I have a 990/7500, Axiom speakers (M80's-main, VP150-center, QS8-surrounds), and an Outlaw LFM-1 EX sub. I have an analog SPL meter from radio shack and I need some help. I think I must have done something wrong.

I set the volume on the 990 to 0dB and used the manual test tone option from the menu. I calibrated all the speakers to 75dB, but nearly all of my trim levels are set anywhere between -9 and -13dB, which doesn't seem right. I had to turn the sub trim level down to -15dB (it's lowest setting) just to get it to 80dB.

Does this seem right? Any suggestions for what I've done wrong? Might it have to do with the sensitivity rating of the speakers (which I don't know off the top of my head and, to be honest, what that really means anyway)? Also, should the surrounds be calibrated at 75dB as well?

On a related topic, any suggestions for crossover frequencies? I think I have the M80's set for 80Hz, the center at 120Hz, and the surrounds at 100Hz.

Any help would be appreciated.