Mad:

Considering that I'm only putting out 35 W/Ch from my Tube Amp that will be augmented by 2x500 W/Ch from the 400s, I think that the 2xM2 plus 2xEP400s system will give most bigger towers (unless really large & expensive) a run for their money when doing audio only duties.

For HT, the prevailing wisdom is that bigger subs - preferably at least two - would be more appropriate for more powerful & dynamic movie LFEs...

TAM