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Posted: Thu Nov 18, 2010 1:53 pm
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tfunk182 wrote:
Unplugged the amp flipped the cord over plugged back in problem solved, thanks to a local amp tech. Never would have thought of that in a million years.
:D


Leave explicit instructions on where you'd like the urn sent and be sure to update your will.

Bon voyage!

Arjay

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Posted: Thu Nov 18, 2010 2:42 pm
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+1 Seriously :?

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Posted: Fri Nov 19, 2010 10:18 pm
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The idea of "flipping" the cord around is unfortunately advocated by many hi-fi amp techs and even hi-end stereo manufacturers. Some will tell an owner to buy a "cheater plug" to defeat the three-prong ground plug, so that they can flip the plug. Most of the time hum in their systems is due to the sheer number of units plugged into outlets (DVD, CD, Record players, pre-amps, EQ, amps, subwoofers, etc). These units are all tied to each other by less than ideal RCA-type interconnects (which tie the grounds together by the shielded porton of the wire).

Needless to say, ground-loop potential galore... with this setup.

Anyhow, these hi-fi techs will do guitar amps from time-to-time. Not understanding the enviroment which many guitar amps see. Outdoors, beer, several amps plugged into different outlets, the ability of a patch cord to easily carry several amps of DC current, whatever. So they don't understand the absolute need for safety.

Most serious hum can be traced down to internal wiring. Or patch cord/ guitar pickup issues. It takes time, but a much safer and long lasting approach. And the tiny hum left is well worth preserving your cardiac well-being.

To re-iterate what all have sed, DO NOT defeat a three-prong cord. And ALWAYS upgrade an old two-prong to a patent three-prong one.


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Posted: Sat Nov 20, 2010 3:03 am
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+1 BMW2002Ti


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Posted: Sat Nov 20, 2010 6:55 am
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Excellent post BMW.
I think the OP may have thought his problem is solved but if one person reads the info here and breathes longer,and makes music safer..then all is not lost.


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Posted: Sat Nov 20, 2010 7:26 am
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Rebelsoul wrote:
Excellent post BMW.
I think the OP may have thought his problem is solved but if one person reads the info here and breathes longer,and makes music safer..then all is not lost.


It's incumbent upon every guitarist who plays an electric to understand at least some of the physics and science involved in safely coaxing audio from their equipment without ending up in a hospital ER (or worse). The unwary ignore this at their own peril.

Arjay

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