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http://cgi.ebay.com/JL-Audio-12W3v2-...QQcmdZViewItem

i just bought that sub

now......i need a better box than the one i have


http://cgi.ebay.com/NEW-SINGLE-12-IN...QQcmdZViewItem

or

http://cgi.ebay.com/12-inch-CAR-BAND...ayphotohosting

 
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try to find the manuel for it and enther build the box or take it to a audio shop to build one for u

 
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Yea...I'd go for that. Plus, you don't want a sub with that kind of power behind plexy glass(however you spell it) because it distorts the sound. I'd go with a simple sealed or ported box for a w3

 
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i already bought the black one....what do you mean it will distorts the sound?

 
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yeah wut do u mean dawg

 
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Bandpass boxes suck ***. Everyone I've used seems to hit really hard at one freq. and kinda rolls off everywheres else. They're pretty shitty IOW. Get yourself a sealed box or a slot-vented box. They sell them on eBay. I have a feeling you're only getting a plexi for the looks!

 
Rep Power: 329

Pull the spec sheet and build one to suit the TS parameters the best. This will be the most effective method or building a great sounding box.

Here is JL's support site:
http://mobile.jlaudio.com/support_pages.php?page_id=130
They can tell you the most effective box to build with your sub.

Box type comparison:
http://mobile.jlaudio.com/support_pages.php?page_id=147

Box construction techniques/tips:
http://mobile.jlaudio.com/support_pages.php?page_id=164

Bandpass boxes have their place. The ported front chamber acts as a low-pass filter which acoustically limits the high- frequency response of the subwoofer system. Without adequate midbass the system's response will sound muddy. The name is explainatory as to what the box does. It allows a certain band of frequencies to pass into the listening area. They are more efficient, performance-wise, in terms of bass extension, which aren't possible in conventional designs. One characteristic of bandpass enclosures which is universal is that they exert greater control over cone motion over a wider frequency band than conventional designs.

The drawbacks, however, technically speaking of course, is that because the cone isn't moving as much because of forces limiting the excursion doesn't mean that the motor isn't working as hard to move it. That resistance to motion can be hard on your speakers, causing you to fry them before you realize that you're frying them. By the time you realize it, it's to late, and you've ripped your speaker apart at the glue/seams, literally speaking. You have to choose the right amount of power for the sub and set the gains accordingly, and carefully to prevent you from tearing the sub apart and provide long term reliability.

This doesn't mean that bandpass boxes are inferior, because no box is inferior to another type. There is no magic box, or perfect type of box. Everyone has their positives, adn every one has their drawbacks. People that say that one box is superior to another really have no leg to stand on, as if there were a perfect box every competitor would run the same gear with the same box.

JL recommends single-reflex bandpass enclosures for their subs. They offer the best combination of reliability, transient response, and enclosure size being reasonable. I will say this though. Bandpass enclosures are picky, and they are driver sensitive. A prefab box for one sub may not work at all with another of the same size. They really need to be designed for the sub.

I pretty much paraphrased the key points from JL's site about bandpass for you. Should you feel the need to read all of it, you can find it here:
http://mobile.jlaudio.com/support_pages.php?page_id=151

Here is their enclosure type tutorials:
http://mobile.jlaudio.com/support_pages.php?page_id=148

Hopefully that helps. Bandpass designs aren't inferior, they are picky, and easier to tear your equipment up with, but they also can make your sub perform phenominally, in terms of SPL especially. Get what you want and what suits you and your listening tastes, as you're the one going to have to listen to it day in and day out. There is no right, or perfect answer.

 
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both look ok be careful of ebay thou

 
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ey, i have the same sub too. the jl w3, iunno if its loud though cuz i havent put it on tha trunk yet. is it gonna be loud u guys??

 
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oh ya.....w3v2 is insanly loud, depends on the amp too. my cuzzin had 3 w3v2 with a 1000watt amp and he wasnt able to go past -5 on the headunit or something would literally crack.

 
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Wow they rape you on shipping.

You should have taken the 15 min drive down to downtown Los Angeles and bought the same one for the same price minus shipping.

 
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yeah man...i duno where in downtown tho thats the thing...i woulda done that if i knew exactly where.

 
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If you drive around you'll hit the "electronics district."
Somewhere around Broadway and 3rd Street.
You can tell because just about every shop have strobes behind their windows to get your attention.

Just go in, look around, find what you want, then bargain.
If you don't like the price go on to the next shop.
I'd bring a tape measure to get an idea of air space since the workers don't know.