Ok so I'm working with VERY limited space as I am fitting a 10" sub under the seat in my boat. The biggest I could make the box was 19" L x 13" W x 5" H. I used 3/4" MDF so subtract 1.5" from that. The sub I bought is a shallow one.
Rockford Fosgate R2 R2SD4-10
Specifications:
Size: 10-Inches...