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    Sspider's Avatar
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    port help please

    I need help figuring out that size of my port.
    the box- 4.0
    the port tunning- around 33 hz
    the subs- 2 DD 3512

    thank you

    Sspider



    ............under construction.......

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    ShaunMac's Avatar
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    What are the dimensions of the box?
    Do you want to use a slot port? round port?
    Do you want to use 1 or 2 ports?
    What are the T/S Parameters for the subwoofer?

    This info will help us help you.



    Pioneer 8600 - Profile Amp-Infinity Speakers - L7 Subwoofer

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    1 slot port
    tuning around 33 hz
    in side dimensions-

    h- 17.5
    w- 35
    bottom depth- 20
    top depth- 5.5

    and the subs are 2 DD 3512b
    Qts-0.36
    Qes-0.39
    Qms-4.81
    Vas-40 L

    will be powered by one RF bd1500.1 running at 2 ohms, the car is a 94 VW golf 4 door

    i hope i didn't leave something out, if so, let me kno
    i wanted to run the port vertically down the middle between the two drivers but because the top depth is so small, i dont think i can, so it will have to be running hoziontally on the bottom..

    sspider



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    AIM CisKO4u

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    ShaunMac's Avatar
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    So you have a wedge shaped box.

    Are your speakers on the flat side or the angled
    side of the box?

    How much clearance is there between the back of
    the box and the back of the subwoofer?

    Are those dimensions internal or external?

    What is the Xmax for the sub?

    Is your box shaped like this box pictured?
    Attached Thumbnails Attached Thumbnails port help please-wwww.jpg  



    Pioneer 8600 - Profile Amp-Infinity Speakers - L7 Subwoofer

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    Sspider's Avatar
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    the dimensions are internal and the box almost looks like that, except for the fact that i have angle both in front and back, the biggest angle being in the back between 30-35 and around 10-15 in the front. the xmax of the subs is 17mm. the subs mounting depth is 6.5 inches...

    sspider



    ............under construction.......

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    Well I'm not to sure how to figure out a slot port for your
    box design. I would be glad to help but I don't want to
    screw up your box.

    I'm sure someone else here will be able to help
    you out with porting your box.



    Pioneer 8600 - Profile Amp-Infinity Speakers - L7 Subwoofer

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    Sspider's Avatar
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    i just need port length...
    i was thinking of a 2x13 but thought that was t0o small, so how about 3x15....or n e thing not exceeding 4x18...

    sspider



    ............under construction.......

    AIM CisKO4u

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    13 x 2 slot port @ 11" long

    15 x 3 slot port @ 21" long

    18 x 4 slot port @ 35.5" long

    for 33Hz tuning



    Pioneer 8600 - Profile Amp-Infinity Speakers - L7 Subwoofer

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