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Reload Thread: Help on box for a 15" going in a '01 Gran Prix

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    n2audio's Avatar
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    Help on box for a 15" going in a '01 Gran Prix

    Hey -
    Stupidly I told my nephew I'd build him a box for his '01 GP.
    Problem is the car's an hour away and I'd like to figure out dims w/o the car.

    Sub is a Diamond D6. Volume will be around 3, maybe 3.5 cf net, or 4.0-4.5 gross.

    Can someone provide me some semi-accurate dims that I will have to work with in this trunk?
    If I can avoid a slanted face I will just build a rectangular box.

    General external dims I have in mind right now are 16.5 x 13.5 x 41.

    Will 41" fit between the trunk lid supports? If not i can probably build it a couple inches deeper to save on length.

    thanks





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    Re: Help on box for a 15" going in a '01 Gran Prix

    aw c'mon!
    Someone has to have a '97-'03 GP, a tape measure, and 5 mins.

    All I really need to know is the max ht and max width I have to work with.

    edit: found an old post saying a 16.5"H x 33"L box wouldn't fit w/o some sheet metal cutting. Hmmm...
    I wonder if the 13.5D and 41"L would have a chance.




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    Re: Help on box for a 15" going in a '01 Gran Prix

    Call a Pontiac dealer and just say you need to know the dimensions so you will know if it can be usable for your "work equipment".

    They'll think there could be a possible sale, they'll hustle on out there. Or just drive down to the dealership with a tape measure.



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    Re: Help on box for a 15" going in a '01 Gran Prix

    it will be difficult to fit a 15 ported in a lot of trunks. it might be possible, but i've had to build boxes literally in the trunk before with ported systems. even if the box would fit in the trunk, the trunk opening wouldn't allow the box to slide in.






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    Re: Help on box for a 15" going in a '01 Gran Prix

    Quote Originally Posted by hatemonger View Post
    it will be difficult to fit a 15 ported in a lot of trunks. it might be possible, but i've had to build boxes literally in the trunk before with ported systems. even if the box would fit in the trunk, the trunk opening wouldn't allow the box to slide in.
    Yeah, that's what I'm concerned about.
    As long as I can stick with a basic design I don't think it would be too big of a deal to get the box built w/o glue and do the final assembly in the trunk. I would think the biggest problem will be carpeting.




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    Re: Help on box for a 15" going in a '01 Gran Prix

    Quote Originally Posted by n2audio View Post
    Yeah, that's what I'm concerned about.
    As long as I can stick with a basic design I don't think it would be too big of a deal to get the box built w/o glue and do the final assembly in the trunk. I would think the biggest problem will be carpeting.
    You could build it with glue and liquid nails fairly simple. Just throw a big towel under the the bottom of the trunk, then when your done gluing and such and its dried just pull out the towel from underneath. I used screws to put together mine but after reading about using glue I hear thats best. Carpeting it in the trunk will probably be a PIT *** but it all depends how much space total its gona take up in that trunk. GL bro




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    Re: Help on box for a 15" going in a '01 Gran Prix

    Quote Originally Posted by Carnivorous18 View Post
    You could build it with glue and liquid nails fairly simple. Just throw a big towel under the the bottom of the trunk, then when your done gluing and such and its dried just pull out the towel from underneath. I used screws to put together mine but after reading about using glue I hear thats best. Carpeting it in the trunk will probably be a PIT *** but it all depends how much space total its gona take up in that trunk. GL bro
    are you using a box that is screwed together only, without glue? i would take the screws out, glue it, then reinsert the screws. today






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    Re: Help on box for a 15" going in a '01 Gran Prix

    Quote Originally Posted by hatemonger View Post
    are you using a box that is screwed together only, without glue? i would take the screws out, glue it, then reinsert the screws. today
    Well about 2 days ago I took the top off and put some more liquid nails along the edges and sealed up any leaks. Now the sub sounds so much deeper and more precise. Im not gona do any more work on this box cause ill be switching it out with a 15 and building a new box sooner than later. This next box though if im the one building it im definitely gona put it together with glue first. I need to get some clamps so itll dry together strong




    My car: 1999 Honda Civic EX EJ8
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    Re: Help on box for a 15" going in a '01 Gran Prix

    it should, but i doubt that it will fit between the strut tower.

    what about 32 x 16.5 x 24




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    Re: Help on box for a 15" going in a '01 Gran Prix

    Quote Originally Posted by iamamp3pimp View Post
    it should, but i doubt that it will fit between the strut tower.

    what about 32 x 16.5 x 24
    Something like that could definitely work. I don't need the 24" depth though.
    External dims of 32 x 16.5 x 20 would still give me 4.89 gross.
    Port at 2.25x15 at a length of 25.6 plus sub displ of .13 gives me an fB of 27, relatively flat FR to 30 and the f3 at about 27.

    The plan is to dry fit the box (no glue), and I think I will just spray it with a textured paint. That way it will be easy to disassemble, then reassemble with glue in the trunk if needed.




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    Re: Help on box for a 15" going in a '01 Gran Prix

    Quote Originally Posted by n2audio View Post
    Something like that could definitely work. I don't need the 24" depth though.
    External dims of 32 x 16.5 x 20 would still give me 4.89 gross.
    Port at 2.25x15 at a length of 25.6 plus sub displ of .13 gives me an fB of 27, relatively flat FR to 30 and the f3 at about 27.

    The plan is to dry fit the box (no glue), and I think I will just spray it with a textured paint. That way it will be easy to disassemble, then reassemble with glue in the trunk if needed.
    You gona put insulation along the inside edges? Might be leaky without it




    My car: 1999 Honda Civic EX EJ8
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    Thanks to Don @ SoundDeadenerShowdown I shouldn't be rattling

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    99grandprixGT's Avatar
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    Re: Help on box for a 15" going in a '01 Gran Prix

    i want to say 35 wide is as wide u can go to push it all way back. ill measure my box tommorow for ya.



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    Re: Help on box for a 15" going in a '01 Gran Prix

    Invest in a pocket hole jig from home depot for ~30 bucks. then proceed.




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    Re: Help on box for a 15" going in a '01 Gran Prix

    Quote Originally Posted by iamamp3pimp View Post
    Invest in a pocket hole jig from home depot for ~30 bucks. then proceed.
    I looked this up. I like this idea. If I build my next box then ill be getting it to put mine together. Even if your not building it inside your trunk I think this is a good idea to make sure the screws go in straight and securely




    My car: 1999 Honda Civic EX EJ8
    System: 2 12" DC XL (not installed) ~Amp: Sundown SAZ-3000D
    XS D5100R & XS D3100
    DC Power Engineering 180amp HO Alternator
    HU: JVC KD-A815
    Front & Back Stage: ID CTX65CS on MB Quart Onyx4.60 @280w per channel
    Thanks to Don @ SoundDeadenerShowdown I shouldn't be rattling

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    n2audio's Avatar
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    Re: Help on box for a 15" going in a '01 Gran Prix

    I ended up stopping by a local jy to find a gp and measure the trunk.
    I went with 36L, and 17ish x 16ish W/D. It's basically assembled, just have to even out some edges for paint. I'm going to get it painted, take it back apart, then probably glue about half of it. I'd much rather have to build it in 3 or 4 pcs in the trunk than 8.
    HOPEFULLY it all "comes together".

    FWIW - My nephew's 15. When I was that age I had an audiovox tape player, a couple pioneer 4's and some audiovox 6.5's all off the (2 ch) HU in my rusted out '79 Datsun pu.
    He has an '01 GP, with an AP10001D and a Diamond D615d2.

    Diamond D615d2
    Audiopipe AP10001D 1000W Monoblock Power Amplifier

    Not a bad starting point I'd say...The little bastard.




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