Pin declaration of balanced input / output XLR


I need assistance in some clarification;

I tried a pair of MBL's 9008 A mono blocks in my system recently and did not like the sound. I had them hooked-up to my Audio Research Ref3 pre in balanced configuration, XLR. When I pushed the button on my remote "INVERT" I preferred the sound.

I just recently found out that MBL's XLR inputs pins are differently configured then my AR.

Pin 2 on the MBL XLR is Inverting and on my AR it is Non-inverting.

By pushing the "INVERT" button on my pre is this correcting this phase issue properly.

I asked about just swapping the cables and was told this would not work properly.

My understanding is to correct this I should just have an IC with one end which would be connected to the amp re-terminated. Swap Pin 2 which is Inverting to Pin 3 which is Inverting, is this correct.

I would assume the MBL pre-amp XLR outputs would be the same then so if connecting to any non MBL gear you would need to do this also or you run into phase issues.

dev

Showing 1 response by rockvirgo

Sounds like the inverting button does the trick for you. Flipping 2 and 3 at one end of the XLR ought to accomplish the same thing.