Found these tidbits of info on the web and Audyssey site:
* The Audyssey mic (pyramid shaped), is calibrated within +/-2 dB from 10 Hz to 24 Khz.
* The Audyssey Pro mic is calibrated within +/-0.5 dB from 10 Hz to 24 Khz
; or perhaps even more extended in the lower and higher frequencies of the audio range.
"The Audyssey Pro mic is individually calibrated by serial number and this makes it more accurate, but that improvement is really only apparent in the high frequency range. The consumer and Pro mics have equivalent performance in the low frequency range
Chris Kyriakakis Audysseyhttp://ask.audyssey.com/entries/7637...ter-resolution
AudioXpress tested the Panasonic Capsule and the results are amazing...http://www.audioxpress.com/magsdirx/...avaras2861.pdf
a) You can use the standard microphoneswithout any calibration
for frequencies up to about 2 to 3kHz. Above this limit, if you require accuracy, the microphones should be calibrated.
b) The distortion of the standard microphones
is acceptable, providing that the peak sound pressure level is always below 115-120 dBSPL.
c) You can use the microphones modified according to Linkwitz without any calibration
for frequencies up to about 4 to 5kHz. Above this limit, if accuracy is required, the microphones should be calibrated.
d) The Linkwitz modification offers
a dramatic improvement on the distortion, making the microphone
suitable for near-field measurements."