SPL & SQ / Fabrication

So I only have bought pre fabbed boxes... Yes I know I am a lame person. The boxes are probably not to spec. And the boxes I usually get are cheap and are usually sealed. So I have been doing a lot of research and I think that the next box I want to BUILD is going to be a ported box. I know this scares me because of how hard it is going to be but I think I can handle it... If not it is a learning process. I am getting a Icon 12 dual 2ohm sub. My uncle who lives here does flooring and has tools/experience with wood working and stuff. Also what he does have experience with is fiberglassing and also doing carbon fiber in the hull inside his jet ski to make it stronger. I …

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.

Now I gott figure out the volune but my wierd ass box isnt liek any of the calulators boxes

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…

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.

Ok so i have been doing a lot of research for the past 3 months on my plans for a setup. i decided that i am going to go with 4 18"Fi SSD in a blowthrough enclosure designed by peter kulicki (still designing) with a Sundown 3000D (still saving up for it). but my dad told me my subs are going to kill my highs. currently have 4 kicker 6x9s doing the work but i am looking for some suggestions on an extreme setup for some highs in my single cab. by extreme i mean i want way more than a set of comps and tweeters. any help will be appreciated if you wanna check out some pics of my truck you can check it out here!! http://www.cardomain.com/ride/797852

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…

Hello, I have 3x SSA DCON's in a box that I handmade from a design from a member here. I recently bought a new SUV and the box will not fit. The box is too wide by 1 inch. The inside area of the port now is 14 3/8" X 7 1/2" ....if I cut 1 inch off of the port then the new port would be 14 3/8" X 6 1/2". Would this change the sound of the subs a lot or would it be ok to do this ? Thanks in advance for any help.

Whats out there thats relatively beginner friendly? I want to see if I can do a ported box for 3 MJM-18s or 2 IXL-12.2.2s..

I currently have 2 SA10's in 2.5 cu ft net tuned to 32hz. They are running at 1 ohm off an SAZ-1500D. I'm pretty happy with them, but the box is the wrong shape to fit where I want it. This is going in an 03 Lincoln town car on the hump behind the seat on top of the gas tank. I have 41" of width, 18" of depth, and 10.5" of height. So I should be able to get 2.5 cu ft net, but just barely. One reason I'm considering the skar subs is that I get a free box. I can get 4-8's in a custom ported box shipped to me for $500. Or 2-10's for $380. I've been thinking about 8's since the sa8 came out. And the box would look nicer for 8's since I could do a flush mount baffle. I don't h…

http://www.slapshow.com/slapem/SLAP_dBQ_Scorecards.pdf the 3rd score card....for slap dbq street format can anyone explain to me what the following parameters men exactly.... wire termination wire protection battery venting safety equipment safe operation head unit integrity amplifier integrity speaker integrity processors and xover integrity wiring integrity and a tad confused on the floor noise...what exactly is that?? road noise? any/all help would be appreciated....

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

Made another video showing the rest of the kerfing process!

just need to know if anyone could tell me the port lengths inside this box http://www.ebay.com/itm/4-0-FT-3-TUNED-32Hz-SLOT-VENTED-CUSTOM-MDF-SUB-ENCLOSURE-2-10-INCH-SUBS-/400326246337 id rather make the box instead of buying it lol, but if anyone could be so kind to help out thatd be great

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...)

From what I've been reading, using a ported box will give you a 3 db gain in output, as will using a second subwoofer. Right now I'm running a ported Dcon. So, if I were to buy another one, it would pretty much be a waste of money to run them sealed? I should be getting the same amount of output from one ported as I would from two sealed? (Someone should really change the title under my name from "Member" to "Forum idiot". )

Hi everyone I am about to try my hand at making a box of a different type for the first time. Mainly I'm doing this because it is very interesting to me and also because I can stick this speaker in my girl's car and if it sounds awesome I;m hoping she allows it to take up that valuable "grocery getting" real estate in her trunk. So I'll start here. Vehicle : 2002 Lexus GS300 Location in the vehicle: Trunk Space available (Length x Width x Height): 36" x 24" x 22" Subwoofer make and model: Ampere Audio 2.0 8" (spec's below) Subwoofer Size: 8" 300 Watts RMS Number of Subwoofers: 1 Type of Port (Kerfed, Slot, Aero, etc.): slot (T-L…

What is the best way to determine the frreq of a box? How do you calculate the Hz it will be tuned to?

i got a kicker l7 15 dual 4 wired to 2ohms into a hifonics brutus 1200. i just got my box built by one of my buddies who owns a shop. the box is roughly 5 cubes tuned to about 35hz pretty sure. i got everything together last night and spent all day today playing around and trying to tune it and it just does not want to put out those real lows in some songs. sounds like its just blowing air. None the less it tears apart the mid to high bass. i dont know what i could do to change it up maybe rebuild the port or something. not to good with this stuff thats why im asking you guys. inside of box dimensions: width 39 height 13.5 depth 18.5 its got 3 in wide slot port its just…

Alright, I'm going full blow post with this. I'm tired of wasting paint. I've been painting this damn thing with color now for around two weeks. Giving plenty of time to dry between coats, wet sand, etc. and it still looks like shit. There's 6 coats of automotive primer on it before I started painting as well yet it still continues to soak in, like so. This is after around 3 coats of paint. BTW the color is deep jewel green with the metal flake in it. Same color that's on my '70 chevy. And this is after around 8 coats of paint. The picture was taken this morning moments before coat #9. So what can I do with this? I was wondering if a coat of clear over the pain…

hey im putting 4 l5 15's into my van but was wondering iwhich way i would be louder, if i had 2000 watts going to all 4 so it would b 500 a piece or just do 2000 and only hook up two for 1000 watts a piece , in my spl class for this year i cant exceed 2000 watts

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:

Well i'm talkin to a member on *** about buyin his 18" dc level 5 but first i got to make sure i can fit it decently in my trunk (wall is not an option and im not taking out the back seats). my trunk is 16-17" high depending on location and im looking to run a box this size (optimum size without going into a different shape from square/rectangle): 32" wide, 16" tall, 30" deep. should be ~ 7.795 cu. ft before and displacement. im lookin to have the box tuned to 31-33hz as i listen to mostly rap and techno. the sub specs according to DC site are: Mounting Depth = 10.5Mounting Hole Diameter = 16.75"Motor Width = 9.84"Weight = 80.5lbsVC Diameter = 3" Flat 8 layerSd = 1159…

Well I was bored so I made a couple vidz. Hope you enjoy :bigclap: Up first is a vid showing air movement from drivers window Breaking the lil guys in. Strange noise is not the subs. The closer the mic gets to the port the worse it gets. Lastly my no flex flex vid LMAO!! Will post more if ya want!

Just waiting on getting my two 15" icons and, since I have nothing better to do I was wondering if there was any box type or orientation you'd like to see me try in my 2004 Impala. I'm going to try a ton of different boxes and orientations with a lot of testing to see what works out best in my application and I wanted to have some fun with it. I'm NOT doing a wall, but ill be pretty open to anything else you'd like to see me try. I might actually end up using your idea if it works out the best! -Mike