Now when are they going to make a v4 of the 350 in a 600 cabinet?

Just picked up one of these from Radio Shack. Plan to run the 350v3's through the SMS-1, and just leave the 600 by itself since it is DSP controlled. Now I have to figure out placement of these 3 subs.

Randy, what you indicated in your first diagram should be fine: 600 front and center, 350s in left and right back corners.

I'm also thinking about trying 350's up front spread out a bit, and the 600 either on the back wall, or nearfield left wall behind the seating area the same distance (delay) as the 350's.