A couple of weekends ago, I snared some lovely 1975 Klipsch La Scalas. I had to drive a few hours for them. I knew the crossovers were upgraded. What I did not know was that all drivers were also upgraded! The midrange driver is what the Klipsch forums recommend. It has the correct Crites crossover. The sensitivity of these babies is beyond what I was expecting or hoping for. Just incredible.