Lex; If you touch that volume level on the sub I will just say it will confuse the calibrations that satisfy you at this moment and throw them off. I would try what I suggested thru the receiver. Scientifically, our ears become more bass sensitive as volume is increased. This is called the FLETCHER-MUNSON CURVE. Lex, put the TWISTER disc into your system and try what I suggested. The hell with the Decibels in this case. The idea is for you to be able to return to the setting that works well with the enormous LFE soundtracks. Kelsci