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hdave
09-04-2005, 01:46 AM
hello i just picked up an alpine type r 12

ive got an 05 civic sedan with a trunk thats 36" wide and 14" tall

need box help.


how much cubic ft net should i use?
how much port area?

i want to maximize SPL and still hold decent SQ (tuning of ~32hz is what i want)


also, anyone have any box building techniques, tips and tricks.
- duct tape around sub (i dont understand where to put it)
- rounded corners
-smoother surface than mdf
-etc...

i want to make this a superbox.


any and all input would be greatly appreciated. thank you.

creater
09-04-2005, 10:53 PM
what about the depth of the trunk?

i think u should use the most space available for the box...

joeldirt
09-04-2005, 11:01 PM
what about the depth of the trunk?

i think u should use the most space available for the box...


true.. ^

why don't you tacke a fiberglass enclosure? 32hz is probably my most common tuning frequenciy for everyday use type boxes. 36x14x20 would give you aproximately 4.5 cubes before displacements that should give you plenty of room to work with for yoru type R 12.

hdave
09-05-2005, 12:10 AM
^ that is doable, but i prefer to keep it smaller because i want to still have quite a bit of trunk space.

id say no more than 17" length
by 32hz, i mean anywhere between 30 - 34hz

nissanrider06
09-05-2005, 02:33 AM
dont make a 4.5 foot box for one R maybe 3 cu ft tuned to 34 hz, but talk to the type-r experts

joeldirt
09-05-2005, 03:45 AM
dont make a 4.5 foot box for one R maybe 3 cu ft tuned to 34 hz, but talk to the type-r experts


true. lets assume the box was made properly, with displacement from internal bracing, and four 3" ports, you would end up with a total internal volume of about 3 cu ft.

but he said those dimensions are too large....

hdave
09-05-2005, 08:46 AM
i prefer a slot port. much easier than actual round ports for me.

GTonDubs
09-05-2005, 11:14 PM
tune it at least to 34-36 hz, youll get more SPL, and wont loose out on those lows make the box as big as you wanna make it dont go any smaller than a 3

PhatTonyDeMarco
09-05-2005, 11:18 PM
Whats gonna power this R?

hdave
09-06-2005, 09:08 AM
mtx 81000d

i want to tune a little lower because the amp does not have a SSF.

hdave
09-07-2005, 09:07 AM
hey, im getting the sub in about an hour and a half.

pls someone tell me what to tune to and how much port area?

hdave
09-08-2005, 05:36 PM
hey

i have the sub and no box :(
can anyone please please help me wit hthe box?
tuning? port area? volume? etc...?