sweetbeats
Reel deep thoughts...
Yes you have to power both +/-15VDC power rails to test audio.
But back up.
You are looking at AC power supplies? For what?
If you are looking for a bench power supply, don’t worry about that right now. Get those clip leads/jumpers I linked earlier. You are going to use those to connect the PCB to power while it’s out of the mixer...but you’ll just connect it to the mixer’s power supply...you’re using the jumpers like extender cables.
If you *did* power the PCB with something besides the mixer’s power supply you would have (a) DC bench supply(ies). These come in many forms and flavors. I have a couple different ones on hand at the moment, a dual 0-50VDC variable current limiting bench supply, and another that produces fixed 12VDC, 5VDC, and variable 0-30VDC. But guess what you use to connect the bench supply to the PCB? That’s right...jumpers, clip leads, etc.
But back up.
You are looking at AC power supplies? For what?
If you are looking for a bench power supply, don’t worry about that right now. Get those clip leads/jumpers I linked earlier. You are going to use those to connect the PCB to power while it’s out of the mixer...but you’ll just connect it to the mixer’s power supply...you’re using the jumpers like extender cables.
If you *did* power the PCB with something besides the mixer’s power supply you would have (a) DC bench supply(ies). These come in many forms and flavors. I have a couple different ones on hand at the moment, a dual 0-50VDC variable current limiting bench supply, and another that produces fixed 12VDC, 5VDC, and variable 0-30VDC. But guess what you use to connect the bench supply to the PCB? That’s right...jumpers, clip leads, etc.