• Registered: 2014-10-20
  • Posts: 5

Topic: Quadmic issue: decrease in S/N to 61dB on chanell 4

Hi,
I have a Quadmic for almost 10 years, recently I noticed that the noicefloor increased on chanell 4 to 61dB. Regardless of the position of the gain pot, switches, or if a microphone is connected to the channel. Total Mix shows a noise signal of 61dB, it is pretty audible too, sounds like white noise to me.
Any suggestions what might be wrong? Some of the eelctrolites in the circuit? Channel 4 is closest to the power in might be some interference from there.
Thanks,
J.

2 Reply by MC

  • MC
  • MC
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  • From: Germany/Thailand
  • Registered: 2007-04-06
  • Posts: 24,844

Re: Quadmic issue: decrease in S/N to 61dB on chanell 4

Sounds more like destroyed protection diodes from phantom power. Send it in for a check.

Regards
Matthias Carstens
RME

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