Evolution Technologies manual Evolution 222 Features and Technology

Page 6

SECTION ONE

Evolution 222 Features and Technology

This section describes the innovative features and technology of the Evolution 222 preamplifier, and defines CAST and other key terms used in this reference.

Features

The Evolution 222 has an open loop bandwidth that exceeds 1 MHz and a balanced Krell Current Mode design, terminating in Evolution CAST ™. CAST inputs and outputs drive a newly designed current mode balanced input stage. Class A, balanced circuitry is used throughout the preamplifier. Cascoded, current mirror input and output stages utilize an LED voltage reference to achieve an exceptionally linear state of operation. There are 310 transistors utilized in each channel, and all are Class A biased. A robust power supply is on board for excep- tional audio performance.

Image 6

Contents Evolution Important Safety Instructions Contents List of Illustrations Letter from Dan D’Agostino Evolution 222 Features and Technology FeaturesRevolutionary Krell Cast Technology Voltage Signal Transmission Traditional Audio SystemHow Cast and Krell Current Mode Interact Cast BasicsCast Cable Construction Evolution CastBest Musical Performance Definition of Terms Inputs and OutputsOperation Krell Current Mode TechnologyPage Placement AC Power GuidelinesConnecting the Evolution 222 to Your System Quick StartOperating the Evolution Anatomy of the Evolution SelectorsChassis PowerFront Panel Description Remote Functions on the Front PanelDisplay Navigate/CustomizePreamplifier Functions Level Control Level Control Knob or Level KeysEvolution 222 Remote Control Amplifier Functions Remote Control DescriptionBattery Installation and Removal Balance FunctionsCompact Disc and DVD Functions Evolution 222 Back Panel Inputs ConfigurationsBack Panel Description Outputs23 RC-5 Remote Connections on the Back Panel22 RS-232 24 12 VDC In/Out 12 V TriggerPhono Stage Connector Phono Power PortIEC Power Cord Receptacle Connecting the Evolution 222 to Your System XLR Pin ConfigurationInput and Output Connections Connection Steps Evolution 222 Operation On/Off and Stand-by OperationTo Turn Off The System Volume Knob or Level Keys Customizing the EvolutionNavigation Conventions Menu Functions AC MainsBalance channel Balance input trimDisplay Menu Button or Key Enter or exit the menuInfo Input Level Trim Input NameInput Phase Input TriggerEvolution 222 responds to 12 V input trigger commands IR Out ControlLink Control can Link MuteOutput Trigger RC-5 Control RecallRS-232 Control SaveTheater Mode Volume Display Troubleshooting System Noise Warranty Page Return Authorization Procedure To contact the Krell Service DepartmentSpecifications InputsConnair Road