I have a pair of aeons with a grotto sub. B&K AVR507 amp. Should probably upgrade to the Depth or Descent for the sub, but I am having trouble getting tight bass response. I set the crossover LFE at 35Hz, and inverted phase from the amp. This gives me the best so far, but I can think I can do better. Has anybody played with the 'room equalization' and 'resonance' settings on the B&K? Any other tips/hints.