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homiewes

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  3. FI BTL n2 18 box help please

    in Subwoofers / Enclosures

    Posted

    The general 12-16sq per is after displacements. Using Torres will tell you your net airspace and the amount of port area. And port area is simply HxW, say your looking for 27sqin of port, you would want 9Hx3W. You do not take length into account.

    ok, i kind of figured that, because otherwise it wouldnt make any sense. :drinks:

  4. FI BTL n2 18 box help please

    in Subwoofers / Enclosures

    Posted

    One more question though.. The port should be 12-16 sq inches per cubic feet.. Is this before port and all the displacements? but say the box is 7 cubes.. that means anywhere from 84-112 sq inches of port. Well lets say 112. is this 112 just the height and width of the port? Do you not add in the length of the port?

  6. FI BTL n2 18 box help please

    in Subwoofers / Enclosures

    Posted

    Reason i shoot things down is because i want to know the correct way to do things and i always thought there was a different way to.do it..there is a lot of false info on these forums sometimes. But ill take your guys word for it. And just because i dont have experiance in tuning a box doesnt mean i cant spend 10 grand on my system?

    stickied posts are generally not false information LOL

  7. FI BTL n2 18 box help please

    in Subwoofers / Enclosures

    Posted

    Reason i shoot things down is because i want to know the correct way to do things and i always thought there was a different way to.do it..there is a lot of false info on these forums sometimes. But ill take your guys word for it. And just because i dont have experiance in tuning a box doesnt mean i cant spend 10 grand on my system?

  10. FI BTL n2 18 box help please

    in Subwoofers / Enclosures

    Posted

    also what you just said..

    generic rule of thumb is having between 13-17 sq inch of port per cube...

    i dont understand this.. because if the box is 5 cubic feet, that means you should use lets say we go with 16 sq inch per cubic foot. that would be 80 square inches of port.. well 80 square inches isnt very big at all???

    why would you put a 18 in 5 cubes before displacement?

    it was just an example.. i think with our max dimensions it will be aboout 7-7.5 cubes..

  12. FI BTL n2 18 box help please

    in Subwoofers / Enclosures

    Posted

    also what you just said..

    generic rule of thumb is having between 13-17 sq inch of port per cube...

    i dont understand this.. because if the box is 5 cubic feet, that means you should use lets say we go with 16 sq inch per cubic foot. that would be 80 square inches of port.. well 80 square inches isnt very big at all???

  17. FI BTL n2 18 box help please

    in Subwoofers / Enclosures

    Posted

    My friend should be getting his BTL N2 18 in the mail pretty soon, and i want to build the box for him, the thing is I'm a NOOB at box tuning.. I want to learn how to do it, but i havent had anyone to help me or show me the steps.. i know its basic algebra and equations to tune the ports and playing around with parameters, but i dont know the exact way to do it. ANYWAYS could someone help me out or design a box for me. I want someone that KNOWS what they are doing..

    Its for a 2002 chevy blazer.. hes powering the sub with an AQ 3500.1 and the max dimensions are 36" wide, 20" tall, and 23" deep. He wants it to be at 32hz daily driving.. i did a quick sketchup on how he wants it.

    Thanks guys.

  19. just sold the subs

    in Subwoofers / Enclosures

    Posted

    yea of course done in 1/0 sorry i should of put that and all wiring will be done in that i kinda planed on 2 amps but now that i really sit and think about it ur right dual 4's would be better less strain on my alt ... i plan i replacing that too at some point but school has to take top priority for money right now once im makine 80$ an hr flying ill buy what ever it is i want for subs lol but yea i plan on getting a good amp that i can transfer form system to system for sure

    $80 an hour flying? what will you be flying?

  20. just sold the subs

    in Subwoofers / Enclosures

    Posted

    what up guys so im kinda new to this im doing it on my own (no friends are into it like me) this last winter i bought a 04 Malibu maxx hatch back specificaly for subs because i read up on it and heard that hatchbacks are the way to go for loud bass so i then got a pair of poss phantom 12's and gave them there own 1500 watt boss phantom amp (more like 300 watts) but anyways i just wanted some cheap stuff so i could learn and play and not really worry about it but any who just officaly sold them today in a 4th order sounded decent but i want MOREE so im thinking ill move up a notch and run 2 obsidian audio 15d2 wired down to 1 ohm apiece at like 800 to 1000 watts rms in a custom box about 4ft^3 per sub at about 35 hz what u guys think would that be a good next step? by the way big 3 done and extra batt going to be incorporated i have done alot of homework

    well its good that your doing your homework. Sounds like a decent little setup. dont cheap out on a amp. get something that will do rated RMS and you will be happy.

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