I need help picking out a box size. I want sealed not ported. I will be having 4 enclosures built. Each one firing into the back of a seat. I read where auburn008 made his 4.5 cu ft. Can someone who has that program please help out. Thanks in advance.
I'll try and model something tomorrow, but here's a thread modeling the HST for you to look at tonight that shows you what you would get with the 9200. There really isn't a huge difference in size for what you would be able to fit behind your chairs. You could go as small as 3 cubes if you need to, but I would go with 3.5-4 cubes net from what I have read looking through all the threads I could find on AVS regarding the HST vs Othersubs. The 1-2db difference here and there is not audible. Besides, you are going to get the crap beat out of you nearfield with these.
I'm thinking a 22" cube (double baffle plus a recess) would be nice if it fits. It gives you around 4 cube net and plenty of room around the driver for a 3/4" roundover.