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Author Topic: Pre-painted EMT conduit  (Read 14550 times)

John Roberts {JR}

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Re: Pre-painted EMT conduit
« Reply #20 on: February 25, 2005, 10:06:20 AM »

It is pretty likely that the pipe may be effectively grounded... but so what? The capacitance should be small wrt source impedance even for a constant voltage system.

Without disputing that, what did the poster hear? A roll-off up where only bats can hear? Perhaps a flaky amplifier oscillating and creating artifacts audible to us mere humans.

It's rarely productive to argue that someone else didn't hear anything, we may learn that they heard something other that what they assume they were hearing. I am interested to learn more about this particular situation. The laws of physics are pretty strict but not always obvious.

JR

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Hal Bissinger/COMSYSTEC

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Re: Pre-painted EMT conduit
« Reply #21 on: February 25, 2005, 03:19:22 PM »

I am not aware of any sound problems from running speaker wire in "pipe". Please describe precisely what you heard that you attribute to the "pipe"?

Maybe it sounded hollow. Laughing

-Hal
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