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SPL & SQ / Fabrication

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

  1. Started by guardian,

    Hi there wonder what's yr opinion about such setup: 2 x 8" by AudioPulse (Epic D2) questions: 1. go sealed or ported? 2. how big should be the box to achieve lower frequency response (~32hz)? 3. will this setup be enough efficient to shake my car or it's better to go with 2x10" ? thx

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    • 1 reply
    • 451 views
  2. Started by ppiflat10s,

    I have plenty of room for my overall volume, but fitting 3 10's and a port on the face is my challenge. I am going to have a box of around 3.25-3.75 ft^3 tuned to around 35. I was going for around 60 in^2 port area, my inside dimension is going to be 30.5 so that leaves me with a port that is 2" tall by 30.5" wide. Ive already done the math and have the depth on the box to easily fit the port length, but is there any reasons against a port of this shape? I thought about using about 4-5 4 inch round ports, which is either 48 or 60 in^2, but with either route I need to have ports longer than will fit inside the box, and I will not run an exterior port because this is my dai…

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    • 7 replies
    • 794 views
  3. Started by bigrank916,

    I am ready to finish my box this weekend for my BTL but have a few questions first. When I attach the baffle with the second piece, will the port tuning be changed at all? The top will not be flush after I add the second piece. Ive been looking in the build logs and wherever I can to see if this is what everybody else does. No luck so far. I know its only one side of the port but I want to get it right and not waste wood. Hopefully you guys understand what I am trying to say. I bought like a 2x2 stick for the bracing as it was cheaper than the closet poles. Can I shave off the corners so there isnt such a big edge or should I just go get closet poles? This wont be my fin…

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    • 7 replies
    • 640 views
    • 1 follower
  4. Started by porkchop,

    should i download winisd or winisd pro?

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    • 34 replies
    • 3.1k views
  5. Started by Megavanman,

    hey whats up guys i have seen on the internet and on a few forums people using bedliner as a sound deadener does it work and has anyone had any good or bad experiences from it

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    • 1 reply
    • 665 views
  6. Started by spencers,

    I need some advice on whether to go with 2 btl 15s or 2 btl 18s. I have about 16 cubic ft of space to put a box in my car. I will post pics of the car asap. I am just looking a system that hits hard hopefully around 148 to 150 dbs.

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    • 3 replies
    • 841 views
  7. Started by antonmiller,

    I know you have to put slits in the wood, but how do you know how deep and so on, is there some type of formula? I know i read it on here some where, but i just cant find it.... Thanks,

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    • 16 replies
    • 1.5k views
  8. Started by john denver,

    Hey guys wondering if anybody local to Richmond IN has some spare pieces of mdf laying around im just needing a piece 37.25X12.75 and dont want to buy a whole sheet let me know if you can help me out

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    • 0 replies
    • 451 views
  9. Started by JBano13,

    If I hsve aeroports half internal half external does the volume of the external portion of the port count towards the internal volume of my box? Also would the surface area of the portion of the port within the box divided by 1728 by the ports displacement? Thanks in advance!

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    • 7 replies
    • 916 views
  10. Started by sandsnip3r,

    Anyone know of which programs professional fabricators use...?

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    • 4 replies
    • 755 views
  11. Started by forsellb,

    Ok whats the difference in one box tuned to 35hz with 2.5cuft and another box tuned to 35hz with 3cuft? also whats the best material to build a box out of?

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    • 6 replies
    • 619 views
  12. Started by Hell-Razor,

    Well I sat down tonight thinking I have most things ordered, I may want to double check my trunk space. I re measured and I was off a few inches on the height. My trunk space is 40W by 42depth by 18 high. This will give me about 14.07 cubic feet of total area. Now if I were to build a box and have it exactly 6 cubic feet with an external port to save room this would leave me with 8 cubic feet remaining. I have a feeling I may not have enough air flow to keep a 18 BTL in the trunk ($^%@). I do (i think) have enough room to store one but I would be starving it for air. I measured one of the seats and its about 2.5 feet by about 4 feet in height. I could lower the back to al…

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    • 45 replies
    • 3.6k views
  13. Started by forsellb,

    Ok question 1 : Im planning on building my own box but when they say have 12-16 sq in of port space what does that mean? Which part of the port do you measure to get that figure. 2 : would a T-line be a better choice for 2 BTL 12s with a 2.5cuft box? or a regular L-port?

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    • 8 replies
    • 712 views
  14. Started by spbfitz,

    ANYONE know who can or knows ppl who can please i am desperate

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    • 2 replies
    • 599 views
  15. Started by Maggotpuffin,

    Is 180 a good price for a custom box from audio excelence. It was made for someone else but he said hed sell it to me for 180 its a big ported box thats tuned to 45hz thanks for your opinion

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    • 5 replies
    • 1.6k views
  16. Started by sandsnip3r,

    Well, i saw something that made me think of this, so i made it, it is a box design, with 2 ports, that go out of the... front (same side as woorfer) and then come to a port directly above the woofer... its weird. lol any comments? lol

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    • 13 replies
    • 1.1k views
  17. Started by bolo88,

    I have a Soundstream Reference 500sx rated at 500 watts in 1ohm & 2ohm, is there a difference in sound quality in the different load and what about subs, does it make a difference in sound quality if you have a dual 1ohm or a dual 4ohm sub wired at 2ohm load are there any differences in sound quality.

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    • 3 replies
    • 644 views
  18. Started by BOOMN89,

    I am in the process of building my car and I am wanting to do something different. I started out with 3 solox 12's but traded them for 2 solox 18's. I have 4 crunch Gp3000d's to use but I only have 18 cubes total to use. So i thought of using only one solox 18 with 2 GP's in a 4th or 6th order bandpass enclosure. This is for daily and maybe a once in a while bass race/street beat run. Would it be better to run 2 18's ported or one in a bandpass? If a bandpass how big sealed and ported.

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    • 3 replies
    • 915 views
    • 1 follower
  19. Started by spbfitz,

    can anyone please help me design a box max dim 44x22x22 going to be in the trunk of a 1997 towncar

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    • 5 replies
    • 695 views
  20. Started by billystorms24,

    Hey guys I have a question I bought 4 3 inch aeros to be tuned to 31 hz they are going to be 12.3 inches each will this sound good I'm using a saz 3000d witha cascade designs omega 18 itshould pound right thank to all who help

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    • 8 replies
    • 1.2k views
  21. Started by TEARfromRED,

    looking to make a sealed enclosure for a 10" Infinity Kappa Perfect DVQ. the sub will be getting 400rms, just trying to get some confirmation on the dimensions of the box i should make based on my reading I should be looking for a box with about .8 cubic feet and using the mid-size insert. this look correct to everyone?

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    • 1 reply
    • 518 views
  22. Started by spbfitz,

    can anyone do box designs? it would be for 2 15" dc level 4xl's

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    • 0 replies
    • 481 views
  23. Started by rmzsuzuki89,

    I have 4 DP21"s and 2 SAZ-3000d's that I'm stuffing in my 03 Expedition. I'm looking for ways to get enough port area with the subs...The box will be at the B-pillars sealed from the back. It will be about 40 cubes tuned to between 30 and 32 hz. So I'm wandering if I could port through the diamond itself without any problems. Or would this be bad?...Any other ways to get sufficient port area would be appreciated also.

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    • 22 replies
    • 1.6k views
  24. Started by Maggotpuffin,

    I have 1 06 Kicker L715 in a ported box in a 2004 Isuzu Rodeo. Im gonna build a new box first the measurments are Build the enclosure to internally measure 5.0 cubic feet. Use a port opening that measures 50 square inches (3" X 16") and a port length that measures 15" deep into the enclosure. Im looking for a little sq but mostly spl. Its goona be tuned to 33hz. Is that good for what im looking for. My amp is a KX1200.1 and its wired down to 1 ohm. Thanks for any input

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    • 10 replies
    • 1k views
  25. Started by billystorms24,

    heres my box measurements 5.339 cubic feet i want to use areo ports to tune this box to 30 Hz I want to use maybe 2 - 4 inch areos or what ever you guys think would be the best to use please include the measurement of the flares too please break down the measurements to the areos ill get them for parts express. thanks guys, Bill. ps I need to know asap cause i have the box built its ready to go.

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    • 4 replies
    • 822 views

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