The Axiom description certainly implies the DSP chip does a great deal more than help it go low. I'm curious how much it helps as well. I thought some one on here felt the 500 was better than the 600 b/c of the DSP, but I could be wrong on that.

Panny 3000 PJ, 118" Carada, Denon 3300, PS3, Axiom QS8, PSB 5T, B&W sub, levitating speaker wire