roycealbert1 Posted March 15, 2014 Report Share Posted March 15, 2014 i have a custom made box in chevy crew cab that is for 2 12s sealed. the subs i have right now are sundown sd 12s. but i just got a fi sp4 18 that i have siting in a seat. and my buddie is going to buy one of my 12s so i was wondering what would be the best way to make the box ported for a single 12. the box is 2.25 cubic feet and its a common chamber. one method i was gonna do is make a passive radiator out of my old blown power bass 12. would that be good enough or should i make some type of aero port in the box. Link to comment Share on other sites More sharing options...
Problematic Posted March 16, 2014 Report Share Posted March 16, 2014 I would sell both sa12s with the box and build a new one for the 18. Do that fi some justice Link to comment Share on other sites More sharing options...
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