Would phantom power fry my Sony wireless receiver?

S

sbrenner

Active member
I've got my Sony URX-P2 wireless tuner feeding a Sound Devices Mixpre pre-amp. I also have a channel fed by a Rode NTG-3 mic. The NTG-3 needs phantom power and the mixpre applies phantom power to both channels. Will the phantom power on the mixpre fry the URX-P2?
 
I not familiar with the Sony URX-P2 but if the receiver's output is unbalanced, I would not use it w/ PP or without a blocking transformer. OTOH, if it's balanced, it will likely work without issue.
Addendum: According to Sony's "URXP2/4244 UWP Series Portable Tuner" specs, it's unbalanced via an 1/8" TRS jack where the 'Tip' and 'Ring' are fed the same signal for consumer 'stereo' mic inputs.
 
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Even if it were a balanced input I would be a bit wary of trying that, but since it is apparently an unbalanced input I would definitely not consider trying that.

If you need to have both hooked up, suggest getting an external phantom power supply for the Rode and putting that between the Mixpre and the mic, but connect the receiver directly to the mixpre - then leave phantom power off on the mixpre.
 
Another option that might be less of a hassle is to get an in-line isolation transformer. That will block the PP to the receiver and keep everyone happy.
 
fde101 said:
Even if it were a balanced input I would be a bit wary of trying that, but since it is apparently an unbalanced input I would definitely not consider trying that.

If you need to have both hooked up, suggest getting an external phantom power supply for the Rode and putting that between the Mixpre and the mic, but connect the receiver directly to the mixpre - then leave phantom power off on the mixpre.
Click to expand...

Do you know of a small external phantom power supply that runs on batteries and is affordable?

Thanks
 
So I guess this would plug in between the wireless receiver output and the mixpre input....?
Something like this:
http://www.bhphotovideo.com/c/produ...L_ISOXL_Line_Level_Isolation_Transformer.html

BTW, I tested the wireless feed with and without the mixpre and the signal is pretty weak without the mixpre
and almost too hot with the mixpre. But then I realized that I was sending a mic signal into a line input, so the
signal was fine directly into the recorder when going into the mic input.

Thanks
 
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