No kidding. I saw some article about some guy's system and he was running 2 PB12-Plus / 4.............9 feet apart from each other. True story...........the guy was reporting drywall cracks on the wall beind the 2 subs. I just don't know if I could ever spend almost $9000.00 on 2 subs, amps etc!!!!!

Can you imagine running to SS's? That would be something else. My PC-Ultra can shake all 1500sqf of my house now. 2 of those SS's would break stuff for sure!