If you're a FOB (friend of Bud -- Irving M. "Bud" Fried, founder of IMF and
promoter of transmission-line woofers), you know how insistent he was that
you need two woofers, not one.

I'm inclined to agree, for a number of reasons -- the preservation of LF
directional effects, smoother overall response for mono signal components,
etc.

I realize the LFE channel is for a single woofer. But if price isn't a
consideration, why not put subwoofers on your main channels, as well?