box for 15" diamond audio sub

Printed From: the12volt.com
Forum Name: Fiberglass, Fabrication, and Interiors
Forum Discription: Fiberglass Kick Panels, Subwoofer Enclosures, Plexiglas, Fabrics, Materials, Finishes, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=120759
Printed Date: April 27, 2024 at 11:37 PM

Topic: box for 15" diamond audio sub

Posted By: diamondaudioguy
Subject: box for 15" diamond audio sub
Date Posted: March 16, 2010 at 2:32 PM

I'm going to build a box tonight for my 15" diamond audio sub.what should I use mdf or plywood I'm making out of 3/4 whatever I use.

Replies:

Posted By: j.reed
Date Posted: March 16, 2010 at 9:13 PM

A high quality birch or oak ply would be the plywood of choice. You dont want knots. MDF would be much cheaper and just as strong. I always use MDF unless it is going to be stained for a wood look. Make sure to glue your seemes and joints. Elmers wood glue is good. I like f-26 or liquid nail. Others here like gorilla glue. Use a little extra or some caulk on the inside seams to ensure it is air tight and remember bracing is your friend. A strong enclosure is a happy enclosure.

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Posted By: jeremytravis
Date Posted: March 20, 2010 at 1:59 AM

Birch ply is twice as stiff as MDF, if two identically sized sub boxes were fabricated, one from 3/4in MDF and the other from 3/4in birch ply, the MDF box would flex twice as much as the birch ply box.

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**ADVANCED MECP CERTIFIED

Posted By: j.reed
Date Posted: March 20, 2010 at 12:24 PM

Not with the way i brace. My enclosures don't flex :). Yes birch is a bit stiffer, but also WAY more expensive. I can double layer 3/4 MDF for the price or less then the price of birch, then add bracing on top of that and its a no brainer, if covering it stick to MDF.

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Posted By: diamondaudioguy
Date Posted: March 20, 2010 at 9:49 PM

Thank you all for ur advice.I went to my local lumberyard to get a sheet of mdf but was told they did not carry mdf that he only carried high density so that's what I got and guys to my surprise the box turned out great and we put a db meter inside ny jeep and the highest it hit was 146 my Windows look like they are flexing out a 1/2 when it hits.but I missed one piece of advice from Mr reed.BRACING lol didn't put any in it so I'm going to build another one and do it right this time.how do I post pics on here from my smartphone,I want u guys to see it and tell me what I could do better.

Posted By: j.reed
Date Posted: March 21, 2010 at 1:45 AM

High density is even better than MDF(medium density fiber board) Just more expensive. What size enclosure did you go with?

As for posting pics from a smartphone i have no idea. I always upload to my photobucket account.

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Posted By: diamondaudioguy
Date Posted: March 21, 2010 at 2:35 AM

Here are the dimensions reed. Width-22" height21.5"length 17.5"deep the. Vent walls 3x16x39 fb-36hz. F3-30hz and reed is. There anyway u can show me a good pic of bracing inside the box so I can see how it should be?also when I build the next one I'm thinking of making every piece 1" longer.here are the pics of the box before I cut the baffle out.what do u guys think? It's my first one. https://i1015.photobucket.com/albums/af280/diamondaudioguy33/d185d5ae.jpg

Posted By: diamondaudioguy
Date Posted: March 21, 2010 at 2:44 AM

Posted By: j.reed
Date Posted: March 21, 2010 at 3:05 PM

This is a bit over kill. But you will get the idea. posted_image

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Posted By: diamondaudioguy
Date Posted: March 21, 2010 at 4:22 PM

Dam that's crazy lol

Posted By: diamondaudioguy
Date Posted: March 21, 2010 at 4:26 PM

don't mind the jeep haven't cleaned het yet :)

Posted By: ianarian
Date Posted: March 21, 2010 at 4:59 PM

DAT can provide you with idiot proof directions to building one of their recommended enclosures. I recommend their designs if your NOT using the entry level sub... The dimensions are provided, all you have to do is cut and build.

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This is what I do for FUN!

Posted By: diamondaudioguy
Date Posted: March 21, 2010 at 8:42 PM

Can u explain Wat DAT is? Where do I find this at I would like to look at their designs.