Krell Industries KCT manual Troubleshooting System Noise

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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 both loudspeakers. If this happens when you place the KCT preamplifier into your system, follow these simple troubleshooting steps.

1.Check that all input and output connections are of sound construction.

2.With the preamplifier off, remove the interconnect cables, then turn the preamplifier on. If the hum disappears, turn the preamplifier 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 Current Tunnel

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Contents Krell Current Tunnel Cast Preamplifier Instructions for Use Owner’s ReferenceKCT Contents List of Illustrations Definition of Terms IntroductionKrell Link Theater ThroughputOperational Mode Krell Current Audio Signal Transmission CastStand-by Mode Krell Current ModeRevolutionary Krell Cast Technology How Cast and Krell Current Mode InteractCast a New Approach Cast BasicsBest Musical Performance Unpacking PlacementAC Power Guidelines Operating the KCT Preamplifier Connecting the KCT PreamplifierQuick Start If you wish to turn your system off KCT Front Panel Remote Control Functions PowerFront Panel Description Preamplifier FunctionsMenu Functions DisplayLevel Control KCT Back Panel Inputs Back Panel DescriptionTape Output Main Zone OutputsBack Panel Remote Connections Phono Stage ConnectorKCT Remote Control Amplifier Functions Remote Control DescriptionBattery Installation and Removal 38 Z2 Key Main Zone KeyInput Select Keys Tape KeyCompact Disc Functions Input and Output Connections Connecting the KCT Preamplifier to Your SystemKrell Link Operation Connecting Components through Krell LinkKrell Link Connections and Operation Tape Input and Output ON/OFF and STAND-BY Operation Operating the KCT PreamplifierMain Zone Only Main Zone and Zone 2 OperationTo turn off this option Play and Record Zone 2 OnlyTo stop recording Troubleshooting System Noise Customizing the KCT Preamplifier To adjust the fixed offset for zoneZ1 and Z2 Balance Input Name MenuInput Balance Trim Input Level TrimTheater Throughput Mode Mute Menu Output Trigger SetupBrightness AC Mains Menu Tape Output MenuProgram Remote Menu Input Trigger SetupKrell Link Setup MemoryExit Menu Trigger Delay SetupQuestions and Answers Warranty Return Authorization Procedure Tape Loop SpecificationsTHD+Noise Page Krell Industries, Inc Connair Road Orange, CT 06477-3650 USA