Hi all,
Thanks for the feedback and kind wishes re my trip to LV. pmbuko is right; Doppler stuff isn't related to the time-alignment of drivers.
The Doppler distortion results when a woofer cone is moving outward to reproduce, for example, a 40-Hz tone at the same time that it's reproducing a 100-Hz tone. The 40-Hz movement would add Doppler components (pitch shift?) to the 100-Hz tone. Is it audible? Does anyone care? Don't know; will quizz colleagues at CES.
In fact, it still amazes me that a woofer can reproduce two or more frequencies simultaneously with reasonable fidelity. Think about it: the cone is vibrating at 40 cycles per second at the same time that it's vibrating at 100 times per second. Huh? You'd think the results would be total grunge, not music.
Regards,
