@@musicvibesonly Sorry I didn't see this reply.Okay 1) Granite cabinate 2) External crossover 3) Upgraded internal wiring and parts 4) Two super tweeters 5) Two large Rel ref subs Next will be active crossover. I bet these are nipping on the heels of the Acora's. The cabinate was the hard bit but my local quarry did such a fab job they look a little like Acora's