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SPL & SQ / Fabrication

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

  1. Started by Aaron Clinton,

    I am just wondering a little about amplifers and competition...... this makes me think because the wattage output of amplifers on the normal consumer market, is growing exponentially fast, for example a few years ago the Earthquake D2 was one of only a few amplifers that could be had for a not so bad price and was doing well over 2000 watts.... I am curious more about this in the purpose of street classes where 12volts and only one battery is allowed now Orion, Kicker, Hifonics, MMATS, PowerBass, American Bass, SPL Dynamics, Harrison Labs, Tru Technologies, Phoenix Gold, Zapco, Cadence, Rockford Fosgate, US Amps (the list goes way on) all make or sell a amplifer model tha…

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    • 1 follower
  2. Started by xiihustleix,

    What i want is the box to be smooth, without being able to see the screws so i can paint the box and have it look very smooth. I have to ways im thinking of going about this. 1- This is the one i feel as the better of the two....sink the screws a little further into the mdf and put a filler then sand it smooth or 2- After the box glue has dried take the screw out then use a filler and sand? Is there any reason for the screws to stay in the wood or can i take them back out? Thanks, Jack3d

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    • 21 replies
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  3. Started by mikeb890,

    Aight, so I'm looking to buy a box for my 15" fi bl, since I cant find anyone to build it for me locally, cant get the dimensions, and cant figure it out myself lmao. Was wondering if any of you guys have heard of Shipsound.com? Their boxes are the size im looking for (the 4.3cf in particular), but their prices seem to good to be true, most of them are under $100. Just dont know what they are tuned to either. Heres the link, - ShipSound.com If they are indeed legit, I'm definitely buying through here.

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    • 10 replies
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  4. Started by cheese20323,

    What is the most accurate sub box calculator tuning and everything

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    • 6 replies
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  5. Started by mikebingham34,

    Alright, well, for a build I am going to be doing I can choose between 2 4" aeroports, or 1 6" aeroport. When I put the 6" into WinISD it tells me a length of 23.25" is needed for my tune. And when I enter 2 4" ports it tells me I need a port length of 21.5". Now, is that a combined length between the two ports? Or does each one need to be 21.5" ?? Thanks for your help.

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    • 3 replies
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  6. Started by blackga,

    im trying to fit two lethal injection 15's in a 06 monte carlo. so according to looking to specs they say that i need about 3 cubes min. i was wondering i could fit a box that big in a 37 w , 36 l , 16 1/4 h. i am also open to using aero ports if thats what i have to do to fit the enclosure. thanks for everyones help in advanced

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    • 4 replies
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  7. Started by tuckintaco93,

    looking for some ideas for my 18's

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    • 33 replies
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  8. Started by sadistic,

    first off i am not mister know it all so please bare with i do know a lot but will see . but any ways what is it with resonant tuning frequency? would it be better to tune low as possible for like a t line and get a higher score? unless your talking frequency length. the lower in the octave you got the hard the bass hits right ??? with in reason of course like the sub dropping off and just can't play well at 18 hz were it plays better at 47 Hz etc etc ... because the music energy is reaching the mic at it full potential of 47Hz if you tune to high the spl drops off again so you lose power in the spl right??? so why would you look for a resonant frequency like 18 hert…

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  9. Started by Thorshammer,

    Well I was bored so I made a couple vidz. Hope you enjoy :bigclap: Up first is a vid showing air movement from drivers window Breaking the lil guys in. Strange noise is not the subs. The closer the mic gets to the port the worse it gets. Lastly my no flex flex vid LMAO!! Will post more if ya want!

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    • 16 replies
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  10. Started by Kyleebbert,

    Stupidly I bought an 18 Fi BL and didn't realize I couldn't fit the recommended box inside my trunk...its anywhere between 4-4.5 cubic ft..Is there anyway I can build a new box similar in size that will increase the current SPL levels and help not suffocate the sub-woofer so much?

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    • 9 replies
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  11. Started by matt cusack,

    Which is better for box building liquid nail or wood glue? Any others you would suggest?? Thanks, Matt Cusack

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    • 27 replies
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  12. Started by $Hunter,

    Alright guys i'm in the market for a system ( my first ) I have a 98 Z-71 EXT Cab so i have more room than needed. I'm wanting 2 fi btl 15s & 2 saz3000d's or 2 1500ds.....the problem i'm having is idk how to build a box lol Nor do i know what kind of wiring to get, if anybody can help me please help

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    • 3 replies
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  13. Started by JimJ,

    http://forum.soundillusions.net/showthread.php?t=54724 I know I posted this over on CA.com, but just in case you didn't see it... This isn't MECA-sponsored, but should be good to get out (away from the forums, hehe ) and see some people/installs. I had better see some of the B'burg crew out there

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    • 29 replies
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  14. Started by Aaron Clinton,

    I understand the physics of it, but Casey showed me the Pioneer Death Match winning truck that did deep into the 170's, can someone explain more? I want to understand about them, also when is it benificial to use one and when is it not? here is the pic of the wall

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    • 1 reply
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  15. Started by Shogen,

    So, in an effort to be cool I have been looking at getting a proper enclosure for my 12" Icon. Spoke with Andrew and I'm possibly going that route. First I'd like to find someone more local than across the US. I'm in Jersey and need someone close by if possible that can design/build an enclosure to spec for my boom boom. ... Anybody here on the east coast with the skills and tools?? Please let me know... Thanks!

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    • 22 replies
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  16. So my game plan is to do 2 twelves facing front with port facing driver side rear fender area. The box width is going to be just wide enough to accommodate the subs so a little more than 25" but would it be better to have the height about the same as the subs or would it matter, in terms of SPL? If it's around 13.5" (internal height 12") then I wouldn't be able to stack the 4" aeros. If it's 15" then I can stack them but to me, I feel as though the more streamlined shape of the other box would allow for higher SPL. The taller enclosure would be shorter on depth too, obvioulsy. I could also just be thinking about this way too much but whatever

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    • 13 replies
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  17. Started by 97T5WAGONPIMP,

    posted by ohjay is he a hater or did he just get a shitty box Bah, you don't want the POS box that comes with them, you're better off with the prefab boxes. I have one that was built by Kevin and the baffle flops like a fish out of water with 175 watt rms subs.

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    • 12 replies
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    • 2 followers
  18. Started by Thorshammer,

    My goal this yr. is farely ambitious. I want to post the loudest Trunk score in DBDrag. This is not gonna be an easy task by no means. Thier are some seriously big shoes to fill following in the likes of Dave Dasilva, Mike Stiers, Don Doyle, Steve Sears to name a few. I will have to achieve at least 154+ to achieve my goal. My starting point See ya in the Lanes

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    • 21 replies
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  19. Started by Mark LaFountain,

    I had to get a pic on my cell, only camera I had at the time.

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    • 18 replies
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  20. Started by XxRobxX,

    Okay I have two 15" fi ssds in a 95 ford explorer im looking for a ported box design tuned at 33hz Ive look everywhere and I am having trouble figuring out how to design one myself

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  21. I am in the process of upgrading my sub to one 10" Fi Bl are looking to have an enclosure built. Does anyone out there know of a good place to go in the Los Angeles, Orange County area to have a quality box built to mfg specs?

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    • 4 replies
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  22. Started by Lucky 76,

    I wanted to paint my port chrome and layer it in plexi. What would provide me with the greatest reflectivity as far as spray paint goes? I looked into mirror finish film but it seems to be quite pricy. I wanted to spend around 50 dollars max for about 25 sq ft.

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    • 11 replies
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  23. Started by folgrz,

    how much do you think a setup like this would cost i just want a wall going across my trunk (for 2 12" RL-P's) like in the pictures and maybe when i fold down my seats ill put some plexiglass so you can look at the subs but if it costs too much then its out of the question

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    • 3 replies
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  24. Started by Adrian_D,

    Current setup is Mach 5 MLI and Seas H1396 amplified by an Eclipse EA4000 and all the processing is done by my Alpine 9813. I'm very satisfied with the midbass output and the top end, it's just that midrange isn't cutting it After seeing Ryan2's idea with the Fostex FF85k's I thought trying a pair and ditching the tweeters. I don't want to invest in the H701 at this time and try 3-way (would require some sort of controller too and another 2 channel amp, not to mention the extra room ) The problem is placement. I have no room in the dash to mount them. Pics of the "locations" : One idea is to use the kicks. Passenger side is ok, driver's side could work but there's v…

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    • 14 replies
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  25. Started by handman84,

    Looking for a box design for my 12" GCON. Can anyone point me in the right direction? Any help will be greatly appreciated.

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    • 6 replies
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