View Full Version : 737NG microphone bias voltage
seb62085
2nd Jan 2021, 01:10
So im looking at using a modmic (typically used for PC gaming), together with a WYZE noise cancelling headset. My issue is with the DC voltage bias for the mic. the modmic can accept up to 12v.
What is the DC voltage bias for the 737NG?
Fursty Ferret
2nd Jan 2021, 13:43
I think you're asking for trouble if you use anything other than equipment approved by your airline or Boeing.
seb62085
2nd Jan 2021, 18:56
Our airline does not approve anything.. nor does boeing for that matter. Ill be fine
Uplinker
3rd Jan 2021, 11:49
I don't know the answer, which doesn't help you. However, phantom power for microphones can be as high as 48V, so be cautious. Perhaps you could take a voltmeter with you and simply measure the voltage across the microphone pins of the headset connector.
But I would heed Fursty Ferret's warning - the last thing you need is smoke in the cockpit or a loss of communications through using non-approved home made equipment :eek: