Krell Evolution e Series Manual - Manual (Page 32)

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Questions and Answers
Q. Should I leave my Evolution e Series amplifier on at all times?
A. For maximum amplifier performance, leave the back panel power breaker switch on at
all times. This places the amplifier in stand-by mode. Evolution e Series amplifiers are
designed to be powered on and off from stand-by, using the front panel power button.
Q. When I turn on the amplifier there is a loud hum through the loudspeakers.
What should I do?
A. When a new component is introduced, a low frequency hum may occur in one or both
loudspeakers. Check all input and output connections and cables, making sure they are
of sound construction. See Troubleshooting System Noise, on page 24. If the
interconnects and cables are sound, you may be experiencing a ground loop. This can
often be easily eliminated. Please contact your authorized Krell dealer, distributor, or
Krell for suggestions on how to solve this problem.
Q. My loudspeakers are rated for 150 Watts. Are the Evolution models too powerful for
them?
A. No. A loudspeaker seldom is damaged from overdriving. More often, damage occurs
when an amplifier that lacks sufficient power is asked to handle heavy demand
situations such as high playback levels. These amplifiers may have very high 8 Ohm
power ratings, but in heavy demand situations they can be driven into clipping (in which
high power, high frequency harmonics go to the loudspeakers, due to loss of amplifier
power). Clipping can damage loudspeakers. Avoid damage to your loudspeakers by
reviewing your loudspeaker’s specifications, and exercise caution in heavy demand
situations.
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