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View Full Version : (2) 15" sub box build in the back of a 2007 dodge caliber. 7.55 cubic feet. help?



joe913
07-17-2011, 03:37 AM
heres the box i am hopefully plan on building as soon as i can get an okay from someone who knows what there doing haha. i plan on putting it in the back of my 2007 dodge caliber. i have a total of 7.55 cubic feet. the port is 24" X 2" X 6" long. *hopefully* tuned to 33hz. i am new at this, so just need some help on everything. i had something similer to this posted up, but it changed to much *thanks to you guys* that i thought i would start a new thread. let me know what you guys think, if you can give me the "OK" to start the build.

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Digital Designs
07-17-2011, 03:51 AM
You dont have nearly enough port.

joe913
07-17-2011, 03:56 AM
You dont have nearly enough port.

then i am not using WINisd correctly.. haha thats what its telling me for some reason?? any idea what im doing wrong?

Digital Designs
07-17-2011, 04:05 AM
I have never used WINisd before. I use Torres Box Calculator usually which seems to be pretty accurate. Your tuning might be correct but you only have like a little over 6 square inches of port per cube when you should be going for something like 13-17 square inches of port per cube.

joe913
07-17-2011, 04:37 AM
okay okay, i think i figured out what i was doing wrong hahah the port is 24" X 4" X 24" long. tuned to 34 hz
i have 6.3 cubic feet left, just enough for 15" subs that need a min 3 cubes. i know theres a few out there haha okay, so what about now? haha

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T.I.K.
07-17-2011, 04:45 AM
That is the most jacked up, cockameme lookin' design I've ever seen, it's way too complicated, and it doesn't have to be, especially for being a simple ported box.

I'd just bite the bullet and get a box designed for you by someone who's got lots of experience

joe913
07-17-2011, 04:49 AM
That is the most jacked up, cockameme lookin' design I've ever seen, it's way too complicated, and it doesn't have to be, especially for being a simple ported box.

I'd just bite the bullet and get a box designed for you by someone who's got lots of experience

the only reason its shaped like this, is because if i went with just a rectangular box, i would have close to 4 cubic feet too use because the shape of my trunk and hatch. this way im getting 7.7 cubic feet of space instead of ~4.

HelloImBob
07-17-2011, 09:31 AM
doesnt look easy to fit in the trunk. I believe I have the same trunk as you with a 2007 charger. I went with (2) 12s a good 270amp alternator and a lot of power becaues I could barely fit one 15 in the trunk with like 5.5 cu after displacement but that box got stuck going in the trunk so I had to use the router to take off all outside edges to 45s and a wood rasp to wear off more material in certain places to wedge it in the trunk. dont forget to take your weatherstripping off the trunk before wedging your box in so you dont tear it up.

I would try for (2) 12s or (1) 18 unless you want an undersized dual 15 box. My next box will be for (1) 18 it might be a little undersized but Ill make up for it in power. going to try to upfire from the back of the trunk and port forward into car with seats down.

Digital Designs
07-17-2011, 01:10 PM
doesnt look easy to fit in the trunk. I believe I have the same trunk as you with a 2007 charger. I went with (2) 12s a good 270amp alternator and a lot of power becaues I could barely fit one 15 in the trunk with like 5.5 cu after displacement but that box got stuck going in the trunk so I had to use the router to take off all outside edges to 45s and a wood rasp to wear off more material in certain places to wedge it in the trunk. dont forget to take your weatherstripping off the trunk before wedging your box in so you dont tear it up.

I would try for (2) 12s or (1) 18 unless you want an undersized dual 15 box. My next box will be for (1) 18 it might be a little undersized but Ill make up for it in power. going to try to upfire from the back of the trunk and port forward into car with seats down.

Calibers are hatches, by the way. I doubt they have the same "trunk" as your Charger.

http://images.dealerrevs.com/gallery/photo.php?id=48939367

=/=

http://images.thecarconnection.com/lrg/2010-dodge-charger-trunk_100234718_l.jpg

sacsking916
07-17-2011, 01:25 PM
Calibers are hatches, by the way. I doubt they have the same "trunk" as your Charger.

http://images.dealerrevs.com/gallery/photo.php?id=48939367

=/=

http://images.thecarconnection.com/lrg/2010-dodge-charger-trunk_100234718_l.jpg

You mean to tell me those aren't the same? Lulz

RAM_Designs
07-17-2011, 01:33 PM
Honestly, you'd be better off going with a pair of 12's. Or, you could take out the rear seats and do a monster box.

kingmanbc
07-17-2011, 01:39 PM
I put 2 15's in a cobalt before, it can be done, but with a lot of work. And by the way I would go with a sealed box imo.

winkychevelle
07-17-2011, 01:42 PM
I know a guy that put two re xxx 18s sealed and it sounded good just not on the meter. He eventually just went to 1 18 ported it did better on the meter and moved about as much air. Btw these car rattle like a mofo I'd drop a good bit of change in sound deadener before the sub my .02

joe913
07-17-2011, 06:02 PM
Honestly, you'd be better off going with a pair of 12's. Or, you could take out the rear seats and do a monster box.

I think im going to go with the 15s, more or less just for the bragging rights. they should sound a bit better then equivalent 12s. ive seen 2 12s in a caliber, but i havent seen a ported 2 15s box before in a caliber lol.

joe913
07-17-2011, 06:03 PM
I know a guy that put two re xxx 18s sealed and it sounded good just not on the meter. He eventually just went to 1 18 ported it did better on the meter and moved about as much air. Btw these car rattle like a mofo I'd drop a good bit of change in sound deadener before the sub my .02

haha i have 2 12s in a sealed box right now in mine, and it already rattlse a bit lol. im defitnally going to invest in some kind of sound deadener somewhere down the line lol

joe913
07-17-2011, 06:23 PM
i have a feeling that im going to unlimited amount of crap for this, buuuuuuttt, what do you guys think of these subs? im just trying to get good subs for cheap. dont really care about brand name, as long as it sounds good.. lol what do you guys think?


http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=390313842228&ssPageName=STRK:MEWAX:IT

winkychevelle
07-17-2011, 06:42 PM
they arent gonna give you what you want. id suggest 2 sundown z15s since they like smaller boxes idk bout that small im using 12s atm and they seem to do ok at 2cubes a piece in 1200 a piece

joe913
07-17-2011, 07:14 PM
they arent gonna give you what you want. id suggest 2 sundown z15s since they like smaller boxes idk bout that small im using 12s atm and they seem to do ok at 2cubes a piece in 1200 a piece

yea, i was looking at the sundowns, but there like 200 PER sub =/ im up to 400 without an amp =/

rosshimself13
07-20-2011, 12:38 PM
you not even in the right ball park on this... you want to brag and dont want to spend 200 on a sub? if you arent willing to pay then you probably shouldnt even try to play the game.. CA is expensive, and in my opinion if you buy cheap equipment then your probably going to regret it unless your expectations are low.. you say you have around 4 cubes if you use a simple design, perfect for a single 15 that you could probably find a very good used one on here that would handle about 3k without a problem... again this is my suggestion and i dont think your going to listen, but if you built a proper enclosure for a 15 and had a quality sub with a good amount of power you will be louder than 2 low powered subs that wont last...

joe913
08-03-2011, 08:54 PM
you not even in the right ball park on this... you want to brag and dont want to spend 200 on a sub? if you arent willing to pay then you probably shouldnt even try to play the game.. CA is expensive, and in my opinion if you buy cheap equipment then your probably going to regret it unless your expectations are low.. you say you have around 4 cubes if you use a simple design, perfect for a single 15 that you could probably find a very good used one on here that would handle about 3k without a problem... again this is my suggestion and i dont think your going to listen, but if you built a proper enclosure for a 15 and had a quality sub with a good amount of power you will be louder than 2 low powered subs that wont last...


well i built the box design that i had pictures up of(basically, tweaked it a bit more). i got 4 10" pioneer subwoofers for it, have 2k watts, and it hit way harder then my friends professionally built 15 could ever wish to hit. nad ive got about 280 in it. not 2grand.

pro-rabbit
08-03-2011, 09:24 PM
well i built the box design that i had pictures up of(basically, tweaked it a bit more). i got 4 10" pioneer subwoofers for it, have 2k watts, and it hit way harder then my friends professionally built 15 could ever wish to hit. nad ive got about 280 in it. not 2grand.

Um, I guess congrats. However, just because a shop built an enclosure does not make it "professionally built". Many shops will pass of prefab enclosures as custom. I'm not saying your system is bad or worse..just saying it is hard to compare setups by word only. Maybe you should get your setup on the termlab and see what kind of numbers your doing. Never know could be doing better then most on here may think.