Bob Carver 27813, Руководство по эксплуатации

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slightly different than our conven-
tional tube bases. Look carefully so
that you line up the raised portion of
the KT120’s central base with the “key
way” on the tube base.
More About the Tubes.
The output tubes do not need to be matched,
as the sound of the amp does not at all depend on
matched output tubes. That’s because the DC re-
storer circuit eliminates the need to match tubes.
The only caveat here is that the output tubes
should all be the same type and vintage.
Looking at the amplifier from the front, left
to right: the first tube is a 12AT7, then a 12AX7,
and finally a second 12AT7. The output tubes are
KT120’s.
Any of the popular derivatives such as KT88,
KT90, or KT100 may also be installed. The mighty
6550 may be used as well — even the ubiquitous
EL34. However, performance will suffer a bit with
the EL34 because the design has been optimized
for the KT88 / KT120 / 6550. See page 10 for more
information on tube alternatives.
Why we can offer a 5-year warranty
on Crimson 275 tubes.
There is a meter on the front of the amplifier
which can indicate the health of the tubes — get a
bad reading, get free tubes!
As with our more expensive amplifiers, Bob
employs his unique twist on a DC restorer circuit
which has two main benefits —lower distortion
without dissonant side effects and extended tube
and amplifier life. Our amplifiers simply do not
run hot. Like their more expensive siblings, they
are the coolest running tube type amplifiers ever,
allowing you to actually touch the tops of the
mighty KT120s and never be burned! The internal
temperature of our amplifiers is a bit warmer than
the inside of your mouth resulting in an indeter-
minate lifespan.
Due to the unique design, all the components
in the amplifier undergo much less stress than in
conventional designs. Due to the efficiency of the
concept, our transformers can be lighter and de-
spite Bob Carver specifying esoteric steel for their
cores, it helps us sell a $4000+ amplifier for un-
der $3000. As with his legendary Sunfire tracking
power supplies, the bottom line is that you may
expect our amplifiers to outlive any other brand,
and our extended warranties underscore that fact.
We warrant the Crimson 275 for a full five
years ; that’s the amplifier and the tubes! We love
the fact that our finest competitors warrant their
tubes for three months. It’s all about economics.
If your tubes tend to fail, limit the warranty. A
manufacturer has no option; they must. Since
our tubes last for years, it costs us nothing to be
heroic.
Perhaps even more importantly, not only do the
tubes no longer fail every two or three years, they
do not degrade sonically as all tubes must when
boiling away in every one of our competitors am-
plifiers — a truly remarkable accomplishment and
typical for Bob Carver, Absolute Sound Magazine
Hall of Fame designer.
key way