I recommend using toggle bolts to hold the bracket to the wall since not every whole will necessarily line up with a stud. Nothing like someone's QS8 dropping off the wall due to someone just screwing into drywall...
2-M60s, VP180, 8-M3s, SVS 20-39PCi, DIY Sub, 8-Shakers, JVC RS45, Anthem MRX-1120