Rockford Fosgate 250.2 Speaker Output Low, Or Distorted, Amplifier Noise, Output of amplifier

Page 44

Symptom

Diagnosis

Remedy

 

 

 

 

O

 

 

 

 

 

 

TROUBLE-S

 

 

 

 

 

 

 

 

 

H

 

 

 

 

 

 

 

 

 

O

 

 

 

 

 

 

 

 

 

T

Speaker Output Low

Input gain(s) for amplifier incorrectly set.

Readjust input gains of amplifier.

 

 

 

 

I

 

 

 

 

 

 

 

 

N

 

 

 

 

G

or Distorted

 

 

 

 

 

 

 

 

 

Source unit output too low or source unit

Check system with known working source

 

 

 

 

 

 

 

 

 

 

has no output.

and repair or replace original source as

 

 

 

 

 

 

needed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Phase selection of amplifier incorrectly se-

Check speaker polarity and phase switch

 

 

 

 

 

lected or speakers wired out of polarity from

position and correct as needed.

 

 

 

 

 

 

 

the left to right channel.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XCards are missing or not placed properly

Check crossover switches and XCard posi-

 

 

 

 

 

in crossover slots and/or switches are not

tions and repair or replace as necessary.

 

 

 

 

 

 

 

properly selected.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low battery voltage or large voltage drops

Check the alternator, battery, fuse or circuit

 

 

 

 

 

to the amplifier under load.

breaker and power and ground wiring and

 

 

 

 

 

 

repair as necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

Amplifier Noise

Voltage spike from output of preceding

Disconnect input signal to amplifier and

 

 

(Turn-on Pop)

component is entering amplifier through

turn amplifier on and off. If noise is elimi-

 

 

 

 

 

input signal.

nated, connect REM lead of amplifier to

 

 

 

 

 

 

source unit with a delay turn-on module.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Voltage spike from remote turn-on lead is

Use different 12 volt source for REM lead of

 

 

 

 

 

entering through REM input terminal.

amplifier (i.e., battery direct). If noise is

 

 

 

 

 

 

eliminated, use relay to isolate amplifier

 

 

 

 

 

 

from noise turn-on output.

 

 

 

 

 

 

 

 

 

 

 

No output from Pass-Thru

RCA Input from source unit is not connected

Check connections, substitute with known

 

 

output of amplifier.

or not functioning properly.

working source and cables and repair or

 

 

 

 

 

 

replace as necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When using the BLT, Balanced Line Input

Check connections, substitute with known

 

 

 

 

 

from BLT is not connected or not function-

working BLT and cables and repair or

 

 

 

 

 

ing properly.

replace as necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Unbalanced/Balanced Line switch is not

Check switch position and correct as neces-

 

 

 

 

 

selected for corresponding input.

sary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XCards are missing or not placed properly

Check crossover switches and XCard posi-

 

 

 

 

 

in crossover slots.

tions and repair or replace as necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

– 41 –

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Page 43 Page 45
Contents Punch Practice Safe Sound Serial Number Model NumberTable of Contents T T I N G S TA R T E DPunch Amplifier Accessory Pack Introduction to 250 SeriesTechnical Design Features Transnova TRANSconductance NOdal Voltage AmplifierStereo Pass-Thru Balanced Line Inputs Result Quiet transmission of audio from source to amplifierDesign Features 250 Mono 1AMPLIFIER Installation Considerations Tools NeededBattery and Charging Mounting Location SWiring the System Using Passive Crossovers Table of Crossover Component Values 6dB/Octave High-Pass and Low-Pass FiltersUsing the Xcard Customizing the Xcard3386 7234Xcard Resistor Chart Power Connections Option #2 InstallationPower Connections Option #1 Stereo Operation Stereo/Mono OperationBridged Operation EZ-Bridged OperationUsing the 250.2 Signal Switching Network AmplifierXCard not required Uses output from XCard Pass-Thruuses output from XCard Pass Thru XCard Audiophile Bypass the Pass-Thru Using the 250.2 Balanced Line Inputs Connecting the BLTDisconnect Speakers from AC Voltmeter set to AC VoltsKeep ground connections as close to each other as possible Mono Operation Stereo Operation using two Punch 250.1 Power Amplifiers 250 #1 250 #2XCard 250.1 #1/#2 set to Full Range Bridged Mono Operation US I N G T H E 250.1 Signal SW I T C H I N G NE T W O R K Audiophile BypassConfigure a 12dB per octave filter for Xover is set to 12dB Pass-Thruhas Full Range output onlyConfigure a 24dB per octave filter for the 250 Watt System rated @ 4 ohms System DiagramsTotal Power Delivery RMS 12dB/octave BP Woofers12dB/octave HP Total Power Delivery RMS Tweeters 450 Rockford Fosgate Accessories Balanced Line Transmitter FG-BLTRecommended capacitance is 1 farad per 1000 watts Energy Storage CapacitorsXCard Crossovers Troubleshooting Symptom Diagnosis RemedyAmplifier does not turn on Amplifier has no soundSpeaker Output Low Or DistortedAmplifier Noise No output from Pass-ThruSource unit output too low Repair or replace original source as NeededQuick Check for Troubleshooting CAR Audio Systems Autosound 2000sTime for Processors Monthly magazine for the technically inclinedDynamic Power Measurements Specifications Watts420 Watts 710 Watts1420 500 WattsLimited Warranty Information R M a T I O N Introducción Ubicación DE LOS AmplificadoresEspañol Operación mono/estéreoIntroduction MontageOpération stéréo/mono Tri- mode Einleitung EinbauortLinken Phasen Schalter auf 0 stellen Stereo/Mono BetriebIntroduzione Dove PosizionarloTerminale B+ cavo positivo Terminale GND cavo negativoStereo/Mono Operation Fase sinistra dellinterruttore posizionata suMade in the USA

250.2 specifications

The Rockford Fosgate 250.2 is a powerful and versatile car amplifier known for its performance and reliability. As part of Rockford Fosgate’s renowned line of audio equipment, the 250.2 is engineered to enhance the listening experience in vehicles, providing a fantastic balance of power, clarity, and durability.

This amplifier delivers an impressive 250 watts of power, making it suitable for both beginner audiophiles and seasoned enthusiasts who seek to elevate their car audio system. The 250.2 is a two-channel amplifier, which means it can power two speakers or one subwoofer. Utilizing a class A/B topology, it ensures high efficiency while minimizing distortion, resulting in clean and powerful audio output.

One of the standout features of the Rockford Fosgate 250.2 is its Signal Sense turn-on technology. This feature allows the amplifier to automatically turn on when it detects a signal from the head unit, eliminating the need for a manual switch. Additionally, the built-in remote gain control allows users to adjust the amplifier’s output level easily, providing a customizable audio experience tailored to their preferences.

The 250.2 is equipped with an adjustable crossover that can be set to high-pass, low-pass, or full-range modes. This flexibility permits users to fine-tune the frequencies sent to their speakers, optimizing sound quality and performance. Further enhancing its capabilities, the amplifier also includes built-in variable bass boost that allows users to amplify low frequencies for a more impactful bass response.

Constructed with a durable aluminum heatsink, the Rockford Fosgate 250.2 maintains optimal temperature during operation, ensuring long-lasting performance and minimizing thermal issues. The amplifier also features RCA inputs, making it compatible with a wide range of audio sources, enhancing its versatility for various setups.

In summary, the Rockford Fosgate 250.2 is a reliable and robust car amplifier that combines high power output with advanced technologies and user-friendly features. Its efficient design, customizable settings, and quality construction make it an excellent choice for anyone looking to improve their vehicle's sound system. Whether for day-to-day driving or road trips, the Rockford Fosgate 250.2 provides an audio experience that is both powerful and enjoyable, reinforcing Rockford Fosgate's reputation as a leader in the car audio industry.
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