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    Rc 415's Avatar
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    Need a vented box design. Revised with correct dimentions!

    Well, I pretty much did not get the help I needed in my last thread, so I am starting a new one with the exact dimentions I have to work with, and if anyone can help me calculate the volume of this box, help me design a port, and tell me where the ports should go I would greatly appreciate it.

    Here are the pictures/dimentions of all the space I have to work with in the back of my Extended cab Gmc Sierra under the bench.

    FRONT


    BACK


    I will be putting 1 Stereo Integrity Mag D2 12" Subwoofer firing upward into the seat, and I did leave enough room for the excursion of the woofer.

    The box for one subwoofer will need to be 1.5 Cubic inches tuned to 32 Hz.
    Mag Specs:
    Re: 3.5 Ohms
    Fs: 30.2
    Le: 3.5 mH
    Qms: 4.75
    Qes: .45
    Qts: .41
    Cms: 121.59
    Mms: 228 g
    Vas: 39.71
    Sd: 480 cm^2
    Bl: 18.35
    Spl: 85.74 dB

    (Here is the first thread for refrence http://www.caraudio.com/forum/showthread.php?t=155482 )



    Refs: Dalucifer, Showrides, MtxThunder9500, Flipx99, tgclark84, blue200sx, Jeepintn, got_focus?, stratusrt01

    1983 Chevy C-10 Short Bed Stepside
    Subwoofers: 2 DD9510F's
    Subwoofer Amplifier:
    Frontstage: Crystal SSCS 6
    Frontstage Amplifier: Diamond D3 400.4
    Head Unit: Alpine 9823




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    Re: Need a vented box design. Revised with correct dimentions!

    Quote Originally Posted by Rc 415
    Well, I pretty much did not get the help I needed in my last thread, so I am starting a new one with the exact dimentions I have to work with, and if anyone can help me calculate the volume of this box, help me design a port, and tell me where the ports should go I would greatly appreciate it.

    Here are the pictures/dimentions of all the space I have to work with in the back of my Extended cab Gmc Sierra under the bench.

    FRONT


    BACK


    I will be putting 1 Stereo Integrity Mag D2 12" Subwoofer firing upward into the seat, and I did leave enough room for the excursion of the woofer.

    The box for one subwoofer will need to be 1.5 Cubic inches tuned to 32 Hz.
    Mag Specs:
    Re: 3.5 Ohms
    Fs: 30.2
    Le: 3.5 mH
    Qms: 4.75
    Qes: .45
    Qts: .41
    Cms: 121.59
    Mms: 228 g
    Vas: 39.71
    Sd: 480 cm^2
    Bl: 18.35
    Spl: 85.74 dB

    (Here is the first thread for refrence http://www.caraudio.com/forum/showthread.php?t=155482 )
    Dude...
    mount your sub on the driver side firing up like you want.... then put two 3 inch elbow ports on the passenger side with the ends of the elbows inside the box faceing away from the sub... The elbows are about as equal to a 7" straight tube rather then if it were at a 90 degree angle as it is in the elbowe. so your tuning freq with the box that is on the top would be tuned to aprox 3.9 ft^3 tuned to about 32 hz.... Should do well. how does that sound?



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    Re: Need a vented box design. Revised with correct dimentions!

    JoelDirt:
    I would actually preferr to use Stereo Integrity's reccommended 1.5 cubes tuned to 32Hz. And if possible I'd like to stay away from Pvc as I hear it causes port noise, so aero or slot port.

    I calculated the total box volume as 3.0869 Cubic Feet. Does anyone get the same?



    Refs: Dalucifer, Showrides, MtxThunder9500, Flipx99, tgclark84, blue200sx, Jeepintn, got_focus?, stratusrt01

    1983 Chevy C-10 Short Bed Stepside
    Subwoofers: 2 DD9510F's
    Subwoofer Amplifier:
    Frontstage: Crystal SSCS 6
    Frontstage Amplifier: Diamond D3 400.4
    Head Unit: Alpine 9823

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    Re: Need a vented box design. Revised with correct dimentions!

    is thats the maximum space you have to work with you have 1.7cf to work with.




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    Re: Need a vented box design. Revised with correct dimentions!

    That whole box is only 1.7 Cu Ft?



    Refs: Dalucifer, Showrides, MtxThunder9500, Flipx99, tgclark84, blue200sx, Jeepintn, got_focus?, stratusrt01

    1983 Chevy C-10 Short Bed Stepside
    Subwoofers: 2 DD9510F's
    Subwoofer Amplifier:
    Frontstage: Crystal SSCS 6
    Frontstage Amplifier: Diamond D3 400.4
    Head Unit: Alpine 9823

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    Re: Need a vented box design. Revised with correct dimentions!

    i drew it up in sketch up and after you take into account wood thickness (3/4") thats what i came up with




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    Re: Need a vented box design. Revised with correct dimentions!

    I designed it in sketchup, where do you go to calculate volume?



    Refs: Dalucifer, Showrides, MtxThunder9500, Flipx99, tgclark84, blue200sx, Jeepintn, got_focus?, stratusrt01

    1983 Chevy C-10 Short Bed Stepside
    Subwoofers: 2 DD9510F's
    Subwoofer Amplifier:
    Frontstage: Crystal SSCS 6
    Frontstage Amplifier: Diamond D3 400.4
    Head Unit: Alpine 9823

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    Re: Need a vented box design. Revised with correct dimentions!

    you cant.




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    Re: Need a vented box design. Revised with correct dimentions!

    Well, how did you?



    Refs: Dalucifer, Showrides, MtxThunder9500, Flipx99, tgclark84, blue200sx, Jeepintn, got_focus?, stratusrt01

    1983 Chevy C-10 Short Bed Stepside
    Subwoofers: 2 DD9510F's
    Subwoofer Amplifier:
    Frontstage: Crystal SSCS 6
    Frontstage Amplifier: Diamond D3 400.4
    Head Unit: Alpine 9823

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    Re: Need a vented box design. Revised with correct dimentions!

    [IMG][/IMG]

    draw it up then click on the text tool, click on a surface and it will tell you how many sq" that surface is. in your case its 235.35 sq" now multiply that by how deep you box is
    depth=( 14 - (2 x wood thickness))
    depth=(14 - (2 x .75))
    depth=(14- (1.5))
    depth=12.5

    so then take

    (235.35 x 12.5) /1728= box volume
    1.7cf=box volume




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    Re: Need a vented box design. Revised with correct dimentions!

    Did you calculate in the play in the box?



    Refs: Dalucifer, Showrides, MtxThunder9500, Flipx99, tgclark84, blue200sx, Jeepintn, got_focus?, stratusrt01

    1983 Chevy C-10 Short Bed Stepside
    Subwoofers: 2 DD9510F's
    Subwoofer Amplifier:
    Frontstage: Crystal SSCS 6
    Frontstage Amplifier: Diamond D3 400.4
    Head Unit: Alpine 9823

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    Re: Need a vented box design. Revised with correct dimentions!

    oh man nevermind i should have looked more closly at your pictures. my calculations are all wrong didnt realize you had slants in there stipid me




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    Re: Need a vented box design. Revised with correct dimentions!

    The box diffrent measurements front to back, thats why i posted 2 pics.



    Refs: Dalucifer, Showrides, MtxThunder9500, Flipx99, tgclark84, blue200sx, Jeepintn, got_focus?, stratusrt01

    1983 Chevy C-10 Short Bed Stepside
    Subwoofers: 2 DD9510F's
    Subwoofer Amplifier:
    Frontstage: Crystal SSCS 6
    Frontstage Amplifier: Diamond D3 400.4
    Head Unit: Alpine 9823

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    Re: Need a vented box design. Revised with correct dimentions!

    i'm getting 1.65 cubes before any displacement.

    you can knock that down to around 1.55 cubes w/ sub displacement.

    and port displacement will prolly take you to around 1.25 cubes

    throw in some polyfil and you'll be fine



    2006 Chevrolet Silverado - Crew Cab Z71
    Kicker ZX 750.1
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    Bought from: Jamaica2G, Ayrton, Prowler573, netherland24, tRiGgEr, BassBEAST88, HCCAfan, HOAX_1
    Sold to: James Bang, dkguitarist, Scoobydoo, ~Magick_Man~, BigEM, lostsoul, sephiroth619, Skip01, squeak12, CELLERBR, bvr_j_0969, OneKrazyKeebler, negativezeroz
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    Re: Need a vented box design. Revised with correct dimentions!

    oops, nm, didn't do the slants (didn't see em)

    ignore my post



    2006 Chevrolet Silverado - Crew Cab Z71
    Kicker ZX 750.1
    Four 8" RE RE's

    Bought from: Jamaica2G, Ayrton, Prowler573, netherland24, tRiGgEr, BassBEAST88, HCCAfan, HOAX_1
    Sold to: James Bang, dkguitarist, Scoobydoo, ~Magick_Man~, BigEM, lostsoul, sephiroth619, Skip01, squeak12, CELLERBR, bvr_j_0969, OneKrazyKeebler, negativezeroz
    Traded with: Apollyon, zachzchw, jmanpc
    eBay: pmk0024 - 100% positive

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