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In Reply to: Pre-Amp Kit 2.0. DC in Output, Help posted by J Corner on January 13, 2014 at 17:27:53:
If you have any DC coming out of the RCA positive to ground with your test leads then they would trigger a protective circuit before it does more damage. DC into an amp is a definite NO! NO! That is the what the coupling caps going to the RCA outputs does. It blocks any DC and just lets AC pass. Same as in a power supply. AC goes to ground and dumps the AC ripple which causes hum.
Why it does it to the Rowland and not to the BAT is a good question. It could be the Rowland protective circuit is very sensitive to avoid a real meltdown but the fact that when you take out the preamp and go directly to the CD player with no issue tells you there is something not good with your preamp.
Try another preamp if you have the availability!
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Follow Ups
- RE: Pre-Amp Kit 2.0. DC in Output, Help - xaudiomanx 15:24:22 01/15/14 (1)
- RE: Pre-Amp Kit 2.0. DC in Output, Thank - J Corner 15:45:15 01/17/14 (0)
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