I don't think this is OT as it pertains to the 800... though I'm straying a bit.

Would a dual-woofer sub such as the 800 help to smooth nulls and peaks in a room such as mine?

There's a pert of me that says "no" because the drivers' proximity difference is minuscule in comparison the the wavelengths produced.

But others frequently find that moving a sub just a little bit makes a big difference? Maybe two drivers 24" apart would make a big difference?

Again, I think Axiom should send an 800 to me for testing. After I mod it into a coffee table, they won't want it back anyway! \:\)

::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::