When I was listening to a Reggae CD (one song in particular) that I'm very familiar with and has a lot of bass. The bottom end was virtually nonexistent at one point in the song where it's just bass. I'm comparing my EP500 to my previous paradigm which had far less output but I noticed the bottom end. On Saturday I will be calibrating my system using a calibration DVD. Aside from the DVD calibration settings, what else can I do to improve the bottom end?

My Denon AVR3801 doesn't have a adjustable Hz setting on it. My front speakers are set to "small" which defaults the receiver to 80 Hz.

Going from memory the settings on my sub are as follows:

crossover-bypass
volume-between 8 and 9 o'clock
phase- 0
trim-flat


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