Hi - I have a 10" CSI/Speco Dream Series SPW-1000 in-wall subwoofer, and I was wondering how high off the ground should I mount it for best performance? The room is a 20X10 rectangular room and the sub will mount along the 10' side. Since it is a basement, it has concrete floors, but we will be sealing it and then putting carpet over. I'm not sure if that makes a difference or not. I've got the perfect spot near a corner to mount it on, but I can't find anything as to how high off the ground it should be mounted. Thanks!