When I first connected them, I didn't have much time. I replaced my Cornwall IIs with the new (to me) Klipschorns. I have a pair of KLF20s also connected o the same Yamaha 2600 7.1 receiver. I didn't do anything more than just switch the wiring.
I turned them on, with the same settings which were present the last time I was in that space. The KLFs were set up so I could A/B them.
KLFs sounded great, and in comparision with the Khorns, they sounded much better.
Three weeks later, when I made it back to where the Khorns are, after checking the wiring for phase issues, I checked the reciever settings. Surround sound!#$%@. Once I switched to pure direct....MAGIC. and I mean MAGIC!!
KLFs still sound great, but not anything like Khorns.
As a side note:
I knew my Cornwalls had crossover issues, so on this trip I replaced the original 1986 crossovers with new ones from Crites. The difference is amazing. I bought the Cornwalls from a gentlemen who had them for a while but wanted to upgrade to something different. I think if he had done some research he would have saved some serious money by just renewing what he already had. (I'm fortunate that he didn't because for $500 plus the crossovers and titanium tweeters, I have a great sounding pair of Cornwall IIs.)