Jealous. I was going to build 2 but I'm running out of room. I'm already building new boxes for my QSC 2150's which will give me an extra 4 feet (wide) behind my screen. Still deciding if I want to hide both PA460 MBM or 4 SI-18" subs with the speakers. Once the weather cooperates I'll start on my subs. Either 2 Maximus v.3 or Tuba HT.
If I decide not to add seating to my riser, that opens up a lot of real estate for boxes. Not sure I need seating for 8 when its only the kids and I. I may actually add a bar area for the and/or adults to eat while a movie is playing. Leaving the seating area on the main floor. Ughh. decisions, decisions.
I'll be watching your build closely. Today its 22 degree, yesterday 68 lol Crazy arse weather..
Marantz 7702mk2, Panasonic 8000 w/ 130" AT Screen HTPC w/30 tb
DIY QSC SC-2150 L,C,R (10) QSC SR-8101 sides, rears & atmos/dst-x
DIY (4) Fusion Tempest
DIY (2) UM 15 "Sub's (4) SI 18's (2) PA460 mbm
(3) 15" Celestion woofers (1) Crown XLS 1002