Earlier in the year I bought the Acoustic Energy Aegis Evo 3B 7.1 speaker package and Denon AVR-2805 receiver. I'm very happy with both, especially the clarity on the AE's. I understand that the subwoofer is probably the weakest part of the package but this is a problem that may affect other systems. I've set the speaker levels (both by SPL and Denon's auto-setup) and all channels (including .1) sound fine and accurate when played at a reasonable level. Recently I've tried bumping up the main volume by a couple of dB on some loud films and in a few action scenes the sub has distorted. It basically rattles instead of rumbling and my attention is diverted to the sub instead of the bass being felt. If I turn the volume down it returns to normal. I'd like to know what I can do to prevent this distortion and whether these should be done permanently or only when using the higher volume e.g 1) Buy a second sub woofer (obvious but expensive and impractical) 2) Share .1 sound with LFE+Main channels and not just LFE as it currently is 3) Reduce LFE sound level on receiver by a few dB 4) Reduce LFE sound level on sub woofer (it's currently fixed at half way) 5) Change the cross over frequency (currently 80Hz on receiver and maximum of 120Hz on subwoofer - which shouldn't matter as .1 specification on Dolby Digital and DTS is fixed to 80Hz. Reducing the LFE level is the most sensible choice but then at lower volumes the bass doesn't have as much impact which is a shame. This is my first post so I'm sorry it's long.