I'm not really into the SPL machines, so I'm not going to pick your work apart. My only concern is that you're doing this to a MINI. I love those cars, but if I had one, it would be getting raced on the track, not in SPL contests. Nice looking car. Have you done anything to the engine? JCW stuff?
To bad it was usless. I put the box in the truck and tried both the Mag and the Sonic. Both lacked output and authority in all regions of the "bass" range. From 20Hz to 60Hz I was not impressed at all. Really pisses me off b/c I spent some much time on it. It had more authority in the upper range which makes me wonder if I screwed up with the tuning. So long story quick this build fails as well. Really pissing me off b/c this is the second build I've had fall totally on its face. Jon Did you try building a different port? I hope you're not just giving up on that box, it looks good.