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Theater 4 Pi Driver Screws [message #41925]

Tue, 15 July 2003 03:20

elektratig
Messages: 348
Registered: May 2009

Grand Master

I'm getting close enough that I was thinking about how to attach the drivers to the front baffle. No. 8 screws look about right for the tweeter horn, but the attachment holes on the LF driver are LARGE. Looks like No. 10 or even 1/4 -- I didn't get a chance to measure. What size screws has everyone used on the LF?

I'm also thinking about threaded inserts plus machine screws, so I don't weaken the MDF if I need to take the drivers in and out (don't plan to!). Any downside?

Thanks.

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Re: Theater 4 Pi Driver Screws [message #41926 is a reply to message #41925]

Tue, 15 July 2003 04:51

Larry Acklin
Messages: 54
Registered: May 2009

Baron

I use 1/4 inch hex head bolts with t-nuts. I mix some jb-weld and use it to seat the t-nut, and to "seal" around the outside of the t-nut flange. I draw the t-nut in using a bolt and washer (no hammering). This works well for me on the PA cabinets. I mount the driver with the 1/4 inch bolts and a washer under the head.

Larry Acklin

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Re: Theater 4 Pi Driver Screws [message #41927 is a reply to message #41925]

Tue, 15 July 2003 05:06

Matts
Messages: 359
Registered: May 2009

Grand Master

I've used the inserts and they work well. I got some brass ones that have wood thread on the outside, machine thread on the inside, and are slotted on the outside edge so you use a screwdriver to put them in. got some black hex-head screws with a narrower head that fit into the channel around the driver for clean look.

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Re: Theater 4 Pi Driver Screws [message #41931 is a reply to message #41925]

Tue, 15 July 2003 09:27

Wayne Parham
Messages: 18792
Registered: January 2001

Illuminati (33rd Degree)

I like using T-Nuts for mounting the heavy stuff and self-tapping screws for lighter duty. And when I say "lighter duty," that includes most of the drivers that weigh less than about 25 pounds. The biggest advantage to T-Nuts over pans screws is that they won't weaken or strip over time with repeated assembly and disassembly. If you aren't much of a "tweaker" and don't plan to go inside them often, then the self-tapping pan screws will be just fine.

Also, there's a link to a big online fasterner distributor in the post called "Black pan screws for mounting small drivers." If you can't find what you want at the local hardware store, this place will certainly have what you need.

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