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Reload Thread: Ported Box for 2 12" PowerBase Evo's

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    07BronzeFuz's Avatar
    07BronzeFuz is offline DueceEDuece

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    Mar 2009
    Nashville North Carolina
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    Help Me with ported box

    Guys I just got 2 of the older style Powerbase evo's. They have the blue cone and chrome baskets. I email powerbase and they recommend this

    Optimum Ported Volume ES 12DS Standard Metric
    Gross Vb Internal 2.1 cu.ft 59.47 Liters
    Slot Port (W x H = Sq. In) 15 x 15 D x 38.1cm D
    Or Alternate Circular Port (2) 3 x 13 D (2) 7.6 cm x 33 cm D
    Fb (Box Tuning) 36.45 Hz 36.45 Hz
    F3 (-3dB Cutoff) 28.22 Hz 28.22 Hz
    Pe (Watts-Rms) 400-800 Watts 400-800 Watts
    Subsonic Filter Setting If Applicable 25-30 Hz 25-30 Hz

    Small Ported Volume ES 12DS Standard Metric
    Gross Vb Internal 1.6 cu.ft 45.3 Liters
    Slot Port (W x H = Sq. In) n/a n/a
    Or Alternate Circular Port 4 x 16 D 10.2 cm x 40.6 cm D
    Fb (Box Tuning) 36.59 Hz 36.59 Hz
    F3 (-3dB Cutoff) 33.92 Hz 33.92 Hz
    Pe (Watts-Rms) 300-700 Watts 300-700 Watts
    Subsonic Filter Setting If Applicable 20-25 Hz 20-25 Hz

    Sealed is optimum sealed is 1.25 and large is 1.75. with 16 oz of polyfill.

    I need help on placement of the woofers and port. I really want a slot port but may have to do it on the side. I have about 35" from side to side and maybe 17" in height. I'm not looking to fill the entire trunk up either with box. What should I do. Of course I want it to be loud as possible. I also have a 60/40 folding seats in the rear. I'm afraid a slot port will take up so much cu ft inside I might have to do PVC 4".
    Last edited by 07BronzeFuz; 07-10-2009 at 07:54 PM.

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