How Thick is Thick Enough? [message #29126] |
Mon, 28 June 2004 14:58 |
GarMan
Messages: 960 Registered: May 2009
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Illuminati (2nd Degree) |
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Hi Everyone. I want to get some feedback on what's considered acceptable stock for a 5 cubic foot box (20x20x20). I used 1" MDF for the 2PI Towers last year and think that was overkill. However, I've seen guys double up on 3/4" MDF for all six sides for a total of 1.5". I'm looking to build the box for a JBL 2235 and running it down to 35Hz. Will 3/4" MFD be fine? If given a choice between thick walls with little bracing, or thinner walls with more agressive bracing, which would be better? thanks, Gar.
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Re: How Thick is Thick Enough? [message #29128 is a reply to message #29126] |
Tue, 29 June 2004 04:42 |
elektratig
Messages: 348 Registered: May 2009
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Grand Master |
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Gar, When I've built sub boxes about that size, I've used 3/4" MDF, internal bracing and doubled up the baffle holding the driver. I'm not sure the last was acoustically necessary, assuming lots of bracing. It was more that, if the driver is inset into the baffle (which it was), you wind up having the driver screwed to not much MDF behind it unless you double up. It's hard enough moving the #$%^$ things with one side doubled up. I can't imagine doubling up all six sides. Nor have I ever used MDF stock thicker than 3/4". e
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Re: How Thick is Thick Enough? [message #29129 is a reply to message #29128] |
Tue, 29 June 2004 07:22 |
GarMan
Messages: 960 Registered: May 2009
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Illuminati (2nd Degree) |
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You should try moving my 2PI Towers, built with 1" MDF all around! I'm thinking 3/4" with good window bracing is all I need. Good point about the front panel. Once you cut for a flush mount, there's not much left to secure the driver. I was surfing last night and saw some examples of extreme DIY cabinets. One guy built his speaker with three layers of 1/2" MDF. The middle layer was more of a spacer to allow him to fill the core with sand. thanks, Gar.
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Re: One half inch. [message #29134 is a reply to message #29133] |
Tue, 29 June 2004 15:14 |
GarMan
Messages: 960 Registered: May 2009
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Illuminati (2nd Degree) |
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Guess that answers my question about thick panels with minimum bracing vs thin panels with lots of bracing. Thanks.
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Re: One half inch. [message #29142 is a reply to message #29140] |
Wed, 30 June 2004 22:54 |
Bill Martinelli
Messages: 677 Registered: May 2009
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Illuminati (1st Degree) |
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Good point. and, the dribble that acompanies the use of "heavy, bigger, better" materials in place of workmanship is a never ending road of pure fiction.
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