PDA

View Full Version : Need help with a box



joker4096
04-23-2009, 04:50 PM
I have a 99 honda civic hatchback and i want to run a 15" sub at around 1700 watts or so. I understand that i should use a ported box and i want to build it myself or have someone do it for me. Probably will be a RE SX dual 2. The max dimensions would probably be 29 wide, maybe 20 depth and 15-16 height. i might be able to go higher if i remove the cargo cover. Which way should i build it, subs up, port back? probably going with a slot port

DNick454
04-24-2009, 09:32 AM
For a hatchback, yeah... you'd want subs up port back. For a 15" SX for daily music purposes, I'd say something around 3-5 cubes around 30-35Hz. Also, 1700 watts is a bit much for a SX, they're rated at 1000W RMS, so unless you plan on tuning high and doing burps for competition use, I definitely would watch your gains and sub excursion the first time you play it.

joker4096
04-26-2009, 04:13 PM
i was thinking now of going with 2 12's or would the one 15 be louder? Should i do a box like in your sig DNick454?

thegreatestpenn
04-26-2009, 04:17 PM
you can do wider than that in that civic. you should be able to do 36" wide between the lid bars, you'll just have to start at an angle when you go to put it in. and you can do 16" height

joker4096
04-26-2009, 05:01 PM
its a hatchback, that is the maximum width if i do not cut the rear plastic panels

thegreatestpenn
04-26-2009, 05:02 PM
oops, my bad missed that part. you'll get very loud in that car btw. my friend has one, he's always louder than my trunk civic no matter what I throw in it

joker4096
04-26-2009, 05:45 PM
lol i love these cars, easy to get loud with minimal equipment

406er
04-27-2009, 12:27 AM
For a hatchback, yeah... you'd want subs up port back. For a 15" SX for daily music purposes, I'd say something around 3-5 cubes around 30-35Hz. Also, 1700 watts is a bit much for a SX, they're rated at 1000W RMS, so unless you plan on tuning high and doing burps for competition use, I definitely would watch your gains and sub excursion the first time you play it.

3-5 cubes. thats pretty broad. and have you have played with RE subs. pretty much the whole line up sans the RE RE can take 75%-100% more of there rated power.

to the OP, due to your power on tap, go for 3.5 to 4 cu ft. tuning from 30-34 for fatest bass. as Dnick said, sub firing up, port point back ala CRX

406er
04-27-2009, 12:29 AM
i was thinking now of going with 2 12's or would the one 15 be louder? Should i do a box like in your sig DNick454?


a pair of SX 12s?? tough call. more cone area with the 12s, but less then optimal power going to each, VS less cone area but 75% recomened power. i think i would do the 15!

joker4096
04-27-2009, 05:17 AM
i am willing to upgrade the electrical a bit and run 3k watts or so, just fitting 2 amps will be difficult, so i might just keep it at 1 that can put out some good power. For the 2 12s, would that box specs be sufficient?

Mike465
04-27-2009, 09:31 AM
If you need a box built PM me for a quote