Krell Industries manual Operating Your FBI, Amplifier Operation

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Operating Your FBI

This section provides information about operating the Fully

Balanced Integrated amplifier. The FBI provides basic input selec-

tion and volume control operation from the front panel. The remote control includes additional preamplifier and volume func- tions as well as compact disc transport and amplifier controls. See Remote Control Functions, on page 16, for more informa- tion.

Amplifier

Operation

Note

The FBI is easy to operate. However, great care should be exer- cised when operating a system that includes the FBI, because of the amplifier’s power output. Switching between active sources without muting the preamplifier output, or bumping/miscuing a device, can generate large transients at low frequencies. The FBI may generate enough power with these transients to damage most loudspeakers. To avoid damage, be sure to switch all sources with the preamplifier level either muted or fully attenuat- ed. Do not change inputs to the amplifier while it is on.

Krell amplifiers have large reserves of clean power and can safely drive loudspeakers to higher sound pressure levels than other amplifiers. However, use care when setting high playback levels and lower the vol- ume level at any sign of loudspeaker distress.

ON/OFF AND STAND-BY OPERATION

When powering up any system, always turn amplifiers on last. When powering down, always turn amplifiers off first.

1.After the FBI is connected to AC power, place the back panel power breaker switch in the up position. The red stand-by LED (3) on the front panel is illuminated.

2.When the amplifier is in stand-by mode, turn the FBI on by pressing the power button on the front panel or the power key on the remote control (1). There is a short wait period, while the amplifier power stages are started. The front panel display counts down the wait period and shows 000 (zero volume) The blue power LED (2) illuminates, and the red stand-by LED

(3) turns off. The FBI is now in the operational mode.

3.With the amplifier in the mute position, or the volume control fully attenuated, select a source from the front panel or the remote control (5, 6, or 7).

4.Start playing the source.

Krell FBI

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Contents Instructions for Use Owner’s Reference Contact Information FBIContents Illustrations Introduction Revolutionary Krell Cast Technology Voltage Signal Transmission Traditional Audio SystemCast Cable Construction Configurations Definition of TermsInput and Output Connections Technology OperationUnpacking Placement AC PowerGuidelines FBI Front Panel Power Front Panel/Remote Control DescriptionAnalog SourceMode Indicators Battery Installation and Removal Remote Control OnlyBal Balance Keys Remote Control Only FunctionsFBI Back Panel Amplifier Channel Outputs Analog Inputs Analog Outputs Back Panel DescriptionPower Convenient Lifting Device RemoteConnections Connecting the FBI To Your System Using BalancedConnection Steps Amplifier Operation Operating Your FBITape Input Output HOW to Activate AN Input for Theater Throughput Optional ConfigurationsPreamplifier Outputs How to Troubleshoot System Noise Questions and Answers Warranty Warranty Return Authorization Procedure Gain Output Power SIGNAL-TO-NOISE RatioPower Consumption Remote Control

FBI specifications

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