I used Lowthers DX3 on open bafle on top of my Altec Valencia 416 woofers (horn disconnected)
I did everything to those, I added a tweeter over 10khz first a Fostex FT17h and later a Beyma nice one dont remember the model... It was one of the best systems I had.
I eventually triamped it with passive line level Xovers
I even used an EQ for the bass amp (gainclone!)
It was lively, dynamic resolved, soundstage was never very good I guess it was the open bafle?
Suddenly, after about a year or two, one day I started hearing the whizzers, they never bothered me before, but just like that one day my ears realized they were there and I could not listed to it any longer...its a pitty because I really enjoyed that setup, I still have all the toys laying around somewhere...
I have been on a search since but I think I am getting there now...with better soundstage!!