#1650667 - 12/16/04 07:09 AM
MDF instead of Plywood?
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Kamran
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Registered: 12/16/04
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Dear Ethan,
I'm new to this forum and very interested in your basstrap idea.
Now I have a question:
Is it possible to use MDF instead of Plywood in the basstrap?
Best Regards
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#1650668 - 12/16/04 02:59 PM
Re: MDF instead of Plywood?
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Ethan Winer
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Loc: New Milford, CT, USA
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Kamran,
> Is it possible to use MDF instead of Plywood in the basstrap? <
Maybe, but I never tried that so I can't say for sure. My fear is the MDF might be too resonant because it's not made from glued layers that go in different directions like plywood. So my best advice is to build them exactly as shown. That way you know they'll work.
--Ethan
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#1650669 - 12/17/04 06:12 AM
Re: MDF instead of Plywood?
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Kamran
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Thanks for your reply.
What do you mean by too resonant? Causing change in Frequency Absorbtion or Efficiency of Basstrap?
Best regards
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#1650670 - 12/17/04 03:22 PM
Re: MDF instead of Plywood?
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Ethan Winer
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Kam,
> What do you mean by too resonant? <
My guess is that plywood tends to resonate less at a single frequency than a solid and more uniform board like MDF or Masonite. For example, cellos made of plywood have poor tone compared to those made from "real" wood because the plywood does not resonate as well. In a cello that's bad, but in a wood panel trap that's an advantage.
--Ethan
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#1758564 - 05/29/07 12:59 AM
Re: MDF instead of Plywood?
[Re: Ethan Winer]
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Alejo
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Registered: 03/19/07
Posts: 33
Loc: Mendoza Argentina Sud America
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Kamran,
> Is it possible to use MDF instead of Plywood in the basstrap? <
. So my best advice is to build them exactly as shown. That way you know they'll work.
--Ethan
Dear ethan
here ( argentina) i can not get 1/4inch (0.6 cm) plywood,
0.9 cm (1/3 inch more or less)is the thick I an get for low bass trap.
so what do I do?for getting the same resonant frecuency
Should I reduce the panel deep? ? wont it change the absortion coeficient?What if l paste two 1/8 inch panels?
thanks
Edited by Alejo (05/29/07 01:06 AM)
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#1758730 - 05/29/07 12:07 PM
Re: MDF instead of Plywood?
[Re: Alejo]
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Ethan Winer
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Yes, you can glue two 1/8 inch pieces together. But glue them everywhere on their entire surfaces, not just in a few places.
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#1875729 - 01/19/08 04:18 AM
Re: MDF instead of Plywood?
[Re: Ethan Winer]
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Alejo
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Kamran,
My fear is the MDF might be too resonant because it's not made from glued layers that go in different directions like plywood. So my best advice is to build them exactly as shown. That way you know they'll work.
--Ethan
Hello ethan that is post dated from 2004,
Since 2004 to 2008 do you know of some one who had built particle board, mdf or osb bass traps'?
Do you know how they work? What alternative option is the best ?
Thanks(sorry about my english)
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#1876073 - 01/19/08 07:40 PM
Re: MDF instead of Plywood?
[Re: Alejo]
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Griffinator
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MDF and particle board are still bad choices for the same reasons as that original post.
A board made of glue and sawdust (MDF/particle) is going to have a consistent resonance at certain frequencies, which is very, very bad when building traps.
_________________________
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#1876098 - 01/19/08 09:11 PM
Re: MDF instead of Plywood?
[Re: Griffinator]
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Bill@Welcome Home Studios
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I used MDF for precicely the reasons stated... it is glue and junk and all sorts of mean and nasty things and is heavier than plywood and has a lower resonance than a comparable thickness of plywood. If there are any bad resonances, they are not apparent in my room. It was harder and dirtier to cut, but leaves a cleaner edge. It is dimensionally more stable than plywood, and has no voids.
Bill
_________________________
"...it's easier than hitting the kids, and almost as much fun..."
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#1876637 - 01/20/08 07:16 PM
Re: MDF instead of Plywood?
[Re: Griffinator]
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Alejo
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Thanks!
This is the reason why I ask, the next was taken from other post.
[i](http://forums.musicplayer.com/ubbthreads.php?
ubb=showflat&Board=24&Number=1745926&Searchpage=1&Main=125840
&Words=&topic=0&Search=true#Post1745926)
#1785703 - 23/07/07 04:29 PM Re: Bass traps Control Room vs Studio [Re: Alejo]
Ethan Winer Ethan Winer Moderator
MP Hall of Fame Member
MDF or particle board will work. Somewhere in the READ THIS FIRST post is a link to the formula that will tell you how thick it needs to be to be equivalent to plywood.
--Ethan
in my country i can not get 1/4inch plywood, so i´m looking for best choice.
_______________________
Edited by Alejo (01/21/08 06:45 AM)
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#1894036 - 02/18/08 07:01 PM
Re: MDF instead of Plywood?
[Re: Ethan Winer]
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Alejo
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Registered: 03/19/07
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Loc: Mendoza Argentina Sud America
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Hello Ethan I´m not shure were to send you this message but I´ll try thru this post.Just I´d ask you to take a look at this
http://www.johnlsayers.com/phpBB2/viewtopic.php?p=72790#72790
Could you please give me an opinion?
Thanks!!!
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#1894232 - 02/19/08 08:08 AM
Re: MDF instead of Plywood?
[Re: Alejo]
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Ethan Winer
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Opinion on what?
Note that most of the same people go to all the acoustic forums, and I see Glenn has already given you his stamp of approval.
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#1894459 - 02/19/08 01:46 PM
Re: MDF instead of Plywood?
[Re: Ethan Winer]
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Alejo
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Registered: 03/19/07
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Yes I ´ve just read that,but as You are expert about yours traps I just thought you could have some more useful opinion to share.
If you say that´s not necessary that´s ok for me.
My apologies if I´m awkward to express myself.
Thanks!!
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#1894788 - 02/20/08 07:14 AM
Re: MDF instead of Plywood?
[Re: Alejo]
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Ethan Winer
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Loc: New Milford, CT, USA
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I don't know much about slot resonators, so it's difficult for me to comment on plans that use them. That's why I'm more comfortable saying that you're in good hands with Glenn. 
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Moderator: Ethan Winer
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