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FG Subwoofer enclosure

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  #1  
Old 02-26-2007
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FG Subwoofer enclosure

Well after finding that the sealed box that my P2 10" was in just wasn't cutting it , i decided to go ahead and build a new enclosure. I have recently been getting into fiberglass and thought that this would be a great project to try some new skills out on.

I began by pulling the pass. jumpseat. i had my old box back there and it was never used anyway so it wasn't a real loss.

Next i started to lay out and mock up some of the panels for the bottom of the enclosure.
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and finaly came up with this design:
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The next step was to cut out the ring for the sub to mount to. i made it a flushmount ring and used 3/4" MDF:
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Now was the fun part getting to position the ring within the box to get the shape that i wanted. Eventually i came up with this:
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Now came time to streach the fabric (i used a spandex like material that actually was made almost completely of cotton) and secure everything:
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After getting the fabric just right i applied a layer of resin to create the thin brittle "shell" that i was to work off of:
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When that cured i began using Duraglaze to reinforce certain areas in the enclosure that needed it. Once that was done i was finally able to start laying glass
as of now there are only a couple of layers on the inside. I began working on the outside becase of difficulty of getting inside to glass the corners.:
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so far this is all that i have gotten done. i plan on having the glass work dond by the end of the week and by then there should be time to work on the finishing of the surface. I'll try and keep things up to date as best as i can. well i gotta head off to the garage once again.
 
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Old 02-26-2007
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lookin good. keep up the good work.
 
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Old 02-26-2007
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looks pretty good....same way we make our glass boxes around here...
 
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Old 02-26-2007
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Man, keeps reminding me that I need to get started on mine...gosh. What's the volume? looks to be a little more that 1cf...
 
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Old 02-26-2007
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Looks VERY nice man, many props!
 
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Old 02-27-2007
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i haven't yet found the vol with packing peanuts but i think it is somewhere in the range of 1.4-1.6 cu. ft. It's gonna be vented and tuned to about 35 hz.
 
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Old 02-27-2007
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that's lookin real good man! i envy you 4dr guys so much! i
 
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Old 02-27-2007
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Looks like a good start! Looking forward to seeing the rest of it!
 
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Old 02-27-2007
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That'll look sweet when your done!
 
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Old 02-27-2007
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Haha, I went outside today around noon and built mine...lol. All I have to do is pick up some fabric and staples!
 
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Old 02-28-2007
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mines sitting in the shop class. teacher likes to disappear for weeks on end and lock the tools up. I'm about to grab my tools and finish it.....
 
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Old 03-03-2007
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well ended up with four layers of FG, the port calculated and built, I am ready for final surface prep. i get to look forward to a couple of days of pure sanding joy! yeah right, well it'll be nice for this thing to finally be complete. All i can say is that i hope it ounds as good as it should. i ended up tuning it to around 38 hz. plan on dropping that RF P2 and steping up soon. well i'll try and get some pics when shes a little further along.
 
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Old 03-03-2007
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Yeah I put my first coat of resin on lastnight and *suprise, suprise* the temp dropped under 40*.... and I mixed it for warm weather, too, damnit. It was over 60* outside when I finished it, now it's still not dry...
 
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Old 03-03-2007
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what brand of resin are you using? For this project ( my first FG experience) i used the bondo stuff. Not a good idea. i hate it. gloppy and doesn't wet out the mat very well. I recently ordered some off of UsComposites.com. Its the B-440 polyester resin. I've only heard good things about it.
Well i Got the thing together enough to get the sub in and take it for a test run. I love it! def goes lower then my old box and is cleaner. it fits nicely and is now ready for the finshing process.
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Old 03-03-2007
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Sweet man, VERY nice work!
 
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Old 03-03-2007
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thanks bought a new camera and thought i would take a small vid of the sub in action. Sound is kind of distorted:
 
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Old 03-03-2007
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looks good.....i need to know how to do fiberglass......so i can build me a new box...
 
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Old 03-04-2007
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Originally Posted by lifted97ranger
looks good.....i need to know how to do fiberglass......so i can build me a new box...
Take a look around here:
www.fiberglassforums.com
 
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Old 03-04-2007
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I used some Elmer's stuff we sell at Lowe's and as far as I know its done fine... it was my error not mixing/applying at the right temp...

I've been all over us composite's site, but I didn't think I'd need something high-caliber like that... I'm trying to keep the costs low, since I'm using sub-par equipment anyway.

When I get a nicer amp/sub combo, I'll build a better box and I'll have a little more experience under my belt as well...
 
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Old 03-06-2007
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well got a couple layers of rage gold applied and sanded down. There are only a couple of spots that need a third layer. its going pretty smoothly and i thinink i am going to really like the results.
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Old 03-06-2007
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That's lookin real good! I wish I had the time & know-how to do that.
 
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Old 03-06-2007
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Ha, it's not hard... all you need to start is your truck, a sheet of MDF, and a couple power tools... Why does everyone think it's so "skill-requisite" ? Just do it!

Anyway, I pretty much finished up mine today, it's in the truck and I'm gonna take to to the local truck accessory place and get it sprayed with black bed liner. It'll be all sealed up and it'll reinforce/dampen the 'glassed part.

Yours definitely looks alot better than mine, good job!
 
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Old 03-07-2007
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Originally Posted by rolla_guy72
Ha, it's not hard... all you need to start is your truck, a sheet of MDF, and a couple power tools... Why does everyone think it's so "skill-requisite" ? Just do it!

Anyway, I pretty much finished up mine today, it's in the truck and I'm gonna take to to the local truck accessory place and get it sprayed with black bed liner. It'll be all sealed up and it'll reinforce/dampen the 'glassed part.

Yours definitely looks alot better than mine, good job!
He's right you know...it really isnt that hard to do. you just have to do a little research and dive in. I mean its not like you have to have some special skill to do it. I decided one day that i would like a FG box for my sub, found fiberglassforums.com and studied untill i felt that i was ready for a small test project (for me they were a set of pods for a pair of 5x7's).

I was thinking about that bedliner stuff or some other textured spray. you should post some pics of your box on here, i'd like to see your design and the final product.

yeah just jump in, start small if you don't like it then so be it, but if you do then you just opened yourself up a whole new set of oppertunities.
 
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Old 03-07-2007
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looks good so far man.

once this crappy winter is over, and once i can get my garage back in order, i'll be building another box... seeing pics of other's just makes me want to get out there now and start building, lol.
 


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