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Making a fiberglass subwoofer enclosure.

Old Jun 16, 2008 | 01:23 PM
  #1 (permalink)  
GDrag's Avatar
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From: Kent, WA
Default Making a fiberglass subwoofer enclosure.

Hey guys im going to be making a fiberglass enclosure for a 12 inch sub, just want some more bass. Aside from that.

Any one on this forum an experienced fiberglass maker? If so what products have you used and what steps do you go through when making a fiberglass enclosure.

I been researching a lot about this topic, and i found one that might interest a lot of people! It sure made me get out of my seat, and now im trying to make one! haha

Here is the link:

http://forums.vwvortex.com/zerothread?id=3602579

Any help would be appreciated! Thanks!
 
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Old Jun 16, 2008 | 02:25 PM
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Default Re: Making a fiberglass subwoofer enclosure.

i had one in the making for my car and decided to scrap it before i finished. i decided i didn't need the extra weight. its alot of work, especially your first time. i also found that using mdf sheets anywhere you can utilize a flat surface will save you alot in the end with time and materials.

it takes a while to get the smell out of your car too!
 
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Old Jun 16, 2008 | 03:08 PM
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Default Re: Making a fiberglass subwoofer enclosure.

I manufacture them all the time
they are a pain but take it slowly
and i think theres a youtube video on them

i make them with wood ring to hold sub then
Tshirt material wrapped around and stretched to mold shape
then add resin to harden
then glass over, sand then gelcoat
sounds simple after doing them for over 20 years

Have Fun
Any questions shoot me email
 
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Old Jun 17, 2008 | 09:48 AM
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From: Tampa, FL
Default Re: Making a fiberglass subwoofer enclosure.

where are you going to put the enclosure? i tryed making a custom one for the back driverside corner of the trunk... it was much harder than i had anticipated however and i ended up giving up.
 
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Old Jun 17, 2008 | 11:42 AM
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Default Re: Making a fiberglass subwoofer enclosure.

im going to be making it for two 12" and an amp in the middle, so it's going to be across the whole trunk. I heard about how it is difficult, and this is the 2nd time im going it, the first time i forgot to add more layers, so when i put in the subs the fiberglass was rattling, not going to make that mistake again. haha

thanks for all the help guys! appreciate it!
 
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Old Jun 17, 2008 | 12:14 PM
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HyprLtH20's Avatar
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Default Re: Making a fiberglass subwoofer enclosure.

so how are you going to make the cast for the enclosure? i dont think we really have a solid peice to cast from like the car in the diy had.
 
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Old Jun 17, 2008 | 01:26 PM
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From: Lakeville, MN/ River Falls, WI
Default Re: Making a fiberglass subwoofer enclosure.

I have a fair deal of knowledge on fiberglass, take my advice build the sub enclosure out of MDF or wood, seal it then just make a fiber glass overlay that is Mearly cosmetic. 1) you can pretty much do whatever you want and not have to worry about proper size for the subs or rattling 2) if you are stuck on fiberglass go to homedepot get some great stuff insalation, line your backseat with plastic and tin foil and tape then spray it all over IN A PLASTIC BAG, its the best way to get a reverse mold and figure out correct demsions for a fiberglass box. Not to be a D!ck but it sounds like you are getting into something you are not ready for. Its not as easy as laying a few layers of fiber and creating a flat face for a sub, ITS all about demesions and thickness minnimum I would do 6 layers of fiber if I was going to build a complete box. So roughly (6) 6x6ft sheets of fiberglass woven or matt, plus 3 gallons of resin, 12 oz of hardner, your looking at spending about $500 that doesnt include things like tape, brushes, mixing trays, resporators, bondo, paint, sand paper, carbid bits for cutting and trimming, Dremmel, 12in sub rings for a rolled edge, THAT IS JUST TO NAME A FEW there is always more crap you need that you didnt think about. Not to deter you but I hate the how to's posted online making this look so easy when most of the time it is something that should be left to the professionals. Feel free to ask me any questions or check out some of my threads for ideas I wouldnt mind helping you through this I just want you to know what you are getting into be prepared to spend $1200 assuming you have no supplies. www.fiberglast.com is where I get all my stuff.
 

Last edited by jonnyangel04; Jun 17, 2008 at 01:39 PM.
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Old Jun 17, 2008 | 01:37 PM
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HyprLtH20's Avatar
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From: Tampa, FL
Default Re: Making a fiberglass subwoofer enclosure.

Originally Posted by jonnyangel04
I have a fair deal of knowledge on fiberglass, take my advice build the sub enclosure out of MDF or wood seal it then just make a fiber glass overlay that is Mearly cosmetic. 1) you can pretty much do whatever you want and not have to worry about proper size for the subs or rattling 2) if you are stuck on fiberglass go to homedepot get some great stuff insalation, line your backseat with plastic and tin foil and tape then spray it all over IN A PLASTIC BAG, its the best way to get a reverse mold and figure out correct demsions for a fiberglass box.
i wish i would have know about that! i asked everyone i knew if there was anything like that that would make a perfect mold for me.. ill post a pic of what i created when i get home from work. this will make you laugh til you pee!! lol
 
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Old Jun 17, 2008 | 10:48 PM
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GDrag's Avatar
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From: Kent, WA
Default Re: Making a fiberglass subwoofer enclosure.

Originally Posted by jonnyangel04
I have a fair deal of knowledge on fiberglass, take my advice build the sub enclosure out of MDF or wood, seal it then just make a fiber glass overlay that is Mearly cosmetic. 1) you can pretty much do whatever you want and not have to worry about proper size for the subs or rattling 2) if you are stuck on fiberglass go to homedepot get some great stuff insalation, line your backseat with plastic and tin foil and tape then spray it all over IN A PLASTIC BAG, its the best way to get a reverse mold and figure out correct demsions for a fiberglass box. Not to be a D!ck but it sounds like you are getting into something you are not ready for. Its not as easy as laying a few layers of fiber and creating a flat face for a sub, ITS all about demesions and thickness minnimum I would do 6 layers of fiber if I was going to build a complete box. So roughly (6) 6x6ft sheets of fiberglass woven or matt, plus 3 gallons of resin, 12 oz of hardner, your looking at spending about $500 that doesnt include things like tape, brushes, mixing trays, resporators, bondo, paint, sand paper, carbid bits for cutting and trimming, Dremmel, 12in sub rings for a rolled edge, THAT IS JUST TO NAME A FEW there is always more crap you need that you didnt think about. Not to deter you but I hate the how to's posted online making this look so easy when most of the time it is something that should be left to the professionals. Feel free to ask me any questions or check out some of my threads for ideas I wouldnt mind helping you through this I just want you to know what you are getting into be prepared to spend $1200 assuming you have no supplies. www.fiberglast.com is where I get all my stuff.
wow! thanks for the great info.

info is always welcome!
 
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