--On 14 November 2013 20:38 +0530 umashankar manthravadi
<[email protected]> wrote:

> one ground pin, two figure of eights with one or both receiving
> phantom voltage, and two pins, one from each figure of eight, out of
> phase for the Omni.

I'm picturing the pins carrying:

1 ground
2 power
3 W+, 0.5X-, 0.5 Y-
4 0.5 W-, X+, 0.5 Y-
5 0.5 W-, 0.5 X-, Y+

Then:

W is (3, 4+5)  
X is (4, 3+5)
Y is (5, 3+4)

Unwanted signals then cancel out, being common-mode.

Paul


-- 
Paul Hodges


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