Question about JBL GTO 301.1 Car Audio Amplifier
I have checked all fuses and they all seem good.
You need to confirm that you have B+ and remote voltage at the amplifier.
With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.
Posted on Dec 23, 2007
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