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U47 noise question

Discussion in 'Microphones (live or studio)' started by groundcontrol, Sep 18, 2001.

  1. I have a U47 now that is suffering from a bit of very low freq hiss. Also, I find it has a relatively low output. (At least compared to a C12 that we`re using on the same project. I can't compare it to another 47.)

    Now the tech person at the studio has replaced all the caps in the mic and power supply. Also the tube socket has been cleaned. The only part that has not been checked so far is a 110 ohms ceramic resistor in the mic that I've been told could be problematic. We checked two different tubes and the noise problem is similar. The capsule is totally mint looking. Has anybody had similar experiences with one of those? There are not a lot of tech persons experienced with U47's around here, so any useful info would be appreciated!

    Eric Filteau
    Ground Control Studio
    Montreal, Canada.

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