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SPL & SQ / Fabrication

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

  1. Started by 941 Spl,

    Ok so i have decided to build a box with aero port but im a little lost with the tuning the box will be 6.5 cubes with a fi btl 18 in it if i use two 6" aeros how long do they need to be to get too 33 hz ? thanks for the help guys =)

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    • 2 replies
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  2. Started by Chapter2,

    if your going see you there,,,cars still not ready but im taking it out anyway

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    • 6 replies
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  3. Started by mimo73,

    Hi folks. I just picked up a pair of L7 10's to go in my single cab 06 Sierra. I would like to go ported if I can make it play loud and hard enough over a sealed setup to be worth while, however I am not sure as to what my best bet would be in terms of porting for this. The enclosure dimentions will be18"Hx57"Wx7D which is good for 2.91 cubes if my math is right. I've been running 1 12" powerbass L12 in a 2 cubic ft ported enclosure with the sub behind the pasenger seat and one 4" port firing up from the top on the oposite end and it has sounded pretty decent, but I want to run more power and get louder and due to mounting depth issues a more substantial higher power ha…

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    • 8 replies
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  4. Started by inkfx,

    Next weekend I will be starting a new box build and was hoping to get some help from yall on an enclosure design. I could probably do what I did last time, just use RE calc and Google Sketch to design. However, I hear too often that the RE calc is not very accurate and tuning can be very off. I want to build this box to last me a while, so I'd like to do it right the first time. - Subwoofers being used are 2 AudioQue SDC2.5 15" - Power will provided from a SAE-1200Dv2 @ 1ohm - I'm not the best wood worker, but i can get a simple box built. I've done one already. I have a Jigsaw to do the cutting. Not the best, but it works. - I will buy MDF from Lowes. - Build will be for…

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    • 10 replies
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  5. Finally designed my first enclosure. It is for a 12" GCON. ~2.5 ft^3 tuned to ~33hz. Does my math/design look correct? Does this look like a design that will translate into the real world effectively? It will be going in the trunk of a 1996 Honda Accord sedan powered by an AQ1200. This is what I came up with to fit my trunk space needs. Any critiques and opinions are welcome and greatly appreciated.

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    • 4 replies
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  6. Started by gmc123,

    I am trying to find out how many cubic feet i would need for 6 SA-15s in a ported wall It will be ran by 2 2600w soundstream amps and I willl be playing rap and bass tracks.

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    • 7 replies
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  7. Started by motoxchris08,

    I need help with an enclosure I'm building my enclosure is 2.51 cuft after displacement it will hold one fi Bl 12 ran off a T1000 amp I would like to tune it to 32 HRZ with what info I have come up with in order to tune it to 32 HRZ if I go with a 4"port 10.3" long it should be around 32HRz does this sound right my enclosure is 16" deep 54" long 9.5" tall in the front and 7.25" tall in the back it will be up fire and I would like to run the port off the front witch is the side that is 9.5" I'm working with very little room so I can not change the die mentions of the enclosure much if you have any suggestions on how to do this right please let me no add if …

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    • 13 replies
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  8. Started by HawkEye,

    Hey all.Im going to be getting a different enclosure and im wondering how big it needs/should be.I have 4 10" DC lvl 3 subs with lvl 4 upgrades.Ive been doing some thinking and I think i can move my batteries and have room for a bigger enclosure.The max deminsions I could use would be 32W x 19H x 40D.My goal is to hit 150db and I just cant do that with my current enclosure.I know the deminsion I gave are probaly to big for the 4 10's so thats why I was wondering how big I should make it.I would like the entire enclosure to be double baffled and I would like to use aero ports.I have always liked aero ports but I have never had a enclosure with them.I would like the enclosu…

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    • 8 replies
    • 1.1k views
  9. Started by Hell-Razor,

    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)

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    • 10 replies
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  10. Started by sound=vibration,

    Ok I owed a freind of mine some money so he asked for a box and retarded me i said ya lol so here we go. It will be a bit different decieded for free i might as well do something different try something new. 1 cvr 10 1.8cubes tunned to 36hrz with an external port 28sqin.. design will be up in a bit and box will be bedlined

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    • 8 replies
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  11. Started by Hzd Skizzy,

    So Lowes is having a sale in my area and i noticed that 3/4 MDF 4x8 sheets are on sale for 32$ I was wondering, how many 4x8 sheets would i need to make a 4.0cf ported box After displacements. Any help is appreciated. Oh and theyre having a sale on 1/0 for 1.93$ a ft

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    • 8 replies
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  12. Started by shadowm891,

    hi every have another question my step dad bought me another sa-12 as a late xmas gift and he gonna help me build a new box for my 2nd 12 gets here but the space i have is 39x16x22 1/2 which is w x d x h. now my question is is it possible to build a box for these two subs with this much space ? and how high do you think i could tune the sub's at as well if it's not i can add more height to the box.

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    • 11 replies
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  13. Started by BigDaddy13440,

    Just a for instance: Say you have an enclosure 40" wide x 32" long x 30" high, The port is 38.5" wide (facing forward), 6.5" in height, and 24.5" in length - tuned to approximately 34Hz (I'm assuming a driver XMax of 20mm.) The Net enclosure volume is 14.40 cubes, less driver displacement. You have the option of placing (4) 15" subs on the top baffle, or (9) 10" subs. Which do YOU choose, and why? What subs would YOU do? Roughly 1.5 cubes each for the 10's, or 3.37 for the 15's. Either way, it would be possible to run whatever amp at 1 ohm Mono - Strapped SAZ3500's, anyone? I'd be VERY interested to see/hear/speculate what the XCONS would do......

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    • 10 replies
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  14. Started by psycho72,

    I am looking for a good place to go to learn about building crossovers. Not only how but what components to look for, theory on how different setups affect sound, anythng and everythng.

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    • 4 replies
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  15. Started by zyskatr,

    Hey guys..I haven't completely started building anything just yet and this will be my first build and was just wondering about the port type and location of it and the subs. I don't have any exact dimensions or anything just yet just need to get a simple idea first. I have 2 T12's (rockford) in a prefab box now and wanted to make an good box for them. Any idea's on port type, sub and port location would be appreciated. And any first time building tips! I've heard a lot about subs up and port back but not sure if anything else would sound better in a hatchback. Thank for the help in advance, Ted

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    • 9 replies
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  16. We are having a meca sponsered show, and should be a blast , there was about 50 cars here last time, and everyone had a blast. if you have any questions feel free to call us at 269-426-0009 ask for kyle here is the link to the flyer for the show. http://www.mecacaraudio.com/flyers/5-20-07MIv2.pdf

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    • 4 replies
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  17. Started by loud lincoln,

    i want to wall my lincoln but first i need to make sure i wont get a ticket if i do have a wall. any one who knows about that kind of stuff any help would be good.thanks in advance

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    • 5 replies
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  18. Started by djjdnap,

    http://www.1stconnect.com/anozira/SiteTops.../alternator.htm I Tried to copy and post, but it was way too too much...Good reading though

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  19. Started by brian85578,

    Anyone no what size t-nuts to use in double baffle box for 2 sa 12s

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    • 6 replies
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  20. Started by gump2773,

    Hey all. Im looking for a design for 2 12 Sa's in my PT. My max dimensions are 39 W x 15 D x 20 H. i will be running them off of a saz 3500. Im looking for a cross between daily and burp if there is such a thing. Ive been told in the PT to run port up subs up with slot port inbetween the subs. I had someone making a design with cut sheets flake on me and I have to have a design by Monday when i have a shop to build in. I know this is asking a lot but if anyone can help me out it would be appreciated. the design can be basic as i dont have much room to work with. I just need cut sheet list and I should be set. Tuning should be right around 33-35 hz. and box should be righ…

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    • 7 replies
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  21. Started by dopey,

    I want to put 3 batterys in the back end of the car. I have a lot of 1/0 wire. Which is better/correct?

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    • 6 replies
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  22. Started by dsgfierce1,

    my question is im trying to make a box for 2 18" btls dimentions are 49"L x 24"T x 27"D here are some rough sketches from paint how should i go about bracing it i know that i need to(or do i?) since im planing on running them on 2 SAZ-3000D and i will doublebaffle the top where the speakers will be mounted would simply corner bracing like in this pic be enuff and also placing a small block of mdf on 1 or both sides of the port to support the middle of the box

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    • 9 replies
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  23. Started by king alpha,

    I just got a 12" Mag from Low-Hz, and currently have it in my old sealed box that housed a JL 12w6(v1). That box has about 0.8 cubic ft. after driver displacement. Anyway, I was planning on building a ported box and got this off the net: http://www.subwoofertools.com/forum/ported...=&Vas=&Fs=&CE=0 I was all set on building it, but decided to read more, and the more I read, the more I get confused and hesitant. So I decided to ask the official SI site for input. I want the best ported box with a maximum width of 30" and max height of 13". It's going into a 95 Ford Mustang, and I would like the box to fit perfectly into the hole when you fold down the seats. …

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    • 8 replies
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  24. Started by AcIdBuRn83355,

    Its been a while since ive been on here... but i need some help... I'm building an enclosure for my new car (02' focus ZTS) which will house 4 10" woofers firing towards the rear of the car at a slight angle with the deck lid.. (ie 35-45*) question one... is this going to cause a lot of cancelation? question two... i want to build a seperate air chamber to fit the spare tire well... and connect the two chambers to increase my overall air space... will doing that actually do anything for my airspace considering for now... the box is sealed? thanks for any help -AcId-

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    • 4 replies
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  25. Started by rabidmechanic05,

    my friend wants me to build him a box for his 2 12" lanzar vibe dual 4's and i cant find any specs on these subs let alone what cubes/tuning freq. to build for, its going to be ported for SQ-L if anyone can help me out. thanks and aparently if i try to just type SQ-L without the dash, i get LSQ?

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    • 2 replies
    • 1.1k views

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