Originally Posted by pbc
Yeah, just to mount the driver to the baffle. So you're recco'ing no insert/anchor?
What size hex socket heads do I use for the AV15's anyhow?
I don't think the benefits of using a t-nut or barbed insert is worth the potential hassle. I have used them with success in the past but have had problems too. I had one strip on me but luckily is was in a PR box so I could remove the PR and grab the t-nut with a vise grip to free it.
Ply's are a lot more screw friendly than MDF, you will just want to pre-drill the hole. Even in MDF I would rather use screws unless it is a test box and I plan on mounting and removing numerous drivers.
There are a lot of times when t-nuts make a lot of sense but in your case I would pass.
With t-nuts you have to make sure you drill the hole straight, It is best to use a drill press.
As far as size it depends on your mounting holes, I would imagine the AE drivers are standard for a 15". You should be able to use a #8 1" to 1 1/8" long. I have some of these
which I like for heavier drivers but I normally use size 8.