4 apline type r's

[snb778 5,000+ posts]

Had 4 12" type R's in my avalon.... HIGHLY doubt you can get them in a cobalt... we literally had to beat the trunk with a sledge hammer in some spots to make the boxes fit

Heres my log http://www.caraudio.com/forum/showthread.php?t=124117&highlight=avalon

 

[tommyk90 5,000+ posts]

4 10's ported would be d*mn near impossible. You could probably do 3 ported, but thats it.

4 10's sealed should get plenty loud in such a small car though.

 

[babaganoush123 10+ year member]

why dont u do 3rs?

 

[hittin_hard 10+ year member]

cause i already got 4. ive been checkin with some people on designs for 4

 

[snb778 5,000+ posts]

NOW... i have 2 15's...and they are MUCH louder... although the boxes werent built right for the 4 12's

 

[hittin_hard 10+ year member]

ive been using the drafting program from google and ive been using different box calculators to come up with some way to make the boxes fit and to where they have the right frequency and sound right

 

[tommyk90 5,000+ posts]

ive been using the drafting program from google and ive been using different box calculators to come up with some way to make the boxes fit and to where they have the right frequency and sound right

Don't waste your time man.

With the dimensions you listed, thats a MAXIMUM of 5 cubes. That doesn't include any sub or port displacement. For a ported application, you're looking at a minimum of ~1.25 cubes per sub AFTER displacement. That's already 5 cubes right there. Factor in port and sub displacement and you're looking at more like 6-6.5 cubes MINIMUM.

You just don't have the space to fit 4 10's ported.

 

[king ranch 5,000+ posts]

u r looking at 4.9 before any sub and port displacement with the dimensions you gave

heres the maunfactures specs

Sealed Box Volume: 0.5 - .8 cubic ft

Ported Box Volume: 0.6 - 1.25 cubic ft

you are looking at 1.2 cu ft per sub before any displacement at all so no way ported unless you have a supersmall aero port box but i would just go with 4 of them sealed or 2 ported and put alot of power to them

 

[bluelceii 10+ year member]

I have 4 15s in my accord...... I also no longer have a back seat..... 12.228 cubes tuned to 34. Box IS below the window line too...



you get the idea.....

 

[king ranch 5,000+ posts]

only way to go ported is give each sub 1cu ft net and do aeroport so you will have right around 1cu ft for aero and sub displacement which can easily be done

use a 6" aero and tune the box to 34hz will give you 28" of port area and the aero displacement will be .18 then i am not sure but guessing each sub is around .06-.08 for displacement just say .08 thats .32 also

so .32+.18=.50 displacement so that would work and leave around 4.4-4.5 which will give each sub about 1.1net so thats about the only way but i would go 2 ported or 3 tops or 4 sealed

 

[tommyk90 5,000+ posts]

only way to go ported is give each sub 1cu ft net and do aeroport so you will have right around 1cu ft for aero and sub displacement which can easily be done
use a 6" aero and tune the box to 34hz will give you 28" of port area and the aero displacement will be .18 then i am not sure but guessing each sub is around .06-.08 for displacement just say .08 thats .32 also

so .32+.18=.50 displacement so that would work and leave around 4.4-4.5 which will give each sub about 1.1net so thats about the only way but i would go 2 ported or 3 tops or 4 sealed

one 6" aero isn't sufficient port area for 4 10's. 2 is the minimum I would do.

I wouldn't put type-rs in 1 cube ported either. 1.25 is about as small as I would go.

 

[I6pwr 10+ year member]

I just finished putting (ONE) 10" type-R in the LOML's jetta in a sealed box. Believe me...you won't need 4 for others to hear you coming. Save the frustration and build for 2 ported 10 inchers.

The single 10" really pounds hard, anymore and I will need some loctite //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

You could sell the other two or save them for another project.

 

[hittin_hard 10+ year member]

i just drew 4 spearate vented boxes at 1.3 cubic ft at 35hz. and it looks like it'll fit. anyone think that size box will work for a type r??

 

[tommyk90 5,000+ posts]

i just drew 4 spearate vented boxes at 1.3 cubic ft at 35hz. and it looks like it'll fit. anyone think that size box will work for a type r??

How in the world did you get 4 separate boxes to fit in there? What are the dimensions?

 

[hittin_hard 10+ year member]

each box is 12.5depthx14heightx21width. and it has a 22" L shaped vent at 1.5" wide