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alaskanzx5

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Posts posted by alaskanzx5

  4. whats the loudest (spl) 12s to get?

    in General Audio - Can't find a category for your question? Ask here.

    Posted

    well, ive got t2d4 12s and when i was running just 1 off of a t300.2 bridged i did a 141.xx and with the t1500.1bd cp i have now with 1 of the 12s i did 143.9 ( also did a box but it was my first and not the best ) The loudest 2 12S ive seen were 2 t1d412"s running off a t1000.1bd and did somwhere between 145-146 in a sedan. rockford is spendy though, im sure there are other great options with just as good if not better results.

  8. box design?

    in Subwoofers / Enclosures

    Posted

    you could do a box that is 18"h x 28"w x 18" d with the port being 16.5"h x 3"w x 30 l. that gives you 2.81 cu ft before sub displacement and the port would be 17.62 cu in per sq foot before sub discplacement. im not sure on sub discplacement but i would say right around .2 so you would have .11 of air space you could take up for bracing. i would recomend atleast bracing the baffle.

  11. box choice

    in Subwoofers / Enclosures

    Posted

    ok, thats 4 and 0 so single chamber wins. thanks guys, now i just gotta finish the design a little add some space for bracing. i might paint the port silver like my car and do black and blue fabric, any suggestions on painting mdf? for fabric it will be black with what ever side ends up on top being blue with a rf symbol in the middle. gonna get it tested several time in different positions before i put the finishing touches on it. the build will start once it gets warm enough, -10 to 30 degrees is to cold to work outside. so another 2 months or so.

  12. box choice

    in Subwoofers / Enclosures

    Posted · Edited by alaskanzx5

    ok so i have 2 rf t2 12"s that i will be building box(s) for. i have to design in wich i did make a post on the spl section and did get some good advice over there. Some of them said that a single chamber box will be louder, who else can back this up?

    Update on post #14

  16. better spl

    in SPL - SOUND PRESSURE LEVEL

    Posted

    so i have another design, it is a box with a single L slot port

    the specs

    18.75 high x 37.75 wide x 18 deep

    the port is 17.25 high x 4.75 wide x 24.25 length

    tuned to 40 hz with 20.44in2 per foot

    the box will be 4.01 cuft after displacements

    will be changing the design up a lil more most likely for added bracing and then making a sketch up of the design. for bracing i was thinking right inbetween the subs but to try and do it with out blocking any part of the port so that it doesnt effect the airflow.

  17. Estimated SPL?

    in SPL - SOUND PRESSURE LEVEL

    Posted

    search the forum for the torres calc im almost positive there is a version for the mac. also what the dimension with the seats folded down? in order to fit a 14cuft box those seats will have to be folded down or taken out your choice. but the box will be some where around 25hx40wx40d with 1" thick wood of choice. that puts the box at 19.22cu ft before any displacement, add in sub displacement port and bracing and you should be able to get a good box right around 14cuft. just need to know the displacement and mounting depth of subs and i could get a good start of a design by monday.

  19. need help on a box

    in Subwoofers / Enclosures

    Posted

    Im looking for any one who can help me desisgn a ported four twelve box for a 1992 caprice. I have 4 re audio sex 12s on a soundstream tx1.2600. I might be getting two planet audio 1400s. Im trying to build my own box because my box builder got too expensive. Any help would be greatly appreciated. Thanks

    for starters make your own thread so that more people will see it, on that thread you need to include certain info.

    sub displacement?

    port or no port?

    if ported where do you want it tuned at?

    spl or sq build? im guessing spl

    net volume needed per sub?

    dimensions of the trunk?

  20. better spl

    in SPL - SOUND PRESSURE LEVEL

    Posted

    yeah, this is only my second box build and i like the sound i get from L shaped slot ports. this is a daily ran setup so if i get a 145+ out of it i will be happy. i dont exactly have money to replace anything if i blow it. already blew 1 of the 12s and had it warrantied. i am gonna round of the edges on the port walls and port opening to help with airflow.

    yeah my last setup was a single rf t2d412" wired at 2 ohms to the 1500.1bdcp so according to the birthsheet 1790watts. ran it like that in 2 different boxes for lil over 6 months when the 12" finaly smoked up the car. did a 143.9 with that. volts dropping down to 12.5-12.8 but now with the 2 12"S at 1 ohms volts drop to 12.0-12.3. getting a 220amp mechman alt and xs d5100 battery to fix that proplem. When its all said and done im hoping for a 1db gain from adding the second 12 and building the box for them. then around .5-1db gain from the electrical upgrade. then maybe .1 from another $100-$150 worth of dynamat extreme. i get all my stuff at dealer cost plus 10% from a local shop here so it helps a lot.

  21. better spl

    in SPL - SOUND PRESSURE LEVEL

    Posted · Edited by alaskanzx5

    the box design

    it will be 2 boxes like this one

    Capture3.png

    they will be joined together by sheets of mdf on all outter walls with an end result looking like this

    Capture2.png

    the box specs

    Capture.png

    the outter walls of the box will all be 1.5" in thickness and will have a total outside dimensions of 20.5" tall x 19.75" deep x 38" wide it will be a little bit of a tight fot for my trunk but will work great.

    let me now what you think, i have plenty of time to make changes as needed. wont be building the box for atleast another 4-5 months.

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