Someone School me on boxes

[Frito11 10+ year member]

just to throw out a design having no idea what this is fitting in this is what is recommended by the mfg optimally everything exact except i swapped the square port to a 4" port to make it easier to build correctly.

Box Parts (Optimum Square Prism)

1 Top, 1 Bottom: 12.91 © x 19.97 (b) in

0.75 (thick) in

1 Front, 1 Back: 29.88 (a) x 18.47 (d) in

0.75 (thick) in

2 Sides: 29.88 (a) x 12.91 © x 0.75 (thick) in

Vent Parts

2 Ducts: 4.25 (ext. diam.), 4 (i.d.) x 10.62 (h) in

 

[Frito11 10+ year member]

I dont know what i found then cause i got mine from there too.
http://www.memphiscaraudio.com/documents/Mid2009%20Consumer%20Enclosure%20Recommendations.pdf

the PDF your pointing too is older than the one that i used that clearly says "updated" on it.

regardless 2 cubes is way beyond what a ported 10 needs, most 12's don't even need that much air space per sub,they are usually around 1.8-2 max.

while if you graph the performance it may look like the bigger box is flatter and goes lower in practice it just does not work as well and can even cause the power handling to go down on the subwoofer.

i suppose though the real question is what are you looking for in your system?

hard hitting bass?

low bass?

tighter but higher bass?

what kind of music do you listen to most?

 

[GrandPrixAlpine 10+ year member]

Alright im going to start all over....

Car: 98 Grand Prix GT

Location:Trunk

Firing: Rear

Subs: 2 Memphis M-Class 10"

Amp: M-Class 2/1 500W

Space:40in Width Available

13in of Height Available

Depth more than needed.

Music:Mostly Hollywood Undead, A little Rap, Lot of Rock, and some country.

I like hard hitting bass. Used to have a Type X running 1000RMS and i just downgraded for a while cause money is running low. so i still want to feel it.

So lets go with your Dimmensions

1.65 / 38 / 10.5 x 1.25 x 16.75

Now explain how to turn that into a Dual Single Chamber Box

 

[Frito11 10+ year member]

Box Parts (Square Prism)

1 Top, 1 Bottom: 20.59 © x 31.5 (b) in

0.75 (thick) in

1 Front, 1 Back: 11 (a) x 30 (d) in

0.75 (thick) in

2 Sides: 11 (a) x 20.59 © x 0.75 (thick) in

Vent Parts

2 Ducts: 4.25 (e), 4 (g) x 10.62 (h) in

external box dims are

31-1/2" wide x 12.5" tall x 20.59" deep

put to woofers on the 31.5 x 12.5 face as i assume that this is your truck your putting it in and i'd fire the ports out the same side or out a side if you have a least some space for the sound to escape.

fronts probably best though then you can try with the box firing to you or to the trunk lid. if you dynomat the trunk you likely will get a boost in SPL from rear firing the woofers/ports into dynomat

 

[Frito11 10+ year member]

here this will better explain how each panel comes together

edit.

it would be a good idea to add a couple vertical braces betweent the top and bottom panels to stiffen them up. the other dims are small enough that they don't really need bracing imo.