03-12-09: Bondmanp
I have heard Alan's speakers at two HE shows in NYC. The first time, he was
demonstrating the Boleros with his homemade flea-watt tube amp. (The
sound was delicious, btw, and to date, the Boleros remain my dream
speaker).
Thanks for sharing that info, Bondamp. It's interesting that Alan chose to use
different amplification. Did he have a Pass Labs amp in the room? I wonder if
he decided he didn't want to ship his Pass amp for reasons of economy or risk
of damage. I believe the Pass Labs amp he used at the two shows I attended
is his own personal amplifier, rather than a Pass Labs show demonstrator.
Since he lives in California and the show you attended was in New York, the
cost and risk of shipping a 150 pound Pass Labs X-600.5 could be
prohibitive.
FWIW, at my request, Alan Yun did demonstrate his SR-17 speakers with his
Silverline tube amp (can't recall the tubes or power output, but it was his own
design, and an amp he sells). I thought the speakers sounded tipped-up and
too hot in the highs for my taste. This demo was not part of his primary
demonstration that he repeated throughout the show, which focused on his
new Prelude and Minuet models powered by the monster Pass Labs amplifier.
I had an extensive email conversation with Ralph Karsten during the time I
owned the Atma-Sphere M-60 amplifiers. He once listed Silverline speakers
on his list of tube friendly speakers. After doing some research into the
Sonata III model subsequent to our conversations, he determined the Sonata
III model did not fit his criteria for speakers that work well with his OTL tube
amps (due to the impedance curve and specifications), and he deleted them
from his list. I recall Ralph saying that the Sonata III could be made
tube friendly if the woofers were wired in parallel rather than in series (could
be the other way around...). Doing so would change the impedance curve and
eliminate the impedance dip in the bass frequencies.
However, Ralph did acknowledge that other speakers in the Silverline model
line-up, including the Bolero model, do fit his criteria for tube friendly
speakers .

