Re: [LAU] Terrible mic ground noise

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To: <jonetsu@...>
Cc: <linux-audio-user@...>
Date: Monday, April 1, 2013 - 4:59 am

On Sun, March 31, 2013 9:25 am, jonetsu@teksavvy.com wrote:

>> From what you have said above and from looking up the HW you are

Is this the way the whole house is wired? (or garage or whatever) This may
very well be some of your problem. It would seem that your whole setup is
floating. I would feel comfortable fixing the wiring to make sure I had
proper grounding even if it just meant running one wire for that purpose.
If there are any grounded outlets in the building (washing machine for
example), I would run an extension cord from there. I have not had hum
like that from a mic. If you have no grounded outlets at all in your
house... In North America that would be over 50 years old... then running
a good thick wire (14 gauge would be good) to the chassis of your computer
from the cold water pipe if you are on city water and it is metal all the
way out of the house... or a 6 foot piece of re-bar pounded into the
ground would work too. If you are on well water the whole water system may
be above ground or plastic. Also check the main power panel as the power
company may have that grounded regardless of the rest of the house. A
friend who is an electrician would be a great asset at this time :) They
could probably figure things out in less time than it took you to read
this.

You are getting sound from your mic... therefore it must be a dynamic mic.
It is quite possible that whatever I looked up on m-audio's website is not
what you have. So it is not worth worrying about getting phantom power to
it if it is working without it.

> Obviously I know nothing about those phantom power units. Which one

That would be the way, but if you are getting sound at all, your mic
either has power already or doesn't need it. If it was indeed a phantom
powered mic you would get no audio from it at all, so I think you have a
dynamic mic of sorts.

> Also, now the passive DI box can be put to some other use. Would it

:) I suspect you will not hear much if any difference. The transformer in
the DI may pull some of the high end sharpness if you run the amp into
distortion all the time. Not knowing if the VOX you have is tube or
transistor, where you are getting the output from, etc. I really don't
know. The value of a DI is in long cable runs often found in a live
situation or in the case you only have balanced inputs. If your amp has a
direct out, it should work fine into one of your line ins. If it is a
speaker out, the DI may do a better job of matching things. In any case
your ears are the best judge of this.

--
Len Ovens
www.OvenWerks.net

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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)