Alpine type R box difference?

[Qexler 10+ year member]

I have one alpine Type R 12" in a 0.75 cubic ft3 box.

I want the bass to be louder still though, I heard my friends and I like it when the bass has that breathtaking feeling. It's all I am really aiming for, it brings me into the music and I like it.

With that being said, the alpine website says this subwoofer needs around 1.00-1.25 ft3 sealed according to there specs. People have told me I am actually starving my woofer of space it needs to be louder, If I made the box 1ft3 or 1.25ft3 would it be louder? and if so which one would be louder than another 1 or 1.25?

My box design was a wedged truck box for my single cab truck

Top depth 6"

Bottom depth 9"

Width 29"

height 14"

CURRENT SIZE

top depth 5"

bottom depth 7"

width 22"

height 14"

or smaller

Any input is appreciated, thank you guys!

Click to read more...

 

[chillin 10+ year member]

If you have room to make the box ported it will be much louder and if tuned right will hit lower which will give you that breathtaking feeling

 

[Qexler 10+ year member]

Single cab ranger, the subwoofer is mounted inverted in between the seats... I would love a ported box but theres not nearly enough room

 

[E2theloc 10+ year member]

yeah a bigger box would be louder. make sure its ported too! depending on how much power the sub is getting will effect which box will be louder between the 1 or 1.25. id go with 1.25 tho and give it recommended power. those subs can take a beating, they are almost noob proof

 

[E2theloc 10+ year member]

aero port bro! thats how your gunna have to go. trust me your gunna be love the differnce

 

[Qexler 10+ year member]

But isn't a 1.25 ft3 box far too small for a port?

 

[jake760 10+ year member]

Is 29" as wide as you can go? Get that box wider so you can fit 2 cubes net, then go with a single 4" aeroport. You will be amazed at the difference over sealed.

 

[RAM_Designs 5,000+ posts]

But isn't a 1.25 ft3 box far too small for a port?

Yes, but I'm sure you can fot more than that behind you seats. What kind of dimensions do you have to work with for a wedge box spanning across the cab?

If you're going to stick with sealed, a larger box gives you better low-end extension, but reduces the amount of power the sub can physically handle...ie: it'll move more with the same amount of power than in the current .75ft^3 box you have now.

 

[Qexler 10+ year member]

Rangers have speakers sticking out the back wall. 29" wide is speaker to speaker

I would love to fit a ported box back there I just dont think one will fit. unless the port is like 5 inch diameter and 25" long lol

 

[Qexler 10+ year member]

would 1.8 ft3

30" wide

9" bottom depth

6" top depth

20" height

3/4" mdf wood

with a 4" pvc pipe as a port coming from the top 14" long tuned to 33hz be loud and not sound bad?

And use poly fill to make up for the .2 ft3 I am missing.

 

[jake760 10+ year member]

Unless my math is wrong, with those dimensions you are actually looking at ~1.5ft^3 net volume (assuming you will mount the sub inverted). On the small side but it would work. Also use an aeroport instead of pvc unless you want a lot of port noise.

 

[Qexler 10+ year member]

according to the 12volt website wedge box calculator

30" wide

5.5" top depth

20" height

10.5" bottom depth

4" diameter port 13" long

would be 1.98ft3

33hz

Correct? would this be a lot louder than my current setup?

 

[RAM_Designs 5,000+ posts]

Yes, but it's still not optimal.

 

[Qexler 10+ year member]

I ended up having to use a 3" diameter port.

According to the 12 volt calculator...

Box calculations

20" height

30" width

5.5" top depth

10.5" bottom depth

1.98ft3 with polyfill

3" diameter port

7" long port

this should work fairly well with alpine mrp-m500 amp with type r 12?

 

[Qexler 10+ year member]

I ended up having to use a 3" diameter port.

According to the 12 volt calculator...

Box calculations

20" height

30" width

5.5" top depth

10.5" bottom depth

1.98ft3 with polyfill

3" diameter port

7" long port

Port will be outside the box, not inside.

this should work fairly well with alpine mrp-m500 amp with type r 12?