Instruction/ maintenance manual of the product 222 Krell Industries
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OWNER’S REFERENCE EVOLUTION EVOLUTION 222 STEREO PREAMPLIFIER THE LEADER IN AUDIO ENGINEERING.
Evolution 222 Stereo Pr eamplifier Owner’ s Reference, v 06.0 Krell Industries, Inc. 45 Connair Road Orange, CT 06477 -3650 USA This product complies with the EMC dir ective (89/ 336 / EEC) and the low-voltage dir ective (73/ 23/ EEC). IMPOR T ANT SAFETY INSTRUCTIONS 1.
3 Contents List of Illustrations, page 4 A Letter from Dan D’Agostino, page 5 SECTION ONE: Evolution 222 Features and T echnology , page 6 Featur es, Revolutionar y Krell CAST T echnology , Definiti.
4 List of Illustrations Figure 1, page 1 5 Evolution 222 Preamplifier Front Panel Figure 2, page 1 9 Evolution 222 Remote Control Figure 3, page 22 Evolution 222 Preamplifier Back Panel.
5 A Letter fr om Dan D’Agostino Dear Audio Enthusiast, Thank you for your purchase of the Kr ell Evolution 222 preamplifier . The preamplifier plays a vital r ole in audio playback by mediating the line-level out- put of a wide variety of source components in pr eparation for the amplifier’ s input.
6 SECTION ONE Evolution 222 Featur es and T echnology This section describes the innovative features and technology of the Evolution 222 preamplifier , and defines CAST and other key terms used in this r eference.
7 Revolutionary Kr ell CAST T echnology Current Audio Signal T ransmission, termed CAST , is a revolutionary method of connecting analog audio components for unparalleled sonic performance.
8 Krell Curr ent Mode maintains the integrity of the signal within the component and CAST preserves the transmitted signal between components. T ogether , CAST and Krell Curr ent Mode technologies unify separate Krell components into a single global circuit.
9 Definition of T erms The following are definitions of key terms used in this owner’ s refer ence: Inputs and Outputs Balanced A symmetrical input or output circuit that has equal impedance fr om both input terminals to a common ground r eference point.
10 T echnology Krell Curr ent Mode A proprietary Kr ell circuit topology in which the audio gain stages of a component operate in the current rather than voltage domain. This unique technology pr ovides the component with exceptional speed, and a wide bandwidth.
11 Unpacking and Placement This section describes the procedur es 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.
12 Placement Before you install an Evolution 222 pr eamplifier into your system, please follow the guidelines in this section to select a location for your component. This will facili- tate a clean, trouble-fr ee installation. The Evolution 222 preamplifier does not r equire a special rack or cabinet for instal- lation.
13 continue d SECTION THREE Quick Start T o access the full array of available functions for the Evolution 222, please read this entire owner’ s refer ence manual. The abbreviated r outine in this Quick Start section will allow you to connect and operate the Evolution 222 quickly and enjoy its basic functions.
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 scr olling, begin operation: 1. Press the power button (1) on the fr ont panel, or the remote contr ol power key .
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 .
16 Fr ont Panel Description See Figure 1 on the previous page The Evolution 222 preamplifier fr ont panel functions are described below: Chassis Preamplifier Chassis The preamplifier fr ont panel provides power on, input and zone selection, level control, menu functions, and status display .
17 Display 3 Front Panel Display The front panel display pr ovides 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 Evolution 222.
18 Level Contr ol 14 Level Control Knob or Level Keys Use this knob or keys to increase or decr ease 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.
19 Figure 2 Evolution 222 Remote Control 1 Power Key 5 Menu Key 6 Enter Key 8 Single-ended Input Selection Keys 9 Balanced Input Selection Keys 10 CAST Input Selection Keys 11 T ape Selection Key 12 M.
20 Remote Contr ol Description See Figure 2 on the previous page The Evolution 222 remote pr ovides 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.
21 Compact Disc and DVD Functions The compact disc and DVD dual-purpose keys of the remote contr ol are function- al with all Krell compact disc and DVD players. D T ransport Keys: Pause Key Use this key to temporarily suspend playing the current compact disc track.
22 Figure 3 Evolution 222 Back Panel 15 Balanced Inputs: B-1, B-2 16 Single-ended Inputs: S-1, S-2, S-3 17 T ape Input 18 CAST Inputs: C-1, C-2 19 T ape Output 20 Main Outputs: Single-ended Main Outpu.
23 Back Panel Description See Figure 3 on the previous page The preamplifier back panel pr ovides all input and output connections, remote control inputs and outputs, and the power connection. Back panel featur es and their descriptions follow . Inputs 15 Balanced Inputs: B-1, B-2 These are balanced analog sour ce inputs with XLR connectors.
24 Remote Connections on the Back Panel 22 RS-232 The RS-232 port receives messages fr om a computer -based control system, providing integrated contr ol of all preamplifier functions.
25 Phono Stage Connector 25 Phono Power Port This port is used for connecting the preamplifier to a Kr ell KPE phono stage. Power 26 IEC Power Cord Receptacle The IEC power connector is for use with the provided IEC standar d 15 amp AC power cord.
26 SECTION FIVE Connecting the Evolution 222 to Y our System This section describes Evolution 222 preamplifier connections. Input and Output Connections Krell r ecommends using its proprietary Kr ell CAST system for unparalleled sonic performance for connections between the Evolution 222 preamplifier and other CAST -equipped components.
27 Connection Steps Position the preamplifier wher e 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 or ganize wiring to and from the Evolution 222 pr eamplifier and all components.
28 Evolution 222 Operation The Evolution 222 preamplifier is easy to operate. Instructions follow for on/of f and stand-by operation. IMPORT ANT Always mute or fully attenuate the preamplifier level when switching sources. Do not change input connections to the amplifier when the amplifier is on.
29 Customizing the Evolution 222 The Evolution 222 preamplifier easy-to-use menu allows you to configur e the fol- lowing functions. Y ou can also use the menu to review version information about the .
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 fr om stand-by , using the power button or pwr key (1).
31 Balance (channel) This function enables you to adjust the balance between the left and right output channels. The options are: CENTER, L .5-5 dB <, R .5-5 dB >. Enter the menu, then: 1. Use the level control knob on the pr eamplifier front panel or up and down keys (14) on the remote contr ol to select: BALANCE.
32 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 ar e: ON , TIMED. Enter the menu, then: 1. Use the level control knob on the pr eamplifier front panel or the up and down keys on the remote contr ol (14) to select: DISPLA Y .
33 continue d Info This function enables you to access information about the preamplifier softwar e, EEPROM, and PC Boards. The PC Boar ds are listed in the left mar gin, on this page. Enter the menu, then: 1. Use the level control knob on the pr eamplifier front panel or up and down keys (14) on the remote contr ol to select: INFO.
34 Input Level T rim This function enables you to select an input offset for a particular input. The options are: +/-6 dB, in 1 dB increments . Enter the menu, then: 1. Use the level control knob on the pr eamplifier front panel or the up and down keys (14) on the remote contr ol to select: INPUT LEVEL TRIM.
35 Input Phase This function enables you to invert the absolute polarity of the selected input 180 degrees. The selections ar e: NORMAL, INVERT . Enter the menu, then: 1. Use the level control knob on the pr eamplifier front panel or the up and down keys (14) on the remote contr ol to select: INPUT PHASE.
36 ( Input T rigger 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. THEA TER The Evolution 222 responds to 12 V input trigger commands, and the theater mode enabled input is selected automatically .
37 Link Control (CAN Link) This function enables you to link and unlink CAN Link-enabled Krell pr oducts. The options are: LINKED, UNLINKED. Enter the menu, then: 1. Use the level control knob on the pr eamplifier front panel or the up and down keys (14) on the remote contr ol to select: LINK CONTROL.
38 Output T rigger This function enables you to turn the two 12 V olt output triggers (24) on or off, or configure them with independent delays of up to 20 seconds.
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 pr eamplifier front panel or up and down keys (14) on the remote contr ol to select: RC-5 CONTROL.
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 pr eamplifier front panel or up and down keys (14) on the remote contr ol to select: RS-232 CONTROL.
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/pr ocessor to the Evolution 222 for home theater applications. Configuring an input for theater mode sets that input for unity gain, and suspends the level control of the Evolution 222.
42 V olume 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.
43 T roubleshooting System Noise When you mix and match high-performance audio components, each with its own ground potential, a low fr equency 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.
44 W arranty Krell pr oducts have a limited warran ty . Amplifiers, preamplifiers, pr eamp/processors, and receivers carry a limited warranty of five years for parts and labor on cir cuitry . Loudspeakers carry a limited warranty of five years for parts and labor .
45 If the product is serviced by a distributor who did not import the unit, ther e may be a char ge for service, even if the product is within the warranty period. Freight to the factory is your r esponsibility . Retur n fr eight within the United States (U.
46 Retur n Authorization Pr ocedur e If you believe there is a pr oblem with your component, please contact your dealer , distributor , or the Krell factory to discuss the pr oblem before you r eturn the com- ponent for repair .
47 Inputs 2 pr . CAST via 4-pin bayonet connectors 2 pr . balanced via XLR connectors 3 pr . single-ended via RCA connectors T ape 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 .
O WNER’S REFERENCE V06.0 KRELL INDUSTRIES, INC. 45 CONNAIR ROAD ORANGE, CT 06477-3650 USA TEL: 203-298-4000 • F AX: 203-891-2028 E-MAIL: sales@krellonline.
An important point after buying a device Krell Industries 222 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Krell Industries 222 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Krell Industries 222 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Krell Industries 222 you will learn all the available features of the product, as well as information on its operation. The information that you get Krell Industries 222 will certainly help you make a decision on the purchase.
If you already are a holder of Krell Industries 222, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Krell Industries 222.
However, one of the most important roles played by the user manual is to help in solving problems with Krell Industries 222. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Krell Industries 222 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
