[BC] Out-of-phase mikes for noise cancelling

[donroden at hiwaay.net]

A microphone with a low freq response is best for using it as an  
out-of-phase cancelling mike for air conditioners.  A mike processor  
on the main mike can get you chasing levels if it is set up with lots  
of compression.

I've thought of using a "y" xlr adaptor before the processor to eliminate
this, but I get satisfactory results just feeding a stick mike into a  
different channel.

Don R