ok just liten to me - ask almost any person on this board whether you should use a ported setup or a bandpass setup. my guess is that 95% of the people would say ported. now unless you have heard a pair of 10" type-r's in a bandpass box before, i seriously wouldn't do it. like they said, it's difficult to have a good box that works how it should, and anyways it would barely be louder than a ported box and the ported box would sound much better. if you're stuck on a bandpass box though, i woud make sure and hear some type-r's in a bandpass box (and if you like it then buy that bandpass box)