Randy, thanks a ton for posting your experience. As my signature shows... I have a 600 on order that I am planning on pairing with an existing Earthquake sub. Your experience has me worried that perhaps I should cancel the order and go with something with less input impedance.

I will admit not being nearly technical enough to understand all of the points and counterpoints raised her, but it's enough to worry me that I'm not going to get the desired results when connecting two subs to my Denon 3808.

Am I overly worried about this or should I be dialing back to the 500? Any input is very much appreciated from all those commenting here who seem to be quite knowledgeable on this subject.

Epic 80-800: HG Cherry