SPL & SQ / Fabrication

Hey guys, I know iv posted so many topics about my box but its time for another one. I WAS going rebuild my box for my 18" BTL N2, and make it closer to 7.5 cuft net. Iv been thinking about future upgrades though, and im thinking in the end of it all ill be powering my BTL off of two AB VFL 100.1's strapped (3000wrms). Now with that much power to my subwoofer, would 7.5cuft be a little too big? Iv been talking to one or two people about it and they said it might be a better idea to keep it around 5.5-6 cuft with that much power running to it.

So I ordered a BTL 18 today, and I think I'm going to base my enclosure off the one for the XCON optimal one thats here on the site. It says that box is tuned for 30 hz. Fi recommends tuning to 32 hz for the BTL. I don't really figure that the 2 hz will make that much of a difference, but I could be wrong. What I'm planning on doing is putting the port on the other side of the box, so that the driver would be facing up towards the roof of the vehicle, and the port would be facing forwards, toward the front of the vehicle. My question is will putting the port on the wider side of the box, (25.25 in. vs 22 in.) put me closer or farther away from the 32 hz? Also, I'm plannin…

so i did a quick little search, but i am a bit slow and tired and i didn't find anything. i haven't built a box before, nor helped anyone build one.. but i've pretty much decided for my first box to tune it at 32hz, and on the Fi section of the forums they recomend "1.8-2.5 cubic feet".. what does each mean, like how do i know what i prefer. basically waht i'm asking is when the box is smaller, what does that mean? tighter bass? higher notes (roughly)? what. and then it recommends 32hz, so i'm going with that.. but how do i tune it to 32hz? i don't understand how to tune it using the box. or is it a setting on the amp/sub. if you couldn't tell i've never done this before,…

Hey fellas. What's going on? Alright, heres the deal. I picked up another CVR, so I am now in the process of deciding what I want to do with the new box for the 2 CVRs. This setup is going to be a pure daily driver, no competing or anything. I listen to all rap or hip-hop. Now, I emailed Kicker and asked what they thought the best daily driver box would be and they sent me some specs that ended up being tuned to around 40 hz. I thought 40 hz is pretty high for daily driver tuning. I PM'd Polecat and he said that 40 hz would be good and that I wouldn't lose much low end and that it would get loud and sound musically good. My current box for my single CVR is 34 hz and I am …

Hello all . Im in beginning stages of design for my 2002 PT Cruiser Enclosure. This will be my first year competing in the lanes for SPL. I know its correct to have a daily box and a burp box, but I would like to get as close of a mix in one box as possible. My initial thoughts would be to have subs facing up and slot port facing up as well because of the lack of room. So far I am just looking for any advice I can get. Max Dimensions: 39w x 20h x 14d. Would prefer port in between subs but If it doesnt make a difference, im flexible. Am I on the right track? Any help would be appreciated.

Ive been wanting a 6thorder for a while. I wanna try to build one for one of my sundown sa-15s i dont how big to make the chambers or the tuning. I listen to all rap and songs with low bass. Idk what do do someone help me. And what types of wood can i use?

The guys at kicker said to tune to 39hz for 4x12" CVR's in a 9sq foot box. I don't see many people tuning much higher than 35hz though. So should I take their word for it and tune for 39hz or drop down to 35? This is my first ported box so, I'm somewhat at a loss.

When you build a box with a swapable port, how to you determine internal box volume, as in, what it needs to be once the port is in? I'm going to build a box for the BTL that's 7.5 cubes and want three different ports, 26hz, 34hz, and one for whatever my peak frequency in the vehicle with be. I'm not sure, but wouldn't the different port sizes also affect tuning by changing box volume? I feel like this is really simple and i'm just punching myself in the face here. What am I missing?

i was thinking something like this non walled with a 2:1 ratio at 50hz? or do u think my setup like this would be louder?

looking to buy a saw blade for my circular saw to cut my MDF. i was going to have lowes cut it, but i can't quit worrying that they will mess it up so im going to do it myself. i have been told to get at least a 40 tooth carbide tip blade....i am only going to use this thing once so i dont want to put a lot of money into it. i was thinking getting a higher tooth count blade, just not carbide tipped. i was thinking like a 120/150 tooth blade....would that work well? is the carbide tipped that big of a deal?

so my friend tried to paint the box he made for his girlfriends jeep black, but where the screws are its all messed up, and the paint is dark and light in some places and fades alot and doesnt look that appealing all together, i figure i could just use woodfiller for the spots for the screws and sand it down flat, but what about getting all the paint even and pretty? need to make one for a guy i know and he wants it painted so anything will help, thanks

There are 2 drivers in each side wall that would acoustically, i assume, act as port length. So, if that's true, does leaving just the opening in the back act as length of the side walls which is ~25" long? also, i've never had the time to question these types of designs but does anyone have anything negative to say about drivers in the side wall like that? I've seen pretty much all different kinds of setups throughout the years and this particular one is not new either. I just don't understand what actually is going on when the front wave of these side wall drivers interacts with the port(2nd question).

In the process of designing a box for the 15 Loaded BTL. Can I design an "L" slot port box to have a tuning freq of approx 40hz for comps...and then just put 1.5" thich MDF along one side of the port? Since calc's tell me that will bring me down to 32hz. So the port will be approx 6.5 inches wide for a 40hz tune and 5 inches wide for a 32hz. I'm just wondering because only the last 14inches or so will be 5 inches...the other 14ish inches (inside the box) will still be 6.5 inches. Will this screw with tuning...and will this raise or lower my ACTUAL tuning freq?

Looking to get max spl in a trailbaler on a cadence a7hc. 1200 watts 1 ohm. I would like bass on all types of music. I have a 4" aero port laying around that i could use. Shoot me some ideas.

Looking to see if anyone can design a box for me. Gimme a layout and dimensions and whatever else would help. Don't know if anyone on here just does free ones because they like to help people? or charge a fee. Just let me know if you can help me. It would be for a single Xcon18. Thanks

So i went to the new shop opening up in my area and got to talking with the guys there and well one thing lead to another and i was cramming a box into the backseat of my volvo. Did i forget to mention it was for free? eaa free and after something ive decided on building a wall, yea not alot of people do 1 15" or 1 18" in a wall but this box fits no where else so why not? This box seems well constructed and after building my false floor which i am going to start with the new friends i made at Kustom Tints and Graphics 2, i honestly cant wait just because i liek how the box looks but im not sure if I AM A just kinda bolt the box down or build a baffle over the front and ma…

Would two 6" aero ports be too much for 1 - 15" Xcon? In June I'm looking to fix suspension AND put the bump back in the Camry... Porting it and sealing it from the trunk is the plan ... bow would be about 3.9 cubes with two 6" ports tuned around 33hz.... will be lower power for a while (500w) and later on thinking of going to something better...

just like it says if someone has experience with a 72' bug and or a BTL 18 I am looking to redo my box and need design help. Please PM me on here. I just know I can get louder than 144 with a exile 2400.1 and a standard BTL with cooling. Thankx MC

Ok so Im putting 2 12" xcons in the trunk of my grand prix gxp max dimensions are 35"W opens to 55"W 15"H 40"D. I want it ported what do you guys think would be the best box type of port which direction and so on I wont be building it but I also want the best and the builder Im using can do it. It is not a comp car however I play my music loud everyday and I want to be heard

Hi all, I have 2 boxes that ive built and i am in the process of testing. ->build log here<- they both have the same interior volume and tuning and all that good stuff. so the internal volume is about 2.45 cuft with a tuning of ~34 hz with about 40 sq inches of port each. now i had a box that was 2.5 cu ft tuned to 34 hz with 39 sq inches of port and didnt get much overexcursion. so heres my problem. on low notes like 28-34 hz the sub barely moves and creates ALOT of sound, im very shocked by this. but when you get to like 36-40 hz the sub reaches its limits of excursion and anything above 40 its just bottom out city! im very scared about this because in the o…

I plan on walling off my 00 Grand Am soon with 2 18XXXs (05 model) and I was wondering if anyone could help me out. I have a couple measurements... 41w x 34d x 34h That's the external (gross) measurements. I plan on tuning it around 30hz. I was also wondering where to put the port. This will be my semi daily driver (I have 2 vehicles), and I am not looking to hit any high numbers. I want this thing to get loud and low. Also any kind of tips/pictures/diagrams/explanations/ect. for a wall and dancefloor would be greatly appreciated. And yes, I have put some effort into this by reaching out and contacting many people so please do not respond in here if I have already …

im trying to design a box for 4 sa-12's and i want to make sure its not too big. its 8.5 cubes after all displacements with 108 sq inches of port area. ill be powering the subs with an AQ2200D so each sub will see roughly 550 watts, which is why i made the box slightly bigger then normal, i just wanted to know if you guys think this sounds ok. ohh and it will be tuned to 32hz

I discovered this on a Honda forum that someone had posted, the description of the box are in the web browsers little tag (this is how it is using firefox). They range from 1-2 subs, and 2 cf all the way to 4/5 cf. The tuning is a little high on a few of them from 35-37 hz, but theres some lower. I think this may help a few out, Sub Box Diagrams

I am currently taking advantage of the Audibel Customs free enclosure special and getting myself an SSA Icon 12". I am going to be going with a ported enclosure, and Quentin is currently working on my design. the first design he had was with the sub on an angle, firing towards the hatch, and port firing out the top. I had envisioned a upward firing sub and port, and a raised sub floor in the back to make it all flush. Now I realize that the box is just going to be so big regardless that the sub floor idea went out the window. I am only concerned with it hitting hard, going deep, and being able to keep up with my tastes in music. I drive a '05 Scion Xa, 160 amp alt, 0g …

Someoneon here linked a tool that cuts PERFECT circles. It was an attacent for a drill. Had a shield to block the saw dust and everything. Can someone link it or find it? I'm on mobile and can't use the site so well