SPL & SQ / Fabrication

First time building ported enclosure, I would have someone build it but I'd cost too much to ship and sounds like a fun project, sorry Argent hmm, scratch that the box volume is going to be 7.66cuft I used the port calculator at 12volt, port width: 30" port height: 2" port length: 13" tuning: 33hz I drew up this pic so that someone could tell me if "B" is part of the port length or what (p.s. picture is not in proportion to dimensions, just general.) So would A+B=13" or is A 13" and B is?

I have approximately 2.6ft^3 before displacements. This box is for 2 DC Level 3 10s. I'd like for the box to be tuned around 33hz, I planned on using a pvc/abs round port. What diameter should I use and how long should it be?

I'm running 1 SSA DCON in a 2.3ft^3 ported box at 31hz, its down firing in a 02 GMC sierra on a Diamond Audio 400.1. It just doesn't seem to hit the low low notes like my last subs, I dont know if its because its ported and they were sealed or if its the Subsonic filter or what, just looking for suggestions. I can feel the lows and the port fires like a hurricane, I just can't hear them that well, it seems to be only below around 30hz, for everything else it slams, and seems to play everything accurately.

I built this for a friend of mine. Its about 2.52 cuft per sub with 40 square inches of port per sub tuned to 36 Hz. The objective was to build a box that filled up the back of his truck. But that was too much air space overall, so we pretty much built a box inside of a box.. The pic of the inside looks pretty sick.

Im having a hell of a time fitting a box into my s10, along time ago i bought a pre fabbed sealed enclosure for 2 12's, downfire design.. fits nicely behind the seats.. well the box is crap and im ready to go ported, i have 2 Re SR12's i built a box for and it was garbage as well.. has anyone built a box for these trucks? mine is a 1998. Im thinking about just going with 1 12" to get an optimal box size. More than likely a Fi BL or Q 12". havent decided yet.. so again if anyone has built for this vehicle or can show me some pictures of what other people do i would appreciate it. Also Im a bigger guy so the seat needs to be as far back as possible (no tilt wheel).

I was wondering if anyone would be able to make a sketchup for this box. and please correct me if my tuning is off. box is 4.33384 after sub displacement. W. 30 H. 20.5 D. 16 wood thickness .75 and the port being 32.5in long tuned to 32 hz with a kerfed radius of 3.

so i have just bought 4 ppi pcx 12'' subs and i need help building a box but im not good at all with knowing how big or long to make my port. i have a two door tahoe and i have plenty of space height 22'' width 46'' and length 37''. here are the specs each sub needs 1.25 cubic feet so 5 cubic feet all together. speaker displacement incuded is already included port diameter 2.6'' (inside) per sub port length 12'' per sub Equivalent Square Port 2.3x2.3 per sub if anyone could help that would be awesome i would also they the box to be around 30 hz's too

** Coles notes: 12" BTL (D2, loaded, Daily). Maximum Dimensions: 31" x 16" x 18". Want to hit the lows better. ** What is required to build a box specifically for lows. Larger box? More/less port area?.........etc. I had a BL last year, and have "upgraded" to a BTL this year. I have two boxes that were used with the BL, one built by Thumper and another I did myself. The PTS box is tuned to 32, I think mine might be tuned lower, not really sure. Used subwoofertools.com back in the day, and it told me it was 32Hz after displacement. It's 27" x 16" x 18" with port 14.5" x 2.5" x ~33". 3/4 MDF. When I put those dimension in RE Calculator it comes up with 29.81Hz (before dis…

Hey everyone, Im in the process of building a new system in my 2002 WRX Sport Wagon. 1. Head unit: Pioneer Avic N1 2. Amp: Planet Audio BB175.4B RMS Power (2 ohms) 195 WRMS x 4 RMS Power (4 Ohms) 140 WRMS x 4 Bridged Power (4 Ohms) 345 WRMS x 2 Signal-To-noise Ratio 102 DB Frequency Response 20Hz - 20KHz Dimensions: 6-1/2" W x 2" H x 16-5/8" L FEATURES Variable Bass Boost (0 To +12DB) Switchable Input Sensitivity: 100mV-2V Or 2V-8V Tri-Mode Operation OBAC-1 Audio Enhancement System Continuously Variable 18DB/Octave High And Low Pass Crossovers Low Level Inputs And Output 3. Front Speakers: Kenwood KFC-P708 65 watts rms 4. Audio integrati…

88120 TI - D3, well really a D4 so thinking some where around 2-2.5 cu ft. @ 32hz off of ~800w rms what do you guys think? Brandon

So this weekend I'm going to purchase another battery and start working on a battery rack\holder for the rear cargo area of my tahoe. I'll be running one battery there, but eventually I'll add more...A couple questions.. 1. Should I use wood to construct it? I heard MDF flexes over time? Would I be better off getting a friend who can weld to come up with something with metal? 2. It should probably be secured to something, right? I'm not sure if I want to start drilling a bunch of holes in the truck...Any ideas? 3. What are the max dimensions of a group 31 battery? 4. Anyone have any pictures of their battery setup and how it's secured? Thanks.

I moving up from an old 200 rms orion 12" sub to 2-fi ssd's with 1600 watts to them ( or what ever my Soundstream will really put down. lol ) Now looking at the follow 2 box designs from here, ( which is super sweet that you guys posted these! ) Box 1. 12" xcon ported Box 2. 12" icon ported Outside of what appears to be an extra dolly of vertical bracing and total port area are the pretty much the same. Of course the overall dimensions are a bit different, but they have the same internal volume and tuning frequency. So which box is better? More port area make a difference when tuning is the same? Any in-site is much appreciated. Got the email today that the subs shippe…

I have been searching around now for a good 30 minutes on how to figure out the bass in a song. I know you use some program and play the song through it. You then select a little bit of the audio stream and analyze it somehow and it will show how low the bass gets... (I am trying to figure out the bass line in song. When it drops to the second lowest, I have never heard my car rattle so much nor my woofer get so loud. The first bass "hit" is at 34.5 seconds. And the bass hit at 37.5 seconds I need to filter out. I see the speaker move for it but cant hear anything)

Hi I need help making a spl/daily box for 4 15s, I'm going with subs ip port back and want it to be crazy loud, I have 3500 rms going to all of them how should I make the port and what to tune it to?

I am new hear but installed my first system in 92. I use to have a hatchback and always used sealed boxes. I always used a slightly slanted boxes firing up at about 75 degrees and about 5 inches from the back wall (t5 inches is all the space I had left). Always had clean and awsome bass but I've recently installed a couple of 12's in a flat box firing directly at the back at 90 degrees to the rear with less success. My question is, Is it better to have a slanted box for rear firing and what is the best distance from the rear cause my trunk is huge and am currently about 10 inches from the back. Thanks for your support …

Hi All, Here is what ive learned form messing around with my Term-Lab and my Daily tuned box (2.5 cuft with 41 sq of port tuned to 34 hz wave guides and double kerfed port). i have learned that the box is loudest firing towards the drivers side of the trunk completely sideways like this: Im hitting a 146.7 outlaw doing this at 36 hz. Ive also tried flipping the box upside down and the port and sub position flipped and it doesnt matter on the meter which way it goes. now im thinking a 40-42 hz tune with aero ports, possibly 2 6" ones. now i want to hit a 150 with this outlaw, i believe it would be simple if i tuned the box higher and get some more control over the high…

If the port area is 32.5in^2 how long do I need to make it to get 30-31hz??? This is for my 12" DCON.

I want to design a ported enclosure with one DD9512g to put in my single cab chevy 1500. I want it to be loud, but also as musical as possible. I have about 3.3 cuft to work with. The enclosure is going to be a center console enclosure. If I find the frequency which my vehicle peaks at, will this help me choose my tuning frequency of my enclosure?

Has anyone ever heard of this guy? And are his designs worth the money? His website is: PWK Designs

So I drive a f150 ext cab with a kicker cvx 15" with a 6 cube box tuned at 32hz. Right now it is powered by this POS sony 1200 2 channel. The first time I metered I did a 139.5 door open. I metered yesterday and the best I could do is a 137.2 The testing was done on a term lab. Now the things that changed: 4 ft shorter power wire than before - better bigger ground - better new rcas - better new bigger remote - I know this wont change anything just thought I'll throw it out there The only difference than before would be the temperature. It is roughly 35-45 degrees hotter outside now. Can the ambient temperature effect db?? Also my buddy metered too and he had a decrea…

I hear that areo ports "trick" the box into thinking that it actually has more port area than it actually has. Is there some type of calculation so I can figure out the effective port area of an Aero Port? Thanks

so i just wired down my fi q 15 to 1 ohm.. and it hits every note really hard.. and i mean really hard.. but it doesnt sound to clean.. its in a sealed box 2.3 cf could it be because the ohm is set to low? should i have left it at 4 ohms?

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…

whats a good tuning for a subwoofer box using 8" for sq purpose and would bring out the best musicality beats for new wave songs? swing out sisters, bizzare love triangle original track, gona get your love, godfinger, reasons, etc etc i was thinking of using a sealed box, but the 8" on a sealed box would just produce hard beats.. i was thinking of 38hz on a 1.0 cubic feet? any suggestion? im kind new to SQ system, and im having a hard time deciding on how should i tune the box or go with a sealed.. i would want the output to produce hard beats when needed at the same time could produce long bass when needed.. :puzzled:

Since I have a Ford Taurus my trunck was totally sealed and no bass would come through and had to port my seat and my deck lid and am trying to locate some speaker cloth that will let the bass to travel through without affecting airflow. Do they make this. I did try the metal mesh grill like I saw in an Overhualing tv show but found it affected bass intensity and sound quality. I am a musician and know my bassists amp has a plastic type mesh (grill) that suppesedly doesn't affect sound quality. Just wondering if anyone out there uses anything specific?