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Message: <blockquote data-quote="trumpet" data-source="post: 8421257" data-attributes="member: 628688">Ok, I'll give the cliff notes. This fellow was saying Cross Spectrum sells a Dayton UMM-6 with additional calibration files above and beyond what Dayton provides. 45 degrees and 90 degrees off axis, and the benefit is at high frequencies. I was replying on my phone and I went out to tune my car and forgot about the discussion until today. My opinions are a) get a calibrated mic and use the calibration file b) the shape of the treble response is much more important than the resolution c) someone much wiser than I suggested looking at treble on an RTA at 1/3 octave so I don't see the need for a "special" calibrated mic such as the Cross Spectrum mic, for the car.</blockquote>

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