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Author Topic: Phantom power ok feeding back into mixer outputs?  (Read 4394 times)

TJ (Tom) Cornish

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Re: Phantom power ok feeding back into mixer outputs?
« Reply #10 on: November 26, 2015, 10:37:20 am »

I'm using a UMC 404 for Smaart I-O.   Phantom power is either on or off for all 4 of the unit's inputs.

So if I use Input 1 as the reference channel with a line level signal coming from a mixer or a processor,
and use the remaining channels for measurement mics with +48v engaged,
aren't I also sending +48 v back into the mixer's or processor's output?


It looks like it must not hurt the mixer or processor based on the Smaart I-O devices I see people are using....
....but it it completely harmless, and if so, how so?   

Many thx.......continue to realize how little I know.......!
Depends on the mixer. My personal experience - A&H GLD is OK, Yamaha 01v96 OK but sometimes makes pops, Soundcraft Spirit 8 - very not OK - blown output.
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Jerome Malsack

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Re: Phantom power ok feeding back into mixer outputs?
« Reply #11 on: December 02, 2015, 01:40:09 pm »

When in doubt use the hum blockers. 

Ebtech, Behringer HB100,  transformer 1:1 line.

 
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