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videoracer · 8th January 2009

>> Up until today my pre´s have yet to make any noise, they are very quiet.
You could be picking up some interference, sounds like a ground loop problem, try notching out with a filter plugin around 50/60 hz and see if it goes away, if so you have some kind of ground loop induced noise in your system.<<

I wasn't implying that the pre's are making the noise. The Behringer is suspect, but I don't have access to another A/D at this time,especially a high quality one, to run further tests.

The hum is strictly in the Fathead, none of the other mics have it. Again, it's not a detrimental level, but I can hear it. Fortunately noise reduction takes care of all the noise levels effectively, but the less of that I need to apply the less of the actual signal's spectral content gets dug into.

8th January 2009	#100
videoracer Gear addict Joined: Apr 2008 Posts: 326	>> Up until today my pre´s have yet to make any noise, they are very quiet. You could be picking up some interference, sounds like a ground loop problem, try notching out with a filter plugin around 50/60 hz and see if it goes away, if so you have some kind of ground loop induced noise in your system.<< I wasn't implying that the pre's are making the noise. The Behringer is suspect, but I don't have access to another A/D at this time,especially a high quality one, to run further tests. The hum is strictly in the Fathead, none of the other mics have it. Again, it's not a detrimental level, but I can hear it. Fortunately noise reduction takes care of all the noise levels effectively, but the less of that I need to apply the less of the actual signal's spectral content gets dug into.