isolation. This means that it should not matter where a deck is  
grounded. (Decks are grounded three times and amps float. This is car audio!)  
The more components installed on a signal path, the more chances for noise to enter a system. The more electrical accessories on  
a car, the more noise will be produced by the alternator.  
This information was compiled from more than 20 years of working in car audio. If you would like more information on this topic,  
or any other technical aspects of car audio, please call 800-548-8200 and ask for a subscription to Autosound 2000 Tech Briefs  
— the monthly magazine for the technically inclined.  
– 26 –  
 
D
YN AM I C  
P
O W E R  
M
E ASU R E M E N T S  
About the Dynamic Power Measurements  
The Audio Graph PowerCube is a test instrument used to measure the output of an amplifier in accordance with IHF-202 industry  
standards. The IHF-202 standard is a dynamic power measurement and was developed as a means of measuring power in a  
manner that best represents the Real World operation of an amplifier. Many manufacturers, including Rockford Fosgate, at times  
will measure amplifier power into a fixed resistor (4 ohm, 2 ohm). While this method is useful in some types of evaluation and  
testing, it is not representative of an amplifier that is connected to a speaker and playing music.  
Music  
Music is dynamic; the sound waves are complex and constantly changing. In order to simulate this, the IHF-202 standard calls  
for the input signal to the amplifier to be a 1kHz bursted tone. This signal is input (on for 20 milliseconds) and reduced 20dB  
for 480 milliseconds. The signal is gradually increased in level until the amplifier's output exceeds 1% Total Harmonic Distortion  
(THD). At 1% distortion becomes audible, therefore, any power produced above that level is considered unusable. Many  
manufacturers represent their amplifiers' output power in excess of 10% distortion. They use many names for this measurement,  
such as Total Maximum Power or Maximum Output Power. This is not indicative of the actual usable output power.  
Listening to Loudspeakers - Not Resistors  
A loudspeaker is not a resistor. A resistor's value (resistance measured in ohms) is fixed. A loudspeaker's impedance is dynamic.  
Itisconstantlychanginginvalue, dependentuponthefrequencyoftheinputsignal. Therefore, measuringpowerwiththeamplifier  
loaded into a 4 ohm resistor is not the same as measuring power with the amplifier connected to a 4 ohm speaker. Most people  
do not listen to music through a resistor.  
A 4 ohm speaker may experience a drop in impedance 4-6 times lower than its nominal (printed) impedance. A speaker will also  
create phase shifts in the signal that is passed through it. These phase shifts happen because a speaker is an inductor (voicecoil)  
and a capacitor (compliance of the surround/spider), as well as a resistor (voice coil wire).  
To simulate a speaker the Audio Graph PowerCube measures output power into 20 different loads. It tests at 8 ohms, 4 ohms,  
2 ohms and 1 ohm. Each of these impedances is also tested at –60°, –30°, 0°, +30° and +60° phase angles. These different  
impedances and phase angles represent the shifts in impedance and phase that can occur in a typical loudspeaker.  
Information Cubed  
The data acquired in the testing procedure is then graphed in the form of a 3-dimensional cube, hence the name PowerCube.  
ThePhaseAngleisexpressedonthehorizontalaxis,  
the Output Voltage is presented on the vertical axis  
and the Impedance is displayed on the Z axis.  
Output Power, in watts, is listed on the left hand side  
for each impedance at each phase angle.  
Audio Graph – The PowerCube™  
MODEL BEING  
TESTED  
VOLTAGE FROM  
BATTERY  
x2 = STEREO  
MONO = BRIDGED MONO  
Amplifier: PUNCH 200.2 14.4V x 2  
Serial No:  
Rated Power : 100 W @ 4 Ohms  
What is an Amplifier?  
Owner  
:
ROCKFORD CORPORATION  
An amplifier by definition is a voltage generating  
device, recreating the signal which is input to it  
identically but with increased volume. It will be  
connected to a reactive load (the speaker). The  
impedance of this load and phase of the signal  
passing through the load will vary, dependent upon  
the frequency of the input signal (music).  
8–60° 85  
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
*
–30° 84  
0° 84  
POWER  
IN  
50V  
30V  
30° 84  
60° 86  
WATTS  
{
4–60° 162  
*
–30° 157  
0° 156  
30° 157  
60° 162  
10V  
2–60° 273  
*
–30° 258  
0° 251  
8Ω  
4Ω  
30° 256  
60° 271  
2Ω  
–60° (Cap)  
Therefore, a perfect amplifier will be able to main-  
tain the same output voltage regardless of load  
characteristics and will not alter the signal it is  
reproducing. A perfect amplifier when measured by  
the Audio Graph PowerCube would present data  
that forms a perfect cube. Unfortunately, amplifiers  
0°  
1Ω  
1–60° 390  
*
{
(Ind) +60°  
{
–30° 356  
0° 346  
Impedance  
PHASE ANGLES  
30° 352  
60° 390  
Example of a Punch 200.2 PowerCube  
are not perfect. The laws of physics generally prevent it. A great amplifier is about the best one can hope to attain.  
As you can see by the PowerCube and as you will experience by listening, your Punch amplifier is a GREAT AMPLIFIER!  
– 27 –  
 
500.2 SP EC I FI C AT I O N S  
Dynamic Power Rating (IHF-202 Standard) - Measured at 14.4V  
Per channel into a 4load  
450 Watts  
730 Watts  
1460 Watts*  
Per channel into a 2load  
Bridged into a 4load  
Continuous Power Rating (Competition Standard) - Measured at 13.8 Battery Volts  
RMS continuous power per channel, both channels driven  
into a 4load from 20 to 20,000Hz with less than  
0.05% THD (Total Harmonic Distortion)  
250 Watts  
500 Watts  
RMS continuous power per channel, both channels driven  
into a 2load from 20-20,000Hz, with less than 0.10% THD  
RMS continuous power mono, into 4load  
from 20-20,000Hz, with less than 0.10% THD  
1000 Watts  
Common Mode Rejection Ratio (CMRR):  
Signal-to-Noise Ratio:  
Typically 40dB  
>100dB (A-weighted)  
20Hz-20,000Hz ±0.5dB  
10Hz–250kHz ±3dB  
>200  
Frequency Response:  
Bandwidth:  
Damping Factor @ 4(at output connector):  
Slew Rate:  
50V µs  
IM Distortion (IHF):  
<0.05%  
Input Impedance:  
20k Ohms  
Source Unit Compatibility (+15dB gain overlap):  
Input Sensitivity (+0dB gain overlap):  
Pass-Thru Output:  
34V max.  
Variable from 350mV to 6V  
Unity Gain  
B+ Fuse Size: (External to amplifier)  
Fuse Type:  
100 Amp or two 50 Amp  
(1) ANL / (2) AGU  
12dB or 24dB/octave Butterworth  
80Hz (0.047µf)  
Full Range  
Crossover Slope:  
Factory Crossover Frequency:  
Factory Default Crossover Setting:  
Dimensions: (including end caps)  
9-5/8"W x 18-9/32"L x 2-5/8"H  
(24.4cm) x (46.43cm) x (6.6cm)  
*This is the calculated Dynamic Power Rating. Actual output power exceeded the input capability of the PowerCube.  
Specifications subject to change without notice.  
– 28 –  
 
LIMITED  
W
ARRAN T Y  
I
N FO RM AT I O N  
Rockford Corporation offers a limited warranty on Rockford Fosgate products on the following terms:  
Length of Warranty  
3 years on electronics  
2 years on source units  
90 days on electronic B-stock (receipt required)  
30 days on speaker B-stock (receipt required)  
What is Covered  
This warranty applies only to Rockford Fosgate products sold to consumers by Authorized Rockford Fosgate Dealers in the United  
States of America or its possessions. Product purchased by consumers from an Authorized Rockford Fosgate Dealer in another  
country are covered only by that countrys Distributor and not by Rockford Corporation.  
Who is Covered  
This warranty covers only the original purchaser of Rockford product purchased from an Authorized Rockford Fosgate Dealer in  
the United States. In order to receive service, the purchaser must provide Rockford with a copy of the receipt stating the customer  
name, dealer name, product purchased and date of purchase.  
Products found to be defective during the warranty period will be repaired or replaced (with a product deemed to be equivalent)  
at Rockford's discretion.  
What is Not Covered  
1. Damage caused by accident, abuse, improper operations, water, theft  
2. Any cost or expense related to the removal or reinstallation of product  
3. Service performed by anyone other than Rockford or an Authorized Rockford Fosgate Service Center  
4. Any product which has had the serial number defaced, altered, or removed  
5. Subsequent damage to other components  
6. Any product purchased outside the U.S.  
7. Any product not purchased from an Authorized Rockford Fosgate Dealer  
Limit on Implied Warranties  
Any implied warranties including warranties of fitness for use and merchantability are limited in duration to the period of the express  
warranty set forth above. Some states do not allow limitations on the length of an implied warranty, so this limitation may not  
apply. No person is authorized to assume for Rockford Fosgate any other liability in connection with the sale of the product.  
How to Obtain Service  
Please call 1-800-669-9899 for Rockford Customer Service. You must obtain an RA# (Return Authorization number) to return  
any product to Rockford Fosgate. You are responsible for shipment of product to Rockford.  
Ship to: Speakers  
Ship to: Electronics  
Rockford Corporation  
Warranty Repair Department  
2055 E. 5th Street  
Rockford Acoustic Design  
(Receiving-speakers)  
609 Myrtle N.W.  
Grand Rapids, MI 49504  
RA#:_________________  
Tempe, AZ 85281  
RA#:_________________  
– 29 –  
 
– 30 –  
 
LEA DETENIDAMENTE LAS SIGUIENTES INSTRUCCIONES DE INSTALACIÓN DEL PRODUCTO. EVITARA POSIBLES DAÑOS  
A VD., AL VEHÍCULO O AL PRODUCTO.  
INTRODUCCIÓN  
Los amplificadores de Punch Power representan lo ultimo y mejor que Rockford Fosgate puede ofrecerle. Muchas soluciones  
que nuestros ingenieros han inventado serian consideradas absolutamente desproporcionadas por nuestra competencia.  
NO EN ROCKFORD FOSGATE! Transnova, DIAMOND y TOPAZ diseños exclusivos de Rockford Fosgate, son solo algunas  
de las mas sobresalientes innovaciones que describimos con mas detalle en el capitulo de Caracteristicas Técnicas de Diseño  
en este mismo manual.  
UBICACIÓN DE LOS AMPLIFICADORES  
Maletero  
Monte el amplificador vertical con las altas de refrigeración de arriba a abajo. Es el método correcto para asegurarse la  
máxima disipación de calor.  
Habitáculo  
El amplificador montado en el habitáculo funcionara bien en la medida en que se le proporcione ventilación suficiente para  
refrigerarse. Si piensa en montarlo debajo de un asiento deberá dejar como minimo un espacio de 3cm alrededor del  
refrigerador.  
Instalación  
• Por seguridad desconecte el cable de masa de la bateria antes de empezar la instalación.  
Terminal B+  
El cable de alimentación deberá tener un fusible como máximo a 30cm de la bateria. Prepare los terminales del cable e  
instale el portafusibles en el vano motor (si la bateria estuviera alli ubicada). Recuerde que toda la instalación debe ser  
impermeable.  
Terminal GND (Masa o negativo)  
Prepare untrozo de cable para usarlo como toma de masa. Prepare el chasisrascando toda la pintura y suciedad que pudiera  
haber hasta dejar la chapa viva. Conecte el chasis a masa con un tornillo.  
Terminal REM (Remoto)  
Conecte el terminal REM a un punto de 12V con interruptor. Normalmente se usa la salida Remote o de alimentación de  
antena del Radio Cassette. Si el Radio Cassette no la tuviera o no estuviera disponible se recomienda tomar de la caja de  
fusibles 12V y colocar un interruptor para asi activar el amplificador.  
– 31 –  
 
Operación mono/estéreo  
RCA  
Input  
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Speaker  
+
L
L
R
+
0
– 180°  
Balanced  
Pass Thru Pass Thru  
EZ Bridged  
Unbalanced  
180°- 0°  
+
2min.  
2min.  
+
+
Speaker  
Terminal  
Speaker  
Terminal  
+
4min.  
Los conectores de entrada RCA se conectan a ambos canales derecho e  
izquierdo  
El conmutador de señal de entrada se colocara en Unbalanced para las  
entradas RCA  
El conmutador de fase del canal izquierdo estará en 0 grados  
El conmutador de fase del canal derecho estará en 180 grados cuando se  
requiera operación mono/estéro  
La ganancia de los dos canales derecho e izquierdo deberán ser exactamente  
iguales para balancear correctamente el subgrave  
La impedancia minima para cada canal es de 2 Ω  
La impedancia minima cuando se trabaje en puente será de 4Ω  
Deberá seleccionarse una XCard (tarjeta del divisor de frecuencias) de banda  
completa  
Passive crossovers are needed for proper stereo/mono operation  
– 32 –  
 
ATTENTION: Veuillez lire les instructions suivants pour l'nstallation de ce produit. Ne pas les suivre pourrait causer des  
blessures ou endommager le véhicule.  
INTRODUCTION  
La série d'amplificateurs Punch Power est la vitrine technologique de Rockford Fosgate. Nos ingénieurs utilisent ici des  
technologies considérées hors d'atteinte par d'autres fabricants. Transnova, DIAMOND et TOPAZ, exclusivement conçues  
par Rockford Fosgate, ne sont qu'une partie des technologies spécifiques décrites dans la section “Technical Design Features”  
de ce manuel.  
MONTAGE  
Montage dans le coffre  
Monter l'ampificateur verticalement avec les rainures de haut en bas ce qui lui permet de refroidir plus facilement.  
Montage dans l'habitacle  
Monter l'ampificateur dans l'habitacle ne pose aucun problème, du moment qu'il y ait assez d'air pour le refroidir. Si vous  
montez l'ampli en dessous de siège, prévoyez 3cm d'air autour du radiateur.  
Installation  
Pour votre sécurité, déconnectez la borne négative de la batterie du véhicule avant de commencer l'installation.  
Terminal B+  
Il est impératif qu'il y ait un fusible sur le câble d'alimentation positif le plus près possible de la borne (maximum 30cm).  
Préparez les extrémités du câble et installez le porte fusible sous le capot. Les connexions doivent être étanches.  
Terminal GND  
Préparez une longueur de câble pour la connexion à la masse. Préparez le châssis en grattant la peinture de la surface  
métallique et nettoyez la saleté et l'huile. Attachez le câble au châssis avec une vis.  
Terminal REM  
Connectez le fill REM à une commande 12 volts positive de la source. La commande 12 volts est habituellement prise sur  
la sortie antenne électrique de la source ou la commande accessoire. Si la source ne dispose pas de ces sorties, nous vous  
recommandons d'installer un interrupteur qui fournira un positif 12 volts au REM de l'ampificateur.  
– 33 –  
 
Opération stéréo/mono (Tri-mode)  
RCA  
Input  
L
(Mono)  
R
R
R
L
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Speaker  
+
L
L
R
+
0
– 180°  
Balanced  
Pass Thru Pass Thru  
EZ Bridged  
Unbalanced  
180°- 0°  
+
2min.  
2min.  
+
+
Speaker  
Terminal  
Speaker  
Terminal  
+
4min.  
Les entrées RCA sont connectées aux canaux gauche et droit  
L'interrupteur “Signal Input” doit se trouver dans la position Unbalanced” pour  
utiliser l'entrée RCA  
L'interrupteur “Left Phase” doit se trouver dans la position 0°”  
L'interrupteur “Right Phase” doit se trouver dans la position 180°” pour opera-  
tion en tri-mode  
Les gains des canaux gauche et droit sont réglés de la même manière pour  
équilibrer le subwoofer  
L'impédance de chaque canal devrait être de minimum 2Ω  
L'impédance du canal mono devrait être de minimum 4Ω  
Les XCards sont introduites sur fall range  
Il est conseillé d'utiliser les filtre passifs lorsqu'on fait fonctionner l'amplificateur en  
tri-mode  
NE connecter AUCUN des câbles HP à la masse au risque d'un fonctionnement  
instable.  
Les filtres passifs sont nécessaires pour une utilisation correcte stereo/mono  
– 34 –  
 
Bitte lesen Sie diese Gebrauchsanleitung zuerst sorgfältig durch. Das kann Sie vor dem falschen Einsatz, Ausfallen oder sogar  
Beschädigung des Produktes oder Ihres Fahrzeuges schützen.  
EINLEITUNG  
Die Punch Power Verstärker repräsentiert das Beste, was Rockford Fosgate anzubiete hat! Unsere Ingenieure haben in diesen  
Verstärkern technische Features realisiert, die in der gesamten Auto HiFi-Industrie, einzigartig sind. Transnova, DIABLO und  
TOPAZ exklusive entwickelt von Rockford. Nähere Informationen hierüber und weitere Beschreibungen finden sie in dieser  
Gebrauchsanweisung unter Technical Design Features.  
EINBAUORT  
Im Fahrzeugkofferraum  
Der vertikale Einbau der Endstufen, das bedeutet, dab die Kühlrippen von oben nach unten verlaufen, gibt dem Verstärker  
die beste Kühlung.  
Auf der Beifahrerseite  
Sollte der Verstärker auf der Beifahrerseite montiert werden, so ist es sehr wichtig, für eine ausreichende Kühlung zu sorgen.  
Sollte der Verstärker z.B. unter dem Beifahrersitz montiert werden, sollte dem Kühlkörper mindestens ein Luftspalt von 3cm  
bleiben, um so für eine ausreichende Kühlung zu sorgen.  
Einbau  
Zur Sicherheit klemmen Sie den Negativ-Pol der Batterie während des gesamten Einbaues ab.  
B+ Anschluss  
Die Plus-Leitung mub ca. 40cm nach dem Plus-Pol der Batterie abgesichert sein. Preparieren Sie die Kabellängen und  
montieren Sie den Sicherungshalter im Motorraum. ALLE Verbindungen müssen wasserdicht sein.  
GND Anschluss  
Preparieren Sie Ihr Kabel für die Negativ Leitung (Erdung). Preparieren Sie die Anschlubstelle des Erdungskabels, indem Sie  
das Metall gründlich reinigen und vom Lack befreien. Befestigen Sie nun die Erdung an dieser Stelle mit einer Schraube.  
REM Anschluss  
Verbinden Sie das Ein-und Ausschaltkontroll-Kabel mit Ihrem Radio (12 Volt positiv). Normalerweise verwenden Sie hierfür  
die Ant.-Remote Ihres Radios oder ein eigens dafür vorgesehenes Kabel (Amp-Remote). Sollte Ihr Radio diesen Anschlub  
nicht besitzen, so verwenden Sie ein 12 Volt Spannung, die Sie durch eine Schalter ein - und ausschalten können.  
– 35 –  
 
Stereo/Mono Betrieb  
RCA  
Input  
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Speaker  
+
L
L
R
+
0
– 180°  
Balanced  
Pass Thru Pass Thru  
EZ Bridged  
Unbalanced  
180°- 0°  
+
2min.  
2min.  
+
+
Speaker  
Terminal  
Speaker  
Terminal  
+
4min.  
Chinch Eingänge des rechten und linken Kanales anschlieben  
Signal Eingangsschalter auf unbalanced” für den Betrieb mit Chinch-Kabel stellen  
Linken Phasen Schalter auf 0° stellen  
Rechten Phasen Schalter auf 180° stellen für den Stereo/Mono Betrieb  
Die Lautsprecher-Phase des rechten Kanales umkehren, um eine Phasenkorrektur zu  
erreichen  
Gain Regler des linken Kanales angleichen, um die Lautstärke des Subwoofers  
einzustellen  
Impendanz für jeden Kanal sollte minimum 2 Ohm betragen  
Impendanz im Brückenbetrieb sollte minimum 4 Ohm betragen  
XCard sollte auf Full Range gesteckt werder  
Passive Frequenzweichen werden für korrekte Stereo/Mono Operationen benötigt  
– 36 –  
 
PREGO LEGGERE LE SEGUENTI ISTRUZIONI PER L'INSTALLAZIONE DI QUESTO PRODOTTO, IL NON SEGUIRLE POTREBBE  
RISULTARE SERIAMENTE DANNOSO PER LA PERSONA O PER IL VEICOLO.  
INTRODUZIONE  
La serie Punch Power rappresenta il massimo che Rockford Fosgate ha da offrire! I nostri ingenieri hanno sviluppato delle  
innovazioni tecnologiche che per altri costruttori sono considerate fantascienza, ma non per Rockford Fosgate! Transnova,  
DIAMOND e TOPAZ, esclusivamente progettati da Rockford, sono solo alcune delle innovazioni descritte nella sezione  
specifica del manuale.  
DOVE POSIZIONARLO  
Nel Bagagliaio  
Montando l'amplificatore su una superficie in verticale con le alette direzionate dall'alto verso il basso si garantirá un miglior  
raffreddamento dell'amplificatore.  
Nell'abitacolo  
Montare l'amplificatore nell'abitacolo si avrá un funzionamento regolare se si garantisce un flusso d'aria sufficiente. Per  
l'installazione sotto un sedile, é necessario avere uno spazio di almeno 3 cm attorno a tutto l'amplificatore.  
Installazione  
Per sicurezza, scollegare il polo negativo della batteria dell'auto prima di iniziare l'installazione.  
Terminale B+ (cavo positivo)  
Il cavo positivo deve essere protetto da un fusibile a non piú di 45 cm dalla batteria. Terminare il cavo e installare il fusibile  
nel vano motore. Tutte le connessioni devono essere a prova d'acqua.  
Terminale GND (cavo negativo)  
Decidere la lunghezza del cavo e terminarlo. Preparare la massa grattando la vernice dal telaio dell'auto ed eliminando  
tracce di olio o sporco. Fissare il cavo di massa al telaio con una vite.  
Terminale REM (Consenso di accensione)  
Collegare il cavo REM ad un positivo presente solo ad autoradio accesa (normalmente il cavo pilota dell'antenna elettrica  
o il cavo accessori dell'autoradio). Se la sorgente non dovesse essere equipaggiata con queste uscite, la soluzione  
raccomandabile é di inserire un interruttore su un cavo positivo e connettersi all'amplificatore.  
– 37 –  
 
Stereo/Mono Operation  
RCA  
Input  
L
R
R
R
L
(Mono)  
Speaker  
Balanced  
Input  
Gain  
Gain  
Phase  
Bass  
EQ  
Speaker  
+
L
L
R
+
0
– 180°  
Balanced  
Pass Thru Pass Thru  
EZ Bridged  
Unbalanced  
180°- 0°  
+
2min.  
2min.  
+
+
Speaker  
Terminal  
Speaker  
Terminal  
+
4min.  
RCA inputs non sono collegati ad entrambi, i canli destro e sinistro  
Interruttore di segnale input selezionato per il non bilanciamento per l'input  
RCA  
Fase sinistra dell'interruttore posizionata su 0°.  
Fase destra dell'interruttore posizionata su 180° per l'operazione stereo/mono  
Tutta la polaritá dell'altoparlante del canale destro é invertita per correggere il  
segnale di fase  
Gain per i canali destro e sinistro posizionati ugualmente per bilanciare i  
subwoofer  
Impedenza per ogni canale deve essere minimo 2Ω  
Impedenza per i canali a ponte deve essere minimo 4Ω  
XCard é posizionata per tutto il range  
Crossover passivi sono indispensabili per un corretto funzionamento stereo/  
mono  
– 38 –  
 
MADE IN THE USA  
This product is designed, developed and assembled in the USA by a dedicated group  
of American workers. The majority of the components used in the construction of this  
product are produced by American companies. However, due to the global nature of  
their manufacturing facilities and the loudspeaker parts industry in general, some  
parts may be manufactured in other countries.  
Rockford Fosgate  
Rockford Corporation  
546 South Rockford Drive  
Tempe, Arizona 85281 U.S.A.  
In U.S.A., (602) 967-3565  
In Europe, Fax (49) 8503-9340-14  
In Japan, Fax (81) 559-79-1265  
MAN-1770-A  
9/96  
 

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