Krell Industries 600 - Amplifier Operation

Powbr Balanced amplifier. If not utilized, KRELL reserves the right to
refuse warranty service due to DC related damage. Please contact your
KRELL dealer for =assistance.
Amplifier Operation
Understanding the operation of the Full Power Balanced amplifiers is very easy.
Equally important is an understanding of the care that should be exercised when
operating the system as a whole, in relation to the enormous power output of the
Full Power Balanced amplifiers. Simple mistakes, such as switching between
active sources without muting the preamplifier output, or bumping/miscuing a
cartridge, can generate large transients at low.frequencies. With this type of
transient the Full Power Balanced amplifiers can generate enough power to
damage most loudspeakers. All switching of sources should be done with the
preamplifier level either muted or fully attenuated. Inputs to the amPlifier should
not be change--d while the amplifier is on.
NOTE: Care must be taken when setting high playback levels. Because of their
tremendous.reserve of clean power, KRELL amplifiers can safely drive speakers
to higher sound pressure levels than other amplifiers. Always turn the level
d._own at the first sign of speaker distress.
Description of On/Off and Standby Operati6n
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turned off first.
Locate the power breaker on the rear panel of the amplifier. Move the switch
to the ON position. The power LED, labeled P, will illuminate on the from
panel. This engages the input circuitry and sets the amplifier to the Standby
position.
Press the silver power button on the front panel of the amplifier. The
regulator LED, labeled R, will illuminate. Once the regulator secures control -
of the output stage, the bias LED, labeled B, will illuminate. The Sustained
Plateau Bias IIsystem is now engaged. After the protection circuits have
confirmed that safe operating conditions exist, the input relays will engage.
You will hear a click. The amplifier is now ready for operation.
3. With the preamplifier in the Mute position, or volume control fully attenuated,
select a source. Turn the volume control up to your desired listening level.
4. When turning the system off, lower the volume of the preamplifier completely
or place it into the mute or stand-by position. Switch the amplifier to Standby
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