I've heard the Summits this afternoon. They were connected to a Linn setup, that was including a multichannel 100-watt Chakra Linn amps.
My feelings were as follow
CDs / Dire Strait's Brother in Arms - Hayley Westenra's Pure - Sarah Brightman's Harem
The very first impression I had with the Summits were that they had an interesting sweet spot. With the Clarities, I have to sit and to listen. If I move a little too much, I lose quite a significant part of the signal. With the Summits, I could walk in the room, keeping most of the music intact... Which is a good news for me - I enjoy quite a lot walking when I'm listening to music, giving a phone call, etc...
The vertical dispersion has been greatly improved as well, though the medium are affected when I stand up - maybe I'm too tall...
The second impression I had was the linearity of the signal. My Clarities are limited to 46 Hz, the Summits go down to 23-24 Hz... In my setup, the Grotto is helping to reproduce bass frequencies, but it's a bit difficult to find parmeters that allow the Grotto to be as efficient when listening to 2-Channel music as well as multichannel tracks...
And then I let myself being subdued by the pannels themselves... These Summits are full of life, and though I knew perfectly well, after so many years, Brothers in Arms or Pure, I was amazed by the clarity of the sound, especially the voices. Though the Clarities are already doing quite a nice job for it!
I was rather disappointed with Harem though. I do love this sensual CD, mixture of European classical music and Arabic influence. The only bad point is that, like all Sarah's recording, its technical quality is quite poor. On my current setup, I could improve its reading thanks to the PS Audio P500 though which the Denon is connected (don't ask me why). I'll have to re-check that point when I get the Summits home.
SACDs / Dvorak's Symphony # 9 (New World) - Johann Sebastian Bach's Toccata & Fugue in D Minor - Georg Friedrich Händel's Organ Concerto volume 2 - Chant Wars
This is where it was quite obvious that the auditorium setup was not great. The Center speaker was from the different brand (HP only), the Script i were not very well positionned (too much behind... and too low as they were standing on the floor), and the Dynamo subwoofer was so discreet that I noticed its presence after the session was over only. As a result, I listened to my SACDs more like CDs than real multichannel recordings! What was really weird is that the dealer assured me that he has set each speaker's level with a soundmeter... I couldn't believe it...
I was quite amazed by the details obtained on Händel's subtle concerti, as well as the magnificent Bach's Toccata overture. This latter confirmed what I thought when listening to Dire Straits - separate subwoofers are not required with such speakers, especially as my Grotto has the same HP than the Summits, and the same level of amplification as well...
On the other hand, Dvorak's fourth movement was not very convincing. SACDs are notvery good when it comes to symphonic music. ESL as well. But in this case, I was disappointed by the lack of power when the music went crescendo... IMHO, the Linn 100-watt amplification might be the main one to blame...
DVD Audio / Eagle's Hotel California
Very, very good... Once again, the Summit's integrated (sub)woofer was perfect. The music was perfect, strings and voice were really present, and amazingly, when I played with the volume, nothing was lost when it was low...
As a whole, a rather satisfactory experience. According to the dealer, the Summits are not broken in yet, which means that they should be much better. We agreed I should get them home for the next week-end, to evaluate their interaction with my room's accoustics, with the H/K Signature amplification system (at least twice as powerful as the Linn provided that Linn and H/K have a common definition of watts), and what worries me more, its integration with the other ML speakers...