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Fiberglass Stealth Sub Box Walkthrough

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Old Jul 22, 2007 | 12:45 AM
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Default Fiberglass Stealth Sub Box Walkthrough

This guide and others are available at http://ws6.forgeseven.com

***Disclaimer - You assume all responsibility in undertaking this project. I am not responsible for you FUH-messing up your car. With that said, have fun, this project is very easy. If you can spell your name, you can do this. Let's get started.

Keep in mind, I had never done any fiberglassing before. You can do this, just take your time.



1. I used the following supplies. You may want to use more/different.





    2. Tape the inside of cubby hole in the rear of the car. Use at least 2 layers. Then put some turtle wax over the tape to prevent the resin from sticking to the tape too much.





    3. Putting the first layer of glass down:
    **Note - Using the fiberglass cloth for the first layer to create the mold may alleviate some headaches for beginners



      4. Perform steps 2 and 3 on the underside of the piece of trim that overhangs the cubby hole.


      Last edited by blackened; Sep 24, 2009 at 01:31 PM. Reason: Added site link
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      Old Jul 22, 2007 | 12:45 AM
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      5. Add 5-6 layers of fiberglass to the box and trim molds











      6. Mock up how the top will sit in relation to the bottom, brace it, and tape up the holes. Then glass the two pieces together. Marry them in a sense.
      **Note - A hot glue gun can become indispensible in a situation like this.







      7. When its all joined up, its time to make a bondo milkshake to bring all the boys to the yard. This is accomplished by taking resin w/ hardener (not too much) and mixing bondo w/ hardener in with the resin until it reaches the consistency of a good (insert favorite flavor here) milk shake. Then spread it all over the inside of the box make sure all surfaces are covered. When it hardens, your box will be ultra-mega-superhero strong and hopefully pin-hole free.





      8. When fully cured, take the box and place it on the mdf and trace the outside of it.



      9. Now take your sub and put in the middle of the tracing and trace around the sub. Now you have the outline of the baffle. Now cut it out with the jigsaw.





      10. Use a sander to close the box to baffle gaps. This can take a bit of time. Take it slow

      11. Drill a hole for the speaker wire and seal it with Liquid Nails. Mount the baffle to the box using the L-Braces. Seal up the cracks using the Liquid Nails. Test fit.
      **Note - Pre-drill everything. It always makes projects less stressful.





      12. Carpet it using the same directions in the amp rack walkthrough.

      13. Hook-up and mount the sub and place in car. Let the boom commence..









      I originally posted this on pfrperformance.net:8080.

      Last edited by blackened; Jul 22, 2007 at 01:35 PM.
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      Old Jul 22, 2007 | 08:39 AM
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      2MuchRiceMakesMeSick's Avatar
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      Not bad again!
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      Old Jul 22, 2007 | 10:01 AM
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      thanks man, i appreciate it.
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      Old Jul 22, 2007 | 10:10 AM
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      I would not think that 3 layers of chop mat would be strong enough
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      Old Jul 22, 2007 | 01:36 PM
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      blackened's Avatar
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      sorry, typo, it was actually ~6 w/ a thick layer of the resin/bondo mix
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      Old Mar 26, 2008 | 01:31 PM
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      this should have been a walkthrough almost done making mine,... will be doing the milkshake today - thanks a bunch for this ! awesome!
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      Old Mar 26, 2008 | 05:36 PM
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      Looks great. I started mine last week:





      I lined mine with aluminum foil to get the shell. I have the face cut out but I still have a long ways to go.
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      Old Mar 26, 2008 | 06:07 PM
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      Damn Brian! You and OP got some good looking stuff going. I might have to do one for myself...
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      Old Mar 26, 2008 | 06:13 PM
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      Oh by the way, 4 layers of mine was enough for me to stand on my shell without cracking it I don't think I'll need the milkshake.
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      Old Mar 26, 2008 | 08:31 PM
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      wow dude very nice writeup..really appreciate the time you took to imform us about this. I will be doing this this summer. *SUBSCRIBED*
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      Old Mar 26, 2008 | 09:42 PM
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      TXB4Z's Avatar
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      Nice write up. I wish something like that was around years ago when I built a stealth box for Z28. I pretty much winged it and it came out pretty well.

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      Old Mar 27, 2008 | 01:39 AM
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      Bump!!!
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      Old Mar 27, 2008 | 06:11 AM
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      01ssreda4's Avatar
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      good write-up
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      Old Mar 28, 2008 | 01:12 AM
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      02Z28LS1's Avatar
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      one thing you can do to make it nice & clean is to use one of those "perfect circle" router attachments, if you have a router....or you can make a router attachment of your own out of some thin pegboard or something similar.

      these things are great for cutting the circle(s) out for your subs.....makes it fit really nicely, looks extremely clean, and helps you do avoid air leaks that irregular edges can cause.
      Reply
      Old Apr 20, 2008 | 04:27 PM
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      SSmokinz's Avatar
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      Awesome write up. Gonna attempt one soon!
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      Old Apr 21, 2008 | 06:52 PM
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      ok so i started mine. itll take a while before its done. i just letting it cure in the car, and i used chop mat for the first layer, i know, i did it the hard way.



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      Old Apr 21, 2008 | 06:55 PM
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      eddielb's Avatar
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      looks good bud - one thing is to make sure the plastic cover still fits before you glaass the whole box, mine didnt and I ended up h aving to cut my box and reglaSS it again
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      Old Apr 21, 2008 | 11:46 PM
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      yea it fits. but thanks for the advise, i could see how annoying that would be.
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      Old May 2, 2008 | 11:22 PM
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      blackened's Avatar
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      thanks for the positive replies. It looks like you guys are doing an awesome job.
      I hope more people take the time to try their hand at it and do as good a job as you guys have. I'm glad the walk through was informative and apparently easy to follow.
      Reply



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