Rockford fosgate punch 3 box design

[JimmySmithers]

I want to get two RF p3 and put them in a box. What would be the best box design? And i also might want to do four of them. 40.5 wide, 26 long and 20 high is my trunk space. Would that be possible? Also how many cubes would it be and at what frequency?

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[Wragold 10+ year member]

maybe you should just get alpine type r's