Please check my sealed Type R box idea.

[YoungBloodM50 10+ year member]

So I built a couple crappy ported boxes, not even close to spec. I just threw them together. It sounds pretty crappy right now. I wanted to try, just for fun, a sealed box. If I don't like it then I will do a better ported box. But I would really like a small box.

Anyway, here is the install: 2003 toyota highlander with 4 ga to a ap1500d.

1 10" Type R D2

And the dimensions I would like to use that I got from here: Speaker Enclosure Volume Calculator

20" wide 12" deep 12" high.

I will use 3/4" mdf.

So will this sound ok? That calculator says it will be about 1.18 cubes before displacement. I am guessing right around 1.1 after displacement.

Better suggestions (for a sealed box) are welcomed.

Last thing, I don't want a squarebox. I prefer rectangular.

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[miska_man 10+ year member]

Definitely too big for a 10" in a sealed box. Type-R 10s want about .6 cubes after displacement of the woofer itself. This is according to the owners manual, which I would have to say is pretty spot on because I made my first sealed box for my Type R according to the manual.

 

[DukeNut 10+ year member]

Alpine's site says 0.5 - 1.0 ft^3 sealed box for the 10, with 0.6 being optimum. As long you set your gains properly (I'd be conservative since the box is larger than recommended, thus less sub power handling). Or you can scale it down a bit (like 12*12*16).

 

[YoungBloodM50 10+ year member]

Awesome! Thanks for the replies guys. So with experience miska_man, how did it sound at .6 or whatever you built yours at? Also, what kind of power were you feeding it?

 

[YoungBloodM50 10+ year member]

oh snap! My Type R is last years model. I was looking at the specs and it says .5 - .8. You still thinking .6?

 

[miska_man 10+ year member]

Well I have a 15" Type R, so I wasn't building a .6 cubed box. I was just saying I built according to what the manual said and I think it came out pretty good. Probably because the Alpine engineers knew what they were doing when testing the subwoofer with different boxes.

But I think the .6 should still be good as long as it's in between.

 

[YoungBloodM50 10+ year member]

Copy that. I will let y'all know how it goes when I am done. Whether or not you guys care.

 

[RAM_Designs 5,000+ posts]

Build it according to what you prefer. Smaller box = less efficient, higher mechanical power handling, weaker low-end. Larger box = more efficient, lower mechanical power handling, and stronger low-end.

 

[RAM_Designs 5,000+ posts]

Build it according to what you prefer. Smaller box = less efficient, higher mechanical power handling, weaker low-end. Larger box = more efficient, lower mechanical power handling, and stronger low-end.