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  1. Obsidian Audio Specs

    General Car Audio Discussion
    Hello everyone, I bought two obsidian audio 10" v3 subs a couple years back. I never got around to making a proper box for them, but I now have the time and unfortunately can't find any specs for them! I'm hoping someone knows the recommended box specs. I'm considering doing a passive...
  2. Box for 2 SPL show 15's

    Technical & Advanced Car Audio Discussion
    Hey all, I'm new to the forum here but i had noticed a ton of info on this site and need a few questions answered for a build we are doing for our shop. We are in the midst of building up a 1994 jimmy with two Hertz SPL show 15's on a Hertz HP3001 3000w rms amplifier. We need a build for a...
  3. 4th Order Bandpass Enclosure Box Sizes

    Technical & Advanced Car Audio Discussion
    Hi all, newbie to the forum here. I'm working on a couple of small 4th order bandpass enclosures for a couple of 12" subs for my car at the moment (size is quite a constraint) and I'm curious about how the box sizes affect the frequency response. I used a 4th order bandpass enclosure...
  4. ported box design

    General Car Audio Discussion
    Hey everyone new to audio and new to the forum. I have a few questions about a sub box that I am planning on making. I have just purchased my first sub and built a sealed box around 1.15 cu ft. I am very pleased with the sound but am interested in hearing it in a ported box. Here is where i have...
  5. Enclosure Design help

    System Design: Help Me Choose Equipment For My Car
    I have a Alpine SWR-10D2 (1000 watts rms) i'm mounting to an alpine MRX-M110 and am looking to build a box for it. I'm going for SQ so I figured a sealed box would be best, am i right? I was told by a buddy who owns an audio shop that this sub is best in a ported box, however upon plugging all...
  6. Nee help for my MOFO-154X

    General Car Audio Discussion
    Hey this is my first post here. I'm kind of new to audio and I need help for plans for a ported subwoofer box. I've look at money posts, but I'm still a little confused. The subwoofer I'm getting is a MOFO-154X 15 inch subwoofer. I want to build ported box and I don't know how to... I'll be...
  7. Help for a box design? (First time builder)

    Fabrication, Tools & Tricks of the trade
    I recently purchased a Treo SSX 15" woofer that came with a crappy box so I want to make a new one but I have no idea how to calculate any of the port area things and the calculators do not work with the space in my trunk. The manufacturer recommends 3.5 cb/ft @ 29.4 hz with a 50sq/in vent...
  8. 2000 Ranger Single Cab 2x15 Polk

    Build Logs & Project Install Gallery
    My rebuild of 2000 ranger single cab updating to 2 Polk mm1540dvc in an isobaric setup.
  9. Does this sub box plan look about right?

    Technical & Advanced Car Audio Discussion
    This is my first diy ported box build project for my alpine swr12d4 subwoofer. I built sealed box for the same subwoofer last year, and it sounds fine or I am not even sure how good it sounds to be honest. Anyway, now I am planning to build a ported box, with all the technical things...
  10. Need Help Tuning First Sub Enclosuere

    General Car Audio Discussion
    HI Im building a subwoofer box and need help determining port length. The Box is 2.188 Ft^3 and will have 2 round 3 inch PVC port. The ports will stick out of the box 5 1/4 inches I want to tune it tune 32Hz (is this good for rap and EDM?) My question is A port calculator website gave me a...
  11. X18 transmission line for a 2005 Honda Element

    Build Logs & Project Install Gallery
    I am in the middle of building a tline for my honda element using a Sundown x18. http://youtu.be/mvaft0dUGMI
  12. AVI Sls 300 Box Help!

    System Design: Help Me Choose Equipment For My Car
    Hello, I have 3 avi sls300 subs at my disposal and a Digital Designs M1A to power them. I'm considering a ported box for 2 of them at 5 cubic feet with heavy polyfill (making it closer to 6 cubic feet) tuned to 25hz but I've heard their reputation for sounding incredible and low in a 1.1 cubic...
  13. The Real Port Formula

    Technical & Advanced Car Audio Discussion
    I am troubled by all the different port formula equations surfacing today all spitting out different answers so I came here to ask you. Why are they all different. Does the qtc change with them or whats going on! Before I spend hundreds building boxes, I want to make sure I'm doing it right...
  14. BOX FABRICATORS HELP PLEASE!!

    General Car Audio Discussion
    Hello I am in the process of trying to build a box for (4) diamond audio d110d4.2 subs I have. I believe I need a 4.0 cu ft box which I believe the dimensions are *(W x H x D): 33" x 16-1/2" x 21" The only thing I do not know are the dimensions of the slotted port and how far away from the...
  15. SQ Setup 4.450$ budget

    System Design: Help Me Choose Equipment For My Car
    Car: Audi A3 1.8t 8L 1999 Budget: 3.450USD Whatever is listed at the time of viewing is my current set-up which (hopefully) will change based on the comments people make. Appreciated :) Amplifier: Gladen AS 200.4]GLADEN DSP 4to6 Monoblock: Will I need it? Looking for SQ. Subwoofer: 2x 10"...
  16. Recommend a box for Arc Audio Arc 12 (not v3)

    System Design: Help Me Choose Equipment For My Car
    I'm looking for sealed so the bass is tight and punchy but want it to do low low bass as well. Setup will be purely for SQ. Thanks for any input.
  17. Building a Fiberglass corner box for a 2011 Nissan Versa, Ported or Sealed?

    Fabrication, Tools & Tricks of the trade
    Hey guys, I am going to build a couple of fiberglass enclosures for the Tiida´s trunk´s corners (here at Mexico the Versas are called Tiidas), I am gonna use a couple of MTX MZS1004 (10") Subwoofers (one at each corner). MTX´s manual specifies that a sealed enclosure is better for this subs, but...
  18. My first build

    System Design: Help Me Choose Equipment For My Car
    Mounting Depth (IN.,CM) 6 1/4, 15.9 Mounting Cutout (IN.,CM) 11, 27.8 Min Rec Sealed Box Volume (CU. FT., Liters) 1, 28.3 Max Rec Sealed Box Volume (CU. FT., Liters) 4.6, 130 Min Rec Vented Box Volume (CU. Ft., Liters)** 1.75, 49.6 Max Rec Vented Box Volume (CU. Ft., Liters)** 2.25, 63.7...
  19. 12W3v2 ported enclosure question

    General Car Audio Discussion
    I am trying to wrap my head around enclosure tuning but for some reason it is just not making sense to me. So I am hoping someone can simplify it for me. The JL manual recommends a ported box that is 1.75 net volume tuned at 30.3. I spoke with tech support to see if they had the port...
  20. Help- 2 sealed 10w7 boxes. Phase issues?

    Technical & Advanced Car Audio Discussion
    i am thinking about setting up 2 sealed boxes loaded with jl 10w7 subwoofers. running off an arc audio 1200.1 . I would like to have the boxes butt to butt with one sub facing forward and one facing backwards in my ford full size van. any suggestions? will this cause any phase issues? i have one...
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