Jump to content
Billy Jack

JL 13w7 box for best spl how many cubic feet

Recommended Posts

54 minutes ago, Billy Jack said:

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

but I'd never say that nor recommend that.

Share this post


Link to post
Share on other sites
26 minutes ago, Billy Jack said:

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

Yes, first hand.  Still no idea what you want.  Spending $100 on the fat box would be a serious waste of time, there is no cheating Physics.  It is really rather easy to model and figure out the differences.

No one on here hates on JL, just on the way you are asking something that is atm unanswerable.

Share this post


Link to post
Share on other sites

I wasn't talking about you jcarter I was referring to M5's comment about JL posted its specs for people like me and how I was unwilling to even try when I litterely just agreed and said yes I'm gonna plug the numbers and see. Dude just sounds like he loathes me cause I wouldn't toss $500 worth of equipment in the garbage and go buy a active front stage when he suggested it.  

Share this post


Link to post
Share on other sites

I never suggested you run active.  No way, no how.  That would be a bad idea.

I am trying to help you, you just don't really want help.

Share this post


Link to post
Share on other sites

All I asked is, if manufacturers suggest smaller boxes for obvious reasons or if it was just a rumor or is it in fact better to build a little bit bigger to get more output and make more of your available power.  Doesn't seem to be a impossible question to answer. I was mostly looking for some advice from somebody more knowledgable then me.

Share this post


Link to post
Share on other sites

Not all manufacturers act the same.  There are no "obvious" reasons for a smaller box as well.  The "knowledge" you are basing that on isn't based on fact.  If you want advice, that is easy.  Explain what you want to improve and why and we can help.

Share this post


Link to post
Share on other sites

I already did my man several times I said I wanted more output (spl). And the reason I said obvious reasons is I have heard they do it to give their subs greater power handling and make it seem as though they do best in small enclosures to sell more units. You answered one of my questions you said that wasn't based in fact so can I assume their recommendations are actually for optimal output while still sounding decent. I do know they say the spec ported box will gain 3-4db over the sealed box. Now all I need to know is will a larger then recommended yield more output and make better use of the power I have available. Doesn't have to be an exact mathematic equation just a ballpark guess would be fine. 

Share this post


Link to post
Share on other sites

You have heard this and heard that. They say this and they say that. You seem to be taking it with a grain of salt, which is good with most big box companies marketing strategies. Something I have noticed after being on this site for a while is that the seasoned members don't spout crap and hearsay. The newer members that do, typically learn fast or don't last long and move on looking for someone else to confirm their idea/plan/belief/etc. Asking questions is how we learn, just don't get upset if you don't like the answer.

Taking a few minutes to install winisd and enter driver parameters isn't exactly a time to jump for joy, but plugging in for different box specs afterward can teach you a lot. Enter you current box specs since you know how that sounds, then enter your new desired box specs and see what changes. More or less output? Peakier? Flatter? f3?

You just want a ballpark guess? Yes, a bigger box will be louder. Now what did you just learn? Nothing. How do you even know I am right? I don't even know if I am right, but you wanted a ballpark guess.

Help us to help you. You wont receive a spoon-feeding here, but you will probably learn something. I know I have.

Share this post


Link to post
Share on other sites

Fair enough.

Share this post


Link to post
Share on other sites

Looks like I'm going with 3 cubic feet tuned to 33hz. According to the program that seems to be my best middle ground. Loud but still musical. 

Share this post


Link to post
Share on other sites
Just now, Billy Jack said:

Looks like I'm going with 3 cubic feet tuned to 33hz. According to the program that seems to be my best middle ground. Loud but still musical. 

Why do you say that?  What program, what did it "say"?

Share this post


Link to post
Share on other sites

Well I used a box calculator and 3 cubes and 33hz was the best for spl I could get on the graph. That's after displacement  and bracing.

Share this post


Link to post
Share on other sites
11 hours ago, Billy Jack said:

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

There is no JL hate here. We all know they make very good products.

The W7 is a good sub.

I understand it might be frustrating, because you wanted answers we can't give you !

Build your ported box, tune to 34 Hz, with the volume you want/can, and have fun !
It will be much louder than sealed.

If you don't like it, build another box,

and so on !

Good luck.

Share this post


Link to post
Share on other sites

Going to be hard to get 6 cubes net in a trunk

Share this post


Link to post
Share on other sites

Going to be hard to get 6 cubes net in a trunk

Share this post


Link to post
Share on other sites

Maybe, but Dodge makes some monster trunks.  I bought a Challenger over a Camaro or Mustang in part because the trunk was HUGE and the backseat had leg room for the fam. 

 

Share this post


Link to post
Share on other sites

from past experience the W7 sounded bottom heavy and mushy past 3cf and jump's the nest with out a SSF.....  

I was running a Crown BPX 2200.1 with the testing

nice sub but be carefull with clipping the amp...they don't like that very much and they manifest motor noise

when the gain is turned too high

 

personally I classify the W7 as a SQ sub...

it's loud but if your goal is just loud for the money you can do better with a sub that can handle much more abuse

Share this post


Link to post
Share on other sites

double post

 

 

Share this post


Link to post
Share on other sites
44 minutes ago, SS Teacher said:

Maybe, but Dodge makes some monster trunks.  I bought a Challenger over a Camaro or Mustang in part because the trunk was HUGE and the backseat had leg room for the fam. 

 

I could barely fit my 3.5 cubic foot enclosure for a 15" in my friends Challenger, trunks arent that big to me. 

Share this post


Link to post
Share on other sites
44 minutes ago, SS Teacher said:

Maybe, but Dodge makes some monster trunks.  I bought a Challenger over a Camaro or Mustang in part because the trunk was HUGE and the backseat had leg room for the fam. 

 

I could barely fit my 3.5 cubic foot enclosure for a 15" in my friends Challenger, trunks arent that big to me. 

Share this post


Link to post
Share on other sites
7 hours ago, Billy Jack said:

Well I used a box calculator and 3 cubes and 33hz was the best for spl I could get on the graph. That's after displacement  and bracing.

Should play some more then.  

Share this post


Link to post
Share on other sites
7 hours ago, Billy Jack said:

Well I used a box calculator and 3 cubes and 33hz was the best for spl I could get on the graph. That's after displacement  and bracing.

Should play some more then.  

Share this post


Link to post
Share on other sites

I have a 13.5 cubic foot trunk so yea it will be tight if it even fits but I'm gonna use every inch for the box. Like I said the trunk openings are small so I may have to build it in place to use all the available space. 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

    1. Recent Topics

        • 1 comment
        • 36 views
        • 3 comments
        • 62 views
        • 1 comment
        • 73 views
        • 33 comments
        • 7,948 views
        • 3 comments
        • 136 views
        • 402 comments
        • 35,184 views
  • Similar Content

    • By Blackink
      Getting rid of all my car audio equipment. Prefer to sell the big subs and amps locally in southern California, but I'll ship. Up for grabs:
      P.S. Also giving away for free 50sq ft of RAAM BXT II sound deadener ($175), 15ft of KnuKonceptz 4 gauge ($15), 13ft of Trystar 1/0 gauge ($25) to buyers while supplies last.
      ***(2) BNIB SOUND SOLUTIONS AUDIO SSA ZCON 15" 2250 RMS D1*** These are top of the line daily driver/competition subs. Never been used or plugged in and in original packaging. $375 each shipped.





      ***(2) DC AUDIO LEVEL 4 XL 15" 2000 RMS D1*** Beastly sub with clear lows and clean sound, great as a daily beater. Ran for only a year on upgraded electrical- ho alt, 2 batts, big 3. $275 each shipped.



      ***AUDIOPIPE AP30001D SUPER VALUE CLASS D MONOBLOCK*** Used for a year on an upgraded electrical system with a 275 amp alt, 2 batts, and big 3 pushing a pair of DC Level 4 XL 15" subs. $190 shipped.


      ***ATOMIC AT-5000.1D MASSIVE POWER CLASS D MONOBLOCK*** Underrated and stable at 1 ohm and can be used at .5 for music. Will burp at .25 ohm and heard people burping from .135 ohm. Beastly amps. $575 shipped.


      ***JL AUDIO HD600/4 SEXY 4-CHANNEL*** Bought in very good condition  to use with an sq system that I never installed so they've been sitting around. $400 shipped.




    • By Second Skin
      The awesome guys at Colorado Car Audio just finished a sweet Dodge Ram 3500 Pro Master Van build with full sound and heat insulation along with a stereo upgrade and the work is very nice!!!
      They applied Spectrum and Damplifier Pro CLD to all of the metal to kill vibration noise and help with heat transfer through the metal. They used Luxury Liner Pro MLV+CCF next to block out unwanted airborne noise and thermally insulate the walls. And they used Mega Zorbe Hydrophobic Melamine Foam to absorb sound and thermally insulate the roof of this huge van!!!
      When the proper layers are applied to the correct locations, a huge difference in noise level reduction can be achieved. Setting the stage for a nice and clean platform for your stereo to perform in a much more enjoyable environment....especially with these tin can sprinter vans....treating them makes a HUGE difference in noise comfort levels. 
      Thank you guys for the awesome work and pictures. Thank you for insisting on high-quality Second Skin products for all of your builds. #TeamSecondSkin #SecondSkinUSA #SecondSkinAudio #SecondSkinForTheWin

      Spectrum Liquid Sound Deadening 

      Luxury Liner Pro Mass Loaded Vinyl with Closed Cell Foam infused


      Mega Zorbe Standard Hydrophbic Melamine Foam

      Damplifier Pro


      New Kenwood Touch Screen Head Unit

      Upgraded Stereo System

    • By koodo
      I am looking for advice on which 12" sub to buy, at the moment I am looking between the 12W7 and the 12" AA Havoc.
      Unfortunately, quality subs are fairly rare here in Australia, so I haven't listened to either (have listened to W6 and liked the sound of it).
      My current situation is a 10" Polk MM, mounted in a custom box I built, sitting on the center of the rear seats (in an Isuzu pickup truck so very limited space) but I will build a bigger box for the 12" and place it on the seat behind the drivers seat.
      For me to import either from the US will make the price very much the same, so that isn't really a major factor.
      I am open to suggestions of other subs too, around this league but I would also prefer to not go much over the 1200W RMS.
      I listen to basically anything with heavy bass and some dubstep depending on the mood hahah.
      Cheers
    • By DaVibe
      Without sounding like a complete douche and "Oh, I have so much audio equipment ..." I think everyone knows there's a lot of good pieces out there on the used market. I've got JL w7's and my share of 4-channel amplifiers.
      My question is about the w7, but any car audio equipment for that matter ...
      I know next to nothing about home audio, other than I like it and I'm sure I'll go down this route as I get older (mature / family). In this situation, is it worth holding onto these pieces and trying to make something of it? Or just go on as I would and purchase proper home audio pieces when the time comes?
      The only reason I ask is it would be silly to spend $500 on a 300w home subwoofer when I have a 750w w7 that has home applications as well. And 4 Channels, besides the ghetto look in your living room, could probably run a set of speakers I imagine.
      Thanks for your help. I just don't want to sell off all my equipment (in the process of) and then regret it in 2 years time.
  • Recent YouTube Posts

×