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SPL & SQ / Fabrication

Calculations, Concepts, Designs, Theories. All General SPL Or SQ Questions Can Be Discussed Here.

  1. Started by HI LIFE,

    I am trying to plan how I am going to build a box to go in the ex cab of my toyota truck. I am putting 2 Fi Q15's in it. The space I have to work with is 53'' wide 17'' depth and 22'' tall. I was told to use 1 layer of 3/4'' MDF then after the box is done add a 2nd layer of 3/4'' MDF to the outside of the box to help reinforce it, is this right? This is the first box I have build so I just wanna make sure I get it right. But this is what I have come up with so far, how does is this right, the subs call for about 4 cub feet each tuned to around 33.

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  2. Started by shortfuze9,

    I am looking for someone in the Portland area to build a box for me. I am very capable but don't have the tools at the moment. I have the design. It a pwk. For 2 12's with a 6" aero. I don't trust the dealers out here, plus they'd want too much $$$.

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  3. Started by fritosaregood,

    I've looked around for different test tones, i still dont know how to make my own, but i found a site that offers free test tones 10 seconds long. there is a place at the bottom to download a zipped version of all the songs. Stereo, 16 bit, 44,100 KHz 0 db http://www.ronelmm.com/tones/

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  4. Started by ShaneSauce,

    3.7 cubes after port displacement with 48 square inches of port vs 3.2 cubes after port displacement with 56 square inches of port. Fi SSD 15" I know it probably wouldn't be a huge difference but which would get louder? In one you sacrifice air space but gain port space and the other you gain air space but sacrifice port space. So what I'm trying to say is which is more important when figuring loudness?

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  5. Started by icy_chris,

    just started my new build for my fiance's brother the box will be for 2 jl 10w3v3's

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  6. Started by y_d0c,

    Maybe its just me, but, i was just on their website and they didnt have any events posted in Cali....... anyone shed some light on this..

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  7. Started by Koridan,

    I am getting two Maw-15's and I was wanting to put them in a Ported Enclosure tuned to 30hz. But I drive a 1996 Ford Taurus and I'm worried I will come up a little short on Trunk Space. Any Ideas for the box Or do those subs sound good enough in a Sealed Enclosure? Thanks In Advance Guys. ~MadroX

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  8. Started by 1badyukon,

    just bought a 18'' fi bl dual 1 ohm im runnin 2 ohm 2 a 1200.1 jbl.. im installing it in a 96 yukon..4dr. how should i build the box , which way should the sub face ..and port...how many cb ft...thanks..

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  9. Started by frogcase2002,

    looking to do a new box and wanting to know what yall think the best kind of box i sould do if im wanting to seal off my trunk, i have 1 15" zcon on 3000 watts, i was thinking of doing a bandpass where the subs sealed part of the box is where i open the trunk and ported through where my back seats fold down, any questions? sugestions? im wanting to do this because my box now is ported back and sub back and my trunk pretty much opens with the bass and can feel mass air coming out so i know i can get way louder if i seal my trunk off

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  10. Started by mrpowerpunchhx2,

    o.k. i am not happy with the numbers i am seeing from my wall.so my q is can i cut a hole in the back wall and take it in to the trunk or make like a C in the back to make it deeper???i know it will change my vent and tuning.i am not worried about that.

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  11. Started by mwerling1212,

    I am ready to build a sealed box for my single ss rl-p 18, but im not sure which way to face the sub. i have plenty of room on all side. My car is a lincoln towncar if that helps. Also, should i go with the recomended box size of 4 cubes? And one more question, should i only double baffle the front, or should i double baffle everything? Thanks

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    • 5 replies
    • 700 views
  12. Started by BaMF101,

    So, Ive been roaming around this forum to find some ideas on some box ideas for my 2 18" Fi Qs going in a 2000 Chevy Blazer. I listen to mostly rap that go into the low 30hz range and higher so yess this is my daily driver, so Ive designed some boxes of my own to see what you guys think about them. Hereeeee we go... Box Design 1: Separate chambers, 7.25 cu. ft. each after displacements @ 28hz - Subs forward, port forward Box Design 2: Separate chambers, 6.75 cu. ft. each after displacements @ 32hz (I knowww its kinda wicked design but oh well..) - Subs back, port forward Let me know what you guys think!! Thanks for looking :)

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    • 700 views
  13. Started by zyskatr,

    Hey everyone. I'm starting my first build today and the dimensions of my box are going to be around 34w x 18h x 16deep. I wanted to have subs up and port along the bottom of the box facing the trunk (its a hatchback) and doing that would tune it to high. Am I able to put the port in the middle of the bottom or does the port have to be along the whole edge it is on? If it has to be along the whole edge I will probly put in vertically on the back side on either the left or right edge. Please help, this is urgent. I'm going to be starting it in a couple hours. Thanks, Ted

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  14. Started by rumproast789,

    Well, I thought this guy was going to help me out with coming up with the specs to build a box, but he barely replies to my emails. So now I am trying to figure out the specs for a box. I would rather build it due to cost, and have looked at the box builders further down on the site, but they are a little expensive. It will be for an 18" Fi btl, as I'm sure many other people have already asked for help on this. I don't have a limitation really for room for the recommended sizes because I have an SUV. Width about 41" from side to side, and I'll have to go measure the height and depth. I listen to rap. I'd rather have it be sub up, port back, but not a side port unless it…

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  15. Started by QuestionMan,

    Knuconceptz 'Knucar' This guy might have an ssa membership, idk, but has anyone seen this? Everyone says 45 degree angles help airflow, so what would a perfectly round one do? It'd be near impossible to tune if you wanted to port, but if you could, would it actually work? Trust me, i'm not thinking of doing this because i can't make a sphere out of play-dough, just curiousity here.

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  16. hey guys I'm about to start on my new box for the TI and was wanting to put some internal bracing for this box. Does anyone have some good pics of internal bracing, I need some ideas on what to do here. I already have the box plans, just need to get some basic ideas as to where to place the bracing. thx. -chev

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  17. Started by RF-ChipmunK,

    What's up guys, I hope this is the right section. Having trouble figuring how to do my front stage in a 06 Charger. So I wanna see pics if any of you guys have a serious front stage in your Charger Magnum or 300. Also for this who wanna help, front door has a 6x9 which I have looked at and can make adapters for a 6.5 that's no prob. Now the dash has a 3.5, where I can put a tweeter or supertweeter. But that's not really what I want, I don't think a tweeter facing the windshield will sound any good. I have space on the door for a regular tweeter, but j still would like to see others before I proceed. Further notes, I can't fiberglass (would love a pillar tweets and mult…

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  18. any inputs and comments for my box design it will be for 2 10" Chaos it is aproximately 3.23cubic feet gross volume, 2.5 net volume will be tuned at aproximately 33hz will be going into a single cab was done on google sketchup the one on the left is with all the pieces seprate, and the right one is the final product thank you

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  19. Started by subw123,

    Which one do u think will be louder audioque hdc3 15 or t3 audio tss 15

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  20. Started by explosivesound,

    Just starting my build but I need to know about the box. Ive seen sub up port back sub forward port forward, sub up port up. I assume any combo will work but I want to verify. I want to do sub forward port up. IT would be the same as port forward but the port opening would be up instead of forward. So I guess it would sort of be like an L. Thats the best way I can explain. I need the port firing where the rear deck would be and the sub facing forward. The back of the back seat is being removed and replaced with the box. The sub will face forward in the middle, and on both sides the MDF will be foamed and clothed so two (though small) people can fit in the back seat! I don…

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  21. Started by xAndrew225x,

    I have a buddy that got a got a box from another friend for free and we noticed the port area after the turn at the back of the box isn't as wide as the port at the front. The first length of port is 2.5" wide, and the second length is 2". Will this cause any major difference in sound? I'm guessing it will slightly tune it less at 2" than if it was 2.5" in the 2nd length. Example:

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  22. Started by Hell-Razor,

    Im BACK! After being gone for a while traveling the world I have come back to my fellow members / friends / people / dudes / dudettes and folks on the good 'ol ssa forums (good job Mark). I am starting a rebuild once again. I literally blew my old box apart so its time to go bigger, badder and more bracing! I noticed a huge improvement from my 3.5cuFt box to my 4.25cuFt box. I hope to do the same when I hit a 4.75 ish box. I am installing into this box a single DC 15" woofer being powered by a 3500D. Here is what my plan is: BOX: Height: 17.5in Width: 38in Depth: 18.5 CuFt: 5.083 Square Port Volume Internal: 1134 Square Port Volume Displacement: 1144.125 Tuning Freque…

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  23. Started by mrbobian,

    I would like to get a few different tones on a CD or something to play around with, where can I find some? Thanks, Mike B.

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  24. Hows it look? Not Allowed To Use Image Extention Click here to View Enclosure! http://chronicenclosures.com/subbox.bmp System Build: 2x Incriminator Audio Lethal Injection 12 Inch Woofers Daul 2 Ohm Voice Coils 1x JL Audio 1000/1v2 Slasher Amplifier 1200HC Kinetik Battery Stock Battery 0 Gauge "The Big Three" Capacator 1 Farad Enclosure Specifications: 3/4" MDF Material Height: 25 3/4" Width: 36" Depth: 15" Gross Volume: 6.334 Volume Displacement: Port - 1.396 Cubic Ft Woofers - 0.22 Cubic Ft Bracing - 0.056 Cubic Ft Total = 1.672 Cubic Ft Net Volume: 4.662 Cubic Ft Individual Woofer Volume:Just Under 2.5 Cubic Ft Subwoofers Facing Upwards Port Specifications: Port Area: …

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  25. Started by canderton01,

    Whats up guys, I'm kinda a noob here but I've been lurking around these forums for awhile trying to learn as much as I can before I start this project. I'm mainly here right now to talk about the box. I'm planning on building one myself and the specs are going to be 3.8cu ft tuned to 31Hz. I used a box calculator from a site called KlausAudio.com and I was going to see what you guys thought, because I've heard these online calculators can be off sometimes. Here is a list of the dimensions of the panels needed. The sub will obviously be a Fi Q15(Dual 2 ohm) and I'm planning on running it on a AQ1200D amp. And my car is a 2002 Camry. Just wanted to get some input from gu…

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    • 690 views

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