|YG Acoustics loudspeakers,
Delta Sigma amplification, DCS digital front end, Kimber Select
We played a couple of our
test CDs (Janis' Rachmaninov and Sailing to Philadelphia) which
were both stopped in the middle by the room's host.
The YG Acoustics website does not work
with Internet Explorer, and for those few who use that browser, or
those that use Firefox that do not want to be forced to sit
through Flash animations to get to the good stuff, here is a link
to the technical stats PDF file:
The claim to fame for these speakers is
their reported accuracy in frequency response: +/- 0.7dB. Sure
sounded accurate to me.
Listening was an interesting experience
here. The flat frequency response allowed part of my brain to
relax while listening, a part which does not usually get to relax.
Yes, our Marten Design Coltranes are a reported +/- 2dB - but
there was an apparent audible improvement heard here. The musical
passages of the Rachmaninov flowed better from one to the other,
each being of a more appropriate, more real, loudness with
respect to what came before and after. This is the good news - and
the advantages of a really flat frequency response is something I
think we will both attribute more importance to whenever we
audition a loudspeaker in the future.
A cautionary note: specifications
usually, including those for this speaker, list a frequency
response without detailing at what SPL the response was measured
at. As an obvious example of how misleading this is, the response
may be flat to 20Hz at 1 watt, but at 10 watts it may be down 8dB
at 20Hz. Another specification qualification that is missing is
what kind of frequency wave was used - was it a pulse or a smooth
What is missing in these specifications
is also a consistency of frequency response dynamics - which has
at least three dimensions:
1. Consistency: For say, one watt, does
the shape of the response to a pulse at, say, 30Hz match the shape
of the response to one at say 5000Hz.
2. Accuracy: how closely does the shape
of the response to a pulse match the shape of the response itself
3. Dynamics: How consistent are #1 and #2
at different wattages? [We talk about this in general terms as how
well a speaker handles micro-dynamics, midi-dynamics, and
The construction of these speakers out of
what looks to be aluminum also seemed to minimize cabinet
colorations. Most high-end loudspeaker manufacturers are getting
pretty good at this these days.
OK, the bad news. There was a real lack
of separation between the notes here. They all kind of blended
into each other. No doubt part of the cause of this is the low
efficiency of the midrange / tweeter assembly (a reported 85dB).
This assembly is the box at the top of the speaker. It is being
bi-amped by a 800 watts/channel stereo amplifier.
The subwoofer, the largest part of the
speaker, is self-powered. There was some disconnect between the
bass and the midrange. There was also a severe lack of
transparency and imaging - there was no way either if us were able
to convince ourselves that there was a real piano between the
My guess would be that in constructing
the crossover so that the flat frequency response was achievable,
they not only reduced the efficiency of the speaker quite a bit,
but comprised some of the other aspects of frequency response, as
described by the 3 points above.
Anyway, a mixed bag. These speakers are
very popular in Japan.
received this email Dec. 4th, a few months after this report:
Dear people of
carefully inspected your CEDIA / T.H.E. Show “show report”
I have not
found the customary clarification used by publications at both the
top and bottom of the page, which clarifies when a column is
written by someone with commercial interest (this is normally
written in large, readable letters).
Since you are
an audio dealership rather than an independent publication, I
kindly request that you mention this at the top and bottom of the
page. Otherwise, it may confuse readers who will believe that you
have no commercial interest in the matter.
I am asking you
this as a sign of good faith, with no legal implications at this
advise as to your planned course of
Well, we certainly want people to
know that we are a store. And, even though there are links
at the top and bottom of 100s and 100s of pages of show reports,
perhaps they are not visible enough and some people do not see
them? If so, this would suck. So, we will try to resolve this by
posting this on the
and seeing what our readers think would help us get people to know
we are a store but without being too obnoxious about it (i.e.
there is NOT going to be blinking text saying 'We are a store' 'We
are a store'.... :-) ).
And as far
as commercial interests in the matter go - I guess some
dealerships do 'trash talk' their competition, and it kind of
tarnishes all dealers as needing to lie to make sales. However, we
do have a real commercial interest in going to shows and that is
to find the really good shtuff, and talk about it... in our show
reports, with you all out there, and with each other. Later we
might even try to get it for our store. Most of the product lines
we carry were 'discovered' at shows. And in general, the more we
talk about what we hear at shows, the more people we meet who have
also been hearing the same things we do - but they thought they
were nuts because they thought they were the only ones
who were hearing these things - that there was something wrong
with them because they just... weren't... able... to hear
everything as being just won-der-ful. That there are always
tradeoffs and some people like making those particular tradeoffs
and some don't.
publication'? Love to see one of those someday.]