Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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Agree...

Posted by jea48 (A) on July 6, 2007 at 06:05:22

In Reply to: We also know that Steve's setup with two AC circuits does not hum. posted by Al Sekela on July 5, 2007 at 15:59:03:

Therefore the use of the second hot wire for one monoblock is the proximate cause of the hum. Whether it is because of the small residual current in the neutral wire, or mismatched power transformer parasitic capacitances, would have to be determined by some simple experiments and measurements.

>>>>>>>>>>>>>

How about this for a test, have Steve plug one of the power amps into the dedicated circuit with the preamp. Leave the other amp plugged into the separate circuit outlet that is on the same Line, leg, as the preamp recept.

We would have all the audio equipment being fed from the same Line, leg, of the electrical panel. Will there be a hum?
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I wonder how many guys out there think they had two dedicated circuits installed by an electrician for the audio equipment, and instead have two separate circuits.......

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