32hz tuned ported box help

[Bacovish]

Have a box design from jl for my 10w3. First time obviously. You can see on the left diagram they are calling for a internal port height(sh) of 10.5×1.25. so is this just for the port opening if you will that goes on the front of the box or is this for the whole port channel from end to end??

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[Bacovish]

Think I just answered my own question. With a total box height of 12 using .75 thickness equals 10.5. So the whole port channel would be 10.5 not just the vent. Lol. Took me a sec to see that. Sorry for the new guy question. I have a tahoe so the sub will be pretty far behind me and looking for strictly sound box. I listen to jazz, blues, pink floyd etc.. is ported really the way to go?

 

[Dustin_Kimble]

I'm pretty new to enclosure building too, but since your only using one subwoofer, look into having a transmission line box made since you want to go ported.

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[blazian87 10+ year member]

Think I just answered my own question. With a total box height of 12 using .75 thickness equals 10.5. So the whole port channel would be 10.5 not just the vent. Lol. Took me a sec to see that. Sorry for the new guy question. I have a tahoe so the sub will be pretty far behind me and looking for strictly sound box. I listen to jazz, blues, pink floyd etc.. is ported really the way to go?

You can choose not to follow what the JL site says if you want. I don't see why you can't modify the specs based on your needs. Yes, always subtract the thickness of the wood and anything else you use for bracing when calculating net volume and port size. Usually I think of how much space I'm willing to give up and scale down from there. There's a box tuning program where you can calculate the math of ported boxes within seconds. Download it here Box Tuning Calculator

Since you have a tahoe, you probably can't expect much from a normal 10" sub even when ported because there's so much more air space to fill than a normal sedan. When it comes to sound quality, you can achieve a good sound from ported boxes as long as it was well designed for your needs. Meaning trying to find a sweet spot where you know most of your music plays. If you are worried you are not gonna get enough output from your single 10", then definitely consider a transmission line box as that will give you the widest bandwidth and very good output. Not only does it sound really good with practically every type of music, it's also very efficient with power. You will be surprised what kind of output you get from a single 10". These type of boxes take up a lot of space but with your space, you can fit a nice quarter wave T-line and still have plenty of extra space for groceries and stuff. It's a win/win.

 

[CSCStang]

Tline ftw....53.5 sqin 107.5" port length tuned to fs of 31.49hz.

 

[Papermaker85 5,000+ posts]

second that notion

 

[Bacovish]

Thanks for the replies. I've actually never heard of that type of box before and eager to give it a shot. I'm not real good with math even though they do have calculators. If I give the specs on what I have to work with could I get some help with the design?

 

[mrpep]

Tline ftw....53.5 sqin 107.5" port length tuned to fs of 31.49hz.

CC, if you're willing and have time , I'm looking to build a t-line for a 10" w6v3 JL audio for a Honda Civic 1996 - I currently have a HO JL box but since I built that box for the van using your spec , I see that these customs can go lower and sound better.

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