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SPL & SQ / Fabrication

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

  1. Started by mathewdylang,

    I was checking out the parameters for the icon and the aa havoc. They're pretty close spec wise. So would using the the pre made box plans work for the havoc? From my calculations its 30-32hz tuning.

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    • 6 replies
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  2. so im trying to figure out how to design my own boxes and learn how to use these calculators need advice on how this looks like if its right or wrong please. im looking to build a enclousre with subs up port back going into my hatchback integra. subs i will be using are 3 skar vvx 8s. ive had a couple other threads with this same thing but since i have limited space to use and want to try a aero port now. want it to be tuned either 32 hz or 33hz not sure i want to hit the lows i mostly listen to rap/hip hop and some rock but mostly rap/hip hop. please take a look and give me advice on what you guys think thanks.

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    • 48 replies
    • 3.9k views
  3. What are the differences between the alignments QB3 Quasi-butterworth, BB4/SBB4 (Super-)boom box, C4/SC4 (Sub-)Chebyshev, EBS3 extended bass shelf -3 dB, and EBS6 extended bass shelf -6dB when using WinISD?

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    • 9 replies
    • 13.4k views
  4. Started by bosscochise,

    I need help. I traded my 2 vvx-15 for a sundown v2 18 inch in a box that needs help. I want I box thats tuned between 30-34 htz. I want it vented not ported, I like the look better. I like how loud it gets but I would like to control it a little better when I turn it up, but I think its the box that leaks. I have a jeep grand cherokee, so I know I have the space for a large box. At the moment the the sub faces up I would like it if it fired to the back. Any help is greatly appreciated. And I am still running the planet audio bb2400.1

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    • 0 replies
    • 531 views
  5. Started by starvingf150,

    I have a Dodge Journey that I want to put 2 SX 12s in. (By the way, only have one right now, need another. Put the word out, D2) I want to have the 'right' box for it. Not one that a experienced builder can demo and know quickly that it's a crap build. I have been reading the available threads on what makes a vented box a 'good' vented box. But to honest, it seems pretty complicated. I am not a fluid dynamics student. But I am trying to learn. It is hard to narrow down my music style. It's 50/50 between hard rock like Metallica and such, and also rap/hip-hop. I know that doesn't make it easy. It will be running on a solid 2300wrms. I have the whole back available for the …

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    • 2 replies
    • 671 views
  6. Started by jellyfish420,

    when building kick panels for 6.5 comps would it be better to leave it sealed or to cut a hole and vent them into the inner fender. what is the sound diff in the both. thank you.

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    • 11 replies
    • 1.3k views
  7. Started by puscifer2,

    This is my first go at trying to design a ported box so just want to make sure I got the numbers right. This is for a coworker. The sub is a DD 9515. According to their site it should be 3 cu with 48"^2 of port. Here's what I came up with: 24" x 22" x 15" and the port 3 9/16" x 13 1/2". If I follow the "rules" and make it 20" long it'll be 38ish tune. I appreciate any input you can give. 15" height is to keep it under the window line and cannot be modified. Other than that any suggestions welcome!

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    • 4 replies
    • 1.2k views
  8. Started by kryptonitewhite,

    VanEQWizard Background noise floor fluctuates from 65dB to 78dB... pretty bad when nothing is playing! I can read these pics off PC but not from the threads so: 5.22% 300Hz sounded so much louder than 200Hz yet it was so much quieter... that is why KW likes a U shaped FR curve, more and more exaggerated as you get further from the middle 1.97% 1.97% 1.42% .844% .937% .253 .235 .235 .402 .217 .576 .229 .270 .259 .376 .208 .672 idk what happened .0343 IDKY but dist stopped showing here. I was clicking it though. couldnt even hear 18,000 so i stopped after it

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    • 1 reply
    • 851 views
  9. Started by ///M5,

    Posted this in the hop since there was some vinyl talk this morn, but need some help in figuring out how to finish the vinyl off after it is stretched and glued to the front. There is no place to "staple" the vinyl to the back of the pods so how would you attach it? I have never done this before, but have some really stretchy vinyl and 3M 77 Spray adhesive (and others, but thought this was best). Any recommendations on how to finish or attach the vinyl to the backside of the tweeter pods? As a reference for size the whole is less than 2" and the edges of the pod are about a 1/4". These will be mounted in the stock sail panel locations.

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    • 24 replies
    • 2.4k views
  10. Started by paulmocan,

    Hi everyone, My name is Paul Mocan, and i am from Cluj-Napoca, Romania. Adrian_D is a good friend of mine, and one day we decided to transform my 20 year old Volvo 340, in a SPL car... here is what happend. We started with adding a second battery behind the passanger seet, and complettly removed the rear seats. We made a box design with 2 ports, one for SPL and one for music. My car was a wreck. I had oil and watter dripping out of it, but it was a crowd gatherer. I'll come back with some pictures...

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    • 3 replies
    • 809 views
    • 1 follower
  11. Started by ss454,

    Help me out. I can't afford a ton of batteries so I can only go into a class with minimal bat requirement. :boxin:

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    • 9 replies
    • 1.4k views
    • 1 follower
  12. Started by fast85_gt,

    What is a good tuning point for a wall in a hatchback with 2 18's ?

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    • 21 replies
    • 2.6k views
  13. Started by imsolost7886,

    This will be my first wall build, I've been doing a lot of reading and looking at build logs. I should start by saying the plan is 2-3 (if I can fit 3) RE XXX 15's, on either a DC Audio 12k or Stetsom 14K. I think I'm going to go with Baltic Birch for weight and strength, I am seeing guys using 2 by 4 bracing, also seeing them use it for the back of the wall outside, what is the purpose? is it needed? what other ways would you strengthen the wall or face? the subs weigh 76lbs a piece. I was thinking 3-4 layer front face, double layer everywhere else, fully resin the box. How much bracing would you recommend? If you have pics or anything else you might recommend I'm open …

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    • 4 replies
    • 1.1k views
  14. Started by Julian,

    I need help building a wall in my 95 lumina, i don't want to pay 1 grand for a wall that i could build myself. Does anyone near Kansas city missouri know how to build walls? and willing to help a fellow SSA member?

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    • 9 replies
    • 699 views
  15. Started by bassahaulic,

    I am starting my wall build soon; I think I have a general idea on how to go about it. I

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    • 0 replies
    • 496 views
  16. Started by Lucky 76,

    I have been pondering on what to coat my wall with. I was originally going to go spray paint but motha f that. I want a plasticy rubberized coating on the box. My friend suggested herculiner. Have any of you had any experience using this stuff? Is there something better that I can use that will work good?

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    • 10 replies
    • 1.1k views
  17. Started by Julian,

    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)

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    • 6 replies
    • 843 views
  18. Vehicle: 93 Passat Subwoofers: 4 12" DD1500 Series Amplifiers: Unknown, 2000 watts max clamped class Now my initial thought form what ive seeen is a 10 cube box tuned to around 34 for daily and w/e the vehical likes for spl subs clustered up by passenger head rest, port drivers side. other than that im not sure what else to ry when building a wall... So if you have a wall or know of some good pointers please let me know! NOw for a few quesitons: 45° corner pieces or reverse rounds? 2x4"s around the box for supports or just double layer everything? does the location of the baffle matter that much? as in how far away it is from the b-pillar? and how would you find the best…

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    • 6 replies
    • 561 views
  19. Started by sefugi,

    We will be finishing up on my son's car soon and I have been wanting to wall-up my ride for a while now. I have a '93 T-Bird and I really have no need for the back seat. I have thought about a newer vehicle, but the old bird runs and drives great and I work very close to home. I allready have a pair of Saz-2000 amps and 150' of 1/0 welding cable. I am deciding as I write this about the SA-15 Presale. My thoughts about the wall are as follows: From a rough measurement I have 31-31.5" height 42" width 22-23" depth These measurements should give around 14.75cu' gross I would like a slot port centered with a measurement of about 29.5" high and a width of 6" thats 177" at alm…

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    • 26 replies
    • 3.4k views
  20. Started by rowdyful7,

    I was wondering if anyone could help on a the best way to approach walling my truck off I have 2 18" zcons facing forward and the port forward and I want to wall it off I was thinking getting cardboard and getting the outline of the rest of the space that I need sealed off and putting it on some mdf and cutting it out but I can't think of how I would attach that piece to my box without wood gluing it so if anyone could help ibwould appreciate it

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    • 2 replies
    • 1.1k views
  21. Started by rmzsuzuki89,

    I'm starting a new build for my two DP 21"s in my Expedition, and I'm looking for some ideas. My ideas are in the above poll. Right now I have a subs up, port back setup. Current box is 20 cubes with 300 sq. inches of port at 32Hz. I'm looking at about the same volume and tuning for my wall as well. Possibly tuned a little lower, I loves my lows. The wall will be to the b-pillars. I'm basically looking to get as loud as possible on music, but this is for daily, so it's not going to be a burp monster. All votes, comments, and suggestions are appreciated.

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    • 31 replies
    • 3.3k views
  22. Started by Dangrebel,

    Im thinking of wallin my truck (2000 gmc Sierra ext cab) and dropping another death penalty in there. But I have some questions. What is the best side for the body or dead center? Also would the area around it have to be completely sealed or can there be gaps along the sides behind a beauty panel? Do I double the port area? And will this affect sound quality?

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    • 9 replies
    • 800 views
  23. Started by cookiemonster,

    Crazy, stupid, or cool? Thinking about doing wall with 2 18's. Not for spl, just daily pounding.

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    • 10 replies
    • 1.5k views
  24. Upon further inspection, my fifteens were abused by the previous owner, and only have one functioning coil each, so i'll be replacing then much sooner than expected. I am still not completely decided on a course of action, but I thought I would ask some questions about walls before I wrote it off as too difficult. First one, I know the weight will lower mileage significantly, which isn't cool, but I live within four miles of all my main destinations, so it's not too bad. Will the weight of a wall enclosure require attention to the suspension? to be honest, i'm not entirely sure what kinds of questions to ask, so any advice from those of you experienced with such enclosur…

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    • 37 replies
    • 3.1k views
  25. 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
    • 1k views
    • 1 follower

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