SPL & SQ / Fabrication

ok i have a 2002 dodge dakota extended cab, and i was thinking of putting 4 SA-8's in the back area after taking out the back seat. i will get the D4 coil configuration and run 2 off a dsc1000.1 and the other 2 off another dsc1000.1 (each sub will get 500watts) now i have no clue how to design a box, the only other ported box i made someone else designed for me and i built it. i dunno max dimensions of the box but if you tell me how many cubes it has to be i can figure out how to make that size box fit where it needs to, also for the "easy" factor id like to use aero ports instead of a slot port design, so what size and lengh aeros would i need? and where can i buy thos…

Well looks like I will end up with 17.87cu before bracing and sub displacement. I really want to end up with 17cu total after. This is for 2 18in FI Q's on 3k watts. Box dimensions will be Outside 35h x 54w x 27d.... All sides double 3/4 MDF except front baffle will be triple. (may use some Birch for weight reduction) Usable inside demensions are 32h x 41.5w x 23.25d = 17.87cu Port is 8 x 32 = 256in total Sub displacement = .24... but I will be triple baffled so what maybe .22 or less?? Total of six 2in hardwood dowels for bracing =.35 2in wide 45's in corners =.10 So this leaves me with 17cuft tuned at 30hz after all is said and done. I may glass the inside as well? what…

I would like to know how many or even if anyone uses a 4 inch aeroport for a 12 inch sub without any problems. Reason i ask is because i built a 2 cu. ft. box for my audiopulse axis with a 4 inch aeroport tuned to ~34 hz and it sounds fine, only up to a certain point though. I don't like the noise it makes, i guess that's what chuffing sounds like and i can't stand it so i turn the volume down. I was also only using a saz 1000d on it with absolutely horrible electrical so there's no way i was reaching its limits with it's insane power requirement. Now i know for a fact that that's not enough port area but i would still like to know if anyone uses a 4" and gets away with …

Just finished my new install, a 12" xcon in a 2.75ft^3 box tuned to 31hz. This is in the trunk of my 96 Accord. I listen with the seat down so the sub and port are firing into the cabin. All my boxes and setups have taught me that each setup is very different and showcase different songs better than others. The "show off" songs that sound awesome on the previous setup don't usually sound as good when you change things. I get that and accept that, but now I have a new issue. So after I got my xcon playing I was setting the gains and playing around with different songs and was not super impressed, it was loud but I knew it should be louder. so I popped the trunk to go bac…

Tomarrow I will build a new box for my new Xcon 12. I have two designs to pick from, one will be 2 cubes at 30hz and other will be 2.4 cubes at 30hz depending how much room I want to give up. (or anywhere in between I suppose) When I first got the Xcon, I put it in the box my Death Row was in. About 2.1 cubes at 31 hz, with 25^2 inches of port. There was definately some chuffing going on. My new box I want more port area. Max height of port will be 12.5 inches (14inch max height for box). Will either do 2.5 or 2.75 inch wide, for 31.25^2 in or 34.38^2in. Will either of these help with the port chuff I experienced with my old box? I know the bigger the better usually…

Has anyone ever had 2 boxes or separate chambers with 2 different tuning frequencies? ie. 2 subs, 1 box/chamber @ 26hz other @34hz. If so, can you explain your thoughts on how well it worked or didnt work for you. I was thinking about this option, but I am beginner enough to not consider all of the pros and cons in depth. Thanks for the input.

im going to make a box for a fi bl 15 and punched the numbers in the re box calc. and the size and hz was way off what the picture says. i mite just be being paranoid but id like to know for sure b4 i go spending money on wood for a box that isnt what i want...u know. thnx in advance ~Bill

Is 180 a good price for a custom box from audio excelence. It was made for someone else but he said hed sell it to me for 180 its a big ported box thats tuned to 45hz thanks for your opinion

I recently got a great custom box by Audibel Customs for free but I was thinking about building my own fiberglass/mdf enclosure. The only reason I went with Audibel Customs was for the free enclosure if not I would have gotten the Mach5 IXL's. But the Custom box Quentin built is great and hits hard. I just need more space. What I plan on doing is making everthing mdf except for the base/feet of the box. The reason is because my truck has a lot of bumps/curves on the bottom behind the seats and I can gain some airspace in order to do 2 SSA Icon 10's in the future once money comes. I have learned/researched alot of other build logs on fiberglassing and think I have the capa…

Current setup is Mach 5 MLI and Seas H1396 amplified by an Eclipse EA4000 and all the processing is done by my Alpine 9813. I'm very satisfied with the midbass output and the top end, it's just that midrange isn't cutting it After seeing Ryan2's idea with the Fostex FF85k's I thought trying a pair and ditching the tweeters. I don't want to invest in the H701 at this time and try 3-way (would require some sort of controller too and another 2 channel amp, not to mention the extra room ) The problem is placement. I have no room in the dash to mount them. Pics of the "locations" : One idea is to use the kicks. Passenger side is ok, driver's side could work but there's v…

Hello again! Wanted to have a quick poll/question. So do most of you use MDF or HDPE for door speaker applications? I know some people won't touch any plastic for audio, but some would swear by some of the high quality stuff like HDPE. Your guy's votes/opinions?

Looking for some help with an enclosure for a 15" xcon... I could go sealed but I need the help of you gurus to figure out how to get it ported Currently I have the Xcon in an enclosure that is roughly: 32" w x 17" h x 15" deep ... I have a 2016 Mazda3 hatch. My max dimensions for depth is 19.5" but that's only keeping a flat wall, I'm wondering what can be done about having the enclosure sort of follow the back of seats at the present angle. Like so but less aggressive of an angle obviously...: So my hopes for the enclosure are: 1. Ported - 6" PSP port 2. Max dimesnions would be W-26" H-20" D1(top side)-19" D2(bottom side)- about 2…

I've thought about doing this and recently seen someone actually use this method but never commented on how good it was. In instances where all-thread cannot be used.. how about running those flat steel bars that Lowes sells on the inside of the box? Those are humanly unbendable.... it's steel. I was thinking about running those, gluing them to the box, drill out contact points, maybe 1 every 12", run bolt through to the outside, threadlock it and use a large washer on the outside of the box with a nut of course. Seal around the steel bar. These bars, if i am not mistaken, are only like 1\8th" thick. Shouldnt' that make the wall it is attached to hella strong? I see n…

Has anyone ever built, seen, or heard a deathbox enclosure? I would like to build one myself but have only heard about deathbox and I never found the build plans. I would like to test the enclosure with a 10" mtx woofer and see what the enclosure is capable of. I stuffed the mtx in a sealed enclosure and it produces tight bass but nothing fantastic about it at 300watts. So if anyone knows where I can find the build info for the deathbox, I'd really appreciate it! Or let me know if you have ever heard one in person!

Crazy, stupid, or cool? Thinking about doing wall with 2 18's. Not for spl, just daily pounding.

I am looking at some new midbass drivers and it looks that they should be ported. So if and when I build this enclosure in/on my door is there a recommendation on where to point the port in this application? thanks in advance.

Hi i've had my fi btl in now for over two months and although im fine with it i've noticed its not hitting the highs quite as well as i want it too....but the lows are exremely awesome i have the box tuned to 33hz could that be the problem...any help is appreciated.

I have been reading on t-line boxes for a good 2-3 hours now and am just not understanding the design part 100%. Only one that I have read and felt like I somewhat understood was the "u-shape" style design. I have always done slot ported boxes and was always happy. I think it is time for me to learn a little more about boxes. So far, this is what I have grasped Say I wanted a box tuned to 34hz. I would take 1130 (the speed of sound,) divide that by 34. Which would lead me to 32.25ft (rounded a tad). I would multiply that by .25 because I am looking for the 1/4 wave length. I would need a port 8.0625ft long. And SD equals port area? Also I am aware this is not a full t-l…

I have a gmc Sierra ext cab and I have a half wall box. How could I secure it so if I crash it doesn't kill me?!

skip to about 9:30 to see them take apart the speaker box, or watch the entire video if you want a good laugh. I've never seen anything like this in my life. And I thought the chevelle that Meade fixed was bad LOL it does not compare to this http://www.youtube.com/watch?v=AKH23bamIKU

I have a number of questions that I was hoping someone with experience can answer. I'm currently running a 15" BTL off 1600 in a 4 cube enclosure at 33hz. I feel like I don't have enough port area- i'm using one 6" aero which gives me 28" of port and 7" per cube. Do you think i'd have a noticeable difference by switching to a larger 8" port? I already bought the port, but don't want to destoy my old box if there wont' even be a noticeable difference. I'm hoping to achieve better lows...I figure that my larger port will give more output/peak at my tuning frequency of 33hz, hence giving me a better low end. In doing so, i'll also gain slightly more volume in my box (…

I have never done a wall before, and i am really interested in them. If its not too much trouble i was wondering if i could get schooled on them -- how to prep a truck for a wall, the do's and dont's, bracing, etc. etc. etc. I would like to become confident before going balls deep into this build and I don't want to be slapped in the face by how little i know half way into the build, ALSO i want to know what i am getting myself into before i start cutting. (ported, 10-20 cubes) i seen the build a wall build and it had a SHIT load of 2x4s.. would i have to do this to my truck? The truck will be a 1986 GMC Sonoma (S15) ext cab and the equipment is 2 or 3 (depending on how …

i did a 149.3db this weekend got 1st place my 4-15" box was still wet ! the FG Resin had not dryed and i had no time to brace the boxx i beat a guy that had 16 > 12" subs he had this he got a 148.9db & 2nd place

I'm running an Fi BL 15 on a sundown sae-1200d in a scion tc. Bought a prefab box for it a couple of months ago but im looking to get my system as loud as possible (currently upgrading electrical as well). The box seems to be tuned around maybe 50hz or so, as in Young jeezy's song "white girl" (i believe it has a 30hz note and a 50hz note) and the 50hz one hits way harder than the 30. If i built a new box, and tuned it to around 33hz, in that song it would be the other way around having the 30hz note be the louder one correct? Heres the box that I have now: http://img841.imageshack.us/img841/1833/img2746u.jpg How much would it cost roughly to build a new box like this (s…

Hey guys! I did a bit of reasearch but couldn't find a good topic about this. What do you guys reccomend for some good box building tips for the best box possible? Not like designs so much (Although if you wanted to post set-ups such as like...Explorer, sub up port back (as an example) that might be helpful to some), but things to do in the box. Things like: Rounding the port edges to flairs 45 degree angles in the corners for standing waves placing the subwoofer so its at the back of the port length where to add braces so that turbulence is minimized (or using rod threads or your favorites) those were a few I could think of as example and I'm not even sure if they're al…