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SPL & SQ / Fabrication

Calculations, Concepts, Designs, Theories. All General SPL Or SQ Questions Can Be Discussed Here.

  1. Started by EPerez,

    So I decided to go with 2 12" Zcons D2s and I just wanted to see how well I did my box. I'm trying to learn how to design boxes better and wanted you guys to check it out. I want to have it in a ported box with port and subs front firing sealed off from the trunk of my 2012 Fusion. It will also have internal bracing with 45s. I have 2 Crescendo Bc2k and will have a H/O alt with a xs d3100 in the back. I want to have the port in the middle but I'm stuck with either doing a slot or aero port. The slot doesnt allow me to get as much room as the aero does obviously and also the aero allows me to tune lower. I would like to tune around 32 hz. Does that sound good for the zcon?…

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    • 26 replies
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  2. I want to have a smaller sub for when I travel or haul things. I currently have a 4 cu ft box with an re sx15 firing up and port back. It doesn't leave me much storage room in the back. Since I can't stack anything on top of the box, or by the port. So I'm thinking about a downfiring rear firing box for one Skar vvx12. It would be on the drivers side. Aprox 14" wide, 13" tall, and 27" long, with 4-5" feet on the bottom. The port would be about 4" off my hatch. I'm thinking about a slot port 2" high and 12.5" wide. Net volume 1.7 tuned to 32 hz. This is for daily listening at reasonable volumes. I'm looking for a 5-600 watt amp to run it off of. How much room should I ha…

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    • 7 replies
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  3. Started by Lord Baccus,

    i did a 149.0db Sunday with 1 sub ported to 36Hz going to build an SPL box for it now and get over the 150.0db mark with a singel sub Jacob i am out of Flyers need more as everyone is wanting info SounsStream 15"XxX

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    • 19 replies
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  4. Started by Omega_Ace,

    I currently have a 12" Xcon d2 with a bc2000 wired in parellel in a 2 cu. ft. net box tuned to 32 hz. with 38.5" of port area and love the sound. It is in a 98 mustang with stock alt, stock replacement battery(under hood), 0 gauge all the way including big 3, and marine deep cycle in trunk. My 2 concerns are running amp at .5 ohm until i can get a second bc2000( not sure how long it will be until i get it) linked at a 2 ohm load. Before i link the two i will upgrade the alt. The second concern is space as i only have 31W x 12.5H x 29D max. I really want to keep ported but if it isn't optimal then it might have to be sealed. So I guess I have 2 questions. Can anyone help m…

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    • 19 replies
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  5. Started by JRC,

    i have a 96 s10 reg cab and in order to have a bigger system im forced to build a blow-thru. ive decided that my best option is to do a 4th order bandpass with the port coming through the back of my cab. i like the idea of having a single octo-port (just because i think they look effin b-a). ive done read just about everything you can find on the net and also talked to a few guys who have them....but everyone says something different....my question is how do you tune these things??? "golden ratio/theory"??? i plan on using 4 Lanzar Max Pro 15's (yes i know what your thinking) but they dont need a ton of space and power

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    • 11 replies
    • 2.7k views
  6. I knew this was how it was going down, so I went with it. I hoped to get solid replies on the input to my Alpine IVA-W505 HU. I do not want to run RCAs because they tend to be nasty dirty from PC, but I just might have to. Also IDK if I kept the AUX IN RCA connector for the HU. So I tried the 3.5mm LINE OUT on the PC to the 3.5mm in jack on the IVA thats usually used in conjunction with the USB... both go to one end of the iPOD Y-cord, and the other end is the jack to plug into the POD. I get no audio from the HU from the PC in USB, AUX, or AUX + IN. The rig: I dismantled the rig I built for the HT and rebuilt it for the VAN. RS meter and Audyssey mic. VIDEO REW …

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    • 17 replies
    • 2.7k views
  7. Started by dbsupra,

    I've been searching on here and the internet about port area. I've seen anywhere from 12"/sqft to 25"/sqft. Some say a smaller PAF will act more like a sealed enclosure and tighter sounding with higher power handling. A larger PAF will act more free air with a higher output at lower frequency but will sound loose and lower power handling. I thought the box had more effect than port area does. Where I'm at now. I have a single v1 sa8 in .63 net tuned at 37hz with 17"/sqft. I'm running a sax1200 at 2ohm gained down to 600wrms (clamped). I like the sound but seems that the output is a little lower than I expected. I really have my eye on the new v2 sa8 and would like t…

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    • 18 replies
    • 2.7k views
  8. Started by Lord Baccus,

    I have finished the boxx for the 2x 15" WMD^2 subs w/ carbon fiber cones. wanted to have a boxx for MUSIC, not SPL the external dimentions are H- 18" W- 41.5" D- 35.5" Port was rear fireing 2x pieces 16.5" x 23.75" overall H- 16.5" W- 5" Lv- 23.75" I was shooting for 25Hz port Freq: got D@mmm Close went for a drive and it really POUNDS on the lower notes and has SMOOTH Transition between higher notes... the subs are loacted on the rear of the boxx facing Up ^^ neer the back window port fires to the rear door seperating the subs and BRACING the boxx Pics / a lil late but better than never Strapped @ 1ohm / 0.5ohm per amp DAILY

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    • 20 replies
    • 2.7k views
  9. Started by Basshead956,

    alright guys, reason I'm wanting to get one is because here in Laredo TX there are only a hand full of people who have one car shows consist of ear-o-meter which does not do justice trying to see which meter i should purchase I'm looking at Term Lab http://www.termpro.com/store/shopexd.asp?id=25 let me know if you guys have any other options or ideas thanks in advance!

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    • 12 replies
    • 2.7k views
  10. I am thinking about building a T-line for my 3 SSA DCON 12's. Has anybody here tried it or have any experience with T-lines? If anybody wants to give a shot at helping with the design it would be great. Before you comment that "The box will be huge!" , yes I know. Thanks.

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    • 7 replies
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  11. Started by AirFramerMack,

    4 IA 187s and two AQ 1200's or 8 Hifonics hifi12d4 and two AQ 1200s, this will be a old car(chevy celebrity type ) and walled. this will be my daily drive

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    • 28 replies
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  12. Started by jntar,

    Still looking for a new car. One that I can also have a good daily SQ setup, even have room to compete in. I am also thinking on competing in SPL next year. I wish I could make up my damn mind. '99-current Lexus GS300 maybe IS. Still researching the difference '99-current 4-runner '99-current Accord '99-current Camery "99-current Maxima All these fit into my size, power, and gas milage requirements. I have drove all but the lexus. Sometime this wekend Ill drive one. I have a potential buyer on the ATV so I will have a decent down payment. But I wm looking for the best stock stereo placement and the car with the mose room for growth. Ideas and suggestions definatl…

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    • 23 replies
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  13. See attached pdf for design & WinISO charts. This is the first time I've attempted this so I'm sure there's plenty wrong - looking to learn! Powered by a memphis 16-st1000d pushing 600w rms at 2 ohm. Box 2 design.pdf

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    • 11 replies
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  14. Started by Whiteboydiesel,

    I have an 08 silverado crew cab, I just bought 4 sd-2 10" shallow mounts and I need to build a 4 cubic foot ported box. I took my backseat out for now so it doesn't have to be complicated, and I am powering them with a saz2500, and if you know anyone that can build a box so I can put the seat back in that would be great too.

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    • 5 replies
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  15. Vehicle : 2011 f150 Location in the vehicle: back half seat is removed Space available (Length x Width x Height): From front seat to rear wall 40" Door to door 46" floor to roof is44" Subwoofer make and model: sundown SA15 rev3 d2 Subwoofer Size: 15 Number of Subwoofers: 4 Type of Port (Kerfed, Slot, Aero, etc.): ? What type of music do you like?: all Is your goal SPL or Everyday Music?: Spl but in daily driver. 80% spl 20% sq Tuning Freq (Hz): ? Volume ? additional info- Iv tries to find the …

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    • 9 replies
    • 2.7k views
  16. Probably a horse that's been beaten to death, but I've still got a couple questions. First off I guess the equipment in use would be a good place to start. Two Skar VVX V2 12s and a Synergy Audio WFO 15.1 amp wired to 1 ohm in the trunk of a cavalier. Listen to decaf, rock, and country so musicality is a factor. Only have one VVX in the car right now, so building a new box and deciding to forward fire and seal off versus rear fire is kinda where I'm at right now. I've never heard a sealed off box so don't have anything to reference to also. My gut feeling is sound quality would be better, especially on rock, it would meter well if sealed off properly, but would lose some …

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    • 12 replies
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  17. what is the best wood glue to use for building boxes i plan on using the gorilla wood glue

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    • 18 replies
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  18. Started by Shogen,

    So I've come to a realization that I need to learn to do some woodwork and tool handling(no homo). I would like to eliminate the use of odd speaker adapters for my front door speakers, especially since I'll be redoing the front stage soon. Would a 6amp jigsaw with a blade for metal be able to get the job done of cutting the sheet metal of the door skin? If so, I'd like to cut a 10x7 shape or 10x10 square out of it. I would then create a wood frame/baffle to mount speakers to? Maybe directly to the frame or creating a speaker ring that would mount to the new frame? Ideas? Would that jigsaw be enough???

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    • 29 replies
    • 2.7k views
    • 1 follower
  19. Started by Teamdirty30hz,

    Ok well I have a few questions when it comes to the proper way to decide on the amount of port are that you should use when it comes to designing ported boxes and 4th order enclosures . I have been hearing mixed " opinions " when it comes to picking the amount of port area needed . The most common way I have heard about is staying in between 12 - 16 sq inches of port per cube. Which in my opinion is not a very accurate way to design an enclosure . The other way that have been told is that you adjust your port area according to the xmax or linear max on your woofer. Which sounds to be a more accurate way in to better suit a build. So if anyone knows the actual proper way t…

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    • 16 replies
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  20. i just got paid, and have 70 dollars to spend, so which is a good palm sander, and where to find it thanks

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    • 15 replies
    • 2.6k views
  21. Started by flakko,

    i still dont understand how they work and what the diff is... you got these kind with a bunch of little wires and a crapload of windings and youve got these: with a little bit of windings and thicker wire. is one better than the other? i dont understand.

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    • 18 replies
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  22. Started by cheese20323,

    What is the most accurate sub box calculator tuning and everything

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    • 6 replies
    • 2.6k views
  23. Started by sittdogg,

    Hi guys, out of the 18 years and over 10 systems I have only had a ported box once. Well I have decided to give it a try and am going to build my own ported enclosure. I can say there are a few things iI need to know. I am building an enclosure for a 15" sub for the trunk of a 2001 pontiac grand prix gtp, so height can't be over 16". I want the enclosure to work for my current sub but be able to put the subwoofer im going to buy later in it. I plan to buy either a DD 2515, DC level 3 or 4, or SSA xcon. For now i have an Alpine mrd-m1005 amp. I am going to get a bigger amp later as well because i like to over power subs a bit so i can get loud for local drags and so I coa…

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    • 15 replies
    • 2.6k views
  24. Started by juan,

    Ok so I have an 02 extended cab gmc and Im wanting to put some subs in. Im looking for it to be loud and clear. Im willing to lift the seat up 2 inches. Im not sure if you guys have worked with my type of vehicle before. So far im looking at the icons mainly for the sq but I want loud aswell so maybe the AQ HDC products. Maybe suggest subs and box makers or sites to go for box. Im wanting to do 2 subs under the seat but not sure if I have the room. Any and all help would be appreciated.

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    • 22 replies
    • 2.6k views
  25. Pardon the dust, under construction Hey guys! Have you ever seen panels in installs like this and wondered how in the world did they get those shapes? Well with a series of router tips and tricks, you can start with literally any shape drawn on paper (shown on left), and transform it into a perfectly fabricated wooden template that you can then copy several times into future installs. (Shown on right). Take your installs to the next level with these shaped panels that you can use for hiding amps and crossovers, trimming around speakers, making amazing port shapes, the possibilities are endless! Let's get down to the nitty gritty: What you Need: Safety First! Make sure…

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    • 7 replies
    • 2.6k views

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