Operating Your Fbi; Amplifier Operation - Krell Industries FBI Owner's Reference Manual

Operating Your
Amplifier
Operation
Note
ON/OFF AND
STAND-BY OPERATION
Krell FBI
FBI
This section provides information about operating the Fully
Balanced Integrated amplifier. The FBI provides basic input selec-
tion and volume control operation from the front panel. The
remote control includes additional preamplifier and volume func-
tions as well as compact disc transport and amplifier controls.
See Remote Control Functions, on page 16, for more informa-
tion.
The FBI is easy to operate. However, great care should be exer-
cised when operating a system that includes the FBI, because of
the amplifier's power output. Switching between active sources
without muting the preamplifier output, or bumping/miscuing a
device, can generate large transients at low frequencies. The FBI
may generate enough power with these transients to damage
most loudspeakers. To avoid damage, be sure to switch all
sources with the preamplifier level either muted or fully attenuat-
ed. Do not change inputs to the amplifier while it is on.
Krell amplifiers have large reserves of clean power and can safely drive
loudspeakers to higher sound pressure levels than other amplifiers.
However, use care when setting high playback levels and lower the vol-
ume level at any sign of loudspeaker distress.
When powering up any system, always turn amplifiers on last.
When powering down, always turn amplifiers off first.
1. After the FBI is connected to AC power, place the back panel
power breaker switch in the up position. The red stand-by
LED (3) on the front panel is illuminated.
2. When the amplifier is in stand-by mode, turn the FBI on by
pressing the power button on the front panel or the power key
on the remote control (1). There is a short wait period, while
the amplifier power stages are started. The front panel display
counts down the wait period and shows 000 (zero volume)
The blue power LED (2) illuminates, and the red stand-by LED
(3) turns off. The FBI is now in the operational mode.
3. With the amplifier in the mute position, or the volume control
fully attenuated, select a source from the front panel or the
remote control (5, 6, or 7).
4. Start playing the source.
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