SPL & SQ / Fabrication

Hey guys I just recently got two SA 8s and I am getting ready for a custom enclosure. I have been thinking about maybe upfiring them into the rear deck of my new Infiniti M35x and cutting holes for the port and woofers. The only issue is that I did this with some Image Dynamic 8s and wasn't thrilled about the how they sounded. Certain people say that give you a cleaner sound any input? I was also thinking about doing something funky like firing port backwards and subs up like you would in an SUV to see if that made a difference in the trunk. Should I just stick with the conventional trunk box? I was also wondering what people were running for box size (i heard .6 per sub …

To figure how much air a specific subwoofer should need using the information like, (VCdia: 1-1/4" *Impedance: 4 ohms *Re: 3.6 ohms *Frequency range: 45-1,500 Hz *Fs: 45 Hz *SPL: 82 dB 2.83V/1m *Vas: .24 cu.ft. *Qms: 2.68 *Qes: .61 *Qts: .49 *Xmax 9.25mm) and does any one know a good thing or two about designing t lines.

I decided to do my blazer in the dark knight them the sub box is going to be the batman symbol the amp racks are going to be the joker playing cards. I need some help in deciding what to do the door panels and battery and distribution like to go with the theme using to svr batteries and and 2 sets of kenwood excelon 6.5 componets in each door.

its actally about 5.7 after bracing and displacement, is it too big?

Since soon I will be installing a new sub in my truck (if i can ever get in contact with nick at IA) so while i have the 180lb behemoth out of my truck i figured I'd slap the leftover second skin somewhere. Im looking for the most quiet and the most potential SPL gain. My doors have 1 layre on the door skin and 1 1/2 on the door (didnt botehr putting a second layre over the window acess gap incase i ever need to acess the window) I have 2 on the back wall and that helped a LOT. It went from slapping my bedliner to maybe 1/2" of movement full tilt. I feel much more comfertable upping my SPL now that my back window isnt dancing...as much. The floor and firewall would proba…

I like to think up things i haven't never seen done so let's get some opinions in here because i wanna see what people think how this would work - I don't feel like drawing a pic so i'm going to rely on your visualizations to see this box in your head. Let's take a 12" sub. Let's put it in a ported box at 2.5 cuft. Tuning... thats the interesting part. Ok, so build a box with 5 walls, not 6, 5. Leave the rear wall completely off. Now, let's say for quick number crunching, the box is as follows - (all external) 16" wide x 16" tall x 16" deep with no rear wall. Now, let's build another box with no sub cut out, again with 5 walls, not 6. Dimensions for this box is as foll…

If I can get enough interest I will be doing an IASCA judge training April 11th and 12th in Santa Rosa. I need to get judges up there before I can have a good amount of shows. If any of you are interested in attending a judge training in Santa Rosa please email me at [email protected]. The training is $100 for both days. It includes a full year of membership in IASCA (which is normally $60). Even if you just want to compete the judge training is a great way to get a full understanding of the IASCA rules. When you consider that you get the membership it boils down to $40 for 2 days of SQ instruction. Schedule is: April 11th 9am-5pm -IASCA philosophy -IASCA classes and …

anybody on the north shore mass or southren new hampshire area with a meter who wouldent mind spending some time playing with my system. got a few bucks if nessasry

Could I get the same output if I use aero tubes on my box instead of a regular port? I want to get a 9cuft box for the new 15" BLs. Would the aero tubes make the gross area of the box smaller because I want the box as small as possible but still have about 9cuft of area after displacements?

What % can an enclosure be off on recomended net cubes. I thought I remembered reading 10% somewhere. It's a daily driver.

Whats the best agent to apply ur carpet to your enclouse?

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hi all i recently purchased a fi q 18 to go in my 95 4 door explorer and now i need to come up with the plans for the box so i can start building. my maximum dimensions for the box are 40 wide by 40 deep by 22 high. i am a some what skill full carpenter but i need help in the tunning area. also if anyone has a similar setup to what i will have and still has the plans lying around i would greatly appreciate it or if someone could use or tell me where i can find a box calculator to spec out this box that would also be greatly appreciated. oh and lastly i am open to using a t line but would need the plans to build one. …

I am designing a slot ported box for a bl15 fully loaded. I am looking for 4.18ft^3(4.0 after speaker displacement) @ 32hz. I just need to make sure I got my measurements right. The dimensions(external) are (H)19.5 x (W)45 x (D)14.5. The port is (H)18 x (W)4 x (L)38. Am I right? And is 72in of port area to much? Oh yeah 3/4 mdf is the wood I'll be using.

Ok, i just bought 2 Fi Q 15's with BP Power and a AQ2200D amp for my truck. I have a 2000 ext. cab dodge dakota and am looking for some enclosure help. I currently have an idea for a certain ported wedge design with my amps fixed to the bottom but it is only 6.2 cu.ft. net with 78 sq.in of port. A similiar design can be found here: http://mobile.jlaudio.com/gallery/detail.php?vehicle_id=1095. If anyone has a design in mind, and would like to show it, I can be emailed at [email protected]. Any input is welcome. Thanks in advance for your input.

some one give me a little feed back! ive always thought it was best to give each sub its own chamber then slot port in the middle? lately ive seen alot of boxes where the speakers are pretty much sharing one chamber and L-ported towards the drivers side firing back, is this more effiecient sounding? or is this done so the box can fit better? i have a 2002 accord and i want this setup to be good DAILY. dnt care so much for SQ but more so SPL. meaning SPL to the ear ill doubt i ever see a meter. THANKS FOR ANYTHING GUYS

Just got about everything I need to start the build, so I am starting to design the enclosure. Did some searching on the site and haven't really found the answer to a couple of my questions, so I will post them up here. First the box is going to be for 4 RE SE12's powered by 2 SAZ-1500D's strapped. I have the 1/0 for power and runs, and am picking up 2 new batts for the back tomorrow. This all going in the Suburban. Box size ideally is going to be 8cu.ft. with around 128-157cu.in. for port. Will see if I can fit aero's if not I'll do a slot port and this is for daily. I have built and tried 3 different boxes so far. All peaked between 40-45hz, one box being 2 1…

Hey guys just looking for a little input here I have been doing some measuring and test fitting cardboard templates to see what I can fit behind my seats without having to loss a lot of leg room. I came up with this set up. Dimensions 13”H x 20”W x 5”depth1 x 8.5”depth2, with 3/4 MDF it gives me .646 ft3. The Sundown SA-10 specs say it will do fine in a sealed enclose at .5 ft3 so after displacement I should be right on track with .546 ft3. My only real concern here is the mounting depth at 6” I should be in the clear right?

Have this started on a couple other sites. Been out for awile (5-6yrs). Wanting to get back into comps. I already have 6 MA HK4000ds and a VW Golf hatchback. Also have a buddy selling a couple Americanbass VFL400.1s for a good price. Would prefer to stick with the MAs because I have them. Looking to do 2-15s in a wall. Prefer the street class to save $$$. Have about $3500 to spend. Also what would be some good sub options. I used to run some Apxx's and have seen several motors forsale. Also the RDs I have seen do really well.

My car is a dodge charger,my system will consist of 2 12"subwoofers maybe "maybe 15 inch woofers if they fit.my two extra batteries can go in my spare tire area and my amp can be mounted on back of my seat.my woofers will be running off a saz3500,my question is will my setup get way luder if my box ports through the rear deck?or shold i do a box toward the rear of my car with the ports on the side?i dont mind doing a port in my rear deck if its gonna get alot louder that way..

So I used to run my Fi SSD 18 in a 9cuft box tuned to 32hz (or close, it was my first box build and I had some hard times with it). I liked how it sounded, though it was on the high end as far as box recommendations go for an SSD 18. The thing with the box was that it suffered slight water damage and aesthetically wasn't as pleasing as I preferred. I was looking to either paint it or put some sort of vinyl or something over it to improve its looks, but never got around to it. Another thing that was annoying about the box was how LARGE it was lol. It was initially designed for my room, but was moved out to my Jeep Cherokee. I wanted to keep the back seats up, so the only w…

Hi, just wanted to ask which box would be best for my space and will do the Best Output, I want a box it with a maximum of 4 cubic int. feet. I am going to buy 2 12'' SSA Xcon and I will like to know which type of box (Ported or Sealed) is best recommended for my space and my needs... Thank you.

a box's internal dimensions - 10.5" high 35.5" wide 20" deep If i put a port in it width-wise, slot port along the wall, 10.5" high x 4" wide, and run it across and leave a 4" gap from the wall resulting in port length being 31.5" long + 0.75" for wood thickness exiting box... When i calculate port displacement, do i find the cubic volume of 10.5" x 4.75"(plus thickness of wood) x 31.5" or 10.5" x 4.75" by 35.5" ? Do i take into account the effective area around the port too? because if i do then i would choose the 2nd option above as part of the displacement.

does it matter what side of an enclosure your port is located on ? my sub is mounted in a up fire position on one end and I WOULD LIKE TO no if it makes a difference if my port goes out the other end of my box just opposite of my sub basically firing at the door

I came across a thread on here where a guy cut slices into one side of a sheet of MDF and then he bent it into a tube! I can no longer find it and i wanted to get a better look at it because i was thinking of using this technique! Does anyone remember where this is? or does anyone remember seeing this? Please post a link to this thread! It would be greatly appreciated!!!!!!!!!! <<<<HAHAHA