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Old 09-21-2008, 02:03 PM   #1
zephyrus
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Join Date: May 2005
Location: Rochester, NY
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1999 2.5rs
silverthorne metallic

Default stealth coupe subwoofer enclosure

Pics can be found here

I built this several weeks ago during summer break. I was making one for myself, and since I had a big sheet of material I wouldn't use otherwise, I made a second one in case anyone wanted it. I'm trying to be as detailed as possible with my description so you know what you're getting.

I'm using mine with an RE audio RE8 subwoofer, which sounds great in it. I included a picture of it installed in my car (I haven't put the speaker terminal cup in it yet, nor is the enclosure screwed in yet). With polyfill, the enclosure is a great size for it.

Specs:
Volume: ~0.30 cubic feet (measured by filling with pellets)
Mounting Depth: 4.75" max
Mounting hole: ~7 3/8"
Weight: ~5.5 lbs

How it was made:

-It's made out of 1/2" Trupan Ultralight MDF. This is basically the lightest stuff you can use that's appropriate for a subwoofer enclosure (other than maybe marine grade birch ply). I had to make a special order through a local lumber supply place, it's pretty hard to come by.

-The straight pieces were cut on a sliding compound miter saw and the outer curved piece was hand cut using a jig saw. All edges were sanded down nice and flat

-The pieces were glued together using a paste mixture of wood glue and MDF dust to make a nice gap filler. For each joint, I applied glue and clamped the two pieces at the correct angle, and nailed them together with a brad nailer. Each edge was coated with a second layer of the glue paste to ensure that the enclosure is totally sealed

-The hole was cut using a rotozip w/a hole cutter attachment. It's not the easiest tool to use and it got away from me at a couple points, but the edges of the subwoofer should cover any of the imperfections in the circle

-The speaker terminal cup is the nice screw kind from partsexpress.com. It's supposed to be a pressure fit, but I couldn't find an appropriately sized hole saw anywhere locally. I used a 3" saw (rather than 2 7/8", and glued the cup in place using Gorilla glue. Gorilla glue expands considerately while curing and made a very nice & solid seal

-The enclosure was coated twice with an enamel paint to protect it from moisture


What you would need to do to install it:
1. Drill pilot holes to mount the subwoofer to the enclosure
2. Wire it up (I don't have any wiring stuff to give you, sorry )
3. Use sheet metal screws to mount it in your car
4. The 'door' card probably won't fit with the sub installed. You'll need to mod yours like this: http://www.scoobymods.com/forums/showthread.php?t=136. I haven't done mine yet and I don't plan to until the winter (I'm in med school and very, very busy)

Oh, and if anyone wants to use my cardboard mock-up as a template, to make their own, let me know

I'd like to get $115 + shipping for the enclosure

Edit: SOLD!
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Last edited by zephyrus; 02-15-2011 at 08:48 PM.
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Old 09-26-2008, 03:18 PM   #2
zephyrus
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silverthorne metallic

Default

bump, feel free to make offers
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Old 10-19-2008, 01:28 PM   #3
zephyrus
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Default

another bump
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Old 10-19-2008, 02:29 PM   #4
LastResort
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Default

Nice looking enclosure.
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Old 10-23-2008, 08:04 PM   #5
zephyrus
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Thanks, it's just sitting in my basement. I'd probably take any reasonable offer
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Old 11-11-2008, 07:24 PM   #6
zephyrus
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another bump
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Old 11-11-2008, 07:56 PM   #7
Aaron'z 2.5RS
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Dude,

I gotta say, nice work.... Coming from someone that basically helps run the audio section here... That is a GREAT way for Coupe GC drivers to get some bass without a lot of weight... And measuring it out with pellets, excellent... and I never see your SN in the audio section, you should stop in and bless us with some build pics, if you have them... I've been thinking about something like this for a long time.. I think using some fiberglass for the back, I could easily get a 10, in there..

Have you tried the rear side panel over it yet? You should pull the sub and just get it in place and see... I bet it's be close, but, might fit..

Free bump.... nice work..

Last edited by Aaron'z 2.5RS; 11-11-2008 at 08:03 PM.
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Old 11-11-2008, 09:12 PM   #8
zephyrus
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I didn't take any in-progress pics :\, I didn't think there wasn't too much to see. A 10" won't fit in the enclosure I made, but it's definitely possible (though it'd tight and you'd have to find a sub that used a low enclosure volume).

With the sub installed in my car, I can't fit the panel over the enclosure without the rib on the inside of the panel hitting the sub. I suppose the sub mounting hole could be recessed, that'd probably let you use the panel without modification.

Thanks for the kind words
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Old 11-12-2008, 10:08 AM   #9
Aaron'z 2.5RS
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Quote:
Originally Posted by zephyrus View Post
I didn't take any in-progress pics :\, I didn't think there wasn't too much to see. A 10" won't fit in the enclosure I made, but it's definitely possible (though it'd tight and you'd have to find a sub that used a low enclosure volume).

With the sub installed in my car, I can't fit the panel over the enclosure without the rib on the inside of the panel hitting the sub. I suppose the sub mounting hole could be recessed, that'd probably let you use the panel without modification.

Thanks for the kind words
Well, word of advice, TAKE PICS, whenever you do any sort of project.. I mean I know what you did and how you did it, but others might want/need an example... I used to think the same, till I started doing more and more..

I can also see a 10 wouldn't work in your box, but if fiberglass was used for the back, it would use the space much better... (just ideas)

there are plenty of shallow mount, small box subs out these days that "could" possibly work in YOUR box... who knows, you might be able to retrofit one into it, if you liked... If you search my SN and select the audio section, I compiled a HUGE list of all the shallow mount subs I found.. something to consider...

Cheers man.. good work.
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Old 11-19-2008, 02:41 PM   #10
zephyrus
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Quote:
Originally Posted by Aaron'z 2.5RS View Post
I can also see a 10 wouldn't work in your box, but if fiberglass was used for the back, it would use the space much better... (just ideas)
I'm not sure if you could get much more volume using fiberglass, as the volume of the enclosure is really limited by the opening size in the car. You might be able to get another .1 ft^3. You could get a whole buttload of more volume if you enlarge the opening (cut up the sheet metal) or made the fiberglass enclosure non-removable and built it up into the quarter panel space.
Quote:
there are plenty of shallow mount, small box subs out these days that "could" possibly work in YOUR box... who knows, you might be able to retrofit one into it, if you liked... If you search my SN and select the audio section, I compiled a HUGE list of all the shallow mount subs I found.. something to consider...
My 8" RE audio sub (which I designed the enclosure for) sounds great

Thanks again for the kind words, and another bump
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Old 12-10-2008, 02:08 PM   #11
zephyrus
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bumpo
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Old 12-23-2008, 01:04 PM   #12
zephyrus
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silverthorne metallic

Default

holiday bump

Last edited by zephyrus; 02-15-2011 at 05:42 PM.
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Old 01-20-2009, 09:36 PM   #13
zephyrus
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Member#: 87992
Join Date: May 2005
Location: Rochester, NY
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1999 2.5rs
silverthorne metallic

Default

another bump
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Old 05-04-2009, 04:05 PM   #14
zephyrus
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Any interest in this?
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Old 12-31-2010, 07:56 PM   #15
zephyrus
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Bump from the dead!
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Old 01-02-2011, 12:24 PM   #16
backslider
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If I had the cash, I'd be all over it, and if I had a 8 inch laying around.
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