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I have decided to use a patchbay to connect the wall jacks to the back on the console. I have ADC patchbay with punchdown's in the back. My question is will I reverse the + and - on the patchbay when I wire it up ? There is a phase button on each channel. The mixer ( Tac Scorpion )shows the XLR and line inputs as being =

pin 1 - sleeve
pin 2 - -
pin 3 - +

Comments

KurtFoster Wed, 09/22/2004 - 13:38

The British do this stuff just to screw us Amerikuhnz up ... :D

It shouldn't make a difference as long as you remain consistent across the entire patch panel ...

If you were to plug a mic directly into the TAC, you wouldn't be flipping the polarity .. so why bother with a patch panel .. ???

The goal is when air is pushing the diaphragm of the mic, the signal should cause the speaker to push, creating compression of the air, and when the diaphragm pulls, it should cause the speaker to pull, creating rarification of the air.

Technically, you want your mics and speakers to be in phase with each other.. so you should probably flip the polarity of the TACs outputs to interface correctly with gear that runs pin 2 (+) hot.

What may be an issue also is if you have other gear interfaced on the panel as well, that runs with pin 2 hot (+) .... then you may run into some problems, if some things get flipped and others don't ... But the inserts are unbalance so I don't think this issue would pop up very often. Just watch for this..

The idea is to keep all things coming and going in phase with each other at all stages ..