sub box for a kicker 15 l7

it all depends on the power your pushing if memory serves me the 800.2 pushes 800 at 4 ohms bridged for that amount of power to one sub i reccomend going like 4.5 at least

 

larger the better depending on power levels. the sub, if im right, handels 1000 rms 2000 peak correct? and operates at 4 ohms pending on wireing? therefore you underpowering it. full rms power for full volume size. since ur running it by 200 under id use something from like 4-5, 4 on the small side 5 on the high side.

edit:

in answer to the rest of your Q. i dont have this sub and without actually having it i cant say for sure. when it comes down to it car audio is all really by ear, not by numbers. useing numbers however can be used to determine what probably will sound good. using that logic id say that would work best.

 

Absolutely. And if you don't believe him, put the speaker specs in any speaker box program ( WinISD, or BassBoxPro ) and watch what happens as size increases. I would stay within the recommended size and lean toward the larger 6 cu. ft.

 

solobaric 12 inch
3.65 cubic feet before port displacement
2.25x13.25x22 inch slot port

Got this from a dude on the 12 volt who is sponsored by kicker...he said this should pound pretty hard

 

Now that looks and sounds reasonable, I would still go closer to 4 cu. ft.
That recommended port has a cross sectional area of 29.8 cu. in. Two 4-inch round ports would have a cross sectional area of 25.1 cu. in and take up less space then the slot port. The 5-inch difference in the areas would not cause any problems in vent velocity.

Just more to think about

 

lol as i said figureing it out in my head 4-5 cu!
i amaze myself haha

 

I have a L7 12 inch in a sealed box that came form kicker. .its about 2 feet long and about a foot wide. Pushing it with about 1100 watts from an MTX 942 amp. This thing really hits hard. If you dont have the space for a ported box go with a sealed one. The sound quality is awesome and suprisingly is very accurate.

 

My friend has two 15 L7's in a box we built....it is just a copy of a prefab he found at a shop...Told him I could build a bigger and better box...its only about 2.8 cubes per chamber with a slot port in the center.

Yes its still loud as fack but the lower bass notes suffer a lot...hell we don't even know the vent tuning of the box...I hate prefabs.

 

ported = louder thats their advantage
sealed = better more tight sound

 

umm havent we been?

in my opinion 15s lag and in a hatchback youll hear it more. most will argue that if they lag then why are they used in a stereo comp or at concerts and such and thats becuase it doesnt matter if they lag then but they lag. that said id run 1 12 or better yet 2 10s, because im assuming you dont want to use alot of space putting 2 12s outta the question. again as i said before i prefer sealed over ported, sealed makes better quality sound, ported is just used to make it sound louder. If your running THAT amp and soo hell bent on it why the L7? The fact that you keep asking 12 or 15 leads me to believe you havent bought it yet, so why Kicker why not Diamond or Dynamic or JL?

 

ah, forget about the polyfill.. that's nonsense, use a properly built enclosure, and you'll never miss it. I lean towards a large ported box if you have the room, and the subs can handle it. - the kickers can.

also, a large ported box (properly tuned) will "increase" the efficiency of the sub, meaning that you can get good sound with less power. and those subs are inefficient to begin with. with a smaller enclosure, you have to "push" the subs harder to get the same sound.

if you have the room, go for it.. the kickers sound great in a big honkin box

 

http://www.adireaudio.com/Files/TechPapers/WooferSpeed.pdf

 

Basically look at the woofer you are going to get. In this case you were asking about the Kicker solobarics. You need to figure out how much louder or more efficient the ported box will be versus the sealed one. Some of it will have to do with how the ported box is tuned. If im correct it will only be louder at the frequency the box was tuned at (if im wrong please let me know). From your last post I think you are looking to save space. My sealed box for my 12 inch L7 is quite small and only takes up a small corner of my trunk. I dont think I would build a smaller box and put polyfill stuffing in it unless its a last resort, and I mean last resort. Build the box to match the woofers parameters and you wont be dissapointed.