I have a spare 15 laying around and am thinking about building a JBL Scoop style cabinet for it. It's a cabinet that I don't intend to haul around...I've got small cabs for that. Just a fun and weird project (I like making plywood form curves). So, what is the general tone of a JBL 4530(?) scoop? Also, in the '80s, did JBL sell these with just the K140 driver or were others used? Thanks!