Subwoofer Stokes Posted May 2, 2014 Report Share Posted May 2, 2014 Friend has 2 m class d4 12s in a 3 cube box after displacement with a port 3x11.75 tuned to 45 hz. Box dimensions are 35.5l x 13.25w x 15h. Subs one each side of box facing up with port in between facing up. Im thinking of building 2 sealed chambers and extending his port 6 inches. This would tune him around 38 and the sealed chambers would be close to 1 cube together. Is this a good frequency for a 4th order and is the sealed size about right compared to ported? <p>Black 1997 Chevy C1500 Ext. Cab5.7L 350 VortecDual 22" Glasspack ExhaustRacing Chip/Programmer.373 Gears W/ Shift KitCold Air IntakePioneer Deh80-PrsSubwoofers-Fi Q motor, 18 6 spoke basket, SPL Audio recone Link to comment Share on other sites More sharing options...
Subwoofer Stokes Posted May 2, 2014 Author Report Share Posted May 2, 2014 *before displacement! <p>Black 1997 Chevy C1500 Ext. Cab5.7L 350 VortecDual 22" Glasspack ExhaustRacing Chip/Programmer.373 Gears W/ Shift KitCold Air IntakePioneer Deh80-PrsSubwoofers-Fi Q motor, 18 6 spoke basket, SPL Audio recone Link to comment Share on other sites More sharing options...
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