madbeanpedals::forum

General => Open Discussion => Topic started by: warriorpoet on April 17, 2018, 06:59:30 PM

Title: XLR to unbalanced and back again- Grounds?
Post by: warriorpoet on April 17, 2018, 06:59:30 PM
Looking at XLR +/-/G connections. The balanced/ unbalanced converter boards I'm using have spots for +/-/G on power and +/-/0v. I'm really not sure how to reference to +/- on the power jack. Anyone have any guidance?
Title: Re: XLR to unbalanced and back again- Grounds?
Post by: BryGuy on April 17, 2018, 08:55:17 PM
Sounds like it may have phantom power? Just guessing. I believe phantom power has +v/-v/0v, pins 2/3/1 respectively. Pin 1 is also ground. Of course you have +audio/-audio/g, which again is pin 2/3/1.

Does any of that help?

Also do you have a schematic?
Title: Re: XLR to unbalanced and back again- Grounds?
Post by: bsoncini on April 18, 2018, 04:52:32 AM
I'm guessing the board you have expects a bipolar power supply. As in +/-12v, +/15v etc. Hence +,- and ground. Many electronics in the audio realm are like this except guitar pedals.

I've used this before but I stuck a 78l15 and 79l15 on the + and - outputs. http://tagboardeffects.blogspot.fr/2014/01/bipolar-voltage-converter.html?m=1