Avantgarde Trios, way back before the latest updated version:
Some of you may remember the San Francisco Stereophile Home Entertainment Show in 2003. If so, you may recall the extraordinary and never-again-equaled response that happened in our (Avantgarde-USA, Balanced Audio Technology, Cardas Audio, Running Springs, etc.) demo room. Srajan Ebaen – 6moons.com – wrote about it, as well as Robert Harley in TAS, and others.
As always at the shows where we exhibited, I voiced that system to the room. The system was bi-amplified. Unfortunately, we had a couple of less-than-pleasant peaks in the boundary-dependent-region (in this case, below 100 Hz - the Avantgarde Trio Basshorn’s operating area). Expecting some difficulties, I had brought my Rives PARC (Parametric Adaptive Room Compensation), which was designed to solely address that region. When I mentioned to Richard Rives Bird that I was bringing it to the show, he offered to come by our room, and tweak it with his computer program. True to his word, when I let him know I wanted him to drop by, he was nice enough to come by and run the program.
Richard had a ton of work to do throughout the show. He didn’t cut short his time, but he based his adjustments on near-perfect measurements. Satisfied with the results, he went on to other projects waiting at the show.
There was no question that the response was very flat now. Technically, it was superb. The result of Richard's correction was very flat response. Unfortunately, after I listened later, my response to the music was similar. Flat.
I felt that the system was missing a bit of musical involvement. The emotional hook was not quite there.
I should mention that we were only using the PARC in the line from the BAT preamp to the amps driving the BASSHORNS. The amps driving the TRIOS were direct from the preamp.
So, I spent another couple of hours building on what Richard had done (LOL – Richard might have had a different description). I didn’t change the frequency cuts to the peaks that he introduced, but I did slightly adjust their “q” (width) and the level of their amplitude.
When I was satisfied, I was feeling good about the sound – the music was engaging at all levels and with all genres. I privately wondered if the subsequent measurements would have been as precise. My guess was — probably not.
Here’s the cool thing – We got standing applause
at the end of every demo for three days – an almost-unheard-of response to a show demo! IMO – listeners weren’t responding to the technical aspects of the sound; they were releasing emotions stimulated by the musical experience.
FWIW – I have never since seen such response from show attendees. It was unique in my long experience in the industry. In addition to the original mention, Robert Harley mentioned it in TAS again “The same system at a San Francisco show elicited a standing ovation with wild applause at the conclusion of Pink Floyd’s The Wall—the only instance of such a reaction to a show demo in memory."
http://www.theabsolutesound.com/art...lifier-and-rex-ii-monoblock-power-amplifiers/