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Re: equivalent bi-directional mic?

Subject: Re: equivalent bi-directional mic?
From: Mark Griswold <>
Date: Tue, 31 May 2005 18:27:38 -0700
> >What is the card equiv for the WL183 by Shure?
> WL185. 5.5dB higher noise rating, though. Mount two capsules
> back-to-back anti-phase? Maybe use one mic preamp for the pair?
> But how to deal with the PIP polarity...

how about keeping the PIP normal for both capsules, and then using an 
op amp to invert one signal before summing?

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