[LAU] Terrible mic ground noise

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From: <jonetsu@...>
To: <linux-audio-user@...>
Date: Sunday, March 31, 2013 - 2:06 pm

Hello,

There is a very bad ground noise when I connect the M-Audio pulsar
mic into a mic input of the 1010LT. As soon as I touch the mic, the
ground noise disappears. Complete silence. But then, try to play bass
like that. The mic goes through a Radial JDI passive direct box. It
has the 15dB pad on because it makes a bit less ground noise. I tried
various settings on the DI box, bit none gets rid of the noise.

The electric plug has only two prongs. I though of getting some
copper wire and somehow run a length of wire from the electric plug
receptacle to a nearby set of copper water pipes. That shoudl get the
rig grounded, would it ?

Before getting into that or anything else, is that ground noise a
factor of a cheap microphone ? Or is it the quality of the 1010LT input
that uses not-so-good decoupling capacitors (or some such) ? Is it
possible to have silence without getting pro hardware ?

Thanks for suggestions/ideas/hints !

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Messages in current thread:
[LAU] Terrible mic ground noise, , (Sun Mar 31, 2:06 pm)
Re: [LAU] Terrible mic ground noise, Len Ovens, (Sun Mar 31, 3:02 pm)
Re: [LAU] Terrible mic ground noise, , (Sun Mar 31, 4:25 pm)
Re: [LAU] Terrible mic ground noise, Len Ovens, (Mon Apr 1, 4:59 am)
Re: [LAU] Terrible mic ground noise, , (Mon Apr 1, 8:14 pm)
Re: [LAU] Terrible mic ground noise, Fons Adriaensen, (Mon Apr 1, 11:06 pm)
Re: [LAU] Terrible mic ground noise, Ralf Mardorf, (Tue Apr 2, 8:44 am)
Re: [LAU] Terrible mic ground noise, Fons Adriaensen, (Tue Apr 2, 10:45 am)
Re: [LAU] Terrible mic ground noise, Ralf Mardorf, (Tue Apr 2, 11:34 am)
Re: [LAU] Terrible mic ground noise, Gene Heskett, (Mon Apr 1, 1:58 pm)
Re: [LAU] Terrible mic ground noise, , (Mon Apr 1, 9:29 pm)
Re: [LAU] Terrible mic ground noise, Gene Heskett, (Tue Apr 2, 12:32 am)
Re: [LAU] Terrible mic ground noise, Ralf Mardorf, (Tue Apr 2, 9:23 am)
Re: [LAU] Terrible mic ground noise, Chris Bannister, (Tue Apr 2, 3:38 pm)
Re: [LAU] Terrible mic ground noise, Len Ovens, (Mon Apr 1, 3:44 pm)
Re: [LAU] Terrible mic ground noise, Fons Adriaensen, (Mon Apr 1, 9:51 am)
Re: [LAU] Terrible mic ground noise, , (Mon Apr 1, 9:14 pm)
Re: [LAU] Terrible mic ground noise, Fons Adriaensen, (Sun Mar 31, 8:25 pm)
Re: [LAU] Terrible mic ground noise, , (Sun Mar 31, 10:05 pm)