I actually decided to cancel the driver/amp order before it shipped so I could read through more old threads and make sure I'm making reasonably informed choices on the components. I've decided to build for sure and will do a pair of custom Marty variants to fit the dimensional constraints in my room (somewhere between 24x24x24 and 24x24x42, either front firing or down firing). I had forgotten that one of the guys that I work with actually has a side business making speakers, and he offered to do any finishing work. So it's really down to the box dimensions and component selection. Based on what I've seen, the UXL-18, SI HT-18, UM15-22 and UM18-22 all seem to be very popular in the forum, but the UXL-18 is out based on price because I'd like to try to keep this closer to $1k. If I do the SI HT-18 D4, it looks like it is well proven in the Marty boxes and could save a little money and go with a smaller box. But somehow they look cheap to me and don't seem to model as well, and I have been gravitating to the Ultimaxes. But both the UM15 and UM18 seem to need bigger boxes, and I understand that the UM18 and SI18 D4 are both not due out for 4-6 weeks (or more). But it's not clear to me how small I would be able to get away with for the Ultimaxes, and I'm not familiar enough with WinISD or experienced deigning speakers that I'd trust anything that I model. So what would you guys recommend?
TV 2013 Samsung 75" UN75F6300
AVR 2013 Denon X2000 w/ Audyssey XT
7.2 3 DIY 1099s (LCR), 4 Yamaha NS-IC600WH + 4 Dayton ME820C (SL, SR), 2 DIY OS-MTM (BL, BR)
Subs Two 19Hz DIY Ported UXL-18s + iNuke6000DSP
Calibration CALMAN5, REW, UMIK-1