Rockford Fosgate 250.1 manual Tr O U B L E S H O O T I N G, Symptom, Diagnosis, Remedy

Page 44
TR O U B L E S H O O T I N G

TR O U B L E S H O O T I N G

TROUBLE-S H O O T

I N G

Symptom

Diagnosis

Remedy

Amplifier does not turn on.

Voltage applied to the REM terminal of

Check the alternator, battery, fuse, and

(Power LED is off)

the amplifier is not between 10.5 and

wiring and repair as necessary. If the

 

 

15.5 volts or there is no voltage present.

voltage is above 15.5 volts, have the

 

 

 

electrical system inspected by an au-

 

 

 

thorized car service center.

 

 

 

 

 

 

 

Voltage to the B+ terminal of the ampli-

Check the alternator, battery, fuse, and

 

 

fier is not between 10.5 and 15.5 volts

wiring and repair as necessary. If the

 

 

or there is no voltage present.

voltage is above 15.5 volts, have the

 

 

 

electrical system inspected by an au-

 

 

 

thorized car service center.

 

 

 

 

 

 

 

Amplifier is not properly grounded.

Check wiring and repair as necessary.

 

 

 

 

 

Amplifier has no sound.

RCA Input from source unit is not con-

Check connections, substitute with

(Power LED is on)

nected or not functioning properly.

known working source and cables and

 

 

 

repair or replace as necessary.

 

 

 

 

 

 

 

When using the BLT, Balanced Line

Check connections, substitute with

 

 

Input from BLT is not connected or not

known working BLT and cables and

 

 

functioning properly.

repair or replace as necessary.

 

 

 

 

 

 

 

Unbalanced/Balanced Line switch is

Check switch position and correct as

 

 

not selected for corresponding input.

necessary.

 

 

 

 

 

 

 

Amplifier is in E-Z Bridge operation but

Check signal, speaker wiring, and left

 

 

incorrect signal input, speaker wiring,

channel phase selection installation and

 

 

and/or left channel 180° phase selec-

correct as needed.

 

 

tion is chosen.

 

 

 

 

 

 

 

 

 

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.

 

 

 

 

 

 

 

Speaker leads are shorted to each other

Disconnect existing speakers and test

 

 

or to the chassis of the vehicle.

with known working speakers and wires.

 

 

 

If amplifier plays, check and repair wir-

 

 

 

ing and installation of speakers as nec-

 

 

 

essary.

 

 

 

 

 

 

 

Speakers are defective.

Disconnect existing speakers and test

 

 

 

with known working speakers. If ampli-

 

 

 

fier plays, check and repair speakers as

 

 

 

necessary.

 

 

 

 

 

– 41 –

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Page 43 Page 45
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 DPunch Power Punch PowerINTRODUCTION TO 250 SERIES TECHNICAL DESIGN FEATURES DIABLO Dynamically Invariant A-BLinear OperationTOPAZ Tracking Operation Pre-AmplifierZone trans nova circuitryXCard Internal Crossover Stereo Pass-ThruDSM Discrete Surface Mount Technology ITS Increased Thermal Stability Balanced Line InputsNOMAD NOn-MultiplyingAdvanced Decision 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 NeededBATTERY AND CHARGING Trunk MountingPassenger Compartment Mounting Engine Compartment MountingW I R I N G T H E S Y S T E M USING PASSIVE CROSSOVERS TABLE OF CROSSOVER COMPONENT VALUES 6 dB/Octave High-Pass6 dB/Octave Low-Pass FreqUS I N G T H E XCARD CU S T O M I Z I N G T H E XCA R DHigh-Pass Low-PassXCA R D RESISTOR CHART Butterworth Alignment Q =1% resistors used with 0.047∝ F capacitors Butterworth Alignment Q =250.2 Power Connections Option #2 250.2 INSTALLATION250.2 Power Connections Option #1 Stereo Operation Stereo/Mono OperationLeft Phase Switch set to Right Phase Switch set toBridged Operation EZ-BridgedOperationLeft Phase Switch set to Right Phase Switch set toPage XCard not required 250.2 uses output from XCard Pass-Thru uses output from XCardPage Configurea12dBper Configurea24dBperoctave and“AudiophileBypass”thefilterfor Pass-ThruUSING THE 250.2 BALANCED LINE INPUTS Connecting the BLTLevel Setting the BLT 8.0 VACPerformance Characteristics Disconnect Speakers from the250.1 Power Connections Option #2 250.1 INSTALLATION250.1 Power Connections Option #1 minimum Mono OperationPhase Switch set to AmplifiersPower orFullRangeImpedanceforbridgedchannelshouldbe4Ω minimum Stereo/Mono OperationImpedanceforeachstereochannelshouldbe2Ω minimum Bridged Mono Operation minimumImpedanceforbridgedchannelshouldbe4Ω Pass,-High -LoworPass RangeFull“Audiophile Bypass” the U S I N G T H E 250.1 SIGNALS W I T C H I N G N E T W O R K Configure a 12dB per octave filter for the XCardLOUD TUNEConfigure a 24dB per octave filter for the Total Power Delivery RMS SY S T E M DI A G R A M S250 Watt System rated @ 4 ohms 500 Watt System rated @ 4 ohms Total Power Delivery RMS750 Watt System rated @ 4 ohms Total Power Delivery RMSTweeters 450 Watts1000 Watt System rated @ 4 ohms Total Power Delivery RMSTweeters WattsBalanced Line Transmitter FG-BLT ROCKFORD FOSGATE ACCESSORIESNOISE Punch Status Display FG-PSD Punch Status Display connected to oneChannel A monitors left channel Channel B monitors right channelpunch Energy Storage CapacitorsXCard Crossovers 1.0capSymptom TR O U B L E S H O O T I N GDiagnosis RemedySymptom DiagnosisRemedy Speaker Output LowSymptom DiagnosisRemedy Low or distorted output fromQUICK CHECK FOR TROUBLESHOOTING CAR AUDIO SYSTEMS AUTOSOUND 2000sPreface Noise OverviewTime for Processors SummationDY N A M I C PO W E R ME A S U R E M E N T S About the Dynamic Power MeasurementsWhat is an Amplifier? Music250.2 SP E C I F I C AT I O N S Specifications subject to change without notice180Watts 310Watts 620Watts 125Watts 225Watts 450 Watts250.1 SP E C I F I C AT I O N S Specifications subject to change without notice420Watts 710Watts 1420 Watts 250Watts 500 Watts 1000 WattsLIMITED WA R R A N T Y IN F O R M AT I O N Length of WarrantyWhat is Covered What is Not CoveredN F O R M A T I O N INTRODUCCIÓN UBICACIÓN DE LOS AMPLIFICADORESMaletero HabitáculoOperación mono/estéreo Installation INTRODUCTIONMONTAGE Montage dans le coffrePage EINLEITUNG EINBAUORTDEUTSCH Im FahrzeugkofferraumLinken Phasen Schalter auf 0 stellen Stereo/Mono BetriebInstallazione INTRODUZIONEDOVE POSIZIONARLO ITALIANOStereo/Mono Operation Fase sinistra dellinterruttore posizionata suMADE IN THE USA
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