what do you think about mounting the BT15 center mount to drywall using "wall anchors", the kind of screw that has a housing that spreads out behind the drywall, thus holding it from behind....

The anchors are damn solid.  My only worry is, would the 22lbs of the 5C bow out the drywall?

There's a stud directly in the middle of the two.  I wish the B15 had a bar connecting the two, then i'd simply add a screw in the middle into the stud...

My other thought was to mount a piece of 1/4" thick plywood and mount the B15 mounts to that... 

---

5.1: 4x5B 1x5C 1x10D

What finish on the speakers?  If cherry then you could get a piece of 1X hardwood long enough to span 3 studs, the one in the middle and then the 2 on the end, stain it to match the cherry finish.  that would definitely hold.

Cheers

---

Russ

Joined you!

I think you're worried about the wrong problem.  You shouldn't see the drywall bow at all with an anchor/speaker. 

An anchor should be able to hold your speaker on drywall - if you use the right anchor.  Don't use one of those cheap plastic sleeve anchors.  The pullout force on most of those is only 15 pounds and will hold up to 40 pounds. 

You want to use toggle bolt anchors. That's the type that goes into the hole and the anchor "springs" out.  The information on the package will tell you the rated strength of the anchor but you want to be safe; I'd use at least a 50 pound anchor with a 22 pound speaker or more if you don't mind the hole.  Since you're probably going to put 2 screws in the mount don't add the rating of the anchors together.

The only problems with a toggle bolt anchor are that 1. you have to drill a larger hole so you can get the toggles in the wall so until you tighten everything up it wobbles in the larger hole and 2. if you ever want to relocate the mount you have to buy new anchors; once you unscrew it the toggle is going to be lost forever inside your wall.

Enjoy!

---

Joe
If you can't have fun doing it, it's probably not worth doing.

We have a 5C sitting on a BT15 here that is not on a stud but is sitting in the drywall using wall anchors.  There is that one review where someone used the wall anchors and the BT15 ripped out of the wall, but that is the only time I have heard of that happening so I tend to think that there was some type of user error.  Still the toggle bolts that Joe mentioned are probably a good idea as they can hold more wieght. 

---

Jason Hicks
Aperion Audio Guru

wall anchors differ wildly.   The big corkscrew kind that screws into the drywall, I think would be fine.  Then there's many kinds of plastic anchors, some are more "spiney" than others, and I am betting this is what that person used that had the crash, as these i've found can be the weakest type of anchor to use.  also have to be careful when drilling the hole, not to make it too large with the plastic spiney kind.

 

I ended up using toggles, but they weren't in a package so I don't know the weight rating.   I think the weak point is the little nut inside the toggle can be thin and bend/warp with too much weight ...   with this thought, you should use large toggles (which is kinda annoying to make such a large hole in the wall), or use something that really connects with the wall such as those corkscrews or the things that spread out behind the wall that I linked to in my original question above...     Those two (corkscrew & spreaders) I think are better than using toggles that are too small since those could fail pretty easily if they bend...

 
anyway, like I said, I'm using toggles, but I don't feel confident in them.   I may switch to something else, or bigger toggles...    otherwise, it's good so far, it's not like we're hanging or jumping on this speaker. haha. :)       and i have insurance as there's a mantle directly under the brackets (I used the brackets since I didn't trust the mantle)..

---

5.1: 4x5B 1x5C 1x10D