Tim Anderson Posted October 26, 2015 Report Share Posted October 26, 2015 Alpine bassline swa12 box. I'm using three-quarter inch HDF. My measurements are exterior box W-36 inches D-21.5 H-12.25 & vent is W-14.5xH-2xD-12.25 tuned to 29Hz. The subs are firing up vent on bottom towards back horizontal for a 96 GMC Jimmy. Am I even close on this, the vent im the big question? Link to comment Share on other sites More sharing options...
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