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SPL & SQ / Fabrication

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

  1. Started by viper167,

    does any one know of a box building program that works with apple computers ? all that i have found are for windows

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  2. Started by RaTtLz,

    Since my local box builder seems to think he needs $270 to build my sub box I decided to tackle it myself. I have been reading up on box building when I came across a forum that suggested making a box panel that sandwiched a layer of cork inbetween 2 layers of mdf. Another suggestion was to use sand inbetween 2 layers. As the latter isn't feasible, I am interested in the cork option since it is fairly cheep. I understand that the cork is supposed to help dampen the box. Has anyone utilized this practice? Or are they blowing smoke? They also suggested using dynamat instead of cork, but that seems a bit pricey.

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    • 15 replies
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  3. Im tryin to see if anyone can custom fiberglass me some door panels, entire door panels for both of my doors of my car. I know some companies locally that do it but they charge extremely, i mean EXTREMELY large amounts of money for it. To give you an example, they charge $1,500 to do a 14cuft wall in my car.... i dont know why they told me that a while back but that's not what i wanted from them anyway because i know how expensive they are. I'm lookin to spend no more than $300 per door. Is that too low? I can't find anything for a Scion tC.

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    • 12 replies
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  4. Started by SKEEMASK,

    Just bought 2 of the old version BTL 12s loaded with the 3rd mag and everything. But Im trying to save space for more room for my batteries and amps. My amps are going to consist of a T40001BD and a T5002. Im going to do a semi blowthrough in the trunk of my Thunderbird in which the back seats do not fold down but Im going to cut out the rear armrest and use it to help let bass escape into the cabin. I wanted my enclosure to be subs and ports forward sealed off from the trunk. I'll have about 8" between the back of the seat and the front of the enclosure. My deminsions will be (double baffled) 15"H x 38.25"W x 23"D. After sub displacement,bracing, and 45 degree corners (r…

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    • 11 replies
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  5. Started by waltham415,

    So... me and my dad are in the process of rebuilding a 1970 vw bug, and of course... i plan on putting a system into it. the main problem will be with the placement of the subwoofers, bugs are tiny vehicals with almost no extra space. we would prefer to keep a backseat but would be willing to give it up if need be. So does anyone have any ideas for a good subwoofer and somewhere to put it. money shouldnt be too much of an issue but it must be within reason... Im going for SQ but would still like it to get hella loud. i was thinking maybe 2 10in Fi SSds in a sealed box... any ideas or suggestions would be appreciated. My next question isnt really fabrication but while im…

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    • 7 replies
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  6. Started by liljestrand,

    http://www.craftsman.com/shc/s/p_10155_12602_00964473000P I found one of these at a local pawn shop and was wondering if it would be worth picking up for 50 bucks. The one at the shop has a attachment that looks something like a router and has a circle cutting attachment among other things. Really would just need it for cutting circles, and then possibly other household things. Sorry if this is in the wrong section didnt really know where to ask about tools here.

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    • 13 replies
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  7. Started by durban,

    I recently purchased an A.P. Axis 15 and was suggested to make this box. Box is to be 3.0 cu. ft. net and to use 4 - 4" pvc ports. Because of box dimensions I'm not able to use flare ports so this is gonna be straight 4" pvc. I'm told the beauty of this type of box it the ability to change tuning and also seal up the box using plumbing inside pipe plugs. A ported and sealed box combination. My concerns is port noise. When I brought this up I was told that I would not have that much and that I would certianly not hear it while playing normal music, just on bass tracks. Is this accurate information? I think this box concept is great but if it's so great why isn't …

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    • 9 replies
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  8. Started by mikee72,

    hey all just built my first 6th order and it came out beautifully. this was for an fi x 12 and pounds for what it is and what power im throwing to it. and illl be sure to have picks of it upp tomoro. also did my blowthrough and that was a succes as well. just wanted to say thanks for the help

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    • 15 replies
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  9. Started by pimpdaddy1787,

    Well, i think its time for a custom box. The current box was made for 2 12" w7's. my speakers are 10cvx122 kickers. specs are min port, 1.75+port and max 2.25+port with the port being 63" sq x 20" long. figure that out. 87.32 spl, 3.74 Revc, .0507 Sd M, 18.62 BL TM, 57.98 Vas liters, 28.44 Fs Hz, 197.28 Mms Grams, 10.209 Qms, .38 Qes, .3665 Qts, 15.4mm XMax. whatever all that means, lol. The max dimensions in the truck are ______14____ and about 4' wide maxx. / l / l 1-1.5' …

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    • 12 replies
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  10. Started by Lord Baccus,

    i did a 149.3db this weekend got 1st place my 4-15" box was still wet ! the FG Resin had not dryed and i had no time to brace the boxx i beat a guy that had 16 > 12" subs he had this he got a 148.9db & 2nd place

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    • 12 replies
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  11. Started by JPx7,

    Hi.. this is my first build so i have little experience right now. Im getting 1 ICON 12 with either an AQ1200 or an AP1500 amp. I drive a 2000 jetta, the trunk is about 40 inches wide. I am not really sure what type of enclosure i need, the specifications for it, or where to get one so any help would be nice.

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    • 15 replies
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  12. Started by 94CamryBumpin,

    i currently built my first box ever...and it came out pretty good...there are some minor gaps...which i believe are due to warped boards because all cuts were made by me on a table saw...but back to the point...i siliconed the crap out of the inside and silicone into the port (around the port pieces and one of the other corners) will that change anything such as tuning? or increase the liklihood of port noise etc?

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    • 16 replies
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  13. Started by dbdog,

    Hi Guys, Hope you are all well and i aslo hope that some one can assist me with working out the correct spec for a true SPL box. please note I will only be doing SPL with this box. Ok so I have 18mm ply wood, 1 12inch subwoofer, 1 amplifier and 1 battery. Here's what i'd like to do Get a minimum of 151db's from this setup Equipment DD Z1a NSB 170 12v Targa TG301-DW The sub specs are as follows and i could be wrong because this is taken directly from the site. 12" COMP SUBWOOFER - DUAL 1 SPECIFICATIONS Fs (free air resonance): 48.7 Hz SPL (efficiency, 1W/1M): 89 dB Nominal Inpedance: 1/2 Ω Qts (total speaker "Q"): 0.606 Qes (electrical "Q"): 0.732 Qms (mechanical "Q"): 3.5…

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  14. Started by shizzzon,

    in a hatchback, anybody personally experienced a setup where the subs were within 3.5" from the glass producing over 2,000w of power? Is there any danger or am i worrying too much?

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    • 11 replies
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  15. Started by TooLoud4You,

    Hi I'm making my box for 2 12" Fi SSDs and I can get my dimensions from the RE box calculator but how could I calculate a double baffle into it? I have been thinkin about it and I can not think of how I can calculate it and keep it at 4 cubes.

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    • 9 replies
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  16. Started by shadowm891,

    Is there someone out there who can help me with a custom enclosure design with a single 10 inch jl audio 10w6v3. The enclosure i am looking for would need to be 1 cubic foot with aero ports tune at 35hz. As far as space i have to work with i draw a simple image of what the space i have to work with.

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    • 2 replies
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  17. Started by 1mtx1,

    im headin out to the store tomrrow to get some stuff well im there i wana pic up some new screws that will keep my sub down nice and thight. i did not go with a dubble baffle and with my new 15inch ssd on its way, i wana make sure that my sub does not lift out. here is the thing my last sub a audioq 2.5 was jumping around pretty hard in the same box the ssd is goin in. Can any one lead me to the right screws so i will not have a issue? I will be bolting the box down better to make sure the box it self is not goin no where as well. thanks guys Joe

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    • 15 replies
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  18. Started by Bigmike,

    i have 1K on two Fi BL 12 rear firing in the trunk. would putting a hole in the rear deck improve SPL?that in the cabin will it cause problem for my 6x9 on the rear deck??? what the best way to do it?? Thanks Inadvance!!!!!

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    • 13 replies
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  19. Started by nickeveready,

    Im a noob at woodworking and have a couple of questions for those that are experienced with routers. I currently have a porter cable fixed based router i snatched up from a pawn shop for $20. I wanna get a plunge router as well in the near future. Collet size is not an issue because both routers are 1/2 and 1/4 shank interchangeable. What kind/size/length bit do i need to do hole cutouts and also what size bit for roundover's for port edges? Assuming 3/4 mdf is being used. Thanks

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    • 5 replies
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  20. What is considered the windowline in a competition vehicle? My doors and my trunk windows have a different height. Also, do they have no wall classes with a height limit vs the window rule?

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    • 3 replies
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  21. Started by jakemw,

    This is a box I am building for a friend. For an 8" Kicker L5, There is very minimal space in his Jeep TJ, so the height is pretty much no give for the size of the sub, even though it is an 8". This is the first box I have ever built before, so I know it may seem a bit rough in some parts, but I am working on it to make it look good for my buddy. If you guys have any comments about it to make it better, please let me know! after all i am only a beginner! Thanks! 0408001333.jpg picture by jaketrials - Photobucket 0409001306.jpg picture by jaketrials - Photobucket 0409001306a.jpg picture by jaketrials - Photobucket 0409001306b.jpg picture by jaketrials - Photobucket

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    • 14 replies
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  22. Started by waxnvx31,

    I have a weird question; I plan on attempting to build some Kick panels. I have some Fiberglass and Kevlar material that might work. But I want your opinion. All this material is about .015 -.035 thick per layer, yeah it would take a lot of layers. This is a Spun-lace polyester material, Its 4

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    • 8 replies
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  23. Started by Deto1992,

    What are the benefits of using aeroports rather than a standard port? Are there any negatives? Just trying to learn a bit more before I waste my time building a new box. Thanks for the help guys

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    • 9 replies
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  24. Started by burgundy86,

    i have two fi bl 15`s n i wanna build a box for them tuned to 32hz but i have no idea wat size the box needs to be ? the build is for my xterra

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    • 4 replies
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  25. Started by imhungnurnot,

    I'm just curious what are the advantages and disadvantages between TL enclosures, 4th order bandpass, and 6th order bandpass enclosures. These are all very new to me!

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    • 10 replies
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