4. I am looking at going with 2 HSU subs, If I move up to the M80 do you think i would need a 2nd sub in a room of that size?
I don't think that the M80 mitigates the need for a second sub. You need to push a lot of sub-40Hz content for movies.
Hopefully, the smart people will chime in, too.
How do you think the EP500 v3 in-cabinet sub woofer
http://www.axiomaudio.com/ep500-in-cabinet-subwoofer.html would perform? Would it perform as well as or better than two HSU VTF-3 MK4
http://www.hsuresearch.com/products/vtf-3mk4.html ?
