tristan560 Posted May 12, 2009 Report Share Posted May 12, 2009 I used to have 112.5 sq inch of port for 4.3 cu ft for a single 15.Thats over 26 sq in per cube. Played lows just fine even with 40Hz tuning. Bigger port means more power handling around tuning. Thats a little big... Quote <u>99 Jimmy SLT 4WD</u> Systemless. <u>99 Grand Prix GTP</u> DC XL 12 on 1.5k tuned lowwwwww. Link to comment Share on other sites More sharing options...
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