Question about Music
The symptoms are common to a capacitively coupled signal which is often a bad switch on an insert jack that is bent so as to not contact the signal to pass it to the power amp.
The jacks on MANY of these amps are plain JUNK. If a cable is yanked a bit it can bend the spring contact. When the conttact is very close, but not touching, the capacitance will pass the high frequencies but not the low and ALL frequencies will be very attenuated.
Posted on Oct 10, 2009
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