JL 13w7 box for best spl how many cubic feet

[Billy Jack 145]

I need to know what the best size box would be for a JL 13w7 for spl. I have always heard most manufacturers give smaller then optimal size requirements just to sell subs and to lower power handling so they have less warranty claims. Looking for anybody who has experience with these subs who can tell me what's the best cubic feet to get the max out of these subs. I'm running them off the JL HD1200/1's in a 2013 Dodge Avenger R/T. Pretty big trunk just small opening may have to build box in place. I want to run ported for more output but still be musical. Also need to know tuning.

[///M5 2,833]

SPL and musical are two polar opposites.  Have to choose your compromise.

ie, the loudest setup is the peakiest which is the opposite of musical which has a flat response.

[Billy Jack 145]

Well I meant like not just a burp box like I'm gonna be playing music on it not just sign waves for competition guess I should have said that my bad. How many cubes and what tuning would you recommend to tear the roof off this dodge.

[///M5 2,833]

Again tear the roof off ia a fart canon, playing music a flat response.  What compromise do you want?

[frogcase2002 393]

Seems like he wants it to sound good on music and get decently loud.  I would tune around 33-34 . Not forsure what they recomend on enclosure size 

[SS Teacher 177]

A 13W7 on 1200 watts should be very loud unless you're doing something wrong.  If I were you I'd lean toward the musical side and go for a flatter response curve.  I just hooked my 10" XCON, it's in a large ported box and it's loud enough on 500 watts and sounds GREAT, but "loud" is such a relative term...

[Billy Jack 145]

I know what JL recommends but I have always heard that it's better to go a little bit bigger for more output. Just asking the experts what there take on the go bigger rumor. Right now I have them in the factory prowedge box's but only one would fit because of how tall they are so I'm gonna build a dual slop port enclosure for them both. So is it true your better off to go bigger or is that just internet b.s? I probably can't go to much bigger but maybe a little. 

[Billy Jack 145]

Ow yea it is loud but I'm hard of hearing and just want more spl then sq. And it will be 2 13w7 on 2 HD1200/1's so 2400 watts. Right now it is just one sub and one amp but as soon as I get the box built and beef up my electrical I'm gonna run them both.

[jcarter1885 995]

Measure your max dimensions and go from there. Use a box building program such as Torres or Winsid

[jcarter1885 995]

Measure your max dimensions and go from there. Use a box building program such as Torres or Winsid

[Billy Jack 145]

Ow that's exactly what I'm gonna do, but I was just wondering if I should go a little bigger if possible, or just build it to JL's specs. Would a bigger box and slightly higher tuning give me more output? Thanks for the reply. 

[jcarter1885 995]

Thats hard to say honestly but it could. What are you meaning by bigger, do you have an idea of how many cubes per foot your shooting for?

[jcarter1885 995]

Thats hard to say honestly but it could. What are you meaning by bigger, do you have an idea of how many cubes per foot your shooting for?

[///M5 2,833]

What do you have them in now and what do you want to improve?

The only way anyone can help you is to model a 13w7...which would be best if you did yourself.

To me it sounds like you are exactly the customer JL posts its box recommendations for.  If you are unwilling to do the above then follow their recommendation.

The only way to learn what sounds better is to reflect on what you have so that when you make a change you know what caused it.  The box here is like the rears.  Don't just unplug them, but learn why/how.  Same in the box.  You have an opportunity to make yourself way more knowledgeable, personally I'd take it.

[Billy Jack 145]

Well JL recommends 2.35 but I was thinking 3 cubes a piece. And maybe going a little higher on the tuning.

[Billy Jack 145]

Ow and like I said before I have them in the sealed JL manufactured pro wedge box. It's not very big at all just tall mostly. My box will be shorter and a lot deaper.

[Billy Jack 145]

32 minutes ago, ///M5 said:

What do you have them in now and what do you want to improve?

The only way anyone can help you is to model a 13w7...which would be best if you did yourself.

To me it sounds like you are exactly the customer JL posts its box recommendations for.  If you are unwilling to do the above then follow their recommendation.

The only way to learn what sounds better is to reflect on what you have so that when you make a change you know what caused it.  The box here is like the rears.  Don't just unplug them, but learn why/how.  Same in the box.  You have an opportunity to make yourself way more knowledgeable, personally I'd take it.

A simple yes a bigger box will probably give you more output or no it want help would have sufficed. 

[StreetLegal 119]

Use winsid, model the set up you have now , model jl ported specs, and them play around with box size, and compare the three responses and see what fits your needs.

Edited May 25, 2016 by StreetLegal
typo

[StreetLegal 119]

Use winsid, model the set up you have now , model jl ported specs, and them play around with box size, compare the three, responses and see what fits your needs.

[Billy Jack 145]

[Billy Jack 145]

Yes that's the plan street legal, but I was just asking if anybody  had first hand experience with the w7's and  knew if the JL specs where best for output (spl) or if I would get a better number from going bigger. I know fat box has a spl box that some say hits like crazy but there is no way to get the specs without buying the $600 box. Just thought somebody on here could give me some insight no big deal though I will figure it out myself. Maybe if I was asking a question about my crescendo amps and sundown subs I would get a little better answer on this site. Probably the JL hate I'm getting.  Lol

[jcarter1885 995]

Nobody is hating on JL, I dont care what you run. You get help then bitch about the help you want, man up and chill with the pettiness.

 

Car audio is all about trial and error, either with the pen and paper method or building multiple boxes. What performs well in one box and in one car might not in another and so on. There is a build on SMD with 2 JL 13s i believe, doing 150 out of the trunk. It took a whole lot of trial and error, diffferent boxes and different ports. You want to be spoon fed, we told you at least try winsid and see what it says. Yes in car can be different but it will give you a starting point.

 

Yes a ported enclosure will be louder than you current sealed enclosure, I have now experience with the 13w7 or a proper custom box enclosure for one. Search the web or plug in some numbers. 

[jcarter1885 995]

Nobody is hating on JL, I dont care what you run. You get help then bitch about the help you want, man up and chill with the pettiness.

 

Car audio is all about trial and error, either with the pen and paper method or building multiple boxes. What performs well in one box and in one car might not in another and so on. There is a build on SMD with 2 JL 13s i believe, doing 150 out of the trunk. It took a whole lot of trial and error, diffferent boxes and different ports. You want to be spoon fed, we told you at least try winsid and see what it says. Yes in car can be different but it will give you a starting point.

 

Yes a ported enclosure will be louder than you current sealed enclosure, I have now experience with the 13w7 or a proper custom box enclosure for one. Search the web or plug in some numbers. 

[jcarter1885 995]

http://www.*****.com/board/topic/173832-audi-a6-trunk-build/

[jcarter1885 995]

http://www.*****.com/board/topic/173832-audi-a6-trunk-build/