The room size is 31 ft by 11”3’ by 7, the PB2 Plus, yes I was really close in getting that instead of the PC +, with shipping thou the extra $400 I just didnt have, im sure the upgrade bug will bite me again someday and I might get it, the PC+ sounds great but I was not as overwhelmed as I thought I would be, I use to have a cerwin vega LW-12 and for $250 that thing shook the house thou not quite as clean and not as deep but it sounded Damn good for the money