SPL & SQ / Fabrication

Alright so ive been doing spl for three years now on a team and I just bought two new dd audio digital designs m3b amps strapped on my incriminator audio 18ns and well after playing one song for a short period of time they locked up and burnt the coils are these speakers really true too there power because I was told they could handle 3000 whatts each easy and I dont have the right current going too them I have two 100 batts in back and a heavy duty alt thats running 14.6 volts and drops too 12.8 on lows please help me im beyound frustrated at this point.

Is there any audible difference between using a enclosure that's using a (sub forward, port forward) and a (sub up, port forward) enclosure. I'm thinking of several options for my first system

i have 2 18" treo ssx's my box now is 9.99cf gross with a 100sqin port port is 4x25x21.5 deep after all dissplacements im at 7.68cuft treo reconmends 8cubes after dissplacment im doing a 150.7db at 34hz burp with 1 rd audio d9 amp but can you help me with my new box i plan on keeping it 8 cubes net but what can i do with the port to get more spl but still play low notes and keep it a dailey driver here is a link to treo ssx page click on the view specifications at the bottom of this page for the specs treo web site im running the amp at .5 ohms and this is a hatchback car im doing subs up port back please help me out thanks

We Started today, with this. Enclosure in and playing. But ALL the pressure goes right to the back. Took the woofers out. 2 DC Lv4 XL 18"s. Picture of how large the gap is. Supplies Mocking up the start of the seal. Sealing up the bottom Priming Port for red paint. Then, red paint. Cutting out 1/2 MDF to make seal. Driver side sealing done!! Starting on passenger side. Making sure boot stays in place. ALL DONE........ Until suede tomorrow. P.S. This is the truck. and just so it's known, this is his just a toy. Nissan BEFORE Wall seal This is his daily. McGauhy's 2/4 Drop, Ls3, Magna Flow Dual Turn down's.

Horns and i want to know of were to start... maybe links to some sites and what not.. anything is helpful thanks everyone

as the title says im very interested in this i came across it on youtube watching some vids read the comments a let me know how it is done please

Here is a link from CDT that has basic knowedge on staging, also includes many install guides and specs for their products. http://www.cdtaudio.com/downloads.htm

Hello, I am looking for some help on whether I should do a sealed box, ported or slotted enclosure for my SA-8 V.2 SPL Dual 2OHM. For now, I'm putting a Sony Xplod XM-GTR2022 amp on it. Which runs 500RMS when bridged. I want to build the box slotted preferably, unless you guys give me enough reason to just do a sealed box if its going to be a better setup. If anyone out there already has some plans for a box they have built for their SA-8 V2, shoot them over to me! I'm open to pretty much anything right now. Im putting this sub in a Kia Forte Koup. Working with 19"Hx32"Wx13"D Thanks SSA!

I've always painted my sub boxes and thought i might try giving carpeting a go. I was wondering where you guys buy you carpet from? I'd like something cheap, but of decent/good quality. (doesnt everyone. lol) Thanks in advance

I'm wanting to get some feedback/advice on this box I'm working on for my recent purchase from SSA. Any glaring problems in the design? It will fill the area between the back seat and hatch in an '05 Scion xB. Three 10" SSA DCON S4 subs wired to 1.34 ohm Amp: Audiopipe APSM-1300 (1000w @ 1 ohm) - will be replaced eventually, when funds allow Gross volume: 3.95 ft^3 Net volume: 3.3 ft^3 Port Dimensions: 3.75" x 11" x 27.6" Port area: 41.25 in^2 Desired tuning: 32Hz Would it be better to make the box taller and use a square port with more port area, and longer, in the same location?

So i have decided to build a custom box for my 2 10in type-s alpine subs. I found an equation on JL audio's website to tune a box and have been playing with numbers for about an hour now. Everything looks good to me i just want to have someone double-check to make sure im not screwing things up. The outside dimensions of the box are 11.5X31.5X20.5in. Using 3/4in mdf that would leave me with 5700 cub inches inside to work with. there will be a single vent, 10in tall and 1in wide, going in 5.5 inches. after subtracting the volume of the 2 boards used to create the vent and the 2 subs( 86.4cu in each), ill be left with roughly 5444cu in of internal volume. with the equatio…

I am building an enclosure for a 08 chevy crew cab I'm installing 1 fi bl 12 Im not sure what size port to use or how to tune it to the specs im going for my enclosure is 11"h 45.5"w 16"d rear height is 8.25" I am firing it up and plan to face the port to the front I wood like to tune it to 34 Hrz I am powering it by 1 T1000 fosgate with a 4 farad capacitor my box is 2.51 cuft minus woofer displacement can any one help me if you need anymore info please let me no I am knew at this so please bare with me

I have never built a box for a sub before, and now I am going to be building one for a 8" Kicker L7. This is going to be put into a Jeep TJ, so it does NOT have much trunk space at all. I am not too worried about the size of the box, because I can dimension it to the size of the trunk myself. What I am worried about and have no clue is how to make the port inside the box. I need to know how much space I need in the port to get the most air. Although it is an 8", I want it to perform the best it can through the box. I am looking on Kicker's website and these are the dimensions it says: Mounting Depth (IN.,CM) 4-3/4, 12.1 Mounting Cutout, Square (IN.,CM) 7-1/4, 18.4 Min Re…

Hey guy I need a good beating song with a long bass line ( about 3 min) box is tuned to 32hz and my car peaks around 40-44 on burps. I need a song that will last 3 mins. I have a comp in the morning and there is a kaos class ( average spl score over the 3 mins) I haven't had any time to try any on a tl any one have any sugestons?

2 BTL 12's. The outside dims of the box are 17" tall x 24.75" deep x 33.5 wide. I am going to use a 8"pvc pipe and make my own flares but need help on length for 33htz tuning. Also with it being an 8 inch pipe do I have to have 8 inches from the back of the box to the end of the pipe? Also how long should the pipe be to be 33htz? Please help me with this.

What kind of Box you sugest for 2x Pioneer 307D2 just for SPL Street B class. Dimensions, Port, and other things. Thank`s

im 'this' close to putting my rl-p back into i.b. config-the sound was just to my likeing- but it will mean sealing up the trunk (fold down seats-rear shelf) properly. im thinking fibre glass and mdf and bondo and expanding foam? any sujjestions before i make mistakes?

ok, as some of u know, my first wall i tore out to make room to lay frame. well once the bags are done, wall is getting rebuilt. right now, its gonna be the 4 15" mts, hella close to the front seats, with the port on the top, and the 4 15's under that. i sat in that guy john's van with the 16 12" ssd's, and it was loud. you guys think i should build my wall like a diamond type thing, something like galactic monkey is doing, or just a straight up wall like im doing? itll be tuned around 35 hz. this was my old wall: never heard it either my floor after airbags will be sorta like this:

Is tuning a ported box to 35 hz for daily use normal.

Hey there! I need serious help building a ported box. Ive never had, nor built a ported box and i want to see for myself what the difference is. Ive tried every different box calculator i can find, but im sad to say there a little too complicated for me to understand. Im a rookie when it comes to car audio specs. Im a pro at listening tho lol. I want to learn more, a lot more, but everyone close to me dont want to teach, they want to charge. i could easily build a sealed box, but i really want to port my subs. I have 2 lethal injection 12's. I need 4 cubes, 60 square inches of port and i want it tuned at about 32hz. Space is not an issue. I took the back seat out of my ra…

Hello world, after much research and consideration I have finally decided to become an SSA consumer, I plan on buying a DCON series 15in to run with an Alpine MRP-M650. I plan on designing and building a custom ported enclosure for the sub, and this yields the question, what is the recommended volume for said enclosure? I know the SSA Store gives recommended box dimensions, and I have seen them for the DCON 12, but the fields are empty for the 15 D: Any help is appreciated. My guess would be somewhere around 3-4 cubes? But it's my first build so I feel like I need some reassurance. Thanks

well guys i am confused here and i can't figure it out does five 3 inch ports equal to one 15 inch as far as port area????? i know it is simple but i need to make sure for my design.....or also does two 6 inch ports equal one 12 inch port?????? well guy some feedback would help me out a lot.

I have a Hummer H3 with dual Sundown sa-12D4's running off a Hifonics BRZ1700.1 with 145 amp alt, big 3, 0 gauge, 8 gauge power wire for the speaker wire. I have them in a box with dimensions 38x21.25x14; .75 mdf. The port is 12.5x4.5x31.5 long. I have made the port longer and shorter and can't seem to get it to peak around 34hz. It sounds like it is peaking around 38 or so to me. I have built many single sub boxes, and all of them end up being just about perfect, but I can't seem to get this dual box to sound correctly. I have made 3 different boxes trying to get my box hitting the lows well, but can't seem to do it. Could somebody please help me to get the right …

Hey everyone, So I finally started building my first box that will hold two 2 10" DCONs Everything looked good as I thought I could achieve 2.5 cuft with some 44in of port at 11"x4"...... Well now that I have all the walls in, I have begun to realize just how new at this woodworking stuff I am. I can't post any pictures now so I'll try to explain this as best I can. Mistake 1: I have the port coming in on the left side, going in some 22 inches, then turning and following the back wall the last 22 inches. I planned on having 4 inches of width throughout the port but thanks to my amazing tablesaw abilities, I have 4 inches on that initial run, and only 3.75inches for the…

How could I brace my port more, or do you think it needs to be braced? Here is the bracing of the entire box, but it is also for an idea of what the port looks like... also, do you think a 45 would be helpful in my port? I don't think it would make much of a difference....