SPL & SQ / Fabrication

i have been killin myself trying to figure out a box design for my ranger and have gotten nowhere with it. i got a couple reply's on other forums but nothing set in stone. the sub is a 15"btl and my dem are 50" wide x 16 tall x 16 deep, 5.9cf before sub displacement and port displacement. i need it to have ports on both sides of the sub cause i want the sub in the center of the box (its that way to even out the weight in the truck). i would like it tuned to around 33-34hz.. any help on figuring my port length would be great. please put in laymans terms cause i am not very bright when it comes to this kinda stuff. any help would be greatly appreciated, thanks btw the sub…

whats the smallest ported box, but most spl with 1100w. its going in the trunk of a 94 corolla so size is a issue. thanks jamie

Okay guys, I need your help on this one. Now ive built a few boxes and understand the basic concepts/calcs of everything but have never built a wall before. My brother asked me yesterday if I would build him one yesterday and thats why im posting this today. Can anyone give me some tips and explain the order at which i should start it? **Now Im not asking you to explain every single thing (tuning or port size or anything like that which would depend on the subs, which he hasnt decided on yet) Thanks for any input and as always its appreciated.

Well looks like I will end up with 17.87cu before bracing and sub displacement. I really want to end up with 17cu total after. This is for 2 18in FI Q's on 3k watts. Box dimensions will be Outside 35h x 54w x 27d.... All sides double 3/4 MDF except front baffle will be triple. (may use some Birch for weight reduction) Usable inside demensions are 32h x 41.5w x 23.25d = 17.87cu Port is 8 x 32 = 256in total Sub displacement = .24... but I will be triple baffled so what maybe .22 or less?? Total of six 2in hardwood dowels for bracing =.35 2in wide 45's in corners =.10 So this leaves me with 17cuft tuned at 30hz after all is said and done. I may glass the inside as well? what…

here is a pic of my trunk: I have a 12'' DC lvl 4 sub. I drive a sedan. I like to listen to a lot of pop rock // pop punk // metal music, some have fast bass drums//guitars I think I'm going to go with some type of ported box, which should I go with? a slotted, vented, ported, or what? Can anyone help me design a box for my subs? I also don't know which way to port it, towards the trunk? I'd like to have the box toward the side of the trunk, so I can still fold down the back seat and access the trunk.

1 18" DC Level 5. Still waiting for some other bits to come in (amp/battery). But in the mean time, we want to go ahead and start on the box. We were thinking of these two options. 1) Sub up/ports up. Have sub in middle, with a port on each side of sub instead of a single port. Does anyone see any negatives to this besides using up more wood/cost more? etc... Basically would like to do it this way because OCD side is taking over, and we would like to keep it symmetrical. 2) Sub up/port back. This would just be sub up, with a single port along the bottom of the back of the enclosure. Pretty straight forward. Basically, just looking for yall's opinions. Which do you t…

I've decided to start murdering my truck out except with chrome here and there. So here is my start.

So if you looked at my build log then maybe you can get an idea. If not then to fill you in i have a RE SX-12 in a ported box 2.0^3 at 35hz and after setting gains i am just let down by the lack of serious bump. I'm looking for a recommendation on to what route I should go to get more bump from my back seat area. It's a convertible and it's been said that a smaller enclosure may assist my needs. I have a pair of alpine type-r 12's gaining dust that would be good for a smaller enclosure if that helps any. Anyhow thanks fellas.

im getting ready to build a sealed for for an 87 trans am, for 2 soundsplitter rl-p 12's. i think i'm going to have to use the entire well to get over 1 cubic foot per speaker, but i'm not sure exactly what im going to be working with, and this will be my first custom box. any tips, hints, blueprints, pictures, any kind of help anyone with a third generation f-body can give me? any thoughts on ideal air specs for running about 700 watts to each sub? i want to use 2 separate chambers right? thanks, Shaun

well i competed today w/ my new amps. 2 rockford bd 1500's on my 2 kicker L7's in a new CRX and just thrown, finished at 3:30am we did a 147.7 on the new termlab. good thing is we didnt blow an amp so now we can progress instead of blowing an amp everyshow. now to play and get loud :boink:

...need some mad pound wang up in here yo... LMAO Can ya hear me now?...Good!

okay guys i have finished everything on my box expect the circle for the sub and the hole for the wires.. my friends router is broken now and no one seems to have one.. what tool can i purchase that is CHEAP and works alright.. it doesnt have to be perfect...

I've decided to build a box for my 15" SSD that will fit in my trunk. I was wondering if these numbers sound right or what it really should be. Lol Box will be 28" wide, 17" tall, and 22" deep. Port is 3.5" wide and 21 inches long. Looking to be around 4cuft tuned around 31- 33hz Does this sound right?? If not help is very appreciated!

hey im about to put 4 15 in a acura integra and need help building a wall

Has anyone ever had 2 boxes or separate chambers with 2 different tuning frequencies? ie. 2 subs, 1 box/chamber @ 26hz other @34hz. If so, can you explain your thoughts on how well it worked or didnt work for you. I was thinking about this option, but I am beginner enough to not consider all of the pros and cons in depth. Thanks for the input.

hi all , just need dimenstions for a ported box, for one PIONEER sub TS-W121SPL its the same as the premier TS-2000SPL, thnx for help

After i told him my system he txted me two days later telling me he got a new system he said he got four dual 2 ohm 12s running off a 1400 watt rms amp and he says the box he has is 1.4 cubic feet per sub sealed but he said its tuned to 40 hertz. You cant tune a sealed box cam you? and anothr reason i dont believe him is he drives a pt cruiser and when i asked he said he still has his back seat in. Could u even fit an almost 6 cube box in that timy a** storage compartment? Thanks for all replies

Assuming all have the same sealed/ported volume and same port size. I know the pics aren't to scale so don't take that into consideration. I have seen pretty much all of these types used, so I know any would technically work but I wonder about cancellation with all but # 2. The box would be for 8 10's, tuned to 45hz with about 35 cubes total if you're curious. I would have never considered facing subs at each other in the past but I've seen some of the loudest 4th orders with subs facing right at each other like design 1 and 3 so it might not be as much of an issue as I was always told. All are 4th order walls in case that wasn't obvious and the crap drawing is an overh…

I have an old lanzar max12 subwoofer. My friend wants to get a system for his car but really dosnt have much money for one. If i put the max12 in a custom made t-line box that i made and gave it like 200rms would it be decently loud? Or is there something else i should do to get the most out of it? Im being paid to install everything and make his box so i do want it to turn out very nicely if possible. What does it usualy cost to wire for an amp and just put the box and sub in? (iv done all my own stereo on my own so idk how much to charge him...)

I've thought about doing this and recently seen someone actually use this method but never commented on how good it was. In instances where all-thread cannot be used.. how about running those flat steel bars that Lowes sells on the inside of the box? Those are humanly unbendable.... it's steel. I was thinking about running those, gluing them to the box, drill out contact points, maybe 1 every 12", run bolt through to the outside, threadlock it and use a large washer on the outside of the box with a nut of course. Seal around the steel bar. These bars, if i am not mistaken, are only like 1\8th" thick. Shouldnt' that make the wall it is attached to hella strong? I see n…

Im thinking about building a new box to try and improve sq in my setup a little. i have a 3.75 cu ft box with like 60 inches of port tuned to 32 now, slot port on one side of the two subs. this box is a little bigger than what my subs call for and is an awful lot of port area. im thinking about bringing the box down to 3.2 or smaller and using a 8 round port and flaring the ends tuning to 32. if my math is right 8 is 50 sq inches of port correct? im thinking about choking it down to 7" which is like 38~ and run @ 3 cu ft. im running like 1600-2000 watts BXI2006d would the round port sound better. as with the smaller box? edit" running 2 DC audio lvl4 12s. call for 1.5 c…

So... me and my dad are in the process of rebuilding a 1970 vw bug, and of course... i plan on putting a system into it. the main problem will be with the placement of the subwoofers, bugs are tiny vehicals with almost no extra space. we would prefer to keep a backseat but would be willing to give it up if need be. So does anyone have any ideas for a good subwoofer and somewhere to put it. money shouldnt be too much of an issue but it must be within reason... Im going for SQ but would still like it to get hella loud. i was thinking maybe 2 10in Fi SSds in a sealed box... any ideas or suggestions would be appreciated. My next question isnt really fabrication but while im…

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as of right now i am sound dampening, already heavily dynomated but not enough for me personally. so i am covering the interior with mdf and foaming between the mdf and all metal. the back wall will be about 3"soild, needless to say i want solid. i am going to have the subs facing up behind the two front seats, i have 12.9 cu ft gross and 10.77 net cu ft of space to work with. the box will be constructed from 1.5" mdf and internally braced with 5/8" all thread. the plan is to have an interchangable port set-up for SQ and SPL for compitition. if anyone has any ideas i would like to hear them, this is the first time i have ever used soundsplinter subs. my last sub i ha…

Is there someone out there who can help me with a custom enclosure design with a single 10 inch jl audio 10w6v3. The enclosure i am looking for would need to be 1 cubic foot with aero ports tune at 35hz. As far as space i have to work with i draw a simple image of what the space i have to work with.