Krell Industries KAV-250a/3 manual Amplifier Troubleshooting, HOW to Troubleshoot System Noise

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Amplifier Troubleshooting

HOW TO TROUBLESHOOT SYSTEM NOISE

Whenyou mix and matchaudio components,eachwith its owngroundpotential, a low frequency hummayoccur in oneor both loudspeakers. This often occurs when introducing a newcomponentinto a system.

If a low frequency humemanatesfrom the loudspeakerswhenyou place the KAV- 250astereo or KAV-250a/3three-channelamplifier into your system, follow these simple troubleshootingsteps.

1, Checkall input andoutput connections,makingsure they are of soundconstruction.

2.With the amplifier off, removethe interconnect cables, then press the KAV-250a powerbutton (1) or KAV-250a/3powerbutton (14) to turn the amplifier

3.If the humdisappears,press the powerbutton againto turn the amplifier off and reinsert oneof the interconnectcables.

4.Turn the amplifier backon. If the humreappearswith oneor both interconnect cables inserted, there maybe a defective cable. Havethe interconnect cables checkedbefore proceeding.

If the interconnect cables are sound,you maybe experiencinga groundloop. This can often beeasily eliminated.Pleasecontact yourauthorizedKrell dealer, distributor, or Krell for suggestionson howto solve this problem.

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KAV-250aand KAV-250a/3Amplifiers

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Contents KAV-250a Instructionsfor Use,v Owners Reference1999byKrell Industries, Inc. All rights reserved ContentsPage IllustrationsPage KAV-250aFront PanelMulti AmpThroughput IntroductionDefinition of Terms BridgingUnpacking Placement AC Power GuidelinesKAV-250a Frontpanel Front Panel Description KAV-250a See onKAV-250a BAK Panel 11 12 OutputBridged Output Bridged+ Back Panel Description KAV-250aInputs AGC-12 Fuses11 12 VDCRemotePower Out 12 12 VDCRemotePower IEC ConnectorKAV-250a/3 Frontpanel 1415Power Button Power LEDFront Panel Description KAV-250a/3 ZOO0 19, 20, 21 Inputs BackPanel Description KAV-250a/316, 17, 18 Inputs 22, 23, 24 Outputs27 12 VDCRemotePower Out 28 12 VDCRemotePower IEC Power ConnectorInput and Output Connections Optional SystemConfigurations Before Reconfiguringfor MATor Bridged OperationReconfiguringthe KAV-250a Formator Bridgedoperati tN LeftRightReconfiguring the KAV-250afor MAT Connecting the KAV-250a/3 Reconfigured for MAT PC boards SeeFigure 5 on page16 Reconfiguringthe KAV-250a/3for Bridged Operation See on page19Examplesof Connectionscenarios KAV-250aand KAV-250aJ3Amplifiers Examplesof ConnectionScenarios Multi Power Mode Amplifier Operation ON/OFF and OperationAmplifier Troubleshooting HOW to Troubleshoot System NoiseQuestion and Answer Warranty ReturnAuthorization Procedure Specifications KAV-250aStereo AmplifierKAV-250a/3Three-Channel Amplifier KAV-250a

KAV-250a/3 specifications

Krell Industries has long been a name synonymous with high-performance audio equipment, and the KAV-250a/3 is no exception. This power amplifier is designed to deliver an exceptional listening experience for audiophiles who demand both power and precision in their sound systems. The KAV-250a/3 integrates advanced technology and craftsmanship, earning its place in both home theater and high-fidelity audio systems.

One of the standout features of the KAV-250a/3 is its robust power output. With a staggering 250 watts per channel into 8 ohms, and an impressive 500 watts into 4 ohms, this amplifier is capable of driving even the most demanding speakers with ease. This allows for a dynamic range that brings music to life, making every note and subtle sound clearly audible.

The KAV-250a/3 employs Krell's proprietary CAST (Current Mode Amplification) technology. This technology minimizes distortion and enhances overall audio performance by allowing the amplifier to reproduce audio signals with minimal interference. The result is a sound that is both rich and detailed, providing a tactile listening experience that engages the listener fully.

In terms of build quality, the KAV-250a/3 stands out with its meticulously engineered chassis. It features a heavy-duty aluminum front panel and a solid steel chassis that not only provides durability but also helps reduce resonant vibrations that can affect sound quality. The design incorporates a cooling system with large heatsinks, ensuring that the amplifier remains cool even during extended listening sessions.

Additionally, the KAV-250a/3 includes multiple input options, allowing it to seamlessly integrate with various audio sources. It also features balanced XLR inputs, which provide increased noise rejection and signal integrity for high-end setups.

Krell’s commitment to delivering superior sound is evident in the KAV-250a/3's performance. It produces a sound stage that is both expansive and detailed, allowing users to hear nuances in their favorite recordings that may have gone unnoticed with lesser amplifiers. Overall, the Krell KAV-250a/3 embodies a fusion of power, technology, and craftsmanship, making it a top choice for audiophiles seeking an unparalleled audio experience.