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2x 48v to a stereo mic (damaged?)

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Adriano Castaldini
2x 48v to a stereo mic (damaged?)
on Aug 11, 2017 at 2:44:46 am

Hi everybody,
I'm afraid of having damaged a mic...

I've bought the Audio-Techina BP4025 mic that's a stereo X/Y mic with a 5pin-to-2x3pin cable. I connected the mic to the stereo-recorder with the two 3pin-XLR (Left and Right channels) and I gave 48v phantom to BOTH the channels (so the mic itself received 2x 48v). Later I discovered that giving the 48v just to one single channel (i.e. left) was enough to power both the channels as well.
So arrived my doubt: Is it possible that I have damaged the mic giving 48v to BOTH channel? Or not?

Thanks a lot.


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Richard Crowley
Re: 2x 48v to a stereo mic (damaged?)
on Aug 11, 2017 at 4:56:39 am

Extremely unlikely. Audio-Technica's document mentions no prohibition about powering only one side. Did you actually experience any problem with the mic after providing phantom power to both the Left and Right outputs?

I own (or have used) stereo microphones from 4 or 5 different manufacturers (including Audio-Technica) and I always provide phantom power on BOTH sides. In fact mixers (or recorders) which provide individually switchable phantom power per channel are rather in the minority.

---------------------------------------------------------------------------------
Recording audio without metering and monitoring is exactly like framing and focusing without looking at the viewfinder.


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Eric Toline
Re: 2x 48v to a stereo mic (damaged?)
on Aug 11, 2017 at 6:16:37 am

In the consumer or pro-sumer world global phantom power is the norm. Once you get into the professional world independent phantom is the standard.

"I push the RECORD button and hope for the best"


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Adriano Castaldini
Re: 2x 48v to a stereo mic (damaged?)
on Aug 11, 2017 at 12:52:23 pm

Sincerely I didn't hear something particular after having powered both the channel. I simply noticed a "noticeable" difference between the sensibility of one capsule on the other (i.e. when 48v was on both cha., right capsule captured a bit louder than left capsule).


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