Mike:
As I recall, the output of the RSM-191 at the seven pin connector consists of unbalanced audio on two leads, a +48 volt power lead, a -48 volt power lead (needed for the side capsule powering if I remember correctly), a +10 volt power lead,...
I'm somewhat embarrassed to say that I discovered I was trailing the cabling over a mains connected PSU which was causing the hum.
Question still stands though - is it possible (or even sensible) to bypass the MTX and wire a XLR-5 cable to the 70...
This should be possible, right? (Though may lose additional shielding?) My BP4029 (for example) is 5-pin through-and-through and I've never experienced interference.
Let me give you some context:
I picked up the RSM 191 as an eBay "bargain" (alw...