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Old 03-24-2015, 12:01 PM
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Default Best fastener for mounting sub

This is the first time I've had a sub this huge. It's also the first time I've had one without the holes in the surround for the screws or bolts. From what I've read I just carefully poke a small hole in the surround with a scribe prior to inserting the fastener. But what have you guys had the most success with in mounting heavy subs (12" Ethos in my situation)? I've read a lot of people suggest t nuts with socket head cap screws and was thinking that looks pretty sturdy. If that's a good choice what size head does it need to have good coverage of the opening? My box has a double baffle of 3/4 mdf with no flush mount due to depth limitations so I'm guessing I need a 2" length....or is a 1.5" better since the t nut is recessed into the board? And if there's a better option than t nuts and bolts....what is it? Thanks!
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Old 03-24-2015, 12:15 PM
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A screw
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Old 03-24-2015, 12:20 PM
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Quote:
Originally Posted by EddieC View Post
This is the first time I've had a sub this huge. It's also the first time I've had one without the holes in the surround for the screws or bolts. From what I've read I just carefully poke a small hole in the surround with a scribe prior to inserting the fastener. But what have you guys had the most success with in mounting heavy subs (12" Ethos in my situation)? I've read a lot of people suggest t nuts with socket head cap screws and was thinking that looks pretty sturdy. If that's a good choice what size head does it need to have good coverage of the opening? My box has a double baffle of 3/4 mdf with no flush mount due to depth limitations so I'm guessing I need a 2" length....or is a 1.5" better since the t nut is recessed into the board? And if there's a better option than t nuts and bolts....what is it? Thanks!
nailed it. so you really want to punch holes in a sub's surround?

use a good course thread wood screw and angle it outward from the center. yeah you can use t-nuts but you'll quickly learn those are easier to say to use than actually using.
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Old 03-24-2015, 12:20 PM
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epoxy? /sarcasm
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Old 03-24-2015, 12:26 PM
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Old 03-24-2015, 12:28 PM
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Wood screws. Not drywall. Im with the above. I only use t nuts for access panels. Where i can drill through both pieces at on once for accuracy. But for mounting a sub i think its a bit of a waste of time. Id probably use a type of coarse screw in type moly before a tnut. At least then u have a studs to hang the bitch on while u run the nuts on em!
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Old 03-24-2015, 12:30 PM
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Spax screws
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Old 03-24-2015, 12:48 PM
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Just bought a bunch of the spax screws. Have the little spade starter on the screw and some aggressive threads that cut as they go in. Nasty lookin!
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Old 03-24-2015, 01:04 PM
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Quote:
Originally Posted by fasfocus00 View Post
nailed it. so you really want to punch holes in a sub's surround?

use a good course thread wood screw and angle it outward from the center. yeah you can use t-nuts but you'll quickly learn those are easier to say to use than actually using.
No I don't! When I first saw it I thought that the surround must have been turned to a point where the holes weren't lined up. Then I read that a lot of the beefier subs come like this. To tell you the truth the thought of having to make the hole makes me cringe a little as I surely don't want to screw it up....literally. So when you say nailed it, is that literally what you did and the best way to do this?

Those spax screws seem to be pretty popular as well. Is there a particular size that works best for this application? I'm guessing holes need to be predrilled as well with these? I'm no carpenter but I can follow directions pretty good. Everything I've read on box building says that any hole needs to be predrilled in mdf to keep it from cracking. But does that only apply when drilling the holes on the edges (into the length of the board) or the face as well?
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Old 03-24-2015, 01:28 PM
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I use threaded inserts and machine screws with a security head. Something other than flat head or Phillips. Something not every thief will carry in their back pocket.
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