Hello! I don't know if I've misunderstood how to use Avia, but after calibrating my HT with it (just using my ears, don't have an SPL-meter) I have two conclusions: 1. My RSP 1066 doesn't seem to do correct bass management. After I set the crossover frequency to 80 Hz, I used Avia to verify, and all my speakers happily rumbled past 80 Hz - the fronts and center down into low 40's ... Shouldn't the RSP 1066 cut everything below 80 Hz (to fronts/center/surround) when I set the crossover frequency to it? 2. Setting my fronts and center speakers to large sounds a lot better than the "generic" advice of small on all when using a subwoofer. After my Avia adjustments (small on all, 80 Hz crossover) I tried "Iron Maiden - Rock in Rio" (DTS 5.1) and it sounded awful - I like Maiden, the music wasn't the problem ... I had to turn down the sub to half volume to get a decent sound. So I'm back to (basically) my original settings: large fronts and center, small surrounds and crossover set to OFF. My sub is active, so I let it do its own crossover frequency handling. Does anyone have similar experiences with Rotel and/or Avia?