Re: Shielding, on further investigation

[Art Simon <simart@gmail.com>]

I had a 9 volt portable guitar amp that would start picking up interference and humming like a (. . . fill in your favorite Frank Zappa quote. . .) when it ran low, so that seems pretty reasonable to me.

On Sun, Mar 14, 2010 at 9:24 PM, William Walker <billwalker@baymoon.com> wrote:

Now my head really hurts, I tried some more tests to recreate the weird hum i was experiencing and realized the two instruments that were susceptible where the two with duncan mag mic active pickups in them, which also brings up the possibility that an aging 9 volt battery might be also culprit.  Put if that were the case I'd probably here the high pitched whine regardless of whether I was looping or not. The difficulty is that it might be a number of things happening to cause the problem. One thing I did try the last time this happened was to put a buffer amp in the signal path which also cured the issue. Puzzling .. weird, ghosts in the machine........ And then again its probably just the ancient overworked electrical system in our house................
Bill

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Art Simon
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