SPL & SQ / Fabrication

Ive made my own ported boxes in the past but nothing more than a rectangular ported box with f-glass. I dont want to pay a shop to make my box, I want to build it myself. Its a 2000 grand am. Back seat obviouslly removed. I dont really understand how to do the edges and different angles. to take up ALL the space. Or do I forget angles and just do what I can. I was going to do it all in fiberglass but that is probably a stupid idea and a stupid amount of work. The only other problem is how to calculate volume with so many different angles and how to exactly calculate how to measure the bracing and port volume. If anyone has a site to direct me to that deals with Wall setu…

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.

OK i got this box made 4 yrs ago for my other car but it was a ported box for 2 12's. It was for 2 pioneer premiere ts-w12prs subs. Now i am not sure what the sub actually calls for on ported box but the is a review & Klippel Data on this sub here http://www.diymobileaudio.com/forum/...newthread&f=24 Its a slot port box btw The box is pretty big Here is the outer dimensions of the box Height:12.5 Width:36 Length:26 I am using 3/4 mdf wood Here is the port length Width: 4.5 Length: 11 Depth: 18 Here is the specs of my w12gti's http://manuals.harman.com/JBL/CAR/Bo...2GTi_rev_f.pdf I am currently using this box on 2 w12gti's with a sundown 1500d at 2 ohms which is 80…

to seal this gap inside my box....if i glass it, whats the absolute BEST way to approach this, so the glass doesnt ever pop off from the bass over time?

I'm thinking about doing something that I've only see Steve Meade do, on a much larger scale. I want to build a small setup to just listen to music in the garage with. I have a cheap set of Pyle component speakers that I can use.. I'd like to build a ported enclosure like this. They would be ran off of a really old 100 watt 2 channel Pyramid amplifier. I do not plan on adding a subwoofer to the setup, just this set of components. Since this old amp doesn't have any sort of SSF, HPF, or LPF, it's playing a full range. I will have a crossover for the tweeter, but the woofer will be seeing even subsonic frequencies. I'm thinking about using 1" PVC for a port tuned around 40h…

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.

Alright so my box is 5.38 cubes internally after the displacements besides the port. Im using a tube port thats 8'' diameter and I want to tune to 32Hz. My box only has about 20 inches of height to work with inside, so some of the port will be sticking out the top. I want at least 4 inches between the port and the bottom of the box. If anyone can help me calculate it out that'd be appreciated.

im building a box for a Pioneer TS-W1207D4: 1.65 cu ft 3"x5.5'' port displacement: 0.076 the box ive built is about 1.9ft^3 without any displacements. i'm assuming the 3"x5.5" is the port area and i just need to calculate the length? if so, how long do i need the port for ~35-38hz?

im building my third box but first wall and i always wonderd if when i calculate the cubic feet of the box do i subtract the port cubic feet??? i have come up with a box thats 17.5cf but the port is 2.4cf and each woofer is .25cf so its like 14.6cf .please some one correct me if im wrong im not to sure

ghs_wrestler 189 and I went to a local comp yesterday and they were using an old K & M mic that had been calibrated by Audiocontrol, according to the JL rep there. Somehow we went from 143 dB on a new Termlab with 5.1 cubes @ 36hz to 131 on this mic with 5 cubes @ 46 hz. Everyone was hitting kind of low, but there were people there that I guarantee would not have done better than us, but did. Any suggestions?

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. …

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)

car- lexus gs300 music- hip hop and rap sub- audioque sdc2.5 12 amp- jl audio 500/1 max height- 14.25 port tuning- figured 38 max depth- 14.125 max length- 31.125 using .75 thick mdf i get roughly 2.75 cubix feet.. so i figured with sub displacment and port i would be at about 2.5 which is what audioque is the biggest i should run the box.. now with the port i put in 2 inches wide by 8 inches tall and i would need a port length of 7.51 inches.. now my question is does all that sound about right? should i have the port longer? when i did the port at 14.25 tall and 2 inches wide it said i needed a port length of 14.71.. basically just looking for some advice on what to do…

First post, Please bare with me. I did a search but didn't find what I was looking for. 2005 Ram 1500 Quad Cab My truck is all set-up with highs, deck, EQ, Kicker ZX.1000 amp (~1150W @ 2ohms). Looking to run a 12" BL Dual 1Ohm. I listen to mostly rap and hard rock, looking for a good box for the daily driver, I'd say mostly rap, real deep lows but I'd still like to hear the kick drums. I've never built a custom box before; I'm looking at 2.0 ft3 slot ported box @ 32hz. Will this limit the sub from reaching its full potential? The amp puts out real good clean power, I'd like the best possible box for my truck. Are there any pre-built boxes that will work well with …

Hi, I've read everywhere I could, but I get very different informations!!! My enclosure is about 4 ft3 and has a round 5.6"(diameter) PVC port; port length is 14". It sounds good, but I 've read that port area should be much bigger : 4 (ft3) * 15 = 60 sq inches. And my port is far from that. I don't really know the actual tuning, but I would like it to be around 30-32 hz. Do I have enough port area ? Or enough length? Enough port ? Please, help me !!!

I am wanting to try building a enclosure with a flared port and was wondering exactly how to do it if anyone can help with this i would really appreciate it.

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 ???

Is the correct way the measure a port that has a 45 in it or do you measure like a standard L-Port.

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

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 .

if any of you guys can give me an idea of what type of box works best for an early 90's cavalier station wagon id appreciate it, im a trunk guy and dont really know what works best in that type of vehicle, aside from a wall what do you guys suggest? the box will house 2 DD9512's dual 1.5 ohm subs and be powered by a single earthquake d10.

If you're building a downfire enclosure, how do you calculate the distance from the floor? I've searched and haven't found a definitive answer. All i've found is calculations for woofer sag and "just do 3"-4" from the floor." Half the radius, or plus 5% of Xmax... What? Help please! Thank you.

Needing recommendations on any and all used or heard systems with excellent SQ that have either personally blown you away or proved themselves in competition recently. Any info and opinion on the following are welcome with my proposed equipment in () Wiring thru KNU like always, damp pro like a pro, BIG 3, H/O alt if needed(pref not that much draw on a TL) and upgraded battery as install dictates. OEM integration - a must for this build sadly(360.2 by RF) sound processors (audio control, best model for needed corrections) component speakers - 2 sets F/B most likely fiberglassed to bring soundstage up (CDT, have loved every set I heard if installed right. Perfect for all s…

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.

okay, well I got some money for my birthday, and was thinking of picking up some mdf to build a ported enclosure for the SUV. Single 15" sub off of 600 watts. mfg reccomended optimal enclosure is 4 cubic ft. tuned to 34 Hz. My max dimensions available are 38.5" W x 24" D x 18" H Here's what I was thinking: 38.5" wide by 18" high by 18" deep (outside measures, using .75" mdf) Sub up, port back. Port 16.5" high by 4" wide by 28" long (acoustical, physical 23.25" since it will have a bend) gives a gross volume of 5.82 cubic ft, net of 4.24 cubic ft after subwoofer and port displacement, tuning of 33.8 Hz will be adding some bracing but not enough to bring tuning …