JBL GX-A3001 Service Manual

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troubleshootinG
If your amplifier isn’t performing the way you think is should, check to see if the problem is covered in this section before calling your dealer or
contacting JBL customer service.
PROBLEM CAUSES AND SOLUTIONS
Nosound(theamplifier’sPowerLEDisoff) •Checkthattheamplifier’s+12VandGNDconnectionshavebeenproperlymade.
•Checkifthefuseonthe+12Vwirelocatednearthebatteryisblown:Ifso,replaceitwithan
identical fuse.
•Checkallamplifierfuses;ifanyareblown,replacethemwithidenticalfuses.
•Ifyouareusingtheamplifier’sREMconnectionforturn-on,checkthatthewireisproperly
connectedtotheaudiosystem’sremoteturn-onwireortothevehicle’sACCpowerterminal.
Nosound(theamplifier’sPowerLEDisorange) •Checkthatallamplifierinputandspeakerconnectionshavebeenproperlymade.
•Checkthattheamplifier’sLevelcontrolsarenotturnedallthewaydown(counter-clockwise).
•Checkthatthevehicleaudiosystem’ssourceunit’svolumecontrolisnotturnedalltheway
down.
Nosound(theamplifier’sProtectionLEDisred) •Confirmthatthevehicle’selectricalsystemissupplyingbetween9Vand16VDCtothe
amplifier. If the supply voltage is outside of this range, correct the condition before attempting to
use the amplifier.
•Iftheamplifierhasoverheated,waituntilithascooleddownbeforeattemptingtouseitagain.
•Disconnectallspeakersfromtheamplifierandattempttoturnitonagain:
 –Iftheamplifierturnson(thePowerLEDisorange),thereisashortcircuitinoneormoreofthe
speakerwires.Correctallshortcircuitsbeforereconnectingthespeakerstotheamplifier.
 –Iftheamplifierdoesnotturnon(theProtectionLEDisstillredandthePowerLEDisoff),
contact your authorized JBL dealer for assistance.

JBL GX-A3001 Specifications

General

Amplifier class	-
Frequency range	10 - 320 Hz
Audio output channels	1.0 channels
Peak power per channel	415 W
Signal-to-Noise Ratio (SNR)	98 dB
Total Harmonic Distortion (THD)	- %
RMS power output per channel (2 Ohm)	300 W
RMS power output per channel (4 Ohm)	200 W
DC-in jack	Yes
Line inputs (RCA)	2
Speakers connectivity type	RCA
Product color	Black

Weight and Dimensions

Depth	52 mm
Width	206 mm
Height	291 mm