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BLH/TL Build for Dayton RS100-4
BLH/TL Build for Dayton RS100-4
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Old 13th December 2013, 01:18 PM   #21
Bob Brines is offline Bob Brines  United States
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Ah! Beadboard! I go through a lot of this stuff used as packing material. Two 1" layers of beadboard has proven bulletproof for shipping speakers through FedEx. I have often considers using 1" beadboard clad with 5mm plywood. Maybe I'll actually do it.

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Old 13th December 2013, 01:21 PM   #22
xrk971 is online now xrk971  United States
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BLH/TL Build for Dayton RS100-4
XPS is expanded polystyrene and is different than beadboard - stronger and more resilient. Breadboard would require a stiff facer like thin ply.
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Old 13th December 2013, 01:27 PM   #23
Harderror is offline Harderror  United States
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Time for a cutsheet. I apologize for any errors but I think it is accurate. I'm starting mine this weekend! Only 15 pieces per side. It will be a really quick build and should be fun! The wood is 4'x8' 3/4" Cabinet Birch. Enjoy!

Tom

Click the image to open in full size.

Last edited by Harderror; 13th December 2013 at 01:36 PM. Reason: updating cutsheet with a couple of dimensions
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Old 13th December 2013, 01:37 PM   #24
Harderror is offline Harderror  United States
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Bob, I love beadboard! SUPER cheap and I can build crates for my artwork to be shipped. Same use as you!

Tom
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Old 13th December 2013, 01:42 PM   #25
Bob Brines is offline Bob Brines  United States
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Right. Blue Dow (even when it's pink). One who uses 1/4 foam core for speaker cabinets suggests that 1" beadboard + 5mm plywood is not stiff enough?

I started out using 3/4" MDF + 1/4" cement board. Reasonably stiff, quite dead. For most of my builds now, I am using 12mm BB with longitudinal stiffeners. Given power under 30w and SPL under 100dB, I find this stiff enough. I just build a pair of subs - 400w, 112dB. For those I used 24mm BB with braces.

I am not sure 1" beadboard + 5mm ply wouldn't be stiff enough. I need to try it to make any real comment. Perhaps 5mm ply + 1/2" beadboard + 5mm ply might be better.

Bob

Last edited by Bob Brines; 13th December 2013 at 01:50 PM.
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Old 13th December 2013, 01:51 PM   #26
Scottmoose is offline Scottmoose  United Kingdom
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The BBC seemed happy enough with properly applied thin-wall designs.
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Old 13th December 2013, 01:57 PM   #27
xrk971 is online now xrk971  United States
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I meant beadboard by itself is not resilient enough - chips and flakes compared to XPS. Faced with thin ply beadboard is awesome stuff I am sure.

Haha, FC is actually only 3/16 in less than 1/4 even.

Last edited by xrk971; 13th December 2013 at 02:01 PM.
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Old 13th December 2013, 02:26 PM   #28
Harderror is offline Harderror  United States
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I will side with Bob. BB is the way to go for final builds. Expensive but as far as I know can't be beat.

Tom
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Old 13th December 2013, 07:41 PM   #29
GM is offline GM  United States
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Oh, it can easily be 'beaten' with metal, Spauldite or similar high voltage dialectric or composite of these plus some other high density woods, clay, stones, but the cost difference isn't worth it IME unless one can easily afford it.

GM
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Old 13th December 2013, 09:09 PM   #30
Harderror is offline Harderror  United States
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Default BLH/TL Build for Dayton RS100-4

GM! You are getting me interested in experimenting with materials of differing densities combined to fight vibrations. Hmm, I may have to try the concrete encased BB covered in lead and hard rubber.

Tom
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