Krell Industries 202 manuale d’uso

OWNER’S REFERENCE EVOLUTION EVOLUTION 202 STEREO PREAMPLIFIER THE LEADER IN AUDIO ENGINEERING OWNER’S REFERENCE EVOLUTION EVOLUTION 202 STEREO PREAMPLIFIER THE LEADER IN AUDIO ENGINEERING[...]

Evolution 202 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 202 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 202 Shipping Carton SECTION THREE: Quick Start, page 13 Connecting th[...]

4 List of Illustrations Figure 1, page 1 5 Evolution 202 Preamplifier and Power Supply Front Panels Inset Preamplifier and Power Supply Stacked View Figure 2, page 1 9 Evolution 202 Remote Control Figure 3, page 22 Evolution 202 Preamplifier and Power Supply Back Panels[...]

5 A Letter fr om Dan D’Agostino Dear Audio Enthusiast, Thank you for your purchase of the Kr ell Evolution 202 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 202 Featur es and T echnology This section describes the innovative features and technology of the Evolution 202 preamplifier , and defines CAST and other key terms used in this r eference. The Evolution 202 Stereo Pr eamplifier , evolving from the flagship Evolution T wo, works to carefully transmit audio signals without da[...]

7 In stand-by mode, all the analog circuitry continues to operate at the same bias current; however , the main analog supply voltages decrease by 30 percent. The result is a corr esponding 30 percent r eduction in power consumption and heat without the need to wait for the electronics to “warm up” befor e listening. Revolutionary Kr ell CAST T [...]

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 202 Preamplifier . The Evolution 202 preamplifier is shipped in 1 carton consisting of 2 chassis: 1 power supply chassis and 1 preamplifier chassis. Opening the Evolution 202 Shipping Carton The Evolution 202 shipping carton measures 22[...]

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13 continue d SECTION THREE Quick Start T o access the full array of available functions for the Evolution 202, 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 202 quickly and enjoy its basic functions. The front and r ear panels are shown[...]

14 Operating the Evolution 202 After the Evolution 202 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 202 This section describes the Evolution 202 Preamplifier functions. Figure 1 Evolution 202 Preamplifier and Power Supply Fr ont Panels 1 Power Button 7 Stand-by/Power LED 2 Infrared Emitter 4 Infrared Sensor 3 Fr ont Panel Display 5 Menu Button 6 Enter Button 8 Single-ended Input Selection Buttons 9 Balance[...]

16 Fr ont Panel Description See Figure 1 on the previous page The Evolution 202 Preamplifier is comprised of two chassis: the pr eamplifier chassis and the power supply chassis. Front panel functions ar e described below: Chassis Preamplifier Chassis The preamplifier fr ont panel provides power on, input and zone selection, level control, menu func[...]

17 Pr eamplifier Functions 8, 9, 10 Input Select Buttons or Keys Use these buttons to select the corresponding r ear panel input that is connect- ed to a CAST (C-1, C-2), balanced (B-1, B-2), or single-ended (S-1, S-2, S-3) analog source. The fr ont panel display shows the selected input and volume level. 11 T ape Button and LED, or Key Use this bu[...]

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 202. See Customizing the Evolution 202, on page 29. Navigate/Customize 5 Menu Button or Key Us[...]

19 Figure 2 Evolution 202 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 202 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 Balance Functions C Bal(ance) Keys Use these with the level keys (14) to adjust the left and right channel balance. 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. H CD Key Use this to activate CD functions. I DVD Key Use this to activa[...]

22 Figure 3 Evolution 202 Preamplifier and Power Supply Back Panels 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 DC Power Connector 25 12 VDC In/Out[...]

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 202 developer's ref- erence, entitled RS-232 Port: Sending Commands and Interpreting [...]

25 Phono Stage Connector 28 Phono Power Port This port is used for connecting the preamplifier to a Kr ell KPE phono stage. Power 24 DC Power Connector This is used to connect the preamplifier chassis and the power supply chassis, using the provided 12-pin DC power cable. 26 Analog and Digital Power Supply Fuses Always unplug the power cord befor e[...]

26 SECTION FIVE Connecting the Evolution 202 to Y our System This section describes Evolution 202 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 202 preamplifier and other CAST -equipped components. Krell CAST [...]

27 Connection Steps Position the power supply and preamplifier wher e you intend to use them in your system. Do not move the connected chassis after they are assembled. The following steps describe how to connect an Evolution 202 preamplifier to your system: 1. Connect the power supply chassis and preamplifier chassis with the 12-pin DC cable provi[...]

28 Evolution 202 Operation The Evolution 202 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 202 The Evolution 202 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 202: 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 202 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 202 does not respond to 12 V input trigger commands. NORMAL The Evolution 202 responds to 12 V input trigger commands. THEA TER The Evolution 202 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 (25) 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 202. 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 202. The options are LINK TRANSMIT , LINK RECEIVE. Enter the menu, then: 1. Use the level control knob on the pr eamplifier channel 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[...]

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 202 for home theater applications. Configuring an input for theater mode sets that input for unity gain and suspends the level control of the Evolution 202. V olume adju[...]

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 r oubleshooting 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 202 preamplifier into your system, follow these simple troubleshooting steps. 1. Check that all input and output conn[...]

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 202 S TEREO PREAMPLIFIER[...]