1" pine boards for subwoofer enclosure - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 14th January 2013, 03:30 PM   #1
diyAudio Member
 
Join Date: May 2010
Default 1" pine boards for subwoofer enclosure

Hi all,

Was just wondering if anyone had experience or opinions on using 1" thick pine boards for building a subwoofer enclosure. 3/4 plywood and mdf are readily available in my area (and I know are generally recommended), but I've seen some 1" think pine boards for a good price which I could use making a minimal amount of cuts. This is going to be a small 4th order bandbass at ~12x12x24". Assuming proper bracing is used, what are peoples thoughts?

Thanks,
caleb
  Reply With Quote
Old 14th January 2013, 04:24 PM   #2
diyAudio Member
 
Inductor's Avatar
 
Join Date: Feb 2006
Location: Cascais
Do you mean Solid Pine Floor Boards?!
15 inch wide like this?
Attached Images
File Type: jpg 15-inch-wide-boards_58878_1.jpg (45.4 KB, 135 views)
  Reply With Quote
Old 14th January 2013, 04:55 PM   #3
diyAudio Member
 
Join Date: May 2010
Quote:
Originally Posted by Inductor View Post
Do you mean Solid Pine Floor Boards?!
15 inch wide like this?
Yes, solid wood boards as opposed to laminate.
  Reply With Quote
Old 14th January 2013, 05:34 PM   #4
diyAudio Member
 
Join Date: Feb 2011
Location: Colorado, USA
Not a good idea, IMO for two reasons: Solid wood tends to warp, and pine is a softwood and not very dense. Now a solid bubinga sub wood be cool...
  Reply With Quote
Old 14th January 2013, 06:13 PM   #5
diyAudio Member
 
Inductor's Avatar
 
Join Date: Feb 2006
Location: Cascais
If they are really dry (old/recycled) and they don't have wood knots (very important), it can work. I have speakers (60L) made of solid pine. In the long run it's said to warp. Make the baffles - front and rear - of plywood (screwed not glued). Different materials tend to move differently making the wood to crack when it's glued.
  Reply With Quote
Old 14th January 2013, 09:39 PM   #6
tvrgeek is offline tvrgeek  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Md
Glue is completely sufficient if you know what you are doing. It should be stronger than the wood. That said, I much prefer plywood for sub boxes. My main ones are a plywood/ceramic plate lamination. Very very rigid.
  Reply With Quote
Old 14th January 2013, 10:28 PM   #7
diyAudio Member
 
Rullknufs's Avatar
 
Join Date: Mar 2010
Location: Sweden
Send a message via Skype™ to Rullknufs
Quote:
Originally Posted by Inductor View Post
and they don't have wood knots (very important)
I'm just a little curios, why is this so very important? Is it because they are really hard or is it for some other, to me unknown, reason?
__________________
My audio and DIY blog: http://phimusic.blogspot.se/
  Reply With Quote
Old 14th January 2013, 10:44 PM   #8
GM is offline GM  United States
diyAudio Member
 
GM's Avatar
 
Join Date: Jun 2003
Location: Chamblee, Ga.
Depends on the type of pine and whether it's dried out. The Southern Yellow Pine I've used is so hard once dried out it dulls cheap drill bits and requires pilot holes to drive nails in, so never had a problem with all the cabs I built for others way back when for as long as they kept them.

The downside is that it's hard finding any really straight ones as they tend to warp once pulled free from whatever they were attached to, so ideally you want to get some that's been lying around loose for awhile to choose from if you don't have a power planer.

The softer pines need considerable bracing when used for 'sub' duty, so considering your cab size, the easiest way is to double up the panels if that's what is available and of course, as already noted, no knots or any signs of splitting.

GM
__________________
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
  Reply With Quote
Old 14th January 2013, 11:01 PM   #9
GM is offline GM  United States
diyAudio Member
 
GM's Avatar
 
Join Date: Jun 2003
Location: Chamblee, Ga.
Quote:
Originally Posted by Rullknufs View Post
I'm just a little curios, why is this so very important? Is it because they are really hard or is it for some other, to me unknown, reason?
Knots tend to come loose and vibrate and/or create a leak as they dry out in the pines I've used. Recently, I had to replace some of my home's ~35 yr old pine fascia boards due to knots finally popping loose.

Of course one can deal knots if desired. A pair of MLTL cabs made from ~175 yr old barn siding that once planed flat were so striking, knots included, that I flowed super glue into the joints on the outside and fiberglass-ed over them on the inside. ~12 yrs later they are still so rigid, 'tight' that they sound almost metallic when tapped with a hammer down near the bottom where there's no damping.

GM
__________________
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
  Reply With Quote
Old 14th January 2013, 11:47 PM   #10
diyAudio Member
 
Join Date: May 2010
Thanks for the input everyone. I may just stick with more conventional materials for the moment.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: Bassworx 10" Ported Subwoofer Enclosure/Box greenmark59 Swap Meet 1 3rd October 2011 06:41 PM
8" Subwoofer Enclosure Part 2 (with thiele-small now) hernanstafe Subwoofers 10 7th February 2007 02:45 AM
open baffle subwoofer "enclosure" dimensions noodle_snacks Multi-Way 4 18th July 2006 06:51 AM
8" Venom Subwoofer Enclosure mangrovejack Subwoofers 14 17th May 2005 11:38 AM
My 2nd Q: 10" subwoofer enclosure kingfootga Subwoofers 4 27th March 2002 10:23 PM


New To Site? Need Help?

All times are GMT. The time now is 08:34 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2