SPL & SQ / Fabrication

I am looking to have a ported box made for my 15" FI Bl and have looked into the group buy for khaotik enclosures but the box specs wont fit in my car. im looking for somewhere around 4 cubes sub up port back and am limited to 34" wide and about 14" tall the depth doesnt really matter. i would also like a double baffle and either some sort of coating or carpet applied to the box. thanks in advance for any advice and help.

ok i posted this on another spot on this fourm but i think i might have put it in the wrong spot....im building a box (hopefully my btl will be here soon) im going with sub up and port back....i was wondering if its would be best to put the sub over the port or closer to the front of the box or just in the center

Building the box tomorrow. 2 JL w7 8 Inch subs (sold the 12's, these are to cool looking). Sealed or Ported? Used for Rap Music. These are each being powered by a JL 500/1 until I order Sundown Amps.

I don't really want to order this stuff and have to wait for it so i wonder if i be alright using some things just lyin around the house? The space i got to fill isn't too large really. IT's about 3-4" wide and about 8" tall and the deeper the better. I was thinkin about stuffing all kinds of shirts that i dont wear anymore in there.. I'm sealing a wall and i gots to seal around a window and i'm not spraying foam on my glass so thick material is the only option. You think shirts or blanket sheets will work fine?.... then i'll just spray foam on this to complete the seal...

There was a video I got linked with a dude talking about his SQ comp car that had liquid cooled subs and amps and a reservoir in the back?

if i bought 10 of these and made a super big ported box ( i think they are supposed to be IB?) would it sound worthy of the money i spent (slightly more than the daytons)? spl is more imporant, but sq cant just be dismissed. I found a ultra cheap in-wall 8" subwoofer. 22 bucks. thump option 2 I would be using those instead of four dayton 12's Boom option number 1

I have loved my 18's since I got them, but due to a baby being on the way, I have to get rid of the 150 pound 12 cu.ft monster in the back of my little XUV. I'm replacing them with......(drum roll please)...... A pair of Critical Mass UL 12's! I hope to god that they fit the bill for me output and soundwise.

When Calculating port length, How can you enter the box volume after port displacement, without knowing what the port length will be. Or do you put in what you want your box to be after the displacements and then design a box that takes this into account. For example, if you want a box to be 4.5 cuft. after displacements you would use this to calculate the port length. Then after you have that you would calculate the port displacement lets say is .5 , SO you would do .5 + 4.5 to get 5 cuft., then design a box that is five cuft before port displacement and use the port length that was calculated to get the desired tuning? If someone needs further explanation please ask. …

Here is the show for an invite to Finals event_102404.doc

in a 4th order bandpass, is it generally better to have the magnet in the ported section or the sealed section of the box? it seems like you would get added cooling from having it in the ported side, but would the motor obstruct airflow to the port?

how much do you think a setup like this would cost i just want a wall going across my trunk (for 2 12" RL-P's) like in the pictures and maybe when i fold down my seats ill put some plexiglass so you can look at the subs but if it costs too much then its out of the question

I was looking @ this video and this guy made this video with 4 15s and it was 2 of them at the top and 2 @ the bottom.Anyone an expert on making these kind of boxes I want one made in my car. here is a link <object width="425" height="344"><param name="movie" value=" name="allowFullScreen" value="true"></param><embed src=" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed></object>

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

hey im workin on my third box build and i want this one to be perfict i need help on the port i wanted it tuned too like 33 htz and i dont know how to caculate that can anybody help me if i give you box demention and mdf thickness ???

I recently got my system all finished and was wondering if there is an app or something i can download to get an estimate of how many dbs i'm hitting. I know some people that have termlabs but i don't wanna drive an hour for a 5 minute test.

i was looking at the 6x6 in aero ports at parts express but the only boxes ive ever built have been slot ports so i dont know anything about it, how much air do they displace?, or how do i get a turning freq. with them, and just the basics i quess? idk thanks for any help guys

i have a dcon 12 in a sealed box Internal box volume: 1.2 cubic ft Box Dimensions: 14-1/4"L x 14-1/4"D x 14-1/4" H Its amp is an mbquart 400w rms in a chevy 1994 blazer. it goes pretty hard but from what iv heard, it can go louder with a bigger box and a ported box. its facing the back of my car. Could i get some help on how big to build it / all of that kind of stuff? like dimensions, volume, ported size. i might take it to a local audio shop and have them build one but i don't know what sizes and stuff.

I'm planning on building a wall in my Lumina, I'm in need of a design. My set up will consist of 1 DC power engineering 270 amp alternator,~3 deka intemidators, 2 Audioque HDC3 18's in a 12 Cuft wall with a removable port tuned to 38 for daily and higher for comp. Lastly to power the subs a Sundown Audio 3000d. here are some specs with pictures included. Pictures w/ measurements Height: 37 in Width: 29 in and at the curve 38 in from the hump to the roof is 38 in 33 in from rear deck to seats 46 in from bottom of the floor to the ceiling 55 inch from door to door More pictures (P.S. I know my carpet is dirty. M5 already made it apparent)

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 .

I need to find out what the correct airspace is with this box. The depth is 20" with the sub facing up. The 36" is the bottom of the box. It's shaped like a "T" to fit over the wheel wells. I know it's kinda crazy, but I need to maximize the room I have for an 18" sub I have coming in shortly. Thx for your help, Vic.

Can anyone design me a box for two 15 inch subwoofers? Two 15 inch SHOK minis. I can go 16 inches tall, 36 inches wide and 18 inches deep. These right here. Thanks in advanced.

So I was looking at pics of banginAltima's Altima and noticed the external aero ports were facing into the car thru the folded down rear seats. I'm building a box for 2 Fully Loaded 15" BL's and was wondering if I can do something similar. However, theres a catch to my set up. I have a 88' Grand Marquis that has a solid, non-folding rear seat. So I was wondering if I could make custom external aero ports thru my rear deck between the 2 6X9's. Would that have the same effect as it did in Altima's car? He gained about 4Db when he re-designed the box and port set-up. Or am I just being unrealistic?

Hey guys, Will be building my first box in the next week or so and I really just want to make it right the first time so i would be really grateful if you could check over my numbers before i go any further. Specs 2003 Ford focus 12" SI Mag re coned with fi softparts. So basically its the same spec as a Fi Q Aim 32 hz @ 2.5cuft (biggest recommended box for this sub) Subwoofer displacement - 0.16 cuft Port Displacement - 0.69cuft (Really didn't know how to work this out! Do you calculate the port as a separate component or just account for the wood that makes the port if so this is wrong) Baffles displacement - 0.10cuft (in my design i have quite a few baffles to brace t…

dont know if it is posted anywhere if so i apologize but i was wondering if anyone here is willing to give me a sweep and some test tones from 20hz to 70hz or somthing please??? i might even gift them some cash from paypal

I'm posting this up again....... THIS time heavily revised, it now has slot port calculations, and CUT SHEETS! This EXCEL based box calculator will take your enclosure size, woofer displacement, the wood thickness you plan on using and the frequency you wish to tune it to and gives you the GROSS enclosure size, dimensions (Including CUSTOM dimensions in which you input two of the OUTSIDE measurements and it gives you the last one.) PLUS gives you the cutout sizes for each panel of the enclosure you just asked for....... I'm putting it out for real world testing to be sure the math is good and the cuts are helpful......... Let me know ASAP what you think and what proble…