SPL & SQ / Fabrication

I just bought a 15" fi btl dual 2 ohm off of craigslist. The box that came with it is obviously way too small and tuned to high. I was wondering if anyone could help me figure out what size of box and all that stuff I need to get what I want out of it. The current box is 19"x18x17" that's about 3 cubes and inside that enclosure is half port and the speaker. Way too small. It lacks lower end very much. Im running it off of a autotek ss1500 at 1 ohm. I want it to be audibly loud and hit as hard as possible. I have built many boxes but just want to really make sure this one comes out really well. Any suggestions would be appreciated. Thanks.

hey guys i have a box in my 2000 grand cherokee in which i had a single sa15 but now the sa15 is sold and i just bought a Zv2 15.. my box is 36.5w 14.5h 11.5d and the slot port is 3x12x19 so i know i need to make the port bigger im just not sure how big it has to be.. trying to tune it to 32 htz... any input would be wonderful thanks

Went to competition today out in South West Fort Worth.(Whole new world to me.) Got my single 12" SS SPLX back so I decided to strap both Sundowns to it for 0.5 ohm per amp and let her rip. On my Kinetik with almost no charge last night I did a 151.3 in a 60Hz SPL box. 2.5 cubic foot box tuned to 60Hz with 2 4" aero ports 6 inches long with 1 coat of fiberglass resin on the inside, and the master amp at 1/2 gain. Will post up a pic of the setup and score as soon as I get them uploaded.

I've got a pair of Kicker comp CVT65's just laying around and I thought I should do something with them. the manual says 0.2^ft sealed and well.......that sucked. wondering if anyone on here has any experience with these in a ported enclosure or any other recommendation that might make them work.

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I am wanting to try building a enclosure with a flared port and was wondering exactly how to do it if anyone can help with this i would really appreciate it.

does anyone know the t/s parameters for an oz matrix elite 12.2(dual 2 ohm voice coils) since i can't find the bl or sd measurements anywhere? and from your past experiences what enclosure size,port and tuning is best recommended for maximum street bass?

im planning on building a spl box for my 12" BL and would like some input from people with experience on a basic design to work around. for an spl box, i know people sometimes use a smaller box with more port area. my daily box is at 1.8ft^3 tuned to 33 with 26.5in of port area. approx how much port area would be ideal for this sub in say, a 1.5 cu ft box? im powering it with a hifonics bx1606d @ 1ohm and its in a 97 4runner, so anyone have ideas on tuning freq also?

i need help in making a ported box for a re xxx 12" v4 for a vauxhall astra sxi 52 plate could any one please help me

Okay so i'm planning on having a box built for 2 12"s and having the subs face the roof (see pic) I'm wondering if I have a top piece of wood above the subs, how that would affect the sound? The top piece of wood would be above the subs by a couple inches. This would allow me to put stuff on my box for storage (ex: my backpack...) Does this make sense?

Im gonna be getting my 15" custom juggernaut back from PSI soon and i was gonna build a reg ported box 4.5 cu 35 hz first, but i am kinda dabbling with the idea of a 4th order. ive tried looking up some info but so far i just have spent alot of time and still dont know that much about them. any opinions, advice or tips is appreciated. im mostly looking to figure out what the method is on figuring out how many cubes you need inside the sealed area, and how much you need in the ported area and what you port it to, and why you port it at that hz. im planning on building multiple boxes for this sub to figure out what i like best

okay, well I got some money for my birthday, and was thinking of picking up some mdf to build a ported enclosure for the SUV. Single 15" sub off of 600 watts. mfg reccomended optimal enclosure is 4 cubic ft. tuned to 34 Hz. My max dimensions available are 38.5" W x 24" D x 18" H Here's what I was thinking: 38.5" wide by 18" high by 18" deep (outside measures, using .75" mdf) Sub up, port back. Port 16.5" high by 4" wide by 28" long (acoustical, physical 23.25" since it will have a bend) gives a gross volume of 5.82 cubic ft, net of 4.24 cubic ft after subwoofer and port displacement, tuning of 33.8 Hz will be adding some bracing but not enough to bring tuning …

trying to decide on 2 different setups and basically, if you like loud (40hz area) but also don't wanna lose that low rumble in the 29-32hz area, what setup would be ideal? all ran off of a 5,000w amp 3 12" Fi Qs(BP option mandatory) Sealed in 4 cubes. 3 10" AQ-HDC3s ported at 37hz. I know that the 10s are louder but i have never done a setup of this magnitude and am wanting to know really, for someone who may have done something this loud before, what is your opinion on this? I know the sealed setup, i can get my lows just fine, will not be as loud as the 10s but is it gonna be very noticeable? Basically, i can give you a scenario- If i set SSF to let's say to start roll…

Does anyone know a site where you type in your demensions and it figures it out for you with a cut sheet?

well i got the expo to wang finally. its go the 4 PG 15's and about 3 grand in watts for the subs and the windshield wipers are now jumpin off the window and it feels liek your in a wind tunnel. I smile every time i get in it and blow my ear drums out with it. what? huh ? what??? dude i cant hear you speak up. Slayer sounds really good in it too. but i gotta love jammin some ying yang too. it will be at the march 27th import life tour at COBO hall in detroit. so if you can, be sure you guys get out there to check it out. Its ugly but it wangs. Im working on the fiberglass install still the guy that was going to do it went out of business. so theres a new cat gonna make…

Can anyone make one for me? I'm not very good with sketchup or the cutlist plugin.

I just bought a 18" FI BTLN2 and was wondering what is the best way to build my box. It is going in the back of a '97 nissan pathfinder. I know you need 3/4" MDF for the box but can you use 1/2"? thanks

Is the correct way the measure a port that has a 45 in it or do you measure like a standard L-Port.

think this is a good stasrt for a moderate sq set up i have a kenwood 6019 indash focal 165 6.5 v2 pollyglass componants focal 6.5 pollyglass 2 way coax. kicker zx1000.1 kicker 350.4 an 2 re se 12's subs. im thinking of swaping amps out to something more powerful but is this a good start?

Im about to start building my box today, and i want to know the right screws and glue to get for it. thanks for the help.

I found a sweet deal I just picked up a killer old school soundstream Rubicon 1002. The blue one. It does 250x2@4 underrated, and 1000x1 at 4 ohm and 2. Will be PLENTY of power for the old front stage. And just a all around sweet amp And I've seen them sell for $250+. I got it for $85... nice...

This guy is nuts. Many of you have probably already seen this but it was my first time coming across it... Dodge Sprinter

i need to build a box around 2 cubic feet tuned at 33 htz with a maximum height of 17 inches, does this look right? also, sub up/port back or sub/port both back?

I build ported boxes on a pretty regular basis using the re enclosure calculator and they are always slot ports but i want to build a different box that uses a square port that isnt a slot port but I dont know the formulat to calulate the port area or convert the round port to a square port can anyone please give me some insite on how to do this please thanks alot .

If you're building a downfire enclosure, how do you calculate the distance from the floor? I've searched and haven't found a definitive answer. All i've found is calculations for woofer sag and "just do 3"-4" from the floor." Half the radius, or plus 5% of Xmax... What? Help please! Thank you.