Krell Industries 222 manuale d’uso

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. Read Instructions. 2. Keep these Instructions. 3. Heed all Warnings. 4. Follo[...]

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 , Definition of T erms SECTION TWO: Unpacking and Placement, page 11 Opening the Evolution 222 Shipping Carton SECTION THREE: Quick Start, page 13 Connecting th[...]

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. At no other point in the r epr oduction proce[...]

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. Featur es The Evolution 222 has an open loop bandwidth that exceeds 1 MHz and a balanced Krell Curr ent Mode design, terminating in Evol[...]

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. Innovative engineering combines the new Krell CAST cir cuitry with existing Krell Current Mode technology to cr eate entire CAST systems that r epr oduce music [...]

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. Krell Curr ent Mode technology enjoys bandwidth increases up to an order of magnitude gr ea[...]

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. The industry standar d for pr ofes- sional and sound recor ding installations, balanced conne[...]

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. ( SECTION ONE: Definition of T erms continued )[...]

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 22.3 in. (56.6 cm) wide by 23.5 in. (59.7 cm) high by 16.2 i[...]

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. The preamplifier chassis mea[...]

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. The front and r ear panels are shown[...]

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 . The standby/power LED turns blue. The display shows the factory default input: S-1 , and level[...]

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 Buttons 9 Balanced Input Selection Buttons 10 CAST[...]

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 . Power 1 Power Button or Key Use this button or key to swi[...]

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. For more information, see Customiz[...]

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. See Customizing the Evolution 222, on page 29. ( SECTION FOUR: Anatomy of an Evolution 22[...]

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 Mute Key 13 Phase Key 14 Level Keys A Amp Pwr Key B Amp Sel Key C Bal(ance) Keys D T ransport Keys E Menu Key F Direction Keys G Select Key H CD Key I [...]

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. Keys Labled 1 to 14 These remote keys have the s[...]

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. Press pause again or pr ess the play key , to resume playing the track at the point[...]

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 Output Balanced Main Output CAST Outputs 21 CAN Link In/Out 22 RS-232 Port 23 RC-5 In 24 12 VDC In/Out 25 Phono Power Port 26 IEC Power Cord Receptacle ( S[...]

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. 16 Sin[...]

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. 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 [...]

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. Krell CAST [...]

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. Separate AC wires fr om audio cables to prevent hum or other unwant[...]

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. Use care when setting high playback levels. Always l[...]

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 software, har dware, and firmwar e installed in the Evolution 222: AC Mains, page 30 Input Phase, page 35 Recall, page 39 Balance (channel) page 31 In[...]

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). The options are: OFF , ON. Enter the menu, t[...]

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. 2. Press the enter button o[...]

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 . 2. Press the enter button on the pr ea[...]

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. 2. Press the en[...]

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. 2. Press the enter button on the pr eamp[...]

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. 2. Press the enter button on the pr eamplif[...]

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 . See Theater Mode, on page 41. IR Out Control This [...]

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. 2. Press the enter button on the pr eamplifier [...]

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. The options ar e: ON, OFF , DELA Y . 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: OUTP[...]

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. 2. Press the enter button on the pr eamplifier[...]

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. 2. Press the enter button on the pr eamplif[...]

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. V olume adj[...]

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. The options are: NUMERIC, dB. Enter the menu, then: 1. Use the level co[...]

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. 1. Check that all input and output conne[...]

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 . CD and DVD players carry a limited warranty of five years for parts and labor on cir[...]

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.S.A.) is included in the warranty . If you have purchased your Krell pr oduct out- side the [...]

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 . T o expedite service, you may wish to complete and e-mail the Service Request Form in the Service Section of our website [...]

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 . single-ended via RCA connector T ape outputs 1 pr . single-ended via RCA connect[...]

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.com http://www .krellonline.com E VOLUTION 222 S TEREO PREAMPLIFIER[...]