Ehrlund EHR-M Condenser Microphone I’m not sure why I was so surprised to learn of Ehrlund Microphones’ signature use of triangular diaphragms in their microphones; after all, rectangular ones are quite popular these days and a ribbon mic’s ribbon is indeed a rectangular strip. We know that circular diaphragms have the most resonant properties (i.e. a drum head), so it stands to reason that a triangular one would have less resonance and therefore a different response. In my tests with the Ehrlund EHR-M, I found the mic to perform just a little differently than the norm for a cardioid LDC; a difference that was minimal in some cases and impactful in others.
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