Dual 10 Dodge Ram quad cab box
 

I just bought a A trends 10 dual quad cab sub box for my 15 ram and ken wood xr-w10f subs, my question is if I cut the passenger side to fit a 12 inch sub, how would it sound running 1 10 an 1 12 inch sub? Or am I better off sticking with just the 2 10s? I listen to a bit of everything.

do not mix subs , you are better off to stay with matching 10"