SPL & SQ / Fabrication

I have never seen this box design before. Anyone care to explain what this does?

Hello gentlemen and ladies. Here goes my first post... I've been rolling with a 12" Polk SR DVC 4ohms 700RMS2.0cu ft. and had a baby she's just 7 months now, it's pain to carry that monster into the house every time we plan to go shopping with the stroller. Also feels unsafety with the huge box in the back of the hatch with baby on board. Today I was so excited to pickup a SA-8 V2 from a guy locally for $80, when I got there it doesn't seem like the SA-8 V2, so I though it's a V1 so I grab it anyway, came home start building my box, and do my research while waiting for the glue to dry, finally find out that that sucker sold me a E8v2, which i'm planning to get a SA-8, but…

I have a great interest in the science of box design and I've seen several examples around the 'net of folks building high-power series-tuned 6th order bandpass boxes for SPL purposes. One common design theme seems to be to purposefully undersize the rear port, the reason given is for "cone control". This appears counter-productive to me because the frequency where port velocity will be the highest, and thus having an undersized port will have the most effect (whatever that effect may be), is at the tuning frequency when cone excursion is at a minimum anyway. It seems to me all these guys are doing is making a 6th order bandpass that becomes a 4th order basspass with a…

I have sa15s the box is gonna be around 7-7.5 cuft box. Would tuning it at 40hz be too high for a daily driver? I want it to be hella loud!

Just still curius, about db dust amd spl glue can i have a hint on what that is???

Just signed in here and my Xcon 15 will be here monday and wanna get this box built. Having my brother build if for me but lacking some cash from a serious audio overhaul so figured id ask upon here. Thoughts Would like to be 30hz-34hz, I like them lows plus the Xconx opt. is 26hz-33hz. and everyday music Would like about 4 net cubic ft., again subs opt. is 4 Sub up Port back i believe has sounded the best and fits the best Car is 97 Mazda 626 es (4 door with trunk) Box must be as shallow as possible Length i have about 35-40" depth about 25ishin and height id like around 12 or so inches, sub depth is unlisted on SSA will be powered by sundown 1500 V1 at 1 ohm I think th…

I've got ~13 cubes net - up to the window line in the cargo area of my truck, while still fitting (3) batts. I've got power on tap upto 6kw nominal. All ported, nothing tuned higher then 38hz for music and daily wangage - preferably more like 28-30hz. Take Your Pick... will build on Wednesday. Thanks gent's -Nick

Alright I'm looking for advice on a sub box design for an Sa-12 that will give as much SPL as possible - without sounding terribly peaky. I'm willing to compromise on Spl for a frequency curve that would be acceptable for normal music listening- hip hop, rock, and country. sub is on JX 1000/1 - if you have questions about my vehicle and setup - look on my profile first under "About Me" and then ask me if the info you want is not there. Member Quentin Jarrell said "I would build the enclosure 1.75 cubic feet net tuned to 32 hertz. This will give you a 3db ripple (boost) at 35 herts and give you a F3 (-3db) at 26 hertz. This will give you the sense of exaggerated bass …

since I own a scion, I frequesnt the scion bbs. Well, this guy (works for or at eDesigns) is putting 32 7.5" eDesigns woofers in the back of his TC. I guess the project just started today...but here are some pics he posted.... This reminda me of the Bose 901 series home speakers... any thoughts on this set up? I imagine it would get pretty loud. aside from being overly rediculous..what are the advantages of using 32 7.5" woofers, as opposed to 2-12's..? ...hhhmmmm....maybe I could do, like 16 rl-i 8's in my scion....hmm....

Was going to build a small sealed box for my brothers truck. Just wondering if any tuning can be put in a sealed box. Or perhaps it goes off the speakers "Fs" ...hell if I know haha

I was thrown into the fire so to speak at work, designing and building a box for 2 phenox gold 12" subs and i found out our company policy today is to resin the entire inner box and glass the corners. I do not believe i have enough resin to coat the entire box so my question is this: does covering the box with resin or any section of the box improve its performance? should the corners be glassed and if so what is the best way to do this? i was shown a corner piece with resin and kitty hair pressed into it, it was not smoothed. i need to finish the box tomorrow.

I have a single ported kicker CVX 12" in a custom box which I built, IT sounds nice. It is powered by a kicker 750.1. The box is tuned to 34hz i believe and is 2.25 cubes. The audio is nice, a nice mix between power and quality, the way I like. But Im looking to go bigger which is difficult because I have a volvo. I came upon an AMAZING deal. I am getting TWO kicker L7's and a 1500.1 kicker amp. Each L7 requires 3.23 cubes ported I believe. THER IS NO ROOM FOR TWO PORTED IN MY TRUNCK. But each one only uses 2 cubes sealed. MY QUESTION IS: Would I get more sound (louder) with one CVX 12 ported @ 750w OR would I get more sound (louder) with two SEALED L7's @ 1500w? I KNOW s…

Time for a new design for my extended cab S10...2 sundown SA 12's going in, which way should the subs and port face, I have not seen much info on enclosures for these small trucks and I would like to have a plan before I start the project........I would appreciate any help

Okay I'm seriously considering going active for a few reasons: I want midbass with authority, hopefully better sq since I can tune everything, and I like to fiddle and adjust shit like crazy so this will give me something to work on and "perfect" so to speak. Tweeters and or mid range can fiberglassed to a-pillars or installed in dash. I'll likely try both. Midbass 6.5s will be in kick panels. I once heard a hybrid audio demo car and it has 4" mid ranges, 6.5" midbass, and 8" subwoofers, no tweeters, and it sounded awesome. Not saying that I'll be able to get away with not using a tweeter. Let's start from the bottom. Midbass I'm looking at: peerless sls 6.5s http://www.m…

bought a 18" ftl fully loaded for daily, and i was wondering if anyone can design something for me. max dimensions are 55 in. x 20 in. x 26 in. doesnt have to be exactly those sizes, if i can go smaller i wouldn't mind at all. this is going in a ext cab f150. going to be used for a daily ground pounder. any help would be greatly appreciated.

What are some easy ways you guys have used to gain DB's. Like myself, I found my old camaro did a few tenths better, with the hatch cracked, and the windows cracked, and the glove box open. Just curious what you guys have tried to gain those few tenths.

cant figure it out. two IA 187 15s off a AQ1200d, 6.0^ft3 ported at 37hz. To get any decent bass i had to turn my gain all the way up, and bass boost to about the middle. my remote gain shows clipping at medium volume. Im very confuse at whats going on. I put a battery on the subs and they popped out at the same time so im pretty sure they are in phase. any other ideas?

So Im designing a new enclosure and have come across a speed bump. Using the12volt slot port length calculator with these numbers: 24, 4, 6.13, 32= 33.13in Using carstereo.com port length calculator with the same numbers for a square slot port= 21.13in But when you change the option of slot port from yes to no, the new calculation is exactly 33.13in Why do they not match for the same thing? Shouldnt a square vent be shorter than a slot port? Did carstereo.com just flip flop them or something? Am I taking crazy pills or what?

As the title said I am looking for the best options for my install. I am thinking of just using the HU power beacuse I honestly don't want an amp in there right now. I have a mediocre at best JVC HU for the moment, and stock speakers. The dash takes 4" speakers and the back (which I could give a shit less about) is 6x8 IIRC. Sean (M5) had asked for some pictures with a 3" circle around the A pillar (if I understood right). Well Sean all I had laying around is a 2" challenge coin so hopefully this will work nonetheless. My goals are loud, clear-ish (not a SQ guru but I know what muddy music and just off music sounds like) music for daily driving around. Especially with t…

Ok, well My box is done, and the entire system is up and running. I have a few issues but the one and most major concern, is that my sub box smells like its burning..lol I know, weird, but it smells as if it is charing or something and I don't know why. Anyone have any ideas? Is it just the "new box" smell or what? I smelled the port area and its deff coming from the box. Also, it seems to be pretty warm. Its a 15 inch IA LI. The sub seems kinda warm too, the dust cap, not really hott but warmish. Please help. My box is about 3.9cubes and 3.5 inches of port which is about 54 square inches total, its around there.. Any help would be nice.

Hi I was just wanting to let everyone know that I do free subwoofer enclosure designs if anyone is interested just send me a pm with dimensions and your subwoofer model and I'll get back to you as soon as possible. Also I can build quality subwoofer enclosures at an extremely low price so if anyone is interested in that send me a pm with the subwoofer model,box dimensions,what type of music you will be listening to, and if you will be entering in any SPL competitions. My email is [email protected] and if you would like to contact me by phone my number is 901-569-3975 and ask for Spencer. EDIT: Mods if at all possible can you pin this because I don't really want to hav…

I have built a few MDF sealed boxes and now im building something to fit underneath my truck seat so I'll have to use fiberglass AND it will be my first ported box. How do i go about building the baffle inside the box?

Im about to start building a tube out of MDF for a sub box, but before I needed to test things out to see if I could. I also decided to take pics of it for a little tutorial if other people are wondering how to do this. I started of by finding the inner diameter I need. Im going to use this for an 8" sub with a 7" cut out. so my inner diameter is 7" Now outer diameter: I'm using 3/4 MDF so my outer diameter is 1.5 + the inner diameter' 7+ 1.5=8.5" Now I can find out how long I need to cut my board: take the outer diameter multiply times pi to get the circumference, which will equal the board length: 8.5 * 3.14 = 26.7" Board length is 26.7" Now I need the inner circumfere…

Lets see em guys. I wanna know how you guys cram bass into these small areas. Post pics of your single cab setups: amps, speakers, whatever...

check it out... im getting fustrated.... i have a trunk full of great audio.... BUT...... someone with bullchit in the back of there suv is close to being the same ear level audio as I....... so what else can i do... the way i see it is i need an suv... then i can put what i already have in it and it will be 10 times louder....