Axiom Home Page Forums General Discussion Advice from Axiom Owners recommended calibration of multiple subs?

I would start by placing your sub dB level on the receiver to the neutral position of 0dB. Then calibrate each sub One by One individually to match the same levels as the other speakers, usually 75dB. Adjust the volume (gain) on the sub not the receiver. Then turn off sub 1, and calibrate sub 2, etc...then turn them all on at once at the end. If you have them positioned "around" the room, the peaks and nulls will help cancel each other out for a more flatter response, which is the goal.