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Loop Isolators
David Nebenzahl wrote: GregS spake thus: In article , David Nebenzahl wrote: Pooh Bear spake thus: David Nebenzahl wrote: Palinurus spake thus: ... In my case, it seems to be the only practical way to break a hum loop from an external USB sound card into the stereo. How about running a ground wire between the PC and stereo? Reversing the power plug on the receiver? What would these acheive ? The same thing as a chassis ground wire on a turntable (remember those?)--hum elimination. The computer has signal grounds referenced to "ac ground". A turntable's output is not referenced to ground, except for some capacitance. When you ground the turntable, you are making a shield for the signal. By adding another ground between PC and stereo, you are just reducing the resistance, reducing noise, but not elimnating it. In any case, it would do no harm, and it might do some good, so why not? It's just the wrong 'solution' I'm afraid. Graham |
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