Ok for starters, you need to calibrate by ear. Go into your speaker setup menu on the Yamaha. Then, as you pan from FL - C - FR - RS - RSB - LS - LSB, raise or lower the volume on each until they seem the same volume.

Next, fire up that Pink Floyd disc, and start with the subwoofer at 1/4 volume. SLOWLY turn up the bass until it sounds good to you.

Next - fire up a movie. Then let us know what you think...