Good Subwoofer Enclosure Design?

hi everyone! I've purchased 2 alpine e-10 subs, and an alpine 500watt monoblock amp to power them.

I've been doing a whole lot of research and taken a lot of measurements in the trunk. with what I've come up with i used the calculators on this site to design myself this box:



the net interior enclosure volume is: 2.35 cu^ft (without subs)
the net interior port volume is     : 0.50 cu^ft

im pretty sure its the biggest box that will fit into my trunk opening..


please let me know what you think, and anything you might change as this is going to be my first custom made box! :)

thanks in advanced,     Patrick.

amp = Alpine Mono Amplifier MRP-M500
sub = Alpine 10" 250W SWE-1043 (x2)
car = 2000 neon... haha

it looks like it should be pretty good. as long as your specs for the subs and the specs for the box match up then imo it should hit good also. thats pretty bad how you designed it tho. what did you use? and i also have that same  alpine amp on a type s 12, upgrading to an r. its bad tho. just dont mount it to the box. and i like the fact that your flush mounting them

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How do you plan to curve your  MDF at the port exit?

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Support the12volt.com

 Im sure he plans to Kerf the mdf to make the curves

thanks pcana, i used google sketch up to design the box (its free!)
i really like the look of recessed subs too.
any suggestions on where to mount the amp? why not on the box? not too much room in the neon... haha

yes im planning on doing kerf bends, and then filling the gaps with wood glue.

anyone know where i can buy the carpet to cover it with?

1: Gonna hafta look into that Google Sketch Up... Never heard of it, but if it lets you do THAT kind of stuff... that's buh-DASS!!! =)

3: If the amp is small enough, I'd recommend under the seat. I never recommend mounting an amp on a box, unless that box is braced FAR more than you have indicated in your drawing. Those walls are gonna flex and vibe like nobody's business, especially the back and right end! See this thread to give you an idea of proper bracing... By the way everybody, pics to follow soon for the completed setup of that box! Looks sharp, sounds better! The walls are like knocking on stone, and the Gorilla Glue sealed that thing tighter than a duck's butt! No breathing, ZERO flexing...

3: Don't bother filling the kerfs. It won't be necessary. At those dimensions, once curved, and held in place top and bottom, you'll have no strength or flex issues. I promise...

4: Any decent fabrics store in your area should be able to provide you fabric to cover that up!

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

nice design...looks like you got most of your design style from PoundThatSound

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Custom Enclosure Design

Yea, i have sketch up on my flash drive, im just not great on it. and i wouldnt mount my amp to my box because of the rattling and vibrations from the subs. one other thing, just make sure that the port stays the same width all the way through

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yeah! his work is what inspired me to build my own box! i saw them on the other forum, his boxes are amazzzing!

and yes the port is the same width all the way through :)

what do you think about trying to fit the amp in between the two rear speakers? behind the back seat

aznboi3644 , i actually used your tutorial to help me use sketch up, it was a great help, thanks!

DYohn] wrote:

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How do you plan to curve your  MDF at the port exit?

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Bendywood, i used it on a custom sealed enclosure made of fiberglass and it worked great.

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Brandon Pieniozek

Thanks...I saw a lot of crappy tutorials on Sketch Up. So I made my own as simple as I could that would be easy to understand.

Most tutorials only show how to draw walls.

Good luck on the build. I suck at cutting kerfs lol

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Custom Enclosure Design

lol well thanks for the support! im planning on doing a few practice bends until i get the hang of it. it should be fun :)

aznboi3644 wrote:

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Thanks...I saw a lot of crappy tutorials on Sketch Up. So I made my own as simple as I could that would be easy to understand.

Most tutorials only show how to draw walls.

Good luck on the build. I suck at cutting kerfs lol

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I missed that.  Can you link to it, or repost it on this forum?

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Here you go Steve...it could be a pretty good sticky for others who want to learn to use Sketch Up

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Custom Enclosure Design

Thanks.  I'm going to have a good look at that and try it out.  I've used Sketchup before, a couple of years ago, but didn't spend the time to get it figured out.  Your tutorial looks like it will help a lot.

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

well i finally built my box!
it was a great success, i had to try kerfing a few times and ended up buying a new blade for my table saw... in the end i did figure it out.

i have a few few build pics here from when it was first built, painting and carpeting.. i am quite impressed with myself :)\














pics comming soon of what it looks like in the car, i have yet to install my cap, thats next weekend..

what do you think?

thanks everyone

That box looks AWESOME! Job well done! I KNOW how to do that stuff, and I even have the tools to do it, and I never actually do. Kudos to you and having the chutzpah to make the effort!

You SHOULD be impressed with yourself! Again, job well done!

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Looks GREAT. Nice job, and congrats on the successful build.

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Sweet build man! Make me look bad :(.

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This is what I do for FUN!

Wow, that looks really nice. Kerfs are not easy to do with that kind of success. It looks like it is a really good bend. The paint also looks like it came out good.