I would appreciate recommendations on setting up my F-2 Home Theater System (Fronts: F-2, Center: C-2, Surrounds: S-2, Sub: Sub-12). My receiver is a Yamaha RX-V663. The Sub is in the corner behind my TV stand. The gain is set to just under half. The crossover on the sub set to 120Hz and on the receiver to 80Hz. The fronts, center and surrounds are all set to SMALL in the receiver setup menu. The bass is very powerful at this setting, but it seems like dialog is not super clear...just a little hard to hear. Is this how other people would setup these speakers and receivers? Other recommendations? Thanks.