They aren't a perfect fit unfortunately but you can get them to fit safely and securely if you screw in the speaker loosely, tilt the speaker, plug in the cord from the subwoofer, tilt the speaker back, and then screw it in till it's

and they were perfect fit.

First, it was not clear how the speaker fit tight.

A perfect fit for my Polk Audio surround sound speakers

It ended up being the perfect fit behind my couch

Perfect fit and easy to attach.

Great fit for my speakers and easy to mount.

I all ready have see previous note