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Message: <blockquote data-quote="SCcobra4me" data-source="post: 6832485" data-attributes="member: 621058">I'm running two IA 12" 187's off an old school Punch 200, I built the box (inside dimensions) 36" x 14 1/2" high x 17" deep with a 4"x15" slotted port 12" deep as recommended by the site specs, giving me roughly 4.5 cf^3.I wasn't too impressed (these subs seem like they had more in them) as it didn't hit that hard and the low's seemed to be bottoming out so I took out the slotted port and added two 4" pvc ports 12" deep.  Well the low's are lower, louder, cleaner now and the mid-bass seems to hit harder but I lost my highs.  What can I do to balance out the highs and get the mid-bass to hit a little harder??  Longer port, shrink the box, etc??  I'm willing to give up some of the low bass to balance out the others.Thanks.</blockquote>

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