Krell Industries Evolution 222 Owner's Reference Manual
Krell evolution stereo preamplifier
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- Owner's reference manual (48 pages) ,
- Quick setup manual (4 pages)
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Summary of Contents for Krell Industries Evolution 222
- Page 1 EVOLUTION E V O L U T I O N 2 2 2 S T E R E O P R E A M P L I F I E R O W N E R ’ S R E F E R E N C E THE LEADER IN AUDIO ENGINEERING...
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Page 2: Important Safety Instructions
The Evolution 222 preamplifier must be placed on a firm, level surface where it is not exposed to dripping or splashing. -
Page 3: Table Of Contents
SECTION FOUR: Anatomy of the Evolution 222, page 15 Front Panel Description, Remote Control Description, Battery Installation, and Back Panel Description SECTION FIVE: Connecting the Evolution 222 to Your System, page 26 Input and Output Connections, Connection Steps SECTION SIX: Evolution 222 Operation, page 28... -
Page 4: List Of Illustrations
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
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. - Page 6 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.
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Page 7: Revolutionary Krell Cast Technology
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 entire CAST systems that reproduce music with incredible range, tonality, and precision. -
Page 8: Section One: Evolution 222 Features And Technology
CAST cable made. Evolution CAST By employing radical current mirror circuitry, the Evolution 222 components ele- vate the CAST technology to another level. This advanced use of the technology increases the linearity, transient speed, and bandwidth of the Evolution compo- nents while reducing the distortion by an order of magnitude. -
Page 9: Definition Of Terms
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 recording installations, balanced connections have 6 dB more gain than single-ended connections and allow the use of long interconnect cables. - Page 10 (SECTION ONE: Definition of Terms continued) 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.
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Page 11: Opening The Evolution 222 Shipping Carton
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. (56.6 cm) wide by 23.5 in. (59.7 cm) high by 16.2 in. (41.1 cm) deep. Preamplifier Chassis. - Page 12 This will facili- tate a clean, trouble-free installation. The Evolution 222 preamplifier does not require a special rack or cabinet for instal- lation. The preamplifier chassis measures 17.3 in. (43.8 cm) wide, 3.8 in. (9.7 cm) high, and 18.3 in.
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Page 13: Quick Start
SECTION 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 functions. -
Page 14: Section Three: Quick Start
(SECTION THREE: Quick Start) 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: Press the power button (1) on the front panel, or the remote control power key. - Page 15 FOUR SECTION Anatomy of the Evolution 222 This section describes the Evolution 222 Preamplifier functions. Figure 1 Evolution 222 Front Panel Power Power Button Stand-by/Power LED Infrared Emitter Remote Functions Infrared Sensor Front Panel Display Display Navigate/ Menu Button Customize...
- Page 16 Power 1 Power Button or Key Use this button or key to switch the Evolution 222 between the stand-by and operational modes. 7 Stand-by/Power LED The preamplifier LED illuminates red (stand-by) when the Evolution 222 is plugged into a standard AC wall receptacle.
- Page 17 Navigate/Customize 5 Menu Button or Key Use this button or key to access the menu functions of the Evolution 222. For more information, see 6 Enter Button or Key Use this button or key to configure the menu functions of the Evolution 222.
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Page 18: Level Control
(SECTION FOUR: Anatomy of an Evolution 222 continued) 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. - Page 19 Figure 2 Evolution 222 Remote Control Power Power Key Navigate/ Menu Key Customize Enter Key Input Single-ended Input Selectors Selection Keys Balanced Input Selection Keys CAST Input Selection Keys Tape Selection Key Mute Mute Key Phase Phase Key Level Level Keys...
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Page 20: Remote Control Description
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. - Page 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 key, to resume playing the track at the point when pause was engaged.
- Page 22 (SECTION FOUR: Anatomy of an Evolution 222 continued) Figure 3 Evolution 222 Back Panel Inputs Balanced Inputs: B-1, B-2 Single-ended Inputs: S-1, S-2, S-3 Tape Input CAST Inputs: C-1, C-2 Outputs Tape Output Main Outputs: Single-ended Main Output Balanced Main Output...
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Page 23: Back Panel Description
This single-ended analog output is used for recording the selected input source. 20 Main Outputs The Evolution 222 is equipped with one single-ended output with RCA con- nectors, one balanced output with XLR connectors, and two CAST preamplifi- er outputs with 4-pin bayonet connectors, for use with Krell CAST-equipped amplifiers. - Page 24 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.
- Page 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.
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Page 26: Connecting The Evolution 222 To Your System
XLR Pin Configuration Pin 1 Ground Pin 2 Non-inverting (0 Pin 3 Inverting (180 Inputs and outputs are located on the Evolution 222 back panel. Maintain the correct left/right orientation, when hooking up your system. -
Page 27: Connection Steps
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: Neatly arrange and organize wiring to and from the Evolution 222 preamplifier and all components. -
Page 28: On/Off And Stand-By Operation
When powering on any system, turn on amplifiers last. When powering down, turn off amplifiers first. After the Evolution 222 is connected to your system and to AC power, and the front panel display (3) has stopped scrolling, begin operation: Press the power button on the preamplifier front panel or the pwr key (1) on the remote control. -
Page 29: Navigation Conventions
SECTION 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:... -
Page 30: Ac Mains
(SECTION SEVEN: Customizing the Evolution 222 continued) Menu Functions AC Mains This function enables you to operate the Evolution 222 from a switched AC outlet. If AC Mains is set to 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 31: Balance (Channel)
Balance (channel) This function enables you to adjust the balance between the left and right output channels. The options are: Enter the menu, then: Use the level control knob on the preamplifier front panel or up and down keys (14) on the remote control to select: Press the enter button on the preamplifier front panel or the enter key (6) on the remote control Use the level control knob or the up and down keys to select the desired bal-... -
Page 32: Display
(SECTION SEVEN: Customizing the Evolution 222 continued) Display This function enables you to turn on the front panel display (3) all the time, or turn it off after a time out. The options are: Enter the menu, then: Use the level control knob on the preamplifier front panel or the up and down... -
Page 33: Info
EEPROM MAIN R Electrically erasable programmable read-only memory. An erasable memory chip POWER CONN POWER SUPP used in the Evolution 222 to store menu selection information. DIG CONN INFO. The front panel display (3) shows the software version num- continued... -
Page 34: Input Level Trim
(SECTION SEVEN: Customizing the Evolution 222 continued) Input Level Trim This function enables you to select an input offset for a particular input. The options are: Enter the menu, then: Use the level control knob on the preamplifier front panel or the up and down... -
Page 35: Input Phase
Input Phase This function enables you to invert the absolute polarity of the selected input 180 degrees. The selections are: Enter the menu, then: Use the level control knob on the preamplifier front panel or the up and down keys (14) on the remote control to select: Press the enter button on the preamplifier front panel or the enter key (6) on the remote control Use the level control knob or the up and down keys to select the desired input... -
Page 36: Ir Out Control
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 IR Out Control This function enables you to access Evolution 222 IR commands and program a learning remote control. -
Page 37: Link Control
Press the enter button or key to confirm the selection. The front panel display reads: MUTE. FULL The output of the Evolution 222 is completely silenced. -20dB The output of the Evolution 222 is reduced by 20 dB and may still be audible. LINK CONTROL. FULL, -20 dB, BACK. LINKED. MUTE. FULL... -
Page 38: Output Trigger
(SECTION SEVEN: Customizing the Evolution 222 continued) 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: OFF, DELAY. -
Page 39: Rc-5 Control
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: Use the level control knob on the preamplifier front panel or up and down keys... -
Page 40: Rs-232 Control
(SECTION SEVEN: Customizing the Evolution 222 continued) RS-232 Control This function enables you to change the link transmit status of the Evolution 222. The options are Enter the menu, then: Use the level control knob on the preamplifier front panel or up and down keys... -
Page 41: Theater Mode
Evolution 222. Note Only one input on the Evolution 222 can be in theater mode at a time. When theater mode is set for an input, theater mode is cleared automatically from other inputs. The Evolution 222 selects the theater input automatically upon power on, if the input trigger is configured for . -
Page 42: Volume Display
(SECTION SEVEN: Customizing the Evolution 222 continued) 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. -
Page 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 steps. -
Page 44: Warranty
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 and DVD players carry a limited warranty of five years for parts and labor on circuitry, and three years for parts and labor on mechanical parts. - Page 45 If the product is serviced by a distributor who did not import the unit, there may be a charge for service, even if the product is within the warranty period. Freight to the factory is your responsibility. Return freight within the United States (U.S.A.) is included in the warranty.
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Page 46: Return Authorization Procedure
Service Request Form in the Service Section of our website at: http://www.krellonline.com To contact the Krell Service Department E-MAIL WEBSITE Evolution 222 PRODUCT To return a product to Krell, please follow this procedure so that we may serve you better. Obtain a Return Authorization Number (R/A number) and shipping address from the Krell Service Department. -
Page 47: Specifications
Specifications Inputs 2 pr. CAST via 4-pin bayonet connectors 2 pr. balanced via XLR connectors 3 pr. single-ended via RCA connectors Tape input 1 pr. single-ended via RCA connector Main outputs 2 pr. CAST via 4-pin bayonet connectors 1 pr. balanced via XLR connector 1 pr. - Page 48 E V O L U T I O N 2 2 2 S T E R E O P R E A M P L I F I E R O W N E R ’ S R E F E R E N C E V 0 6 .