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SPL & SQ / Fabrication

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

  1. Started by fast85_gt,

    im doing a wall in my hatch back i will be doing bass race bass boxing and meca driveby but how will the best way to place the port drivers side? top?bottom? any help please oh and ill be using my 2 18"treo ssx subs

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    • 5 replies
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  2. http://www.termpro.com/asp/members2.asp?Wh...p;MemberID=9231

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  3. Started by cloud77,

    In process of getting my 15" zcon reconed to a 12" but I need to build the enclosure. Car is an "04 Grand prix trunk is painted with GT MAT which I've come to realize works real well. Sub back port back is what I'm trying to accomplish for now. I'll experiment later, but have come to realize that sub back port back sounds really well wamming off the trunk in the American cars I've owned. Running a group 34 up front with 2 XS power 975s in the rear. Stock alt will be replaced with a mech 270 in the near future. So I need to build this box to a 3k setup. Sub will be ran on a mmats m3000.1 with 2 runs of welding wire with knu kollossus filling the gaps big 3 exc. I …

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    • 2 replies
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  4. I moving up from an old 200 rms orion 12" sub to 2-fi ssd's with 1600 watts to them ( or what ever my Soundstream will really put down. lol ) Now looking at the follow 2 box designs from here, ( which is super sweet that you guys posted these! ) Box 1. 12" xcon ported Box 2. 12" icon ported Outside of what appears to be an extra dolly of vertical bracing and total port area are the pretty much the same. Of course the overall dimensions are a bit different, but they have the same internal volume and tuning frequency. So which box is better? More port area make a difference when tuning is the same? Any in-site is much appreciated. Got the email today that the subs shippe…

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    • 6 replies
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  5. Started by Hostility,

    ok, so i have the dimensions for everything, but i want to make sure if its all good, also if someone could do a sketch of it? 2 - 15" nightshades 1 saz-3500D 99 s10 ext cab subs forward, port in the middle firing up but along the back wall of the box. box height - 27 depth - 14.5 Length - 46.5 Port height - 6 width - 16 length - 26.25 net air space 6.68ft3. port area 96.00 in2. @32.19

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    • 7 replies
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  6. Started by burton907,

    i have a 12" FI Q w/ BP option in a 2001 jeep grand cherokee. powered by a SAE 1000D @ 1ohm. right now it's in a 1.5cuft (external before displacements) enclosure that i had the (horribly stupid) local audio shop make for me. i was short on time. i'll let you know dimensions of the room i have to work with. but there is basically as much room as you could ever need for a single 12. or i want it ported tuned to anywhere close to 32hz. so yea, have fun, keep in mind this is my first box. and i don't want it to be over (i believe) 16 inches. i just want it to stay below my rear window level. thank you so much i know it's not really hard. it's just a temp box to get some prac…

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    • 4 replies
    • 784 views
  7. Started by Reggdogg,

    i'm planning on running 2 orion hcca 12's and the box i'm planning on housing them in aimed at 30hz. it's dimensions are 39" wide, 14.5" in height, and 32" in depth. my port measures 13" wide, 8" in height, and 27 3/4" in depth. will these measurements yeild my 30hz goal. i'm not that good with measuring volume and everything so a little assistance will be greatly appreciated.

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    • 4 replies
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  8. Started by MalibuOn22s,

    What are the pros and cons of the 2? I have a box design for my 8 12's with a slot port but i have heard aeros are solid as well? some1 shed some light on this ^^^ original design

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    • 2 replies
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  9. Started by zdoc,

    I have an 18" zcon on order so I'm starting the build here in the next couple days. I have two designs worked up and just curios what every one thinks would be better, more so concerning port area. I plan on using either a 10" or 12" round port. Box will be sub up port back in an 06 xterra. First design: 6.93 cubic ft. after all displacements with A 10" port tuned @ 37 hz port area = 11.38 per cube Second design: 7.4 cubic ft. after all displacements with a 12" port tuned @ 37 hz port area = 15.28 per cube Just curious what everyones thoughts are, thanks

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    • 2 replies
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  10. Started by hpdrlr,

    Hey guys I have all of my equipment just wantin to see if anyone here has experience with ext cab trucks. I have 2 Kicker CVX 15's goin in a Dodge Ram ext cab and I'm going to port them just can't decide where I need to face the subs and port. Can anyone help?

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    • 3 replies
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  11. Started by coreycgarner,

    I am trying to help a friend build a wall in his '05 denali.. He has four 18" FI BLs and he's wanting to keep his second row seats, third row is gone. This system will be used for USACI SB4 and daily use to please the crowd.. Any help with a design or anything will be appreciated!

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    • 1 reply
    • 782 views
  12. Started by mdexxxiv,

    What is the minimum number of yellowtops needed to run a Sundown 3000d? I've still got the stock alternator in the Frontier and want to see what I can do. BTW the Opti 50C is up for sale.

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    • 6 replies
    • 782 views
  13. Started by antonmiller,

    ok so one night i was sitting around thinking up some new box ideas. i really want to have my sub facing forward into the cab of my car, and have the port be on top of the subwoofer. so i was doing some concepting and came up with this, Pdf of box idea. I just want to know if it will work before i start building i forgot to put notes so.... notes: 1. double baffle front plate 2. round port edges 3. 2.8 ^3 feet of airspace after all displacement 4. 3/4" mdf or particle board used. its going to be firing forward with the trunk sealed from the cabin. thanks, Anton Miller

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    • 4 replies
    • 781 views
  14. Started by JammerJ,

    I am starting a new kerfed enclosure for two Pioneer ts-w3002d4 subs. I am a little unsure of how to calculate the volume of the kerfed or flared port. I have two designs so far but I am unsure of which will be the best. I am gonna do two separate boxes and attach them together. Which is better?

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    • 5 replies
    • 780 views
  15. Started by mason_herold,

    im looking at my max dimensions and it looks like its going to be around 8 cubes and its most likely going to be tuned to 33hertz and i was wondering if thats too big? its a shared chamber subs and port up(going in a pickup)

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    • 4 replies
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  16. Started by zooyorkajd,

    a. Subwoofers in question, number of subwoofers & subwoofer size: Dual SA-10's b. Amplifier being used, specifically the model number: 1200 watt Hifonics Brutus (will probably end up upgrading it to a 2000) c. Fabrication skill level: will be made by a box builder d. Preferred material to be used (i.e. MDF, fibreglass, etc): mdf e. Vehicle which the subwoofers will be used in: 93 toyota celica f. Musical preferences: rap g. System goals: SPL all the way h. 37 Hz range

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    • 4 replies
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  17. Started by syzkomike,

    Not so good with building these kind of boxes never seem to e the dims right. any ideas or designs that have actually worked. so lets here some ideas or formulas"

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    • 1 reply
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  18. Started by teambrownnote,

    Today's massive frames and motors add challenges to designing enclosures these days. What is the general "rule of thumb" for the minimum acceptable distance from the back of the woofer's motor/pole piece vent hole and the back wall of the enclosure, or a port wall? I'm playing around with different designs for an older Rockford Fosgate T210D4. I can handle the designs myself, I just need some input in this area. Thanks in advance!

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    • 2 replies
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  19. Started by shizzzon,

    I have a lot better success in making 1 single run with the port if i side fire rather then fire back. I prefer not to have to bend the port(s) is why i am asking if there is anything "off" sounding to this. My max square dimensions in cargo area is - (for this height) 42" wide x 12" high x 24.25" deep. If i were leave a 7" gap in the width to allow air to escape out of the box and shoot up towards the car, i would then have- 35" wide x 12" high x 24.25" deep. At the very back of the box on the side, i would, for example, have a 10.5" high x 4" wide port. I'm assuming i should have it as far back in the car as possible when side firing. If i choose to side fire, should i …

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    • 1 reply
    • 778 views
  20. Started by frankyp00,

    The dimensions are" 20" Wide x 18" Tall x 15" Deep = 3.125 ft^3 external Internal = 2.385 ft^3 - .15 (speaker) = 2.235 ft ^3 to work with minus whatever port area??? a little area in the back lost to the plexi window that will be put in, but negligible The speaker is a Fi BL 12, with flatwind and pchamfer options. Tuning is suggested to be 32 hz and box size between 1.8-2.5 ft^3 I can't go much bigger due to trunk opening, and for that reason I am building to boxes of the same size and putting them in the trunk that way. I mainly listen to Rap/ Hip Hop and Hanna Montana ( ) These will be facing towards the seat so that the plexi rear is visible when opening the trunk. I …

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    • 2 replies
    • 777 views
  21. Started by rak_24540,

    I have a 99 Siverado 3 door. What I want to do is take back seat out and build a box for subs so they will be behind driver seat stacked on top of each other. Take back seat and get cut so I will still have a half seat back there. No one in my area wants to deal with it. Is this a good idea? I just want my trunk to be able to carry 3 people instead of just 2. Would a ported box still be okay on one side of truck?

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    • 8 replies
    • 777 views
  22. Started by mrbojang,

    Just got metered on an Audio control...Did it with music. One song (The one I figured was the loudest) hit 145.0db! The song was Plies - All Black slowed by wattz305 All the other songs we tried were in the 140-143.5 range. I went in figuring I'd be happy hitting those numbers. Around 40hz seems to be the sweet spot. Still wish I had access to a termlab though.

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    • 3 replies
    • 777 views
  23. Started by juicemanfla,

    I need a box for.4 12 sa ported to be put in a 99 crownvic can anybody.help me this and a set price would be nice i live in fla

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    • 4 replies
    • 776 views
  24. Started by fast85_gt,

    right now i have 2 18" in a hatchback with subs up port back will i do better numbers with subs and port up and i have 100sqin of port will i bennifit going to 150sqin of port any help please

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    • 4 replies
    • 776 views
  25. Started by just1moreamp,

    this is what i got the box is 41''w--18''tall---26''deep--this is all outside --the port is 3.5''tall---27''wide---18''deep----i think i have like--7.75cf net--port tuned to--33hz--can someone tell me if this is right----the subs are the--FI BL 15''---i will have a---ia 20.1--on ea sub let me no what you think and if i need to do something about the box

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    • 4 replies
    • 776 views

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