1/2” birch ply sufficient for box build?


West1

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3/4 birch is ideal and MDF is the weaker of the two.
I’m curious is 1/2” 5-6 ply birch would be the in between of the two.

I need to build a 2.25cu box for a FI Xv3 12 and I could use the extra 1/2” space.

what’s your take on it, ty
 

hispls

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I don't think meme plywood is going to make a significant difference. 1/2" anything may be inadequate to support modern (heavy) subwoofers even with a good bit of bracing.
 
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West1

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Ok, ty
 

SlugButter

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I’ve made this mistake. Don’t do it. 1/2 inch might be ok for a 200 watt sub, but not with what you have. It will flex that box to pieces In fairly short order, not to mention the loss of bass you will have from having a weak baffle.
 
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1aespinoza

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what’s your take on it, ty
A nephew bought a sub system from a friend of his which I installed for him. I was underwhelmed by it's performance being that I had heard those particular subs on other setups which slammed. A week ago I uninstalled it because rattling issues. Come to find out that the box is 1/2 birch lined with epoxy. That was the issue of the lackluster performance, but not the rattling.
 
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West1

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Thanks guys, 3/4” it is.
 

LsGuy

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What about glass? You could build it of thinner wood and then layer up some glass inside and outside. Its typically pretty rigid, and if just laying it over a box it's not much more difficult than painting.
 

hispls

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What about glass? You could build it of thinner wood and then layer up some glass inside and outside. Its typically pretty rigid, and if just laying it over a box it's not much more difficult than painting.
So drop over a hundred bucks into throwaway brushes, pots, resin, acetone, rubber gloves, a respirator, and composite mat to save 10$ buying cheaper lumber? AND then hope that actually provides enough strength?
 
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LsGuy

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So drop over a hundred bucks into throwaway brushes, pots, resin, acetone, rubber gloves, a respirator, and composite mat to save 10$ buying cheaper lumber? AND then hope that actually provides enough strength?
Yeah, if that means the difference in making volume spec why not?
 

Louisiana_CRX

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1/2 will flex bad ...
 

West1

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How good is the 3/4” birch from Lowe’s/HD? The guts look different vs. solid birch. Kind of like glued 5 layers with the exterior 1/16 of real birch.

basically 110.00 vs. 65.00 4x8 sheet
 

Popwarhomie

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How good is the 3/4” birch from Lowe’s/HD? The guts look different vs. solid birch. Kind of like glued 5 layers with the exterior 1/16 of real birch.

basically 110.00 vs. 65.00 4x8 sheet
It's pine with a thin birch veneer for looks. I have been using 3/4" sanded pine for years and very happy with it.
 
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2RZ-FE

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The 13 ply stuff is the best but you would have to find somewhere that sells it and it’s usually in square sheets. I’m using the Home Depot sanded pine I think it’s 7 ply. They had Baltic Birch I think it was 7 layer also but the quality isn’t like the 13 ply.
 
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West1

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Awesome, thanks guys!
 

ThxOne

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You could always use 1/2"... just put two 1/2" pieces together and BAM!! 1" Baby!!!! Just saying.
 

hispls

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Yeah, if that means the difference in making volume spec why not?
How much volume are you really saving by the time you build up your fiberglass enough to add strength? Do you suppose that would make an audible difference?
65.00 4x8 sheet
Ouch. Lumber has at least doubled this past year across the board. But at least everybody is getting """free""" money to not work.
 

West1

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How much volume are you really saving by the time you build up your fiberglass enough to add strength? Do you suppose that would make an audible difference?

Ouch. Lumber has at least doubled this past year across the board. But at least everybody is getting """free""" money to not work.
not everyone, I sure wish I seen even a cent of the stimulus package lol
 

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