SPL & SQ / Fabrication

The vehicle is an '89 mustang (hatch). Im wanting to keep the enclosure at right around 10 cubes to keep my imp rise at about one ohm but want a different port placement. it is possible that this may just be a wall but im looking for the best gains, what should i do? the build is with four FI SSd 12's thanks guise.

I just purchased a SSA Xcon 10 and will be putting it in my 350z. My question is.. Would a premade enclosure from "Zenclosures.com" be fine for it? Heres the link to the enclosure http://www.zenclosures.com/Nissan-350Z-Subwoofer-Box-p/z110ar.htm Any input would be greatly appreciated! Kyle

im would like to know if port are is THAT important. freind of mine has a BL 12, he wants to buy a box that another friend built, but the port area is under 12 sq inches per cube. the sub that was in the box before sounded pretty good. just wondering if the port are being a lil small is restricting output or SQ in any noticeable way. its off by like 8 sq inches. thanks

any one with a 2.2-3.0 cu./ft speaker enclosure for sale. it is needed to house a single 12" bl tuned to 32 hz. o fit in trunk of 2006 ford focus zx4. also if no on that then i need a box for two 12's for trunk of same car with same speakers 12" bl fi loaded.......G

Howdy SSA. Haven't been on here in forever. OK so I am looking to create an interchangeable port system for my box. Here is the layout of the box: (Feel free to steal the design) Playing around with my little box designing sheet, I thought about making a system where I can remove an appx 7 inch section of the port wall and insert some custom made plugs to lower the volume of the box. This would be just to switch things around. Now does anyone have an idea of how i can create a moveable port wall? I thought about a slide-in design (a hole cut in the top of the box that would let me slide the wall down in like a dam wall) or maybe a system of rails. I'm just looking for so…

im getting my system installed next week. Am i going to get bored of it after a while? Will it not seem as loud as it was when i first put it in because i got used to it? I am going to run 1500 watts rms. i have a sundown sae 1200d, 12in fi bl fully loaded, 0 gauge amp kit, and im going to do the big 3 upgrade. This is all going in a 2010 maxima

im going to have two FI BL 15s and i want a good enclosure. my max dimensions are 50 inches in width, 28 inches in height, and 25 inches in depth, and i kinda wanted a design plan such as the port dimensions and should i go double or single baffle?

I have 2 sd1v2 10" running on a 1000d. I like the sd1v2s and all but want a little more. Anyone experienced Kicker CVTs. If so will they hit harder than these sundowns? The sd1v2s are sq's, are the CVT's straight SPLs?

I understand that if you have the same setup you need to double your wattage each time to get 3 db louder. My question is when you get up to say 4kw and you have to double it to 8kw to get 3 db louder is there a significant difference in loudness? Is it the same audible difference than say the same setup at 200 rms is doubled to 400 rms.

Hi everyone, My name is Paul Mocan, and i am from Cluj-Napoca, Romania. Adrian_D is a good friend of mine, and one day we decided to transform my 20 year old Volvo 340, in a SPL car... here is what happend. We started with adding a second battery behind the passanger seet, and complettly removed the rear seats. We made a box design with 2 ports, one for SPL and one for music. My car was a wreck. I had oil and watter dripping out of it, but it was a crowd gatherer. I'll come back with some pictures...

ok so i really dont trust most of the box calcs. online so i've been researching formulas and anything i need to know about designing on my own. so anyone with advice please put in your two cents..... tell me if i got this much figured out: 1). to come up with the ft^3 of the box you multiply length x width x height using the inner dimensions. then take the total of that and divide by 1728 which is the in^3 of 1 cubic ft. 2). then to factor in port, bracing, and driver displacement you use the L x W x H on each item and subtract it from the ft^3 3). for box's with a slanted front. for example the top is 5" and the bottom is 15" you find the average of them by adding them…

Plan on running a pair of M1a's strapped @ 2 ohms for daily/bassrace, and @ 0.5 ohm for burps. Just under 3 cubic feet tuned @ 38hz 72.5 sq in. of port Does it look adequate?

I'm currently thinking about building a box for a 12 btl with both the sub and the port aimed into the cabin, sealing off the trunk from the cabin. I have looked at tons of boxes doing this but they all port on either the right or left side of the box. I often have 4 people in my car so this would mean the seats would have to remain up giving the port very little room to breath. My middle seat has an arm rest that comes down and my idea was to have the box port right there so that i can just put the arm rest down and give the port a place to breath. My question is can i port the box in the middle and place the sub to either the right or left of the port. I don't have a i…

Wonderin whats.better for 4 12 sa's d4.They will be going in a 99 crownvic.thank u in advance

I'm assuming if i had one of those woofer testers to pull the T/S parameters of a speaker, it would pull different specs if i took a single DVC subwoofer and tested it wired in series, then tested it again in parallel. Well, i dont have one so i'm gonna rely on those experienced here to relay some info to me. I will be using 4 subwoofers, 2 subwoofers per amp. Each pair of subs are dual 1 ohm. I have 2 ways of wiring this- 1 - Parallel both subs then series them to the amp 2 - Series both subs then parallel them to the amp Is there a difference in SPL potential between the 2? this info is pertaining to a meter, not the ear. I notice when looking at specs of subs, in gener…

due to the complexity of the sides of my box, its going to be kind of hard to build a slot port on the top of the box. i was thinking, instead of a slot port, should i do like 4 6" aero's? (or whatever i need to get the right amount of port area) which leads me to my questions. -if you have 200 (example) sq in of port area, with a slot port, if you switch to aeros, do you still need a ton of aero's to get 200 sq in? or does less aeros equal out to the larger port area of a slot port? -aero ports in a wall. how will this work? i know one con is i dont get the natural bracing a slot port would provide, but ill deal with that, and add some extra bracing. -difference in sound…

Know that my 270A alternator has been ordered I'll be ordering a second FI BL 15 for my car. I was wanting to get you thought on this parameters

Ok i'll prolly do this some time this week or next week. But basicly to put that port in the deck like you guys where saying i would just have to find the total Cu. ft of the whole box. And plug my information into this handy dandy online calculator. http://www.carstereo.com/help/Articles.cfm?id=31 and i should be fine right? not tuning this thing is gonna be hard as hell.lol I already know the length is gonna be like 40in long. but i can make it smaller if need be. And i'm gonna guess and say about 17cu ft. only thing is since its a daily driver and i want to use it for comps, how can i tune it? I mean 45 sounds like a good start, but for daily i dont want it that high, …

Hello, At the moment, I have 2 Kenwood 12's (4 Ohms, 400rms) in separate ported enclosures that I built. It was my first time building a sub enclosure, and I don't think I did it right. I have an alpine MRP-M500 amp running at 300wrms at 4ohms. I listen to rap, and when I play a song that goes really low (Put on- jeezy for example) the lowest note is really quiet. I'm assuming its a combination of the wrong box specs and them being underpowered? I'm planning on getting a new system in a couple months, but until then, I'd like to fix my current one and in the process, I'd be getting another box build under my belt to practice for my next one. My goal is to make it louder,…

I will not be competing in SPL contests, i just want LOUD bass (doesnt every basshead). The sub i will be getting is a Fi BTL either a 12 or 15, unknown due to money, I think a ported box would be the best, but my buddy told me that bandpass boxes are better. He said a 6th order box would be good, i have no idea what a bandpass or 6th order box is. Are they louder for the daily user? As stated in title, the car i currnetly have is a 2006 Toyota 4Runner, in it, i have mids and highs by pioneer, and they sound good.

The Effects of Cabin Gain in Car Audio Have you ever wondered why car audio systems can have so much bass as compared to a home stereo system? The reason has to do with space. Your home has a lot of it and your car audio system doesn't. Because there is so little space in a car the bass notes (which are long waves) build up inside the passenger area. To calculate the length of a sound wave you divide the speed of sound (in feet per second) by the frequency. At sea level, the speed of sound is approximately 1,127 ft/sec. For example, a 40 Hz note has a wavelength of approximately 28 ft (at sea level). (speed of sound)/(frequency) = wavelength OR (1,127 ft/sec)/(40Hz) = 28.…

I need advice on where to face my subs. my current box only fits one way. facing back, it is in a 1996 geo metro and was wondering us anyone had experience with subs back in the hatch. Thank you very much

Alright, so on my quest to get louder out of my trunk, I'm trying to really understand enclosure designs, and how different enclosure sizes effect response, output and other factors. Now I know the general basics, larger enclosures will be more efficient, smaller enclosures less efficient. But I guess I'm looking for some more in-depth information.

Ill have a FI 18 Q here tomarrow , it calls for 6 to 10 cuft box . I have a 94 gmc sonoma ext cab , there will be no back seats . Ill mounts the amps in the back of the seats and one on the roof for the 32 clarion i have ( going in the bed ) . Ive measured out the the box to take up the back 53/23/25 and it comes out to 17 + cuft . What will be the con's or pro's of a box bigger than called for ?

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?