Ok, I have one vote to leave speakers set to large and one to set mains to small. I guess I'll have to wait for it to arrive so I can listen.

Can someone explain the large/small main speaker concept? If I leave speakers set to large, will the bass be equally sent to the sub and main speakers or will less be sent to the sub and more to the mains? If I set mains to small and my reciever has a built in crossover at 100Hz or 120Hz everything below the cross over will be sent to my sub right? Do you thing a quality sub...HSU, SVS, Axiom etc...will sound good even with such a high cross over?