Questions & Answers

bad tv channel sounding noise when 48v is on

0 votes
asked Sep 27, 2017 in Studio One 3 by sbreezy239 (230 points)
was having a problem with my 48v not connecting to computer and would not recognize audio box when pressed but i solved that due to 2 bad usb cables sold to me. so i went out and bought a brand new cable seperate from audio box sold. its now currently working but now im heard like a bad tv channel sound when on...

1 Answer

+1 vote
answered Sep 27, 2017 by (1,300 points)
A couple of things to troubleshoot, to make sure we get those out of the way, first.  First of all, is there a microphone, or anything else that requires phantom power connected to the preamp that the 48v phantom power is applied to?  If so, does that microphone need to be on and plugged in, or are you planning on using it, immediately?  If there is no need for it, immediately, deactivate the phantom power and disconnect the microphone.  The noise should go away.  However, it you DO need the microphone (or device that requires the phantom power), you might want to consider putting a noise gate on the track that the preamp is assigned to.  With a noise gate, you should be able to get a handle on the background noise generated by the preamp.  In my set up, I find between -18dB and -20dB is sufficient to squash the static of phantom power (and the other ambient noise that can be found around my home studio).  Good luck!