Originally Posted by mnnc
My pre/pro is adjustable from 120hz - 40 hz in 20db increments...I like 60 hz x-ver setting. My mains are set to large as they go into the 20's themselves with the woofers being biamped, center set to small which gets crossed over at the 60hz, and surrounds set to large as they are 8in in ceiling rated to mid 40's hz. So only the center is being cut off at/about 60hz...the rest are producing full range as designed. The idea to set spkrs to small vs large is really about the burden on your amp's and/or how well the mains blend w/ the sub keeping in mind that subs work best down low. I cringe at the suggestion of setting all my speakers to small and send all predetermined freq's to sub by the x-over setting chosen. Why waste that upper bass, lower mid bass punch when it is the mains providing that punch. Bottom line is try what sounds best in your setup. My multi ch amp is only driving the mids- up. I think many people x-over the mains to sub too high and it sounds full but boomy rather than deep/tight/quick.
I run all of my speakers at "Large" with my LFE at 80 hz and the reciever sub setting as just "Yes" and not "Plus" (double bass, LFE and main bass through the subs). I will use the plus though if I feel that the bass is lacking on the LFE.