Question about Sony XM-2200GTX Car Audio Amplifier
Usually the Left + and the right - is bridged. Here is a link to the specs on your amp:
Posted on Jan 30, 2009
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Sony generally drives their power light from a source that does not rely on the amplifier's switching power supply. This means that it's not a good indicator as to the health of the amplifier.
As long as you have B+ and remote voltage, it will light up. Since you've tested the speaker and the signal source, I think the amplifier is likely defective.
Oct 17, 2007 | Sony XM-2200GTX Car Audio Amplifier
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