SPL & SQ / Fabrication

So after taking a bed apart a few days ago i discovered the mass use of MDF used in the bed's structure. Now if i wanna build a box for my 18" btl, people always say use 1/2" MDF. How important is that 1/2" ? Why does it need to be that thick? For structural/support reasons? the MDF from the bed is 3/8" and i'm going to go buy the 1/2" just because everyone on here says to do it and i trust them, i was just curious. I have like...50 square feet of the stuff.

I've been playing with a port calculator and I find that 30 1/8"x3/4"(which just happens to be my wall thickness) holes will tune the box to a nice 30.5Hz. Now, is there any reason for NOT doing this??? Thought I might arrange them in the shape of an SSA logo for effect.

Ok I owed a freind of mine some money so he asked for a box and retarded me i said ya lol so here we go. It will be a bit different decieded for free i might as well do something different try something new. 1 cvr 10 1.8cubes tunned to 36hrz with an external port 28sqin.. design will be up in a bit and box will be bedlined

Im an authorized Soundstream dealer and MECP certified installer. I do all sorts of installs from cdplayers to custom fabrication. If you have any quesitons please feel free to let me know. I would be glad to help in any way. Mike

Went out to a Texas Bass Productions event today with the Sebring wit 1 12" Soundstream SPLX Quad 1 ohm.. All 3 runs it did a 151.3 Got 1st place in my class(no one was close to me). Brian(Lord Baccus) did a 151.2 with a set of bad RCA's with a Pierce Audio Products 1 off(specially made for him) 15" MOAB subwoofer, ...sorry bout that Brian..we'll et em' next time! Every ones asking about the Sundown Audio amps that me and Brian are kicking butt with....most people haven't heard of them...they are getting a ton of attention... Hoping to get higher on this single 12"...

i want to wall my lincoln but first i need to make sure i wont get a ticket if i do have a wall. any one who knows about that kind of stuff any help would be good.thanks in advance

So i went to the new shop opening up in my area and got to talking with the guys there and well one thing lead to another and i was cramming a box into the backseat of my volvo. Did i forget to mention it was for free? eaa free and after something ive decided on building a wall, yea not alot of people do 1 15" or 1 18" in a wall but this box fits no where else so why not? This box seems well constructed and after building my false floor which i am going to start with the new friends i made at Kustom Tints and Graphics 2, i honestly cant wait just because i liek how the box looks but im not sure if I AM A just kinda bolt the box down or build a baffle over the front and ma…

I have pretty much been out of the game since 2009 because I was happy with my last build and left it alone for about 5 years. I recently bought a 94 F-150 ext cab to DD and I need my tunes back. This truck is going to give me some headaches but I'm slowly getting there. I'm looking to put a 10" SSD in a center console box, sub down with a forward firing aero port to try and get everything to fit and not look too silly. I made some templates today and figure I have 18" height, 24" length and 12" width overall to work with. That includes lifting the box 2-3in off the floor for sub clearance. I've never used an aero before but have been doing some research and I think I des…

Hey all. I have my Fi SSD 15 in a box right now that is tuned wayyy to high. So I was crunching some numbers for a new box. Here are the specs, can you all look over them and see if everything is correct please? 28" wide 17" tall 28" deep Port: 4.5" wide 15.5" tall 41" long Sub up port back. 3.9 cubes net, @ 31hz, 17.88 sq in of port per foot Also with that box, should an SSD 15 hit the lows pretty good?

Hey all.Im going to be getting a different enclosure and im wondering how big it needs/should be.I have 4 10" DC lvl 3 subs with lvl 4 upgrades.Ive been doing some thinking and I think i can move my batteries and have room for a bigger enclosure.The max deminsions I could use would be 32W x 19H x 40D.My goal is to hit 150db and I just cant do that with my current enclosure.I know the deminsion I gave are probaly to big for the 4 10's so thats why I was wondering how big I should make it.I would like the entire enclosure to be double baffled and I would like to use aero ports.I have always liked aero ports but I have never had a enclosure with them.I would like the enclosu…

im makeing this post for ppl trying to use fiberglass on there install's. this will help you understand how and what to use to make the job easyer. i will have more later and hopefully have a step by step so you can see it at work.... so here we go... the material's you might see is fiberglass this came's in many form's such as chop mat, cloth, fleece, speaker grill cloth and speaker carpet. next is the resin again came's in many form's, polyester and epoxy. these are the most used in the car audio world. other thing's you'll see is PVA, mold wax, MDF, bondo ect ect.... (and a few time's steel mesh, but i never used it.) ok now im goin to talk about resin. the resin we mo…

Sorry for another question (just taking advantage of my day off). I just finished up damping my door panels, the sheet metal, framing, and plastic panels,as well as the rear hatch with eDead 120 and Damplifier Pro. Probably have used about >80 ft^3 so far. I am doing my entire roof and going to do the floor soon too but I am having trouble deciding what to do next. I keep reading very different theories about what to do, whether to use closed cell foams or open cell foams and where to use them. Some of you have recommended websites to buy different products but just need to know how much and what to buy. I have a lot of room in my doors between the interior plast…

I just got a 12" Mag from Low-Hz, and currently have it in my old sealed box that housed a JL 12w6(v1). That box has about 0.8 cubic ft. after driver displacement. Anyway, I was planning on building a ported box and got this off the net: http://www.subwoofertools.com/forum/ported...=&Vas=&Fs=&CE=0 I was all set on building it, but decided to read more, and the more I read, the more I get confused and hesitant. So I decided to ask the official SI site for input. I want the best ported box with a maximum width of 30" and max height of 13". It's going into a 95 Ford Mustang, and I would like the box to fit perfectly into the hole when you fold down the seats. …

Sooo...got a bit of a rude awakening today. Found out my e12a is actually presenting close to a 10 ohm load to the PG Tantrum 1200.1 in box - impedance rise is killing me. The sub is a 2 ohm DVC currently wired in series, and it's close to 2.5 times what I was thinking the impedance was. Pardon the extreme n00bish question, but is such a drastic rise common? It just feels a little strange running my sub at a lower impedance than my amp is rated for (if I drop it to 1 ohm), but if it models out well, hey...that's what I'll do.

i am about to attempt to build my first box for my two db drive platinum 12s and a few friends have been telling me that a down fire box would be the way to go I am wondering if it really makes any difference in the bass level or spl I also planning on porting the box but I'm not sure where the best location for the port would be I'm new to all this when it comes to fabricating an enclosure. Its going to be about a 4 cubic foot box in an extended cab s10 with the port tuned to around 32-35 hertz. Any help or suggestions would be appreciated.

Is it possible to to a T shaped slot port? I'm designing a box right now with 2 woofers and no divider. I was planning on making a L shaped slot port off to one side of the woofers, but got to thinking about putting the port in between the woofers and making it shaped like a T without a divider in the middle. No clue if this would work or if the velocity of the air coming from each side would create turbulence where they meet and make the port less efficient. I would put a divider in but I'm limited on space and a divider makes the port length longer per side and cause me to increase the size of the box to stay optimum and the dimensions are larger than I have to work wit…

Anyone no what size t-nuts to use in double baffle box for 2 sa 12s

someone posted up a link to a SMdesigns thread that had a whole bunch of tips and help for building a good transmission line box. Whoever posted this up please let me know, as i am having trouble searching for it. Much thanks to anyone who has this link. Mike.

So Lowes is having a sale in my area and i noticed that 3/4 MDF 4x8 sheets are on sale for 32$ I was wondering, how many 4x8 sheets would i need to make a 4.0cf ported box After displacements. Any help is appreciated. Oh and theyre having a sale on 1/0 for 1.93$ a ft

I have a 2003 Pontiac Vibe and an AA Mayhem 15 and Im trying to figure out, ideally, what size box would give me best results and what way to fire my sub and port. Can anyone tell me how to figure that out? Like different variables associated with this. I was thinking sub up port back.

okay, so I drive a 1995 honda prelude. I just got my nightshade 12 about two weeks ago =], I am running it with the saz 1500, I have also done my big three. I feel my nightshade isn't at the full potential but, it could just be my box. Off the top of my head I can not tell you my demension, all I can tell you is that its 2cuft at 33hz. I am planning on building another box very soon. I would like to know what input anyone has on they're 12" nightshade and there boxes and how they sound, also anyone with a prelude and where the have there sub mounted and the port faceing. Thanks, Jordan

I got 4th in 139.9 after busting out against alpine. But I got to take Bill out in round 1 so that made my day 1-6th place finishers in 139.9 all qualified with a perfect score My scores for the day, 145.0 windows up 145.8 windows down 146.6 drivers down All on music (jeezy, ~40hz) Thanks DC for making a lvl 4 strong enough to hold 2800w rms -Derw

I am looking for a good place to go to learn about building crossovers. Not only how but what components to look for, theory on how different setups affect sound, anythng and everythng.

I want to put 3 batterys in the back end of the car. I have a lot of 1/0 wire. Which is better/correct?

I've been tryin to find a set that will owkr well together 2 way active.. I think I've come up with it. It will be run off a old sony mobile ES xm-5046 choices (madisound) mid - either SEAS ca18rnx or L18rnx(aluminum) both 7" tweet - SEAS 1" textile dome 27tffn I believe either of these would blend well and work together in a active 2 way.. What do you think?? or WOuld both mids work or would one choice be better?? Thanks, Joe. P