I have a small-medium room 12x20x8 (1920cuft). 3 walls are made of concrete and the fourth made out of drywall. I just ordered a couple of sealed rythmik f15hp but I am wondering if the fv15hp would have been a better option. From a size stand point, the sealed version appealed to me and I was thinking that with my size room, it should be sufficient at higher levels. I use my room for about 90% home theatre and 10% music. What do you guys think?