Have you tried putting the sub in the corner of the room? I have my EP500s at only 6:30pm setting, and the AVR is set at -5db for the sub. Something does not sound right.

Do me a favor and temporarily set the front's at +3db and tell me if you perceive more "thump".

LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7