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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: $3k Crap ShootPosted by Paul S on: 4/30/2010
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Max, it sounds like this is not a case of ground (loop) hum, although 3V might well cause problems with HE speakers, depending on how the system grounding is stacked. As a control, try running the APS off its battery while it's loaded (ie, the amp is plugged into the unit, while the unit itself is unplugged). You may have to deal with your amp grounding separately during the course of this experiment. According to reports from other users (available for your perusal, above), unplugging the APS generally stops the buzz, which often seems to be +/- "mechanical", generated by the unit's self-charging system. Others also say that they plan to put their units someplace where they can't hear the self noise, since, although APS agrees that the noise is a problem, yet APS do not actually correct the problems they periodically acknowledge.
Not having $3k to simply piss away these days, I have held off on purchasing one of these, waiting until I get some sense that APS gives a damn and has instituted a meaningful QA/CS program. But the more I hear about it, the more it sounds like a $3k crap shoot.
Best regards,
Paul SRerurn to Romy the Cat's Site