Depends which way you are firing them. They should all have a keyhole on the back, the Polks I have do. The nice thing about those infinities is that they have the port on the front so they can be right on a wall (or a joist in your case) whereas the Polks sit about an inch out from the wall. But if you're pointing them perpendicular to the joists you can throw a screw in the joist and hang them like a picture. If it's parallel you'd need to add a board between them. If you want to fire them down or angle them that might be hard to do without putting eye screws or something into the cabinet, but at 100 bucks I doubt that will be a big deal. You could always fill them in later, it's not like black vinyl is difficult to match.