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SPL & SQ / Fabrication

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

  1. Started by bassfreak,

    I need help with a box spec for my 2 Sundown Audio SA-15s. Its going into a Izusu Rodeo. My goal is to hit over 150db. The box needs to be 6 to 8 cubic feet, port tuned to 35hz and max width is 41". I looking for a box that i can use as a daily driver and for competitions. I would appreciate the help.

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  2. Started by tech2332,

    Is there a major sound difference for a 12" from 2.30 Cu. Ft. to 2.50 Cu. Ft.??

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  3. Started by Canaan,

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  4. Started by hondakilla98,

    I have an re sx15d4 in a box that is 2.9 cu ft gross w/2 3" wide 10" long aero ports. I will be running an saz1500d @2 ohms into this sub. I want the best sq I can get from this sub. So I'm looking for box recommendations. Right now I'm looking at building a 4.2 cu ft box tuned to 34 hertz with a slot port facing the back of my jeep and the sub firing up. I used the box calculator to design the box.

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  5. Started by bassmachine,

    I cant decide if i want my port to be in the middle of my 2 18's or @ the bottom below my 18's people reply back asap thanks=]

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  6. Started by skress,

    Im looking to get a good SQ setup. Ive narrowed my options to the SSA Icon 12 or a Fi Q 12. Whichever one I get will be powered by a Cadence TXA-1000D amp. I cant decide on which one, hopefully somebody here will be able to help me decide. I listen to hard rock/metal almost exclusively and I drive a 97 2 dr Exploder. So, which has the best SQ with the most output? Thanks, Mo Also, if I get the BP option on the Fi Q and still just run that same amp would it make a difference?

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  7. Started by oxsign,

    I think this is the right place to put this. Ok, I want loud, but not "boomy" bass. Is that possible??? I will be pushing my 2 RL-p 15's with an A2400DB Power Acoustik amp (1800w rms @1ohm). Would my best bet be to go with a sealed box?? Or should I go with a ported one?? I listen to hiphop, rock, and everything in between. I would like to have a good LSQ system. Any info you can give me would be great. Thx, Victor. B) P.S. this system is going into a s10 xcab. So the subs will be inside with me not in a trunk.

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  8. http://www.nascishows.com/forum/viewtopic.php?t=189 this is a db drag 2x event!! click on the link to see teh flyer and information too we will be having this event in Austin Texas!!! there will be a Tweak n Tune Saturday Sept.15, 2007 at: Sub Sonic Audio and Security 6611 North Lamar Austin, Tx 78752 512-323-9699 if you have any ?'s or information, please call 956.739.5159 or [email protected]

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  9. Started by truckaudioman,

    I was thinking about to the standard square ports, but last night I thought about doing one, maybe two, larger round ports using PVC. Has anyone tried this. I was thinking something like 8" diameter ports, maybe two of them. Since it is going in a blowthrough, is it also okay to extend the ports out a little, maybe almost into the blowthrough to ensure more pressure from the port goes directly into the cabin of the truck.

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  10. Started by tuckedciv,

    how small of a port tube can i get away with for a 1 cuft box? going to put a ssa dcon in it.

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  11. Started by manbeer,

    seen it a couple of times during my visits to select products site. anyone try this stuff? i am trying to get a better idea of the result i would get with it. my car has this felty suede material in the center console and ashtray area. is it similar to that? i was thinking of using it to line the bottom of the amp rack and wanted to know if it is decent or i should just do real suede?

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  12. Wood Thickness 0.75 Height 30 Width 38.5 Depth 15 Sub Displacement 0.42 Port Height 28.5 Port Width 3 Tuning Frequency 32 Port Length 29 3/16 I get Around 6 Cubes at around 32 hz, after sub and port displacement...i just want to be sure they are correct. thanks.

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  13. So I'm good at building enclosures.....calculating ported enclosures? Not so much. I've just bought a new tow vehicle and using some budget equipment to put a nice setup in it. These are new items I've had laying around to put into a project car I'm building that won't be finished for a while. Vehicle : 2004 Escalade ESV (Suburban sized one) Location in the vehicle: Rear hatch, against the 3rd row. Want to keep some cargo room Space available (Length x Width x Height): 46" wide is set. 16" deep is set. The height is my variable. 20" is maximum. All dimensions are internal. Subwoofer make and model: Subwoofers are JBL GTO 4 ohm models Subwoofer Size: 12" …

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  14. Started by thebiggmann12,

    ok so i built a box for my new nightshade 18. it is just under 5 cubic feet before sub displacement but after port displacement. it is tuned to 31 hz b4 the sub. it sounds great. my question is if the port area is too small. the re calculator that i used said that the square port area was 55.5. idk if this means inches or what but im guessing inches. the sub performs great at higher frequencies but the lows are kinda lacking compared to the 18" fi q that i had before. any info would be great. also if somebody would be willing to design me an optimal box that would be great too. my dimensions are 36" wide 22" tall and 20" deep. sub and port would have to be facing up. i li…

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    • 5 replies
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  15. Started by gadgeteer123,

    How much mdf would i need to build a sealed 3 cubic foot enclosure for my 15" xcon

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    • 6 replies
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  16. Started by Jacob86,

    I'm going to be building a box for my friends Ram. Aero ports seem to be the only way to port this box but I've never used them before so im looking for a little help. Box will be going under the rear seat. The sub is a JL 10v3v3 Box will be about 1.33ft after sub displacement Tricky thing is I only have about 3 inches of height for the areo.(Rectangle box with wells on the bottom) The Rectangle part of the box will be W54.5-D13.5-H3 JL Recommends 32Hz 84.7 Slot Port Area

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  17. Started by phresh,

    Could anyone draw up a quick sketch for me? Car - Crown Victoria Subs - Obsidian 15s Amp - AP18001D Specs: W = 41" D ~ 21" H < 24" @30hz Daily box but going for SPL Subs up Hopefully someone can help me out

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  18. Started by just1moreamp,

    how much port do i need for a 9.0cf box is 120'' of port to much port---like 16.5'' tall 6.5'' wide 16''deep i just dont wont to much port any help would be nice

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  19. Started by cjosisek90,

    Anyone know if there are any major/non major SPL competitions in NJ area. I would like to go up and watch and maybe participate in the future. But mostly just watch in awe. Curt

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  20. Started by tosh,

    can someone tell me what a t-line enclosure is and whats the advantage

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  21. Started by severancej,

    I got a cut sheet from skar audio, and i want to know others opinions on it. Ive tried to draw it up on paper to visualize, and ive done some calculations to help someone who knows how to use the info. Its for a friend so i don't wanna waste his cash on a shit design. Ok so he has a 97 Jeep grand cherokee. 90a alternator, I did the big 3 for him in some 4 gauge stinger pro i had laying around, and he had already bought a Rockford amp kit 4 gauge also...pretty nice wire. Ok the max dims are 36" wide, 36"deep and 30"tall, this leaves plenty space for the port to breath either up our back..The subwoofer is a skar audio ivx15 V1. Its a d2 coil. Here's spec off woofersetc.co…

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  22. Started by spbfitz,

    can anyone please help me design a box max dim 44x22x22 going to be in the trunk of a 1997 towncar

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  23. Started by djjdnap,

    it didnt hit me how big it was until i started cutting the pieces, seriusly, its like a mini dog house... I gotta go buy another sheet of mdf, dam thats 44bux...22$ each I have my friends lil d-snap camera, but he didnt giv me the usb connector to get the pics off of the camera hopefully i'll get it 2ma.. and hopefully i'll be finished wt the box by then also. now i still gotta order the subs

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  24. Started by SKEEMASK,

    I have a 97' Thunderbird that Im doing now. I wanted either a pair of Fi BTL12s or Fi BL15s. I want the BL15s because I would save a lil money on power and can be used in other areas such as the build, elec system, etc..... But the enclosure size needed is kinda on the large size for my trunk. But I can fit them in there if I angle the baffle and use 2-6" aero ports. My real question is I was reading on another forum that a guy with a mustang (which is basically the same trunk as mine) had success with his subs facing forward and his aeros on the side. He said that subs back/port side was the loudest on the meter but subs forward/port side was the loudest to ear. Has anyb…

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  25. Started by anarchyaudio,

    I have been to the 2 local (small ) car stereo shops in the area and neither have RTA. Anyone have any suggest to get a reading of my system. Would love to be able to get it tuned up

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