Page 2 - IMPORTANT SAFETY INSTRUCTIONS; Go to website
Evolution 222 Stereo Preamplifier Owner’s Reference, v 06.0 Krell Industries, Inc.45 Connair RoadOrange, CT 06477-3650 USA This product complies with the EMC directive (89/336/EEC) and the low-voltage directive(73/ 23/EEC). IMPORTANT SAFETY INSTRUCTIONS 1. Read Instructions. 2. Keep these Instructio...
Page 3 - Contents
3 Contents List of Illustrations, page 4 A Letter from Dan D’Agostino, page 5 SECTION ONE: Evolution 222 Features and Technology, page 6 Features, Revolutionary Krell CAST Technology, Definition of Terms SECTION TWO: Unpacking and Placement, page 11 Opening the Evolution 222 Shipping Carton SECTION ...
Page 4 - List of Illustrations
4 List of Illustrations Figure 1, page 15 Evolution 222 Preamplifier Front Panel Figure 2, page 19 Evolution 222 Remote Control Figure 3, page 22 Evolution 222 Preamplifier Back Panel
Page 5 - A Letter from Dan D’Agostino
5 A Letter from Dan D’Agostino Dear Audio Enthusiast, Thank you for your purchase of the Krell Evolution 222 preamplifier. The preamplifier plays a vital role in audio playback by mediating the line-level out- put of a wide variety of source components in preparation for the amplifier’s input. At no...
Page 6 - ONE; Evolution 222 Features and Technology; Features
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 Kr...
Page 7 - Revolutionary Krell CAST Technology; CAST Basics
7 Revolutionary Krell CAST Technology Current Audio Signal Transmission, termed CAST, is a revolutionary method of connecting analog audio components for unparalleled sonic performance. Innovative engineering combines the new Krell CAST circuitry with existing Krell Current Mode technology to create...
Page 8 - CAST Cable Construction; Evolution CAST; The Best Musical Performance
8 Krell Current Mode maintains the integrity of the signal within the component and CAST preserves the transmitted signal between components. Together, CAST and Krell Current Mode technologies unify separate Krell components into a single global circuit. Krell Current Mode technology enjoys bandwidt...
Page 9 - Definition of Terms; Inputs and Outputs
9 Definition of Terms The following are definitions of key terms used in this owner’s reference: Inputs and Outputs Balanced A symmetrical input or output circuit that has equal impedance from both input terminals to a common ground reference point. The industry standard for profes- sional and sound...
Page 10 - Technology
10 Technology Krell Current Mode A proprietary Krell circuit topology in which the audio gain stages of a component operate in the current rather than voltage domain. This unique technology provides the component with exceptional speed, and a wide bandwidth. ( SECTION ONE: Definition of Terms contin...
Page 11 - Unpacking and Placement; Opening the Evolution 222 Shipping Carton; To Remove the Preamplifier from the Shipping Carton; TWO
11 Unpacking and Placement This section describes the procedures for safely unpacking and placing your Evolution 222 preamplifier. The Evolution 222 preamplifier and accessories are shipped in 1 carton. Opening the Evolution 222 Shipping Carton The Evolution 222 shipping carton measures 22.3 in. (56...
Page 12 - Placement; AC Power Guidelines
12 Placement Before you install an Evolution 222 preamplifier into your system, please follow the guidelines in this section to select a location for your component. This will facili- tate a clean, trouble-free installation. The Evolution 222 preamplifier does not require a special rack or cabinet f...
Page 13 - THREE; Quick Start; Connecting the Evolution 222 to Your System
13 continued SECTION THREE Quick Start To access the full array of available functions for the Evolution 222, please read this entire owner’s reference manual. The abbreviated routine in this Quick Start section will allow you to connect and operate the Evolution 222 quickly and enjoy its basic func...
Page 14 - Operating the Evolution 222
14 Operating the Evolution 222 After the Evolution 222 is connected to your system and to AC power, and the front panel display has stopped scrolling, begin operation: 1. Press the power button (1) on the front panel, or the remote control power key. The standby/power LED turns blue. The display sho...
Page 15 - FOUR; Anatomy of the Evolution 222
15 SECTION FOUR Anatomy of the Evolution 222 This section describes the Evolution 222 Preamplifier functions. Figure 1 Evolution 222 Front Panel 1 Power Button 7 Stand-by/Power LED 2 Infrared Emitter 4 Infrared Sensor 3 Front Panel Display 5 Menu Button 6 Enter Button 8 Single-ended Input Selection ...
Page 16 - Front Panel Description; Chassis; Remote Functions on the Front Panel
16 Front Panel Description See Figure 1 on the previous page The Evolution 222 preamplifier front panel functions are described below: Chassis Preamplifier Chassis The preamplifier front panel provides power on, input and zone selection, level control, menu functions, and status display. Power 1 Pow...
Page 17 - Preamplifier Functions
17 Display 3 Front Panel Display The front panel display provides preamplifier channel status messages, includ- ing input status, tape output status, volume level, balance offset, and menu selections. Navigate/Customize 5 Menu Button or Key Use this button or key to access the menu functions of the ...
Page 18 - Level Control
18 Level Control 14 Level Control Knob or Level Keys Use this knob or keys to increase or decrease system volume level or, with the balance key (C), to adjust balance. The level control knob or keys also select menu options that customize the Evolution 222. See Customizing the Evolution 222, on page...
Page 20 - Remote Control Description; Battery Installation and Removal; Amplifier Functions; Balance Functions
20 Remote Control Description See Figure 2 on the previous page The Evolution 222 remote provides the same power, preamplifier, level control, and navigate/customize functions as the preamplifier’s front panel. In addition, the remote has CD and DVD functions, and menu configuration functions. Keys ...
Page 21 - Compact Disc and DVD Functions
21 Compact Disc and DVD Functions The compact disc and DVD dual-purpose keys of the remote control are function- al with all Krell compact disc and DVD players. D Transport Keys: Pause Key Use this key to temporarily suspend playing the current compact disc track. Press pause again or press the play...
Page 23 - Back Panel Description; Inputs; Outputs; Configurations
23 Back Panel Description See Figure 3 on the previous page The preamplifier back panel provides all input and output connections, remote control inputs and outputs, and the power connection. Back panel features and their descriptions follow. Inputs 15 Balanced Inputs: B-1, B-2 These are balanced an...
Page 24 - Remote Connections on the Back Panel
24 Remote Connections on the Back Panel 22 RS-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...
Page 25 - Phono Stage Connector
25 Phono Stage Connector 25 Phono Power Port This port is used for connecting the preamplifier to a Krell KPE phono stage. Power 26 IEC Power Cord Receptacle The IEC power connector is for use with the provided IEC standard 15 amp AC power cord.
Page 26 - FIVE; Input and Output Connections; XLR Pin Configuration
26 SECTION FIVE Connecting the Evolution 222 to Your System This section describes Evolution 222 preamplifier connections. Input and Output Connections Krell recommends using its proprietary Krell CAST system for unparalleled sonic performance for connections between the Evolution 222 preamplifier a...
Page 27 - Connection Steps
27 Connection Steps Position the preamplifier where you intend to use it in your system. The following steps describe how to connect an Evolution 222 preamplifier to your system: 1. Neatly arrange and organize wiring to and from the Evolution 222 preamplifier and all components. Separate AC wires fr...
Page 28 - Evolution 222 Operation; To Turn Off The System; SIX
28 Evolution 222 Operation The Evolution 222 preamplifier is easy to operate. Instructions follow for on/off and stand-by operation. IMPORTANT Always mute or fully attenuate the preamplifier level when switching sources. Do not change input connections to the amplifier when the amplifier is on. Use ...
Page 29 - Customizing the Evolution 222; Navigation Conventions; SEVEN
29 Customizing the Evolution 222 The Evolution 222 preamplifier easy-to-use menu allows you to configure the fol- lowing functions. You can also use the menu to review version information about the software, hardware, and firmware installed in the Evolution 222: AC Mains, page 30 Input Phase, page 3...
Page 30 - Menu Functions; AC Mains
30 Menu Functions AC Mains This function enables you to operate the Evolution 222 from a switched AC outlet. If AC Mains is set to ON, the preamplifier turns on immediately, by-passing stand- by. Thereafter, you may switch the preamplifier to and from stand-by, using the power button or pwr key (1)....
Page 33 - Info
33 continued Info This function enables you to access information about the preamplifier software, EEPROM, and PC Boards. The PC Boards are listed in the left margin, on this page. Enter the menu, then: 1. Use the level control knob on the preamplifier front panel or up and down keys (14) on the rem...
Page 35 - Input Phase; Input Trigger
35 Input Phase This function enables you to invert the absolute polarity of the selected input 180 degrees. The selections are: NORMAL, INVERT. Enter the menu, then: 1. Use the level control knob on the preamplifier front panel or the up and down keys (14) on the remote control to select: INPUT PHAS...
Page 36 - IR Out Control
36 (Input Trigger continued ) OFF The Evolution 222 does not respond to 12 V input trigger commands. NORMAL The Evolution 222 responds to 12 V input trigger commands. THEATER The Evolution 222 responds to 12 V input trigger commands, and the theater mode enabled input is selected automatically. See ...
Page 37 - Mute
37 Link Control (CAN Link) This function enables you to link and unlink CAN Link-enabled Krell products. The options are: LINKED, UNLINKED. Enter the menu, then: 1. Use the level control knob on the preamplifier front panel or the up and down keys (14) on the remote control to select: LINK CONTROL. ...
Page 38 - Output Trigger
38 Output Trigger This function enables you to turn the two 12 Volt output triggers (24) on or off, or configure them with independent delays of up to 20 seconds. The options are: ON, OFF, DELAY. Enter the menu, then: 1. Use the level control knob on the preamplifier front panel or up and down keys ...
Page 39 - Recall
39 RC-5 Control This function enables you to change the link transmit status of the Evolution 222. The options are: LINK TRANSMIT, LINK RECEIVE. Enter the menu, then: 1. Use the level control knob on the preamplifier front panel or up and down keys (14) on the remote control to select: RC-5 CONTROL....
Page 40 - Save
40 RS-232 Control This function enables you to change the link transmit status of the Evolution 222. The options are LINK TRANSMIT, LINK RECEIVE. Enter the menu, then: 1. Use the level control knob on the preamplifier front panel or up and down keys (14) on the remote control to select: RS-232 CONTR...
Page 41 - Theater Mode
41 Theater Mode This function enables you to select theater mode volume for a particular input. Use this function when connecting the output of a preamp/processor to the Evolution 222 for home theater applications. Configuring an input for theater mode sets that input for unity gain, and suspends th...
Page 42 - Volume Display
42 Volume Display This function enables you to select the numeric mode for the volume display, dis- playing values from softest to loudest: 0 to 151. Alternatively, you can select the dB mode for the volume display, displaying values from softest to loudest: -inf to +12 dB. The options are: NUMERIC,...
Page 43 - Troubleshooting System Noise; EIGHT
43 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 Evolution 222 preamplifier into your system, follow these simple troubleshooting...
Page 44 - Warranty
44 Warranty Krell products have a limited warranty. Amplifiers, preamplifiers, preamp/processors,and receivers carry a limited warranty of five years for parts and labor on circuitry.Loudspeakers carry a limited warranty of five years for parts and labor. CD andDVD players carry a limited warranty o...
Page 46 - Return Authorization Procedure
46 Return Authorization Procedure If you believe there is a problem with your component, please contact your dealer, distributor, or the Krell factory to discuss the problem before you return the com- ponent for repair. To expedite service, you may wish to complete and e-mail the Service Request For...
Page 47 - Specifications
47 Inputs 2 pr. CAST via 4-pin bayonet connectors2 pr. balanced via XLR connectors3 pr. single-ended via RCA connectors Tape input 1 pr. single-ended via RCA connector Main outputs 2 pr. CAST via 4-pin bayonet connectors1 pr. balanced via XLR connector1 pr. single-ended via RCA connector Tape output...
