An elf passed my way and sprinkled a little Christmas cheer: Specifically, a $300 touch to use as I wish. I've determined a new sub was in order. It's intended for my 12x10 den to supplement a Yamaha YSP-3000 sound projector that's hung under my 42" Panny plasma, centered on the 12' wall. We sit about 9' away form this. I could use some help with a selection. Thanks in advance......Ed