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1 year ago
A portable PA system I'm looking at provides 4 XLR inputs and switched phantom power... But this is switched on all 4 not per-channel.
If I have a mix of powered and non powered mics could this be a problem? Can phantom power be damaging to microphones that don't require it?
Mar 7, 2022 at 21:52
Mr. Boy Mr. Boy
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The existing answers are correct, but just to simplify a bit into a 'common rule'.
If your mic was made any time in the past 50 years or so & you use standard XLR>XLR cables, there is no problem at all.
Mics that don't need phantom just ignore it. They don't even know it's there.
Old ribbon mics are known to be 'not safe' for this - but if you owned one, you'd probably already know this.
Mar 8, 2022 at 7:23
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As long as you don’t have a ribbon microphone then it will not damage your other microphones.
Mar 7, 2022 at 23:07
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It depends on how your microphone is wired. If your microphone is wired symmetrically the two +48V contacts will just sit on opposite sides and create a 0-potential. This is why it is called phantom power, as you do not see it if you do not need it. If you microphone is NOT wired symmetrically it definitely can. E.g. if you have a microphone on a Mono jack and use some XLR-Jack converter you might give that microphone quite a bad time.
Mar 7, 2022 at 23:34
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