I am planning to do this project this summer and will gladly document my steps. It is likely that we will come up with different designs for different configurations and air volumes. I’m currently building a wedge box for a low profile 10. If I like the output I’ll then build an in-seat box.
If you know the URL for SirGCal’s website the plans he posted there may be on the way back machine at archive.org
If you know the URL for SirGCal’s website the plans he posted there may be on the way back machine at archive.org