SPL & SQ / Fabrication

PPL, I'm in the process of building an all out SPL car. (SM 3-4) Right now, I have 2 AutoTek MM4000.1's, which will be connected to 2 ATOMIC APX18D2's. (wired@ 1 ohm per sub) Being a Kinetik dealer here in Japan, I can get the 2400 Monsters at a good price.. I used the calculator on the site and it said I needed 3 of these monsters! My goal is to get full power out of the amps(burps only!) How many batteries would you suggest? and before anyone suggest other batteries, I've already looked at: Odyssey 2150 NSB90 via Northstar and Optima g31 Yellow tops all comments are but experence is wanted holla when ya can TIA Gavin (MERRY CHRISTMAS AND a early Happy NEW YEAR …

I'm planning on securing my sub box to my trunk using L brackets. I'm also putting in a plywood floor so I can mount amps/batteries/etc to it also. But my question is that, when using the L brackets on the box, do I just bolt straight through the side of the box? And if I ever move the box to another vehicle or change the arrangement, it will have a handful of holes in the side? Just seems odd. Is this the right was to do it though?

This is my first post on here, and need some advice from the BTL gurus I just picked up two BTL 18's, dual 2's, fully loaded, and will be running them off of two modded Memphis Mojo MC-2000d amplifiers (1 on each driver at 1 ohm), approx. 3000 watts each. In my vehicle, which is a 2007 Toyota FJ Cruiser, I don't have a whole lot of useable space to work with and still maintain practicality, so the enclosure is going to be a bit tight for specs. I will run the subs inverted to try to save as much airspace as I can, but I only have a total of 11.2 cubes to work with, before port displacement. This is going to be a daily setup, and I am more than likely going to build it…

can you guess what im going to put in the old F-150 @ least till my new subs come in ...

I'm looking into building an enclosure that measures 34W (left to right) x 18.5D (back to front) x 14.5 in height. The speaker is going to sit on top, port firing back. This is an L port design. The port will be 3 inches wide. My question is, if I want to tune at 33Hz how long would the other part of the port have to be (the one that runs across the back of the box)? I used RE's calculator for my last box a few years ago and it couldn't catch the lows for nothing, so I know something is not accurate about that calculator. If someone could help me with this, I'd appreciate it.

Little problems nothing serious. Built enclousure for some 18inchrolling zcons limited on space but couldnt pass the offer up on some z's. Box is small for ported box and tuned high with a smallamount of port are, basically if you could mess a box up and screw yourself over in output this is the box. 180inchs of port area withc4.5cubes per 18 tuned at 40hz not that happy with the output even on a .5ohm load on a sendo with electrical back it up. My question iss would i see a day and night difference if i built a single 18 box the biggest i could build out of my space? Pics of the franksteinvbox xustom finish on it.

Has anyone used eDead for sound dampening. I know that their subwoofers arent great, is this true with their dampening materials as well? I won't pay the outrageous price for Dynamat, I can't afford to spend $400+ to do my car. I can get eDead for .80 cents per square foot. Even if i had to double it up, it would still be considerably cheaper than Dynamat, Second Skin, etc. What do you guys think?

I want to tune low for my nightshade 18. How big should the box be after displacements? Port area? Tuning? Thanks!

Um.... its me again i might need a box design either for a kicker solo baric 15' s15l5 for an explorer...... Or im am going to try to buy a fi btl 15' either one would be nice to have a box design for both of these are going into the back of a 95 explorer.... I do not have the messurements quiet yet but i should have them tomorrow.... I do not need anything special just a simple design to get me by for the time being....

i have 2 level 4 xl's in my trunk in a 9 cube box and its tuned to around 32 or 33 hurtz and i was wondering if anyone had song songs that would go with that tune? i know money man hits hard run quickly is insanely low just love that feeling

s10 blazer. i have 6.5 door space tweeter space in dash.if i added another set of comps in the kick panel would i wreck my sq. just wondering being that one tweet in dash one down in kick. how about comps in kick panel and use the door for just a 6.5 mid

im trying to fit two lethal injection 15's in a 06 monte carlo. so according to looking to specs they say that i need about 3 cubes min. i was wondering i could fit a box that big in a 37 w , 36 l , 16 1/4 h. i am also open to using aero ports if thats what i have to do to fit the enclosure. thanks for everyones help in advanced

whats a good tuning for a subwoofer box using 8" for sq purpose and would bring out the best musicality beats for new wave songs? swing out sisters, bizzare love triangle original track, gona get your love, godfinger, reasons, etc etc i was thinking of using a sealed box, but the 8" on a sealed box would just produce hard beats.. i was thinking of 38hz on a 1.0 cubic feet? any suggestion? im kind new to SQ system, and im having a hard time deciding on how should i tune the box or go with a sealed.. i would want the output to produce hard beats when needed at the same time could produce long bass when needed.. :puzzled:

can someone tell me what are the benefits or any of building a kefed box..they look good as hell but is all the extra work really worth it..jus wanted some opinions

So As I've been tired of looking at how my subwoofers look,(well the looks), then I've decided to make a custom ported box...only difference I'm going to fiberglass it so it's not going to be cubed anymore...so I'm trying to find out my volume so I can calculate all the port things...

I had a last minute change of heart and decided to scoop a pair of Obsidian 18's. Can anyone give me a general idea of what size to build it? I am still going to get a BC2000 or a SAZ-1500 (The sundown is so much prettier .-. ) and I would like to tune it lowish for chopped and screwed music. Is 26hz too low to be realistic for music? I don't listen to hardly any rock or metal, mostly slowed rap so tightness and accuracy are hardly concerns of mine (my xplodes are going into the fire pit though) What would be an optimal size for a pair of 18's? Once I get a feel for how big it needs to be, i'm going to see what dimensions I can squeeze out to keep the box as low as po…

Hey guys i came up with a design i just want to know if i did this right let me know its 4.4 cubes not counting port area and its 40 hz can somebody double check this and confirm what i did was right thanks

ok a couple of months ago i had woodlawn cabinetry build an ensclure for the subs that i thought i was going to use. well like a couple of weeks ago it arrived. and i really like it but the subs i had told him i was going to use i no longer want to use. so i figured that if the subs that i wind up using have a smaller displacement then the ones i was going to use then the port would be tuned a little lower and vise versa for bigger. now am i wrong and the ensclure is a 4.5 c^3 tuned to 33hz after displacement, common chambered for 2 12" ICONS. i want to use either 2 eclipse sw7200 or 2 12" aa aresanals powered by a sae1000d if u want to know.

I was wondering if anyone would be able to make a sketchup for this box. and please correct me if my tuning is off. box is 4.33384 after sub displacement. W. 30 H. 20.5 D. 16 wood thickness .75 and the port being 32.5in long tuned to 32 hz with a kerfed radius of 3.

I looked at a couple of websites but am still confused as to how to tune the port to the frequency you want. And how does the length, width, height of the port affect the tuning?

I'm starting my first system with 4 of the rl-i8's and need a lil help on my box. it's not gonna be just one big box but 4 seperate ported boxes. each one will be about (acording to the program im using) 10" wide, 15" tall, and 9" deep. im having problems with the port though. the program said it should be 1/2" by 2" by 2" deep for a 35 hz. this sounds way small to me. is it? and does this idea seem good or is it too "over the top."

I was wondering how to build a ported box for 2 18" btl loaded each one in its own chamber for a 03 Yukon and how to tune it between 30 and 35 Hz. I'm looking get some serious bass. What are some dimensions I can use with the speakers facing up? I will be running them on two saz-3000d. Hello again I'm looking for spl in my 03 yukon. I am looking at running 2 Fi Btl 18" on 2 Saz-3000D amps in this amount of space. H 21" W 46.5 D 22-28". So what do you think? I need help with the box and port dimensions. Once I have an idea I will start the building. I need all the help I can get. Thanks

I am wondering if the Mach 5 SPL-12s would be any good in a T-Line? I have been told they should be good, but the fs is sorta high. I am planning on doing this with my camper shell but with a different box... the box can run the length of my truck... I plan to make up some metal frame for the box to sit on inside the bed. Having the box above the floor will give me room for my air ride when that gets installed..

posted by ohjay is he a hater or did he just get a shitty box Bah, you don't want the POS box that comes with them, you're better off with the prefab boxes. I have one that was built by Kevin and the baffle flops like a fish out of water with 175 watt rms subs.

i have two idq12's in a 1.7 cubic sealed box powered by one dls A6(875@2ohm-1200@1ohm). i listen to mostly metal so i need the sub to be able to keep up with the fast double kick-drum. the problem with my set-up is i can keep up with the beat but lack lowend. i took out my xtant 1000/1 think it was the subsonic filter frequency blocking low notes. it must be the box- what is the best application for a truck