Krell 202 - Manuals

5 A Letter from Dan D’Agostino Dear Audio Enthusiast, Thank you for your purchase of the Krell Evolution 202 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...

6 SECTION ONE Evolution 202 Features and Technology This section describes the innovative features and technology of the Evolution 202 preamplifier, and defines CAST and other key terms used in this reference. The Evolution 202 Stereo Preamplifier, evolving from the flagship Evolution Two, works to ...

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 corresponding 30 percent reduction in power consumption and heat without the need to wait for the electronics to “warm up” befo...

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...

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...

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...

11 Unpacking and Placement This section describes the procedures 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 Cart...

13 continued SECTION THREE Quick Start To access the full array of available functions for the Evolution 202, 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 202 quickly and enjoy its basic func...

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 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...

15 SECTION FOUR Anatomy of the Evolution 202 This section describes the Evolution 202 Preamplifier functions. Figure 1 Evolution 202 Preamplifier and Power Supply Front Panels 1 Power Button 7 Stand-by/Power LED 2 Infrared Emitter 4 Infrared Sensor 3 Front Panel Display 5 Menu Button 6 Enter Button ...

16 Front Panel Description See Figure 1 on the previous page The Evolution 202 Preamplifier is comprised of two chassis: the preamplifier chassis and the power supply chassis. Front panel functions are described below: Chassis Preamplifier Chassis The preamplifier front panel provides power on, inpu...

17 Preamplifier Functions 8, 9, 10 Input Select Buttons or Keys Use these buttons to select the corresponding rear 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 front panel display shows the selected input and volume lev...

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 202. See Customizing the Evolution 202, on page...

20 Remote Control Description See Figure 2 on the previous page The Evolution 202 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 ...

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...

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 202 developer's ref- erence, entitled RS-232...

25 Phono Stage Connector 28 Phono Power Port This port is used for connecting the preamplifier to a Krell 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 ...

26 SECTION FIVE Connecting the Evolution 202 to Your System This section describes Evolution 202 Preamplifier connections. Input and Output Connections Krell recommends using its proprietary Krell CAST system for unparalleled sonic performance for connections between the Evolution 202 preamplifier a...

27 Connection Steps Position the power supply and preamplifier where 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 pr...

28 Evolution 202 Operation The Evolution 202 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 ...

29 Customizing the Evolution 202 The Evolution 202 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 202: AC Mains, page 30 Input Phase, page 3...

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 from stand-by, using the power button or pwr key (1)....

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...

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...

36 (Input Trigger 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. THEATER The Evolution 202 responds to 12 V input trigger commands, and the theater mode enabled input is selected automatically. See ...

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. ...

38 Output Trigger This function enables you to turn the two 12 Volt output triggers (25) 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 ...

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 preamplifier front panel or up and down keys (14) on the remote control to select: RC-5 CONTROL....

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 preamplifier channel front panel or up and down keys (14) on the remote control to select: RS-2...

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 202 for home theater applications. Configuring an input for theater mode sets that input for unity gain and suspends the...

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,...

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 202 preamplifier into your system, follow these simple troubleshooting...

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...

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...

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...