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what’s better, this or mdf?


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jmelton86 
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Posted: March 11, 2008 at 12:48 AM / IP Logged  

https://i209.photobucket.com/albums/bb103/jmelton86/hmm.jpg

I don't know what kind of wood this is (3/4"), but it seems to be more dense than MDF -much more stiff (and heavywhat’s better, this or mdf? -- posted image.). Is it better for sub enclosures?

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jmelton86 
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Posted: March 11, 2008 at 4:43 AM / IP Logged  

Well, it appears to be 'underlayment-grade plywood'. It's supposed to be of higher quality than regular plywood -for use under tile flooring, etc... It's supposed to have less voids (imperfections, air pockets, what have you) in the wood. It appears to be pretty uniform as opposed to regular plywood; meaning that it looks more compressed or compact.

I used this stuff on my last box (only .5cu' though) and none of the screws stripped out or anything during box construction and for mounting the sub, so I think it holds up okay.

I got it for free for my next box, so I'm'a gonna use it. I'll use extra bracing including to double-up the sub baffle -total of 1.5" for mounting the sub. I'll have plenty for bracing, so that's what im going to do.

Thanks for reading! *If you don't think it'll hold up for my single 10" ported enclosure, then please let me know!

http://www.subwoofertools.com/forum/ported-box.asp?Ew=32&Eh=17&Dia=4&Xmax=15&Vd=.15&NumW=1&Vb=1.6&Fb=26.6&Qts=&Vas=&Fs=&CE=0

BTW, that panel cutout calculator rocks!

2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001
doggs88 
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Posted: March 11, 2008 at 8:47 AM / IP Logged  
jmelton86
 
That looks more like press wood or particle board. Better than the plywood no doubt, but I think I'd go with the MDF (medium density fiber-board).  I had the particle board crack up during the summer in my hatchback. Then the subs just pulled it apart. After adding more screws to it and re sealing it a few times, I just gave up on it and switched to the MDF. Have been using it ever since.
 
Oh, and particle board REALLY hates moisture.
I'm 'bout to "P**p My Ride"...
jmelton86 
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Posted: March 11, 2008 at 6:29 PM / IP Logged  

Thanks for replying.

The wood was actually free, so I won't complain. I will be spraying it with rubberized undercoating to keep out moisture. I actually am currently using a box made out of this and it holds up well with my BostonG5 getting 500watts. This sub is heavy and it's only mounted to a 3/4" baffle without ripping out any screws so I believe when I double-up the baffle board to 1.5" it'll be just fine.

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DDX470HD GTO14001 GTO1014D (x3)
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sedate 
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Posted: March 15, 2008 at 7:31 AM / IP Logged  

I made a box for a 12 for a friend out of particle board - I painted it with about 2oz of fiberglass resin inside and primed/painted it black for the guy.

It's been going strong for like 8 years.

"I'm finished!" - Daniel Plainview
doggs88 
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Posted: April 02, 2008 at 9:16 PM / IP Logged  

Here's my MDF project finished and carpeted.

what’s better, this or mdf? -- posted image.

Three Pioneer IMPP's; Two Jensen 600's (800 RMSea.); and One MTX (360 RMS)

I'm 'bout to "P**p My Ride"...
tegteg54 
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Posted: April 15, 2008 at 11:48 AM / IP Logged  
Looks like particle board to me... MDF is going to be better..
Melted Fabric 
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Posted: April 15, 2008 at 12:18 PM / IP Logged  
Yea, considering it is free, the only thing that can be lost is time. I prefer the physical attributes of MDF, but if you came across free materials that are somewhat equivalent to MDF and you properly construct the box to withstand the pressure and power of your subwoofer(s), I think you will be alright, nonetheless, post the finished pictures when you are able to.
Good luck, and I look forward to seeing it.
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When you do not know what you are doing and what you are doing is the best -- that is inspiration.
tegteg54 
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Posted: April 15, 2008 at 12:26 PM / IP Logged  
My view is this.. "You can only polish a turd so much, and in the end you still my friend, have a turd"... Get 25 bucks together for some MDF for..
capamonkeyboy 
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Posted: April 15, 2008 at 3:32 PM / IP Logged  
Knock on the wood with your knuckle, if you like the sound, go with it. I use MDF myself and love it, but to each their own. If you can make sure it will glue well and seal, you should be fine. I don't even bother with screws anymore, I use Elemers wood glue and finish nails right away, I have never had any of the 25 or so boxes I have built come apart even under the most extreme conditions (this includes being dropped more than once). Have fun building it!
The best security is to not have anything to steal, but then again your car would be pretty boring.
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