Audio Banter - View Single Post - 10 metres audio cable going into PC = too long?

**Don Pearce**

On Sun, 23 Apr 2006 03:13:33 -0800, (Floyd L.
Davidson) wrote:

(Don Pearce) wrote:
Just as your supposed "diagram" didn't show what a ground loop is,
your "evidence" isn't evidence.

Your posting was essentially an assertion that if you connect up a
microphone wrongly, it doesn't work properly. Now maybe you don't
understand why you shouldn't connect a microphone the way you suggest,
but it is a fact.

My web site evidence showed - and yes it did show - that when you know
what you are doing and connect everything up properly, there is no hum
when you touch a microphone body.

You haven't shown anything.

And I notice that, even though this URL has been posted twice before,
you don't have a word to say about it.

64.70.157.146/pdf/Bondingcableshields.pdf

*That* is evidence. And it clearly debunks virtually everthing you've
had to say in this thread.

You clearly wouldn't know evidence if it bit you on the backside if
you believe a pdf carries more weight than an actual sample.

And of course the stuff in the pdf has no bearing on the actual issue,
which is that a ground loop necessitates a loop in the ground. One
would have thought that even a limited skill in reading would have
made that clear.

And you still haven't explained why you think it is a good idea to
connect the screen to one side of the capsule in a microphone - you
certainly didn't think it was a stupid thing to do when you posted it
- just bitched about the "fact" (sic) that a microphone hums when you
grab hold of it.

All through this thread you have revealed that you don't understand
what is going on, you post diagrams that contradict your position, you
believe a single connection constitutes a loop, you think that hum is
signal, you introduce common mode DC - and I still haven't fathomed
what that had to do with anything.

Now please, go away and reflect on all of these things, forget the
"theory" you have learned and find out how the real world actually
works.

OK?

d

--
Pearce Consulting
http://www.pearce.uk.com