Phase Control Switch

[kingofgrills]

Big Daddy, does a room's characteristics influence signal cancellation at all, or is it just competing bass output from the systems speakers? I always thought room characteristics could influence this too, and adjusting the speaker phase could help alleviate some of the signal cancellation.

Also, you mentioned using an 80 Hz test signal to measure SPL and adjust phase (assuming an 80 Hz crossover point, which my system is using). Do you know where a steady 80 Hz test signal can be found?

Thanks