Using 2 sheets mdf for small sub box

LONG TIME BUYER
LONG TIME BUYER Posts: 112
edited May 2014 in Custom Fabrication
Will be making a new sub box for a 8 inch mm840 polk audio subwoofer. The size box 0.35 cu ft,which polk audio states. If i made it using 2 sheets 3/4 mdf board,would it distort the sound or would it be more detailed?. Would love to hear answers back.
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  • LONG TIME BUYER
    LONG TIME BUYER Posts: 112
    edited November 2011
    Nothing yet
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  • decal
    decal Posts: 3,205
    edited November 2011
    I don't really understand what you are asking, can you be a dit clearer?
    Why would you need 2 sheets of mdf to make a .35ft3 box?
    If you can't hear a difference, don't waste your money.
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  • LONG TIME BUYER
    LONG TIME BUYER Posts: 112
    edited November 2011
    I made my sub box a hair to small, if i put 1 more sheet of mdf on 3 sides,it will fit perfect,and it will be easy to do. So today i did it and smoothed it all out.you would never know. At this point my subwoofer has not got here yet. Ordered it. So now did i change the sound of the box? I guess when the sub gets here i will find out.
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  • Vital
    Vital Posts: 747
    edited November 2011
    hhhmmmm...okk....
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  • nguyendot
    nguyendot Posts: 3,594
    edited November 2011
    Not sure what you're asking man. Please choose your words carefully and clarify what you are asking.
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  • LONG TIME BUYER
    LONG TIME BUYER Posts: 112
    edited December 2011
    Very simple. If you read it. If you doubled the box with 2 layers of mdf board what would it sound like? Too simple. I can answer it myself now i already build it. It sounds more tighter and detailed than my other box. I wasnt sure if it would,and i was thinking that someone out there might have tryed this before i did it. Thanks anyway.
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  • tommyt21
    tommyt21 Posts: 685
    edited December 2011
    LONG TIME BUYER wrote: »
    Very simple. If you read it. If you doubled the box with 2 layers of mdf board what would it sound like? Too simple. I can answer it myself now i already build it. It sounds more tighter and detailed than my other box. I wasnt sure if it would,and i was thinking that someone out there might have tryed this before i did it. Thanks anyway.

    I'm glad your subwoofer sounds better in the new box. I think the confusion came in your original post. If you had phrased it as, I plan on doubling the thickness of the subwoofer enclosure by using double layers of MDF. You may have gotten the appropriate responses you were looking for.
    Have a good one dude
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  • 20hz
    20hz Posts: 636
    edited January 2013
    it threw me off too , I read two sheets I was thinking of standard 4x8' sheets , not just building it double wall .
    I am surprised that small a box benifitted from a 1.5 vs .75 wall , I would figure if it helped it it would be more detailed
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  • Anthony Hinton
    Anthony Hinton Posts: 107
    edited February 2013
    doubling the wall thickness should stiffen the box, no negative effects.
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  • kick
    kick Posts: 10
    edited September 2013
    The thicker the better is the answer
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  • 20hz
    20hz Posts: 636
    edited October 2013
    I cant see a 8" being effected , I put a brace every six inches
    IMHO internall braces are easier and more effective than double walls
    A kick said thicker is always better
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  • Eocuph
    Eocuph Posts: 75
    edited October 2013
    With an enclosure that small, its a waste of mdf to add a second layer all around. You should hear any difference. If you are worried that the internal dimensions are too small, you can add some poly fill inside the enclosure.
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  • 20hz
    20hz Posts: 636
    edited May 2014
    thats crazy .35 cu is to small for any positive gains of a dual wall !
    Dual wall is just for rigidity my rule is a brace every 6 inches , if you dont the cabinet will make noise .
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