I have just aquired two 15" Dunlavy audio subs, and 2 10" Dunlavy audio subs. I have the specs on the 10's but not the 15's. But it sounds to me like you dont need to worry about specs on the sub when you are doing infinite baffle. But I guess the driver itself has to be designed for it????? Well anyways. I may sell those and get something different anyways. But my question is, I have a room with a vaulted ceiling. The other problem is the only wall I could do an IB in goes out to the garage. Now how would that work? Is it possible to do in this room? The only other place I can think of is one wall is about 6-7' off the ground with an opening directly below it. But that wall goes into my bedroom upstairs. So is an IB even feesable in this house? The wall on the left goes out to the garage. The full length. This is the wall Im talking about that goes up to my bedroom.