Now I'm officially in my new HT I'm having to make some calibration compromises that I'd like run by other, more knowledgeable members. With 12,500 cubic ft there is a lot of space to fill with sound. I am no longer able to calibrate to 85dB and have settled on 80dB where most of my speakers need to be on +6 or +7 to achieve this. I typically listen at -10dB (off the calibrated 80dB remember) I have a Lexicon MC-1 My Current Front 3 are Celection A2s with an A4C Bi-Amped with Rotel 991 200W RMS THX Power Amps My Sides are Celestion A1s and Rear are some large Kenwoods right now from an older HiFi I had lying around. Sides & Rears are power buy a single channel each from a Rotel 1075 5 Channel THX Power AMp. All speakers are set to Smalls(80) I have 2 Servo15 Subs The sound is actually very good and seems to fill the space very well. I am wondering whether I'm causing any un-due pressure on the kit or losing any detail by running the system at these settings? Thanks for any input/advice, Mark.