Rockford Fosgate 250.1 manual Symptom, Diagnosis, Remedy, Low or distorted output from, amplifier

Page 46
Low or distorted output from

Symptom

Diagnosis

Remedy

 

 

 

 

 

 

 

H

 

 

 

 

 

TROUBLE-S

 

 

 

 

 

 

 

O

 

 

 

 

 

 

 

O

 

 

 

 

 

 

 

T

Low or distorted output from

Input gain(s) for amplifier incorrectly

Readjust input gains of amplifier.

 

 

 

I

 

 

 

 

 

 

G

 

 

 

 

 

 

 

N

the Pass-Thru output of the

set.

 

 

 

 

 

amplifier.

 

 

 

 

 

 

 

 

Source unit output too low.

Check system with known working

 

 

 

 

 

 

 

source and repair or replace original

 

 

 

 

source as needed.

 

 

 

 

 

 

 

 

 

 

 

 

 

XCards are missing or not placed prop-

Check crossover switches and XCard

 

 

 

erly in crossover slots and/or switches

positions and repair or replace as nec-

 

 

 

are not properly selected.

essary.

 

 

 

 

 

 

 

 

 

 

 

 

 

Low battery voltage or large voltage

Check the alternator, battery, fuse or

 

 

 

drops to the amplifier under load.

circuit breaker and power and ground

 

 

 

 

wiring and repair as necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

RCA cable or amplifier connected to

Check connections, substitute

with

 

 

 

Pass-Thru output is defective.

known working amplifier or cables and

 

 

 

 

repair or replace as needed.

 

 

 

 

 

 

 

 

 

 

 

 

•If noise persists, see your local Authorized Rockford Fosgate Dealer.

– 43 –

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Page 45 Page 47
Contents power powerpower 250.1PRACTICE SAFE SOUND TA B L E O F CO N T E N T S G E T T I N G S T A R T E DINTRODUCTION TO 250 SERIES Punch PowerPunch Power TOPAZ Tracking Operation Pre-AmplifierZone TECHNICAL DESIGN FEATURESDIABLO Dynamically Invariant A-BLinear Operation trans nova circuitryDSM Discrete Surface Mount Technology Stereo Pass-ThruXCard Internal Crossover NOMAD NOn-MultiplyingAdvanced Decision Balanced Line InputsITS Increased Thermal Stability 250.2 DE S I G N FE AT U R E S PLIFIER 250.1 DE S I G N FE AT U R E S 1AMPLIFIER INSTALLATION CONSIDERATIONS Tools NeededPassenger Compartment Mounting BATTERY AND CHARGINGTrunk Mounting Engine Compartment MountingW I R I N G T H E S Y S T E M USING PASSIVE CROSSOVERS 6 dB/Octave Low-Pass TABLE OF CROSSOVER COMPONENT VALUES6 dB/Octave High-Pass FreqHigh-Pass US I N G T H E XCARDCU S T O M I Z I N G T H E XCA R D Low-Pass1% resistors used with 0.047∝ F capacitors XCA R D RESISTOR CHARTButterworth Alignment Q = Butterworth Alignment Q =250.2 Power Connections Option #1 250.2 INSTALLATION250.2 Power Connections Option #2 Left Phase Switch set to Stereo OperationStereo/Mono Operation Right Phase Switch set toLeft Phase Switch set to Bridged OperationEZ-BridgedOperation Right Phase Switch set toPage XCard not required 250.2 uses output from XCard Pass-Thru uses output from XCardPage filterfor Configurea12dBperConfigurea24dBperoctave and“AudiophileBypass”the Pass-ThruUSING THE 250.2 BALANCED LINE INPUTS Connecting the BLTPerformance Characteristics Level Setting the BLT8.0 VAC Disconnect Speakers from the250.1 Power Connections Option #1 250.1 INSTALLATION250.1 Power Connections Option #2 Phase Switch set to Mono Operationminimum AmplifiersPower orFullRangeImpedanceforeachstereochannelshouldbe2Ω minimum Stereo/Mono OperationImpedanceforbridgedchannelshouldbe4Ω minimum Impedanceforbridgedchannelshouldbe4Ω Bridged Mono Operationminimum Pass,-High -LoworPass RangeFullS W I T C H I N G N E T W O R K U S I N G T H E 250.1 SIGNAL“Audiophile Bypass” the LOUD Configure a 12dB per octave filter for theXCard TUNEConfigure a 24dB per octave filter for the 250 Watt System rated @ 4 ohms SY S T E M DI A G R A M STotal Power Delivery RMS 500 Watt System rated @ 4 ohms Total Power Delivery RMSTweeters 750 Watt System rated @ 4 ohmsTotal Power Delivery RMS 450 WattsTweeters 1000 Watt System rated @ 4 ohmsTotal Power Delivery RMS WattsNOISE ROCKFORD FOSGATE ACCESSORIESBalanced Line Transmitter FG-BLT Channel A monitors left channel Punch Status Display FG-PSDPunch Status Display connected to one Channel B monitors right channelXCard Crossovers punchEnergy Storage Capacitors 1.0capDiagnosis SymptomTR O U B L E S H O O T I N G RemedyRemedy SymptomDiagnosis Speaker Output LowRemedy SymptomDiagnosis Low or distorted output fromPreface QUICK CHECK FOR TROUBLESHOOTING CAR AUDIO SYSTEMSAUTOSOUND 2000s Noise OverviewTime for Processors SummationWhat is an Amplifier? DY N A M I C PO W E R ME A S U R E M E N T SAbout the Dynamic Power Measurements Music180Watts 310Watts 620Watts 125Watts 225Watts 250.2 SP E C I F I C AT I O N SSpecifications subject to change without notice 450 Watts420Watts 710Watts 1420 Watts 250Watts 500 Watts 250.1 SP E C I F I C AT I O N SSpecifications subject to change without notice 1000 WattsWhat is Covered LIMITED WA R R A N T Y IN F O R M AT I O NLength of Warranty What is Not CoveredN F O R M A T I O N Maletero INTRODUCCIÓNUBICACIÓN DE LOS AMPLIFICADORES HabitáculoOperación mono/estéreo MONTAGE InstallationINTRODUCTION Montage dans le coffrePage DEUTSCH EINLEITUNGEINBAUORT Im FahrzeugkofferraumLinken Phasen Schalter auf 0 stellen Stereo/Mono BetriebDOVE POSIZIONARLO InstallazioneINTRODUZIONE ITALIANOStereo/Mono Operation Fase sinistra dellinterruttore posizionata suMADE IN THE USA
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