Would this room work?

Great idea Peter. If the walls are 6 feet high instead of 4, that would be a huge plus!

Well, I went back a re-measured:length is 17' 11", width is 13'7", side knee walls are 44" high then slope to a 4 foot wide flat mid line ceiling that is 8' high and runs parallel to the 17' 11'' walls. Room is carpeted over trusses. Walls are 2X6 and listed as insulated and sound proofed and floor is trusses listed as sound proofed.

My tweeter height is 43 inches and the speakers would likely be at least two feet from side walls (where ceiling height is about 5 to 5 1/2 feet) and speakers would be about 5 feet out from front wall

Whatever the wall dimensions and room dimensios are, you can make it work.

Trying to get that room to sound good will make you go crazy. Sound is going to be 'meh' at best - the 13' dimension is too small and those sloped ceilings will create a nightmare. If you want to have better than average sound, keep looking. Or build one.

Thanks for all the input. Located a space in the basement 16X18 which would work better, but then we passed on the house due to other issues. Did learn a lot that will help in evaluating other spaces.