help needed with phantom power problem please?

Discussion in 'Microphones (live or studio)' started by jayr55, Jan 19, 2007.

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  1. jayr55

    jayr55 Guest

    i have a akg c3000b condensor mic, a roland jx 305 groovesynth keyboard and a drum machine all connected to a behringer eurodesk all running into cubase sx, everything works fine and have been able to make some good recordings over the years, i wanted to record a jam the other day with guitar, bass etc but realsied when phantom power is switched on to enable to mic to work as well, the keyboard distorts, the desk doesnt have a individual +48 for each channel and just an overall phantom power switch, how can i have both inputs at the same time without distortion from the keyboard??
  2. moonbaby

    moonbaby Mmmmmm Well-Known Member

    Feb 23, 2005
    Does the Roland JX have an XLR output on it? If so, don't use it! At least not in this context. Use the 1/4" output to a 1/4" line input on the mixer. The only device that should ever be connected to an XLR with phantom power engaged is a mic (non-ribbon) or a suitable DI box. Applying phantom power to an active device that wasn't designed for it can bring great sorrow to the performer. Distortion, hideous noises, even failure can occur. Use the 1/4" line inputs for the synth.
    NOW, if the AKG is the only item hooked up to an XLR mic input on the mixer, something else is wrong. Either the mixer can have a defect (Behringer? nah....), or it may just be a "red herring" in that something unrelated is causing this issue and making you THINK the phantom is the problem....
  3. jayr55

    jayr55 Guest

    phantom power problem

    i have been using XLR outputs on the roland jx, i will now switch to 1/4inch, and should resolve the issue.

    thanks for the info
  4. jayr55

    jayr55 Guest

    thanks for the info, i have been using XLR inputs on the mixer for the keyboard and now switched to 1/4inch and its working fine.

    thanks again for the advice.

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