Originally Posted by commsysman /t/1524431/spl-meter#post_24541840
Keep in mind that the transducer (microphone) being used has a non-linear frequency response, and has cutoff points.
That will limit the accuracy or usefulness of any setup you use above or below its frequency limits.
Originally Posted by DonH50 /t/1524431/spl-meter#post_24543090
Arny, I am almost certain the response you show from Ethan's site is that of a room, not of the microphone.
If you want a comparison to a measurement mic, throw in the curve for my Earthworks M30...