Hey guys I'm back with a question. So... my QS8's should be here tomorrow. I've been searching for studs in my wall with a stud finder for about an hour and a half now and have found nothing.

I tried on another wall and had no problem locating all of them within minutes. The wall I can't find them on is the wall between my apartment and my neighbors.

I can find all AC wiring with no problems but no studs. The outlets are usually mounted to studs but I can't find anything near them.

The QS8's are listed as 13.5lbs, can I safely use drywall inserts with the included QS wall brackets without worrying about the screws pulling out from the weight of the speakers?