Custom Sub Boxes.

[marf100]

I'm going to buy a subwoofer soon and an amp, and need a sub box, and because i've got nothin better to do i want to see if i can build my own and if it doesnt work or look good i'll just buy a proper one. I've got a Punto Sporting Mk1. If anyone has sketches or anything on how to make the boxes, or any type at all so i have at least some idea on how to start. Which wood should i use and where do i screw the box into?

Any help will be appreciated, thanx.

Marf

 

[chaos]

Use 18mm MDF, strong wood glue, sealant (I used Liquid Nails, which can be used for both gluing and sealing ) You need to calculate how big your enclosure should be, and how much space you have available to you before deciding on a design. The volume required will be dependant on the sub chosen. Make the sub baffle (where the sub will mount) a double thickness for rigidity, and considering adding bracing in the enclosure Don't make two dimensions of the enclosure equal - this will create standing waves

HTH

 

[Slippy]

https://www.fiatforum.com/i-c-e/59840-fiberglass-sub-enclosure-build-56k-warning.html

 

[marf100]

Use 18mm MDF, strong wood glue, sealant (I used Liquid Nails, which can be used for both gluing and sealing ) You need to calculate how big your enclosure should be, and how much space you have available to you before deciding on a design. The volume required will be dependant on the sub chosen. Make the sub baffle (where the sub will mount) a double thickness for rigidity, and considering adding bracing in the enclosure Don't make two dimensions of the enclosure equal - this will create standing waves

HTH

erm when you said dont make two dimensions of the enclosure equal, what do you mean?and what is bracing, im new with cars just turned 18 a few days ago.

 

[chaos]

erm when you said dont make two dimensions of the enclosure equal, what do you mean?and what is bracing, im new with cars just turned 18 a few days ago.

Don't have the height, width and depth of the enclosure the same, i.e. having a square face or a cube.
Bracing is just that - bracing within the enclosure to make it more rigid and reduce flex. It can be just a piece of triangular timber screwed to 2 adjacent sides.

 

[marf100]

thanx a lot

 

[paulbfd]

Wadding can help with the standing wave thing. It can also help trick the sub into thinking it's in a larger box than it is.

 

[marf100]

what type of paddin?

has anyone got any sketches of their boots or pics so i can av an idea of what to go towards?

 

[paulbfd]

what type of paddin?

"Wadding" or polyester fibre fill, or in English, that stuff inside Teddy Bears!

 

[marf100]

now that makes sense lol, thanx a lot.

 

[Luke M]

heres my boot install. made it myself

 

[marf100]

thats cool

 

[SpazVan]

Dude, save the time and hassle; A decent car audio shop will sell boxes; probably 30quid or so but make sure it is made of MDF (custom wood).

If you don't have the speaker already, a single 10inch speaker would be heaps so the box would be appx 24 litres internal volume. ie, that is appx twice as big as your girlfriends hand-bag...that is assuming she is staying the night. Aiiiiight!

 

[wozza]

There generic boxes like the box for most 12's is rather tiny. mines in a generic enclosure the new one im building which is actually what its supposed to have is around 36" x 15" x 13.5".

different size boxes and ports are what give it certain sounds.

 

[PuntoMK3]

i had a ported sub box for 2 12s. made to work the best for them subs in my car, i got a profesional shop to make it cost £200


http://img.photobucket.com/albums/v155/PuntoMK3/P4170015.jpg

 

[wozza]

See showing its cheaper to make your own couple sheets of MDF if you need 2 of 18mm stuff around £17 a sheet some hard as nails or something to act as sealant and help keep it together and some nails bit of cheap carpet you have exactly the same thing as you pay £200 for.

Total cost for a decent box would be less than £50 Just take a few hours of your time and some maths.

 

[marf100]

nice 1

 

[chaos]

Prefab boxes are not really recommended, 99% of the time, they are either made of too thin a material, are the wrong volume for your intended sub, etc.
A sub's physical size is not indicative of its required enclosure volume - the theoretical optimum volume of an enclosure is figured out using the T/S parameters of the sub