Warning: pre-historic thread.

For the measurement mic, www.linearx.com's M31 microphone ($150) comes with a floppy disk with all the calibration data (frequency response measured in anechoic room with known speakers). If I aligned my speakers to that, I'd have response as good as the microphone, which is +/-1dB. Has anyone had any experience with measurement microphones, speaker measurement or anything related? In theory, I can get some absolutely superb sounding speakers simply by applying the inverse of their response. No idea how it'll turn out in practice, but I'm sure I'll have fun trying :)

Have you tried this yet? I'm very interested in this too.

For the M31, what would you connect it to to do the actual measurement? It seems designed for use with Linearx's boards and software and those are expensive.

How about the Radio Shack sound-level meter (cat# 33-2050)? People have good things to say about it on the net and there are published corrections that compensate for its response curve. I'll probably give it a try.

Borislav