TROUBLESHOOTING

TROUBLE-S H O O T

I N G

Symptom

Diagnosis

Remedy

 

 

 

Amplifier does not

Voltage applied to the REM

Check the alternator, battery, fuse,

turn on

 

terminal of the amplifier is

and wiring and repair as necessary.

(Power LED is off)

not between 10.5 and

If the voltage is above 15.5 volts,

 

 

15.5 volts or there is no

have the electrical system inspected

 

 

voltage present.

by an authorized car service center.

 

 

 

 

 

 

Voltage to the B+ terminal

Check the alternator, battery, fuse,

 

 

of the amplifier is not be-

and wiring and repair as necessary.

 

 

tween 10.5 and 15.5 volts

If the voltage is above 15.5 volts,

 

 

or there is no voltage

have the electrical system inspected

 

 

present.

by an authorized car service center.

 

 

 

 

 

 

Amplifier is not properly

Check wiring and repair as neces-

 

 

grounded.

sary.

 

 

 

 

Amplifier

has no

Speaker leads are shorted

Disconnect existing speakers and

sound

 

 

to each other or to the chas-

test with known working speakers

(Power LED is on)

sis of the vehicle.

and wires. If amplifier 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.

 

 

 

 

Speaker

Output

Input gain signal for amplifier

Readjust input gains of amplifier.

Low or Distorted

is incorrectly set.

 

 

 

 

 

 

 

Source unit output too low or

Check system with known working

 

 

source unit has no output.

source and repair or replace origi-

 

 

 

nal source as needed.

 

 

 

 

 

 

Low battery voltage or large

Check the alternator, battery, fuse,

 

 

voltage drops to the amplifier

and power and ground wiring.

 

 

under load.

Repair as necessary.

 

 

 

Amplifier Noise

Voltage spike from output of

Disconnect input signal to ampli-

(Turn-on Pop)

preceding component is en-

fier and turn amplifier on and off. If

 

 

tering amplifier through in-

noise is eliminated, connect REM

 

 

put signal.

lead of amplifier to source unit with

 

 

 

a delay turn-on module.

 

 

 

 

– 21 –

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Rockford Fosgate 100, 800, 500, 250, 150 manual Troubleshooting, Symptom Diagnosis Remedy
Page 25 Page 27

150, 250, 500, 100, 800 specifications

Rockford Fosgate has long been recognized as a leader in the automotive audio industry, and their amplifier lineup, including models like the 500, 150, 250, 800, and 100, exemplifies the brand's commitment to power and performance. Each model brings unique features, technologies, and characteristics designed to cater to a wide variety of audio enthusiasts.

The Rockford Fosgate 500 amplifier, known for its impressive power output, delivers 500 watts of dynamic sound. One of its standout features is the integrated C.L.E.A.N. technology, which ensures a distortion-free experience by allowing users to set the optimal input levels. This model is ideal for those looking to drive subwoofers without compromising quality.

Another compact yet powerful option is the Rockford Fosgate 150 amplifier. This model is designed for smaller installations but does not skimp on performance. With a peak wattage of 150 watts and a built-in crossover, the 150 is perfect for enhancing speaker systems by providing clear, loud audio without the bulk. The include a low-pass crossover ensures seamless integration with subwoofers.

The Rockford Fosgate 250 takes performance a step further, delivering 250 watts. This model features efficient thermal management with an aluminum heat sink, ensuring durability and reliability even under high usage conditions. The adjustable gain control makes it easy for users to match the amplifier to their specific audio needs.

For those who seek more power, the Rockford Fosgate 800 amplifier offers an impressive 800 watts and is designed for maximum output in both mono and stereo configurations. It features a variable low-pass filter and a bass boost function, allowing users to customize their sound signature to fit individual preferences.

Lastly, the Rockford Fosgate 100 amplifier provides a solid introduction to the brand's high-performance amplifiers, offering 100 watts of power. It is an excellent choice for entry-level users who want to upgrade their sound system without diving into higher-end options. Its rugged design and reliable performance make it a preferred choice among many.

Overall, Rockford Fosgate amplifiers—500, 150, 250, 800, and 100—demonstrate a range of features tailored to meet different audio needs. Whether you are an audiophile or a casual listener, each model incorporates advanced technologies to deliver high-quality sound, making them a staple in the automotive aftermarket audio sphere.
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