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SPL & SQ / Fabrication

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

  1. Started by Pimpdaddyq,

    Hey guys, I have 2 Older model Audiobahn Immortals (not the flamed out crap, and I got a good deal so dont rip on me please). I hit 140.8 legal on the TL with one in the trunk in a small box firing up in my civic, and want to put both in my backseat and make a temporary wall for a comp coming in a couple weeks, doesn't have to be perfect, but any pointers? People around here don't know there chit so I want to show people what a loud car is compared to some of the retards around here. Ill try and get some pics up but wondered if anyone could help at all. Thanks guys. Andrew

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    • 4 replies
    • 895 views
  2. Started by Chapter2,

    MUUHAHAHAHAHAH

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    • 16 replies
    • 2.8k views
  3. Started by teamsolo,

    HEY JUST WONDERING WAT KIND OF NUMBERS I WILL BE LOOKING AT WITH 4 15' DB DRIVE IN A WALL POWERED BY A MASSIVE AMP IN A 95 INTEGRA

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    • 5 replies
    • 918 views
  4. Started by redlineaudio,

    I know it's a long ways from anywhere, but if you happen to be close by.....come bump w/ us!

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    • 4 replies
    • 927 views
  5. Started by t-rex audio,

    all 1st time db drag/bass race just $5 per class T-Rex Audio 1324 Stratford Ave Stratford CT 06615 203-378-8377

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    • 0 replies
    • 656 views
  6. Started by talibmohamid,

    Do I fire my sub towards my trunk lid or into my vehicle? I have asked several people and now I'm going to ask the proz.....which way would yeild the better sound? I head that on paper it should be the same? Could you guys tell me why i should do either or? PLEASE - THANKS

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    • 5 replies
    • 1.1k views
  7. Started by teamsolo,

    hey im about to put 4 15 in a acura integra and need help building a wall

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    • 12 replies
    • 1.5k views
  8. Started by bdawson72,

    So, Ive been sitting here thinking about about what I should do. I'm wondering if Aeroports could be a viable solution.

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    • 36 replies
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  9. Started by tejcurrent,

    So I'm taking my setup to a 1x event in timmonsville sc. I'll finally be getting metered on a t/l, but I'm wondering what I should bring with me, and if anyone has any tips. There are 2 classes they said I could compete in, truck/suv or something else like extreme personal or something like that. I don't know what would be better, or if it makes much of a difference because like I said, it's my first competition. I've already been told not to do anything to drain the batteries before getting metered, don't know how sound that is or not... Just wondering if there's anything I should know before driving 70+ miles away tomarrow moring. ;D Thanks.

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    • 6 replies
    • 862 views
  10. Started by Koridan,

    Alright, I know how all you guys are happy to help people with set-ups and stuff. So I got one for ya. MY brother was paralyzed sometime around birth. So he is confined to a wheel-chair. He rides around in a big-honkin van. He loves car audio and has always been interested in what other people have. Anyway his birthday is coming up soon and I was wondering if you guys could just put your heads together and help me figure out how and where to put a system in his van. I will have pictures soon. Later Today. It's a '91 Chevy Van with the back seat cut out so he can drive his wheel-chair into it. Anyway I have to go put a water pump in. Thanks in advance for all your help and…

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    • 3 replies
    • 586 views
  11. Started by audio-neon,

    SO I am finally looking to replace my factory starting battery and I am looking at a couple different options. THe Powermaster 2400 or 2700 Kinetik HC2000 Tsunami/Yellowtop (not really looking at this option just put it here) NSB 90 Stinger 1000 (their newer line) Just looking for suggestions. My budget for battery would like to be less than 200 if used or 250 or less new.

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    • 5 replies
    • 868 views
  12. Started by mcbuggin,

    well I have seen this on ROE in some of the vids is there anyone who can hook me up with this for a comp comeing up at the end of this week would like to use it for steet beats and does anyone know what freq. it is at. thanks P.S. if this is in the wrong section sorry.

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    • 9 replies
    • 1.1k views
  13. Started by Bumpin300,

    Hello, I have a box designed and it currently has 4.6 cubic feet net internal volume after wall thickness/drivers/bracing. I would like to port this box and the port face is 13.5hx4w. What length would the port need to be to tune the box to 33hz and 35hz? Also what would the lenght need to be if the port face was 13.5hx4.5w? Thanks

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    • 3 replies
    • 755 views
  14. Started by audio-neon,

    I have been trying to decide whether or not to go smaller with my box build. All of my buddies that are a little old school when it comes to spl say big boxes are the way to go... But when talking to people I compete with such as TJ in his Yugo doing 52's he says go smaller. My current box is 3.68 cubic feet after driver displacement, but not port displacement. 69 sq inches of port tuned to 42 hz. The woofers are two TC sounds OEM 10". I am thinking of shrinking down to a triple front baffled, double walled 2.4 cubic feet gross, and using 2 4" aero-ports and slightly raising my tuning as the change in box orientation changed my resonant, and building the wall (in the trun…

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    • 2 replies
    • 897 views
  15. Started by Lord Baccus,

    i measured from the subs to where the mic go's and got 7' give or take an inch. so 7'x4=28' gives me the 1/4 wave devide 1131 the speed of sound by 28'= 40.39Hz so i port to 30.39Hz - with cabin gain should peek @ 40.39Hz but what about the ports fireing 90degrees out of faze, ??? subs are pointed forward into the back of the seat & the ports are fireing up along the back window line. i drive a 1988' Ford F-150 x-cab

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    • 48 replies
    • 3.8k views
    • 1 follower
  16. Started by djjdnap,

    Ok so i'm pretty much done wt my box, will post pics soon enough, but. I'm not going to be able to reach my subs, once done, so if i connect each + and - to a bolt and nut on the box, that should work just fine correct? I'm sure i've seen it done before. I just would rather not run long lengths of wire to the amp.

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    • 11 replies
    • 1.7k views
  17. Started by pimpedout97x,

    alright. ive got the dimensions. i have 2 options of building this. its kind of going to be trial and error until i find the right height i want the desk to be, but here it goes. the box needs to be 4.5 cubes each (2 seperate boxes) and tuning...im guessing like 20ish or 24hz or something? 95% of the time its for rap music. once in a blue moon i may watch a movie on it. but for the most part, i want it to sound best on rap music. the dimensions im working with are 39" x 37" (width and length) using those 2 dimensions, i need to see how high it will be to make 4.5 cubes after determining the tuning and port length, etc. if i like the height, ill build the box using that wi…

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    • 0 replies
    • 518 views
  18. Started by platnum accord,

    ok so between my 2 15's im going to have about 400 square inches of port area, and i need to know if figuring out tuning frequency is the same as like a round or slot port. or if 400 is too much lemme know. i have figured 355 per sub so 2/3rds of that is about 220 per sub. but the box is going to be aboue 3.5-3.8 cubes per sub and i would like it to be tuned to around 35 hz. but i have no idea how long i need to make the port or anything like that. so any tips or tricks are well appreciated.

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    • 12 replies
    • 1.2k views
    • 1 follower
  19. Started by Koridan,

    Im getting two Mach5 MAW-15's and I noticed that the qts was .32 I think. So I guess I will put them in a ported enclosure tuned to 32hz. Does that sound okay? How big should the box be for the two of them? around 6ft^3? Thanks ~MadroX

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    • 4 replies
    • 665 views
  20. looking for some help with the enclosure i am planning to build in the rear seat of my accord. it is not going to be a wall but a ported box reall. i was just wondering how to face the subs and ports. like subs up ports forward and that kinda junk. well i guess i should have stated what im looking for. im looking for a loud daily driver.

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    • 4 replies
    • 765 views
  21. Started by damonhargroves07,

    i have a 1997 mercury mountaineer with 2 fi q18's DRUMMING~! they are powered by a t20001bd rockford. i am losing so much pressure out of the back glass do to flexing. do they make clamps for the back hatch to hold it down? its a daily box in now and will future be a crx style spl box. i currently have a 12 cube crx style box with 120 sq. inch of port. thanks for any and all help! Damon

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    • 9 replies
    • 1k views
  22. Started by splmark,

    im really thinking about running some dc sounds gear 6 12's or 4 15's in a wall. what do you guys think of box/port sizes for a bass race set up? also does anyone have any spl numbers with there subs?

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    • 3 replies
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  23. Started by dopey,

    In the process of designing a box for the 15 Loaded BTL. Can I design an "L" slot port box to have a tuning freq of approx 40hz for comps...and then just put 1.5" thich MDF along one side of the port? Since calc's tell me that will bring me down to 32hz. So the port will be approx 6.5 inches wide for a 40hz tune and 5 inches wide for a 32hz. I'm just wondering because only the last 14inches or so will be 5 inches...the other 14ish inches (inside the box) will still be 6.5 inches. Will this screw with tuning...and will this raise or lower my ACTUAL tuning freq?

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    • 4 replies
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  24. I have a box in my Mustang that's 2.5 ft^3 tuned to 32 Hz that's used fo my 12" Mag D2. If I just swtich out the Mag D2 with a 12" Fi Q, would the tuning still be 32 Hz, or am I missing something?

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    • 7 replies
    • 933 views
    • 1 follower
  25. Started by ArrizX,

    http://www.woofersetc.com/index.cfm?fuseac...Product_ID=3637 or because the specs of the tc-7 are here http://tcsounds.com/tc7.htm http://www.woofersetc.com/index.cfm?fuseac...Product_ID=4450 this would work for the large ported box under low extension so pretty much the first ported at 1cu a chamber the obcon in the picture at 1.4 a chamber or the large ported for 1.7 a chamber which would give me low extention i waned 12's but they would be to big for my hatch. i listen to rap and have a small 2002 civic si hachback. and i want a quality system, but the thing is that because these are 10's i am afraid they wont get loud enough the power will be from this Hifonics BXi …

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    • 8 replies
    • 1.7k views

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