Amplifier Operation; On/Off And Operation; Troubleshooting System Noise - Krell Industries Five-Channel Power Amplifier KAV-1500 Instructions For Use Manual

Amplifier Operation
ON/OFF AND OPERATION
When powering up your system, turn amplifiers on last. When powering down your
system, turn amplifiers off first. The procedures for amplifier operation follow.
1. Press the power button (1) on the KAV-1500 front panel. The blue power LED (2)
illuminates and you hear a click. The amplifier is now ready for operation.
2. With the output device muted or volume control fully lowered, select an output
device. Decrease or increase the volume control to the desired listening level.
3. Before turning the system off, mute or lower the output device volume. Press the
front panel power button (1) to turn the amplifier off. It is now safe to turn off the rest
of the system.
IMPORTANT
Always tum off the amplifier before changing input connections, and mute or fully
attenuate the preamplifier/eve/when switching sources.
The KA V-1500 has tremendous reserves of power and safely drives loudspeakers to
extremely high sound pressure levels. However, use care when setting high playback
levels and lower the volume level at any sign of loudspeaker distress.
Troubleshooting System Noise
When you mix and match high-performance audio components, each with its own
ground potential, a low frequency hum may occur in one or all loudspeakers. If this
happens when you place the KAV-1500 into your system, follow these simple
troubleshooting steps.
1. Check that all input and output connections are of sound construction.
2. With the amplifier off, remove the interconnect cables, then turn the amplifier on.
If the hum disappears, turn the amplifier off and reinsert one of the interconnect
cables. Turn the amplifier back on. Repeat this process for each cable.
3. If the hum reappears with one or both interconnect cables reinserted, the cable
needs to be replaced.
4. If the interconnect cables are sound, you may be experiencing a ground loop.
Please contact your authorized Krell dealer, distributor, or Krell for suggestions on
how to eliminate it.
Krell KAV-1500 Amplifier
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