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Author Topic: Doubt with phanton power and ref. signals   (Read 1598 times)

Sam Higuera

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Doubt with phanton power and ref. signals 
« on: June 23, 2015, 07:44:40 am »

Hello, ive been doing some measurements with smaart at home and i was conecting the measurement mic straight to the sound card (focusrite 2i2). I wasnt using a sound board to connect everything.  The output is send to a yamaha HS5M powered monitor.

I send pink noise from the smaart generator Output 1 to the powered monitor and  send pink noise from output 2 to the input 2 as a pink noise reference signal.

But i have a doubt  If i use the measurement microphone on input 1 , i need to send phanton power for the condenser mic, but the sound card sends voltage on both inputs, which means the input 2 is sending voltage to the output 2 of the sound card, which i dont know if could damage the sound card.

Do you think this could be a problem?????
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Chris Tsanjoures

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Re: Doubt with phanton power and ref. signals 
« Reply #1 on: June 23, 2015, 11:50:10 am »

I do not believe this will be an issue.
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I am employed by Rational Acoustics. Besides being a Product Manager for the Smaart Platform, I operate as a fully deployable Smaart Ninja (aka Instructor/System Guy).

Arthur Skudra

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Re: Doubt with phanton power and ref. signals 
« Reply #2 on: June 23, 2015, 01:58:18 pm »

Just use a 1/4" to 1/4" patch cable to take the output and feed it to the input, bypassing any phantom power that may be present on the XLR.  Shouldn't be a problem at all.
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Lyle Williams

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Re: Doubt with phanton power and ref. signals 
« Reply #3 on: June 23, 2015, 04:28:56 pm »

Just use a 1/4" to 1/4" patch cable to take the output and feed it to the input, bypassing any phantom power that may be present on the XLR.  Shouldn't be a problem at all.

+1

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