Well, if someone has invented a way to make 800W out of 675W, I'd also like to see their perpetual motion machine.

For what it's worth, mine say 675 watts, too, same as the EP600.

Isn't the output actually more than specified because the drivers are in parallel?

Well, I've been spending the day watching scenes from a variety of Blu-rays: Band of Brothers, WALL·E, Transformers, Iron Man, The Incredible Hulk, and The Dark Knight. I'm definitely feeling a lot more in the bass-heavy scenes. I still haven't done any experimenting with placement of the second subwoofer, so I can only imagine how much more impact I can coax out of it. In any case, based on my experience so far, I am pretty happy with my investment. It doesn't make movie-watching leaps and bounds better than the single EP600, but it is certainly another significant step toward the great home theater I'm trying for.

I have a question for my fellow EP-800 users.
I finally got around to hooking up my sub and after a few hours of listening I turned my system off. As I was passing my sub I thought I heard a noise coming out of the sub. I leaned over and I could hear what sounded like air blowing through the sub. I waited a few minutes but the sound did not go away. I decided to switch the sub off and when I did that I heard a softish thump noise like a lot of air pushing through the woofers.
So the question is after all this rambling, has anyone else had this happen to them or even notice this happening?
Thanks
Mel N.

I used to hear at least the thump with my old Cambridge Soundworks PS1 (also sealed), whenever I would turn it off. Thump... wait... little whistle.

I haven't noticed. I mean, I get a thump when I turn off the sub, but I haven't heard any air.

Ken's reply does seem to makes some sense in regards to it being a sealed sub. I just was NOT expecting the thump. Old guys like me don't need the extra excitement

Yep my 600 thumps when I power it off, I usually leave it powered on all the time though. Never heard any air sound.

I was surprised that my EP350 did not.