J_west07 Posted March 19, 2016 Report Share Posted March 19, 2016 Looking for someone I can get a box design from for a FI sp4 15. Ported or 4th order. Going in an eclipse. I can pay for the design. I wanna build it but I just can't figure out how to tune etc. My rear seats are already removed etc for my 4th order wall I'll be getting later this year for 2 sp4's Link to comment Share on other sites More sharing options...
compcast Posted May 3, 2016 Report Share Posted May 3, 2016 Caraudiofabrication.com and ram designs do blueprints I haven't bought any yet but if I can't build one build one that sound good I'm gonna get one from car Audio fabrication Link to comment Share on other sites More sharing options...
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