Seems to me that you should be able to solve this without using that dynamic range control.
A few questions:
- Do you have the VP150 tilted down so that it points directly at your listening position?
- Did you calibrate by pointing the spl meter directly at each speaker as the test tone went from speaker to speaker? (I believe the correct method is to point the spl meter straight up.)
- Do you have the VP150 set to "small" or "large"?
- If you have it set to small (as it probably should be), are you sure you calibrated your subwoofer correctly? IMO, too much sub will muddy your center channel when you have it set to "small".
Keep trying, it should sound pretty damn good.