wallflower:It seems there are a lot of comments about
dynamics, low distortion, bass response, etc..., however I haven't
noticed comments about the tonal character of instruments (e.g. the
sound of a Fender Stratocaster on a Fender Twin Reverb amp, or a Gibson
Les Paul on a Marshall Stack, or a 1936 Martin D-28, or a 1923 Gibson
Lloyd Loar mandolin, or a Steinway Grand Piano, etc...). I've realized
that electronics play a large roll in providing a natural or "real"
sense of the tone and character of these particular instruments. Can
the Jubilee owners speak to the unique characteristics that the
combination of Crown SS gear and Jubilees provide in this
regard?
I think what is often meant by "low distortion"
is that the speakers are imparting much less of their own sonic
signature, which means less masking of the different tonalities of
different instruments. In other words, stuff sounds more like it's
supposed to...Were you looking for specific examples, or were you just
wondering if it wasn't all about being clean at loud levels?
As far as amps, I feel there is absolutely an
audible difference when different amps are being used, but the
magnitude of that difference is much smaller compared to the magnitude
of difference imparted by the speakers themeselves.
Maybe I got
lucky, but the last time I listened to a bunch of amps powering
Jubilees
I made sure I didn't know which side had which amp and even closed
my eyes so that blinking lights wouldn't fake me out either...everytime
I was able to identify which amp was which. Heck, I was even able to
distinguish between Crown and QSC (I've long held a bias for Crown, but
was kinda interested to see if I was tricking myself). One of these
days I'd like to do some formal blind ABX
testing, mostly because of all the experiments indicating that a
difference shouldn't be heard...
With that in mind, it seems to
me that the differences between amps become less dramatic when the
quality of the speakers increase. I suppose it might make sense if one
believes that there are thresholds of audibility for different types of
distortions...like if your speakers are a touch on the harsh side and
you
throw on a harsh sounding amplifier, then the problem is going to
compound. If you get rid of the harshness from the speakers, there is a
chance that the
harshness from the amplifier alone isn't enough to cross that threshold
of audibility. That's not to say that the distortion of the Jubilee is
inaudible, but compared to other speakers (like the Khorn), the
difference is far from subtle.
In other words, I hear bigger differences between amps on the Khorns than I do on the Jubilees.
I think I can see where your concern is coming from though. When
6foot8 purchased the first pair of Jubilees (he went with a 3-way), I
remember thinking that the K402 was a "PA horn" and designed
for throwing the sound a long distance. I have since realized that I
was sorely mistaken and that it's quite the opposite situation with the
K402. But when you see people throwing "PA amps" at the speakers, I can
understand that it's hard to think they're not just interested in crazy
SPL. The avid anti-horn crowds have used this argument all the time,
and perhaps they're justified a bit too because there's a lot of bad
horns on the market (especially in the PA world). However, a good horn
is a good horn...and the K402 is outstanding, especially in a small
home environment - you just gotta hear it to believe it.
The biggest reason that people have been using the Crown XTi is
because the benefits of an active crossover far outweigh the typical
compromises that might otherwise be associated with "non-audiophile
amps". I think it's been mentioned already, but the difference is night
and day on vocals. People are not going with the XTi's because of their
power handling...they just happen to be the cheapest way to get an
active crossover with very decent sounding amps. The XTi's also offer
48dB/octave which surprisingly sounds a lot cleaner than the
24dB/octave offered by the EV Dx38. The steeper slopes clear up the
depth of the soundstage and help isolate the instruments from each
other - in other words, less blurring and it's easier to concentrate on
the individual parts in the music.
Just to put it into perspective, you can get a pair of XTi's for
under $1k, which is less than the cost of passive crossovers and less
than the cost of an EV Dx38...and with the latter two options you still
need an amp, or two amps if you're going active. You could throw the
best amp(s) with the best crossovers at the Khorn, but it'll be cheaper
to buy Jubs with a pair of XTi's and you'll still end up with
significantly better sound. Would the Jubilee sound better with a
better crossover and better amplification? Absolutely, but it always
comes back down to your budget...and whatever other constraints that
might be present.
Btw,
I don't mean to imply that the XTi is a bad amp at all...in fact, they
sound very good. If you do a little homework, you'll notice that a lot
of high-end custom theater installers have been using banks of XTi's
for dedicated rooms and usually ignoring the DSP sections...
-Mike Bentz
~It's all about compromise~
"Crown, Active, and Horns"