1600 sq inches (10.66 sqft) mouth area, theoretically should have a flare of 25Hz?

just a normal 2'x2'x4' 10 pi with an extra fold, just like you said.

I could go for a couple of these in my room :P

Are the dimensions right?

p.s. I called the store... My CH-3's won't be in for another two weeks now :(

Adam