Krell Industries 222 manual Remote Connections on the Back Panel, 22 RS-232, 23 RC-5

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(SECTION FOUR: Anatomy of an Evolution 222 continued)

Remote Connections on the Back Panel

22RS-232

The RS-232 port receives messages from a computer-based control system, providing integrated control of all preamplifier functions. The RS-232 input uses a 9-pin D-subminiature connector. See the Evolution 222 developer's ref- erence, entitled RS-232 Port: Sending Commands and Interpreting Data, for more information.

23RC-5 In

The RC-5 remote connector is used with a third party remote control system that provides RC-5 (IR) data with the carrier intact, via a wired connection. A stereo tip, ring, sleeve 1/8-inch mini connector is used in the following configu- ration: Tip = RC-5 data, Ring = +5 V, Sleeve = GND.

2412 VDC In/Out (12 V Trigger)

The preamplifier has 2 outputs that send, and one input that receives 12 VDC power on/off (12 V trigger) signals to and from other Krell components and other devices that incorporate a 12 V trigger. This allows you to turn other components on or off, or to and from stand-by, through the remote control. When the Evolution 222 is switched to operational mode and is connected to other components through the 12 V trigger, it sends a signal that will switch other components, allowing whole systems or parts of systems to be easily coordinated. For more information on customizing the 12 V trigger, see Input Trigger, on page 35. Mono 1/8-inch mini connectors are used in the following configuration: Tip = +12 V, Sleeve = GND.

Notes

When the Evolution 222 is in the operational mode, the 12 V trigger provides 12 Volts of DC output. When the component is in the stand-by mode or off, the DC output is 0 Volts.

A minimum of 30 mA is required to operate the 12 V trigger.

Consult the owner's reference of the components used in a custom installation to take full advantage of the remote capabilities of the Evolution 222.

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Contents Evolution Important Safety Instructions Contents List of Illustrations Letter from Dan D’Agostino Evolution 222 Features and Technology FeaturesVoltage Signal Transmission Traditional Audio System How Cast and Krell Current Mode InteractRevolutionary Krell Cast Technology 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 SelectorsPower Front Panel DescriptionChassis Remote Functions on the Front PanelDisplay Navigate/CustomizePreamplifier Functions Level Control Level Control Knob or Level KeysEvolution 222 Remote Control Remote Control Description Battery Installation and RemovalAmplifier Functions Balance FunctionsCompact Disc and DVD Functions Evolution 222 Back Panel Configurations Back Panel DescriptionInputs OutputsRemote Connections on the Back Panel 22 RS-23223 RC-5 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

222 specifications

Krell Industries has long been synonymous with high-end audio performance, and the Krell Industries 222 is no exception to this reputation. Designed with both audiophiles and casual listeners in mind, the 222 exemplifies cutting-edge technology, engineering precision, and a commitment to delivering exceptional sound quality.

At the heart of the Krell 222 is its audiophile-grade DAC (Digital-to-Analog Converter) that supports high-resolution audio formats, including DSD and PCM. This enables the unit to accurately reproduce music data at various sampling rates, providing a dynamic range and clarity that brings recorded music to life. The incorporation of proprietary Krell technologies ensures that the 222 minimizes digital distortion while maximizing audio fidelity.

Additionally, the Krell 222 features a state-of-the-art power supply designed to provide stable and clean power to its circuitry. This ensures that the amplifier can handle a wide range of audio signals without compromising sound quality. The unit employs advanced linear power supply technology, which is known for its ability to deliver consistent voltage under various load conditions, resulting in improved performance across all audio frequencies.

The connectivity options on the Krell 222 are robust, featuring both balanced XLR and unbalanced RCA inputs that facilitate seamless integration into various audio systems. With support for Bluetooth and network streaming, users can enjoy their favorite music from a variety of digital sources, enhancing the versatility of the unit. The Krell 222 also features a user-friendly interface, allowing for easy navigation and control over audio settings.

In terms of design, the Krell 222 showcases a modern aesthetic with a durable chassis that minimizes vibration and interference. The front panel is clean and intuitive, featuring a high-resolution display that provides real-time feedback on settings and parameters.

Notably, the Krell 222 embraces green technology, employing energy-efficient components that reduce power consumption without sacrificing performance. This commitment to sustainability reflects Krell's dedication to creating products that are both innovative and environmentally responsible.

In summary, Krell Industries 222 stands out with its advanced DAC, exceptional power supply, versatile connectivity options, and elegant design. It represents the pinnacle of what high-end audio can offer, making it an ideal choice for those who demand only the best in sound reproduction. With the Krell 222, users can experience music as it was meant to be heard, with clarity and depth that elevates the listening experience to new heights.
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