Crutchfield Customer Review (What's this?)
I purchased a pair of these to mount my DT ProMonitor 1000s to my living room wall. Those speakers are pretty heavy (around 7 lbs.) and these mounts are the only good way to mount them. They are rather expensive for what you get, and on the ProMonitor 1000s you really have to tighten the screw to get the speaker to stay in place without "drifting". Some of the other reviewers have mentioned this, and it's definitely an issue for the heavier speakers. You will definitely need to either mount to a stud or use drywall anchors with heavy screws to do the job.
Pros: Looks good; Designed to match DT speakers; Unobtrusive; Easy to install (with reservations)
Cons: Expensive; Ball and socket design just barely adequate for heavier speakers; No included heavy screws for mounting