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Amplifier Troubleshooting
HOW TO TROUBLESHOOT SYSTEM NOISE
When you mix and match audio components, each with its own ground potential, a low
frequency hum may occur in one or both loudspeakers. This often occurs when
introducing a new component into a system.
If a low frequency hum emanates from the loudspeakers when you place the KAV-
250a stereo or KAV-250a/3 three-channel amplifier into your system, follow these
simple troubleshooting steps.
1, Check all input and output connections, making sure they are of sound construction.
2. With the amplifier off, remove the interconnect cables, then press the KAV-250a
power button (1) or KAV-250a/3 power button (14) to turn the amplifier
3. If the hum disappears, press the power button again to turn the amplifier off and
reinsert one of the interconnect cables.
4. Turn the amplifier back on. If the hum reappears with one or both interconnect
cables inserted, there may be a defective cable. Have the interconnect cables
checked before proceeding.
If the interconnect 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.
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KAV-250a and KAV-250a/3 Amplifiers
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