Krell Industries 202 Stereo Amplifier User Manual
Contents
1. KRELL EVGLUTISN 202 KRELI PHONG POWER Inputs 15 Balanced Inputs B 1 B 2 16 Single ended Inputs S 1 S 2 S 3 17 Tape Input 18 CAST Inputs C 1 C 2 Outputs 19 Tape Output 20 Main Outputs Single ended Main Output Balanced Main Output CAST Outputs Configurations 21 CAN Link In Out Remote 22 RS 232 Port 23 RC 5 In Power 24 DC Power Connector 25 12 VDC In Out 26 Analog and Digital Supply Fuses 27 IEC Power Cord Receptacle Phono 28 Phono Power Port 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 analog source inputs with XLR connectors 16 Single ended Inputs S 1 S 2 S 3 These are single ended analog source inputs with RCA connectors 17 Tape Input This is a single ended tape input for use with a tape source 18 C 1 and C 2 CAST Inputs These are CAST inputs with 4 pin bayonet connectors for use with Krell CAST equipped input devices Outputs 19 Tape Output This single ended analog output is used for recording the selected input source 20 Main Outputs The Evolution 202 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 conn2. 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 29 Navigate Customize 5 Menu Button or Key Use this button or key to access the menu functions of the Evolution 202 For more information see Customizing the Evolution 202 on page 29 6 Enter Button or Key Use this button or key to configure the menu functions of the Evolution 202 For more information see Customizing the Evolution 202 on page 29 Figure 2 Evolution 202 Remote Control Power Navigate Customize Input Selectors Mute Phase Level Amplifier Functions Balance CD and DVD Functions OD WU Ko _zOnmmouoork Power Key Menu Key Enter Key Single ended Input Selection Keys Balanced Input Selection Keys CAST Input Selection Keys Tape Selection Key Mute Key Phase Key Level Keys Amp Pwr Key Amp Sel Key Bal ance Keys Transport Keys Menu Key Direction Keys Select Key CD Key DVD Key Title Key Aa O RSRE LE continued SECTION FOUR Anatomy of an Evolution 202 continued Remote Control Description See Figure 2 on the previous page The Evolution 202 remote provides the same power preamplifier level control an
3. refers to a remote control operation Connecting the Evolution 202 to Your System Position the preamplifier and power supply where you intend to use them in your system Do not move the chassis after they are connected Connect the power supply chassis and the preamplifier chassis with the 12 pin DC cable provided using the back panel DC power connectors 24 Neatly arrange and organize wiring to and from the preamplifier and all compo nents Separate the AC wires from any audio cables to prevent hum or other unwanted noise from being introduced into the system Connect the outputs of your source equipment to the appropriate CAST 18 balanced 15 single ended 16 or tape inputs 17 on the Evolution 202 Connect the main outputs 20 on the Evolution 202 to your amplifier s inputs Connect the supplied AC power cord to the IEC power cord receptacle 27 of the power supply unit Plug the other end of the AC power cord into AC power The display 3 scrolls through EVOLUTION 202 SOFTWARE VERSION and the stand by power LEDs 7 illu minate red indicating that the Evolution 202 is in stand by mode When the scrolling stops the Evolution 202 is ready to be powered on Note Use only the power cord provided with the preamplifier to make the connection to AC power Operation with a power cord other than the one supplied by Krell could induce noise limit current or otherwise impair the ability of the preamplifier to
4. 4 mA RMS Signal to noise ratio 4 V RMS balanced or 4 mA RMS CAST output Wideband unweighted gt 100 dB A weighted gt 109 dB Power consumption Standby 45 W Power on 70 W Power on with KPE 80 W Dimensions Preamplifier only 17 3 in W x 3 8 in H x 18 3 in D 43 8 cm W x 9 7 cm H x 46 4 cm D Power supply only 17 3 in W x 3 8 in H x 17 7 in D 43 8 cm W x 9 7 cmH x 44 8 cm D Preamplifier and power supply 17 3 in W x 7 6 in H x 18 3 in D 43 8 cm W x 19 2 cmH x 46 4 cm D Weight Shipped 61 Ibs 27 6 kg Preamplifier only 18 Ibs 8 1 kg Power supply only 28 Ibs 12 7 kg ER S REFER voe6 0
5. Krell strives for the delivery of the best performance of a musical event for you using the full expres sion of technology to date 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 Balanced connections are completely immune to induced noise from the system or the environment CAST and Evolution CAST Krell Current Audio Signal Transmission or CAST is a proprietary Krell circuit tech nology for connecting analog components transmitting the audio waveform between components in the current domain rather than in the voltage domain The speed and bandwidth provided by Krell CAST and its circuitry update Evolution CAST yield accurate realistic music reproduction enabling connected compo nents to perform as if they are all part of a single circuit Single ended A two wire input or output circuit Single ended connections are not recommend ed for connections requiring long cable runs Use care when using single ended connections because the ground connection is made last and broken first Turn the system off on prior to making or breaking
6. ON The 12 Volt trigger output is enabled at power on for the selected trigger Trigger 1 or 2 OFF The 12 Volt trigger output is disabled at power on for the selected trigger Trigger 1 or 2 DELAY The 12 volt trigger output is enabled at power on for the selected trigger Trigger 1 or 2 and the delayed for a period of time 0 20 seconds RC 5 Control Recall 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 2 Press the enter button on the preamplifier front panel or the enter key 6 on the remote control The front panel display 3 shows the default mode Link TRANSMIT 3 Use the level control knob or the up and down keys to select the desired option LINK TRANSMIT OF LINK RECEIVE 4 Press the enter button or key to confirm the selection The front panel display reads RC 5 CONTROL This function enables you to access factory default settings or your own saved settings or to undo a clone The options are FACTORY SAVED 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 RECALL 2 Press the enter button on the preamplifier channel front panel or the or enter key 6 on
7. The front panel display 3 shows the default mode LINKED 3 Use the level control knob or the up and down keys to select the desired option LINKED OF UNLINKED 4 Press the enter button or key to confirm the selection The front panel reads LINKED LINKED When preamplifier channels are linked power volume balance phase tape mute and input selections are automatically communicated between linked pre amplifier channels All other settings remain local UNLINKED When a preamplifier channel is unlinked it does not respond to commands from any other linked preamplifier channels After the preamplifier channel is unlinked settings can be changed independent of other preamplifier channels This function enables you to control the mute mode Options are FULL 20 dB BACK Enter the menu then 1 Use the level control knob or the up and down keys 14 to select MUTE 2 Press the enter button on the preamplifier front panel or the or enter key 6 on the remote control The front panel display 3 shows the default mode FULL 3 Use the level control knob or the up and down keys to select the desired option FULL Or 20 dB 4 Press the enter button or key to confirm the selection The front panel display reads MUTE FULL The output of the Evolution 202 is completely silenced 20dB The output of the Evolution 202 is reduced by 20 dB and may still be audible continued SECTION SEVEN Customizing the E
8. 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 2 Use the level control knob on the preamplifier front panel or up and down keys 14 on the remote control to select VOLUME DISPLAY Press the enter button on the preamplifier front panel or the enter key 6 on the remote control The front panel display 3 shows the default mode dB Use the level control knob or the up and down keys to select the desired option NUMERIC OF dB Press the enter button or key to confirm the selection The front panel display reads VOLUME DISPLAY sono EIGHT 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 steps 1 Check that all input and output connections are of sound construction 2 With the preamplifier channel off remove the interconnect cables then turn the preamplifier channel on If the hum disappears turn the preamplifier channel off and reinsert one of the interconnect cables Turn the preamplifier channel back on
9. shows the default mode 8 1 Use the level control knob or the up and down keys to select the desired input B 1 B 2 S 1 S 2 S 3 C 1 C 2 or TAPE Press the enter button or key The display 3 shows the default mode CENTER Use the level control knob or the up and down keys to select the desired bal ance option from 0 to 5 dB in 5 dB increments left or right Press the enter button or key to confirm the selection The front panel display reads INPUT BALANCE TRIM continued SECTION SEVEN Customizing the Evolution 202 continued Display 5 Menu Button or Key Enter or exit the menu 14 Volume Knob or Level Keys Navigate the menu hierarchy review functions and configu ration options 6 Enter Button or Key Select a configuration option confirm a selection BACK Scroll backwards through the menu hierarchy exit a menu option without confirming it 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 ON TIMED Enter the menu then 1 Use the level control knob on the preamplifier front panel or the up and down keys on the remote control 14 to select DISPLAY 2 Press the enter button on the preamplifier front panel or the enter key 6 on the remote control The front panel display 3 reads MODE 3 Press the enter button or key 6 again The front panel display shows the default mode on 4 Use the
10. Repeat this process for each cable 3 If the hum reappears with one or both interconnect cables reinserted the cable needs to be replaced 4 If the interconnect cables are sound you may be experiencing a ground loop Please contact your authorized Krell dealer distributor or Krell for suggestions on how to eliminate the ground loop 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 Should the product fail to perform at any time during the warranty Krell will repair it at no cost to the owner except as set forth in this warranty This warranty does not apply to damage caused by acts of God or nature This warranty shall be in lieu of any other warranty expressed or implied including but not limited to any implied warranty of merchantability or fitness for a particular purpose There are no warranties which exceed beyond those described in this document if the product does not perform as warranted herein the owner s sole remedy shall be repair In no event will Krell be liable for incidental or consequential damages arising from purchase use or inability to use the product
11. 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 35 Recall page 39 Balance channel page 37 Input Trigger page 35 RS 232 Control page 40 Balance input trim page 37 IR Out Control page 36 Save page 40 Display page 32 Link Control page 37 Theater Mode page 41 Info page 33 Mute page 37 Volume Display page 42 Input Level Trim page 34 Output Trigger page 38 Input Name page 34 RC 5 Control page 39 Navigation Conventions Navigating the Evolution 202 menu is straightforward and consistent throughout using four functions and the menu option BACK 5 Menu Button or Key To enter the menu press the menu button on the preamplifier front panel or the menu key on the remote control Once you are in the menu you can press the menu button or key to exit the menu 14 Volume Knob or Level Keys Use the volume knob on the preamplifier front panel or the up and down keys on the remote control to scroll forward and backward through the menu hierarchy Each menu list is a continuous loop 6 Enter Button or Key Press the enter button on the preamplifier front panel or the enter key on the remote control to select a function or a configuration option and to confirm a selection 3 Front Panel Display The display shows the active function and configurable options BACK Select back to scroll backwards up the menu hierarchy o
12. single ended 16 or tape inputs 17 on the Evolution 202 Connect the appropriate main outputs 20 on the Evolution 202 to your ampli fier Connect the supplied AC power cord to the IEC power cord receptacle 27 Plug the AC power cord into AC power The front panel display 3 scrolls through EVOLUTION 2 SOFTWARE VERSION and the red stand by LEDs illuminate 7 indicating that the Evolution 202 preamplifier is in stand by mode The scrolling stops when the Evolution 202 is ready to be powered on Note Use only the power cord provided with the preamplifier channel to make the connec tion to AC power Operation with a power cord other than the one supplied by Krell could induce noise limit current or otherwise impair the ability of the preamplifier chan nel to perform optimally sono OIX 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 care when setting high playback levels Always lower the volume level at the first sign of loudspeaker distress 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 202 is connected to your system and to AC power and the fron
13. single ended connections Operation Off When the stand by power LEDs are not illuminated the preamplifier is off Stand by A low power consumption status that keeps the audio and regulator circuits at idle The stand by power LEDs are illuminated in red when the preamplifier is in stand by mode Krell recommends leaving the preamplifier in stand by mode when it is not playing music Operation When the standby power LEDs are illuminated in blue the preamplifier is in opera tional mode and ready to play music continued 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 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 Carton The Evolution 202 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 This measures 17 3 in 43 8 cm wide by 3 8 in 9 7 cm high by 18 3 in 46 4 cm deep and weighs 18 lbs 8 1 kg Power Supply Chassis This measur
14. the entire system CAST transmission unifies individual components and inter connects into an electrically linked whole The original signal remains unaltered from source to speaker CAST Basics Here is how a CAST audio system works Internally each CAST source transfers or amplifies current using Krell Current Mode circuitry This current signal is then output using CAST circuitry When the signal is received by a CAST input Krell Current Mode circuitry again takes over until the signal reaches the loudspeaker By maintaining the musical signal in the current domain from beginning to end an entire CAST system behaves as if it is one component With CAST circuit board properties and signal transmission aberrations between components are eliminat ed Cable impedances and their effects on the transmitted signal are non existent How CAST and Krell Current Mode Interact While CAST is a new method of transferring the musical signal between compo nents its origin stems from Krell Current Mode the technology developed to transfer the musical signal within a component CAST combined with Krell Current Mode takes circuitry signal transmission to the next evolutionary level In essence D continued SECTION ONE Evolution 202 Features and Technology continued 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 Mo
15. the remote control The front panel display 3 shows the default mode FACTORY 3 Use the level control knob or the up and down keys to select the desired option FACTORY Or SAVED 4 Press the enter button or key to confirm the selection The front panel display reads RECALL FACTORY Recalls the factory settings SAVED Recalls settings previously stored in memory using the save function See also Save on the next page continued SECTION SEVEN Customizing the Evolution 202 continued RS 232 Control This function enables you to change the link transmit status of the Evolution 202 The options are LINK TRANSMIT LINK RECEIVE Save 5 Menu Button or Key Enter or exit the menu 14 Volume Knob or Level Keys Navigate the menu hierarchy review functions and configu ration options 6 Enter Button or Key Select a configuration option confirm a selection BACK Scroll backwards through the menu hierarchy exit a menu option without confirming it Enter the menu then 1 2 Use the level control knob on the preamplifier channel front panel or up and down keys 14 on the remote control to select RS 232 CONTROL Press the enter button on the preamplifier channel front panel or the enter key 6 on the remote control The front panel display 3 shows the default mode LINK TRANSMIT Use the level control knob or the up and down keys to select the desired option LINK TRANSMIT OF LINK RECEI
16. 70 VA toroidal transformer with four 8 amp bridge rectifiers and 39 600 microfarads of filter capacitance A dedicated 90 VA toroidal transformer powers the preamplifier s digital control circuitry The preamplifier has as much power supply capability as many stereo power amplifiers 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 before listening 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 The Voltage Signal Transmission and the Traditional Audio System Traditionally signal is transmitted in the voltage domain between two components In an audio system each component is a discrete entity with unique characteris tics that act upon the musical signal independently Each component is unaware of the other components in the system The cables that connect the components also have their own electrical characteristics which affect the sonic presentation of
17. EVOLUTION EVOLUTION 202 STEREO PREAMPLIFIER OWN NERT S REHERENGE SKR LL Evolution 202 Stereo Preamplifier Owner s Reference v06 0 TEL 203 298 4000 Krell Industries Inc FAX 203 891 2028 45 Connair Road E MAIL sales krellonline com Orange CT 06477 3650 USA WEBSITE hittp www krellonline com cE This product complies with the EMC directive 89 336 EEC and the low voltage directive 73 23 EEC IMPORTANT SAFETY INSTRUCTIONS 7 Read Instructions 2 Keep these Instructions 3 Heed all Warnings 4 Follow all Instructions 5 Do not use this apparatus near water 6 Clean only with dry cloth 7 Do not install near any heat sources such as radiators heat registers stoves or other appa ratus including amplifiers that produce heat 8 Unplug this apparatus during lightning storms or when unused for long periods of time 9 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as a power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 10 The Evolution 202 preamplifier must be placed on a firm level surface where it is not exposed to dripping or splashing 11 The ventilation grids on the top of the Evolution 202 preamplifier and the space underneath
18. Features and Technology page 6 Features Revolutionary Krell CAST Technology Definition of Terms SECTION TWO Unpacking and Placement page 11 Opening the Evolution 202 Shipping Carton SECTION THREE Quick Start page 13 Connecting the Evolution 202 to Your System Operating the Evolution 202 SECTION FOUR Anatomy of the Evolution 202 page 15 Front Panel Description Remote Control Description Battery Installation and Back Panel Description SECTION FIVE Connecting the Evolution 202 to Your System page 26 Input and Output Connections Connection Steps SECTION SIX Evolution 202 Operation page 28 On Off and Stand by Operation SECTION SEVEN Customizing the Evolution 202 page 29 Navigation Conventions Menu Functions SECTION EIGHT Troubleshooting System Noise page 43 WARRANTY page 44 RETURN AUTHORIZATION PROCEDURE page 46 SPECIFICATIONS page 47 List of Illustrations Figure 1 page 15 Evolution 202 Preamplifier and Power Supply Front Panels Inset Preamplifier and Power Supply Stacked View Figure 2 page 19 Evolution 202 Remote Control Figure 3 page 22 Evolution 202 Preamplifier and Power Supply Back Panels 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
19. Input Selection Buttons 11 Tape Button and LED 12 Mute Button and LED 13 Phase Button and LED 14 Level Control Knob 00D UMNw ABN NF Inset Preamplifier and Power Supply Stacked View SECTION FOUR Anatomy of an Evolution 202 continued 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 Power Preamplifier Chassis The preamplifier front panel provides power on input and zone selection level control menu functions and status display Power Supply Chassis Powerful transformers high quality regulators and extensive electrical and magnetic shielding are housed in a separate power supply Power Button or Key Use this button or key to switch the Evolution 202 between the stand by and operational modes Stand by Power LED The preamplifier and power supply LEDs illuminate red stand by when the Evolution 202 is plugged into a standard AC wall receptacle They illuminate blue operational mode when the power button 1 is pressed while the Evolution 202 is in stand by mode Remote Functions on the Front Panel 2 Infrared Emitter The stand by Power LED 7 flashes when the Evolution 202 sends signals via this infrared emitter to a programmable remote control such as the Universal Krell Touch Screen Remote See R Out Control on
20. VE Press the enter button or key to confirm the selection The front panel display reads RS 232 CONTROL This function enables you to save a copy of the current settings The options are GO BACK Enter the menu then 1 2 GO Use the level control knob on the preamplifier channel front panel or up and down keys 14 on the remote control to select SAVE Press the enter button on the preamplifier channel front panel or the or enter key 6 on the remote control The front panel display 3 shows the default mode Go Press the enter button or key to save the settings The front panel display reads SAVE Saves a copy of current settings to memory overwriting previously saved settings 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 level control of the Evolution 202 Volume adjustments are then made through the preamp processor connected to the input configured for theater mode on the Evolution 202 The options are on OFF 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 THEATER 2 Press the enter button on the preamplifier front panel or the enter key 6 on t
21. act 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 H CD Key Use this to activate CD functions DVD Key Use this to activate DVD functions 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 Play Key Use this key to begin compact disc playback Stop Key Use this key to end compact disc playback Track Forward and Back Keys Use these keys to select and begin playing the track that follows or precedes the current track Search Forward and Back Keys Press and hold these keys to scroll forward or backward through the current track F Direction Keys Use these keys to navigate CD and DVD menus G Select Key Use this keys to make selections from CD and DVD menus J Title Key Use this with CD or DVD player menus Note For information on track programming functions refer to the owner s reference of your Krell compact disc player continued SECTION FOUR Anatomy of an Evolution 202 continued Figure 3 Evolution 202 Preamplifier and Power Supply Back Panels Preamp outputs KRELL neve O Qs EO EVOLUTION n in four u le J oc o io gt PREAMP OUTPUTS a Qe 000090
22. ckwards through the menu hierarchy exit a menu option without confirming it This function enables you to configure the input trigger The options are OFF NORMAL THEATER Enter the menu then 1 2 Use the level control knob on the preamplifier front panel or the up and down keys on the remote control to select INPUT TRIGGER Press the enter button on the preamplifier front panel or the or enter key 6 on the remote control The front panel display 3 shows the default mode NORMAL Use the level control knob or the up and down keys to select the desired option OFF NORMAL OF THEATER Press the enter button or key to confirm the selection The front panel display reads INPUT TRIGGER continued SECTION SEVEN Customizing the Evolution 202 continued 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 Theater Mode on page 41 IR Out Control 5 Menu Button or Key Enter or exit the menu 14 Volume Knob or Level Keys Navigate the menu hierarchy review functions and configu ration options 6 Enter Button or Key Select a configuration option confirm a selection BACK Scroll backwards through the menu hierarchy exit a menu option without confir
23. d navigate customize functions as the preamplifiers 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 same function and callout number as the corresponding front panel controls described in the preceding pages Keys Labled A to J These remote keys have functions that are unique to the remote control and are described below Battery Installation and Removal The remote control uses 2 AAA size 1 5 Volt batteries Batteries are included with the shipment To install the batteries 1 Remove the remote control backplate using the supplied T 10 Torx wrench 2 Install the batteries following the battery position diagram on the plastic battery receptacle 3 Replace and secure the backplate Notes Replace batteries when remote control function becomes intermittent Remove batteries if the remote control is not used for a long period of time Battery leakage can damage the remote control Amplifier Functions A Amp Pwr Key Use this key to activate Krell amplifiers connected to your system B Sel Meter Select Key Use this key to select the meter range of the power meter scale on the front of a Krell Evolution One power amplifier Please refer to the Evolution One Owner s Reference for more information Balance Functions C Bal ance Keys Use these with the level keys 14 to adjust the left and right channel balance Comp
24. de technologies unify separate Krell components into a single global circuit Krell Current Mode technology enjoys bandwidth increases up to an order of magnitude greater than their voltage based counterparts This dramatic increase in circuit bandwidth delivers near perfection in the audible band that typi cally suffers from phase distortions in voltage circuits CAST Cable Construction A CAST system uses cables manufactured by Krell and other manufacturers spe cially licensed by Krell Thin and flexible CAST cables are constructed with the same build quality as other Krell components and are aesthetically matched to the components that Krell manufactures An all metal body and locking connectors with gold contacts are part of the standard no compromise specification devel oped for every CAST cable made Evolution CAST By employing radical current mirror circuitry the Evolution 202 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 The Best Musical Performance When you operate a CAST system you will hear significant improvements in every performance area speed precision dynamic range depth and width of the sound stage transient impact tonal balance harmonic distortion and more The goal for CAST is the same company goal used for all Krell products
25. ecifications 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 single ended via RCA connector Tape outputs 1 pr single ended via RCA connector buffered Control inputs 1 RS 232 input via a 9 pin D subminiature connector 1 remote IR detector input via a 3 conductor 3 5 mm connector 1 12 VDC trigger input via 3 5 mm connector 1 preamplifier link via an RJ 45 connector Control outputs 2 individually programmable 12 VDC trigger outputs via 3 5 mm connectors 1 preamplifier link via an RJ 45 connector Power output 1 phono power output 20 VDC for KPE via a 9 pin D subminiature connector Input impedance CAST 45 Ohms Balanced 95 k Ohms Single ended 47 5 k Ohms Output impedance CAST gt 1 M Ohms Balanced 50 Ohms Single ended 25 Ohms Gain 12 dB CAST or balanced output 6 dB single ended output Volume control Balanced current mode 16 bit discrete R 2R ladder Input overload CAST 14 mA RMS Balanced 14 V RMS Single ended 7 V RMS Output overload CAST 16 mA RMS Balanced 16 V RMS Single ended 8 V RMS Frequency response 20 Hz to 20 kHz 0 02 dB 0 1 Hz to 1 5 MHz 0 3 dB Total harmonic distortion plus noise Balanced Output lt 0 004 20 Hz to 20 kHz 4 V RMS or
26. ectors for use with Krell CAST equipped amplifiers Configurations 21 CAN Link These RJ 45 link connectors are connected in parallel They are used to con nect the Evolution 202 preamplifier to other CAN Link enabled Krell products continued SECTION FOUR Anatomy of an Evolution 202 continued Remote Connections on the Back Panel 22 23 25 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 Port Sending Commands and Interpreting Data for more information RC 5 In The RC 5 remote connector is used with a third party remote control system that provides RC 5 IR data with the carrier intact via a wired connection A stereo tip ring sleeve 1 8 inch mini connector is used in the following configu ration Tip RC 5 data Ring V Sleeve GND 12 VDC In Out 12 V Trigger The preamplifier has 2 outputs that send and one input that receives 12 VDC power on off 12 V trigger signals to and from other Krell components and other devices that incorporate a 12 V trigger This allows you to turn other components on or off or to and from stand by through the remote control When the Evolution 202 is switched to operational mode and is connected to other components through the 12 V trigger it sends a signal
27. es 17 3 in 43 8 cm wide by 3 8 in 9 7 cm high by 17 7 in 44 8 cm deep and weighs 28 lbs 12 7 kg To Remove the Preamplifier from the Shipping Carton 1 Open the shipping carton and remove the top layer of foam The carton con tains these items 1 Preamplifier chassis 1 Power supply chassis 1 IEC Connector AC Power cord 1 12 pin DC cable 1 Remote control 2 AAA size 1 5 Volt batteries for the remote 1 T 10 Torx wrench for the remote control 1 Owner s Reference 2 Carefully remove the preamplifier power supply and accessories from the box 3 Place the preamplifier and power supply in a safe location and remove the protective plastic wrapping 4 Place the power supply chassis where you intend to use the preamplifier Krell recommends that you place the preamplifier chassis on top of the power supply chassis continued soron 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 functions The front and rear panels are shown in the diagrams on pages 15 and 22 Each button or feature is labeled with a callout number and these numbers are shown in brackets in the sections below In the following instructions the word button refers to a front panel operation and key
28. even if Krell has been advised of the possibility of such damages IMPORTANT The user is responsible for notifying his or her Krell dealer distributor or Krell that a tube preamplifier will be used with the Full Power Balanced Series amplifiers so that the Krell dealer distributor or Krell can activate the coupling capacitors If the user does not notify the Krell dealer distributor or Krell and uses a tube preamplifier without the Full Power Balanced Series amplifier s coupling capacitor engaged Krell reserves the right to refuse warranty related service due to DC related damage Proof of purchase in the form of a bill of sale or receipted invoice substantiating that the product is within the warranty period must be presented to obtain warranty service The warranty begins on the date of the original retail purchase as noted on the bill of sale or receipted invoice from an authorized Krell dealer or distributor Previously owned equipment when re purchased from an authorized Krell dealer or distributor has the balance of the original warranty based on the original date of manufacture The warranty for a Krell product is valid only in the country to which it was originally shipped through the authorized Krell distributor for that country and at the factory There may be restrictions on or changes to Krells warranty because of regulations within a specific country Please check with your distributor for a complete under standing of t
29. firm the selection and return to the input list in Step 3 The front panel display shows the input name To select input names for other inputs repeat Steps 3 and 4 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 2 Use the level control knob on the preamplifier front panel or the up and down keys 14 on the remote control to select INPUT PHASE Press the enter button on the preamplifier front panel or the enter key 6 on the remote control The front panel display 3 shows the default mode 8 1 Use the level control knob or the up and down keys to select the desired input from the list B 1 B 2 S 1 S 2 S 3 C 1 C 2 or TAPE Press the enter button or key The front panel display shows the default mode NORMAL Use the level control knob or the up and down keys to select NORMAL Or INVERT Press the enter button or key to confirm the selection The front panel display shows the selected input NORMAL The phase of the selected input is unaffected INVERT The phase of the selected input is inverted 180 degrees Input Trigger 5 Menu Button or Key Enter or exit the menu 14 Volume Knob or Level Keys Navigate the menu hierarchy review functions and configu ration options 6 Enter Button or Key Select a configuration option confirm a selection BACK Scroll ba
30. he left and right output channels The options are CENTER L 5 5 dB lt R 5 5 dB gt Enter the menu then 1 2 4 Use the level control knob on the preamplifier front panel or up and down keys 14 on the remote control to select BALANCE Press the enter button on the preamplifier front panel or the enter key 6 on the remote control The front panel display 3 shows the default mode CENTER Use the level control knob or the up and down keys to select the desired bal ance option from 0 to 5 dB in 5 dB increments left or right Press the enter button or key to confirm the selection The front panel display reads BALANCE Balance input trim 5 Menu Button or Key Enter or exit the menu 14 Volume Knob or Level Keys Navigate the menu hierarchy review functions and configu ration options 6 Enter Button or Key Select a configuration option confirm a selection BACK Scroll backwards through the menu hierarchy exit a menu option without confirming it This function enables you to adjust the balance between the left and right chan nels for each input The options are CENTER L 5 5 dB lt R 5 5 dB gt Enter the menu then 1 2 Use the level control knob on the preamplifier front panel or up and down keys 14 on the remote control to select INPUT BALANCE TRIM Press the enter button on the preamplifier front panel or the enter key 6 on the remote control The front panel display 3
31. he remote control The front panel display 3 shows the default input B 1 3 Use the level control knob or the up and down keys to select the desired input B 1 B 2 S 1 S 2 S 3 C 1 C 2 OF TAPE 4 Press the enter button or key The front panel display shows the default mode OFF 5 Use the level control knob or the up or down keys to select on or OFF 6 Press the enter button or key to confirm the selection and return to the select ed input ON The selected input is set to THEATER and the volume control for the theater input is disengaged on the Evolution 202 OFF The selected input is configured normally and the volume control for the normal input is engaged on the Evolution 202 Note Only one input on the Evolution 202 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 202 selects the theater input automatically upon power on if the input trigger is configured for THEATER See Input Trigger on pages 35 36 continued SECTION SEVEN Customizing the Evolution 202 continued Volume Display 5 Menu Button or Key Enter or exit the menu 14 Volume Knob or Level Keys Navigate the menu hierarchy review functions and configu ration options 6 Enter Button or Key Select a configuration option confirm a selection BACK Scroll backwards through the menu hierarchy exit a menu option without confirming it
32. he warranty in your country continued 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 If you have purchased your Krell product out side the U S A and wish to have it serviced at the factory all freight and associated charges to the factory are your responsibility Krell will pay return freight to the U S A based freight forwarder of your choice Freight and other charges to ship the product from the freight forwarder to you are also your responsibility Krell is not responsible for any damage incurred in transit Krell will file claims for damages as necessary for a product damaged in transit to the factory You are responsible for filing claims for shipping damages during the return shipment Krell does not supply replacement parts and or products to the owner of the prod uct Replacement parts and or products will be furnished only to the distributor performing service on this product on an exchange basis only any parts and or products returned to Krell for exchange become the property of Krell No expressed or implied warranty is made for any Krell product damaged by acci dent abuse misuse natural or personal disaster or unauthorized modification Any unauthorized voltage conversion disas
33. level control knob or the up and down keys to select the desired option ON Or TIMED 5 Press the enter button or key to confirm the selection The front panel display reads MODE 6 Use the level control knob or the up and down keys to select BRIGHTNESS 7 Press the enter button or key The front panel display shows the default mode HIGH 8 Use the level control knob or the up and down keys to select the desired brightness OFF LOW 25 MED 50 OF HIGH 100 9 Press the enter button or key to confirm the selection The front panel display reads BRIGHTNESS ON The front panel display is always on TIMED The front panel display times out after 5 seconds BRIGHTNESS Controls the brightness of the display When the brightness setting is OFF the display is at 50 of brightness when in menu mode and turns completely off when you leave the menu mode PC Boards CONTROL DISPLAY ENCODER MAIN L MAIN R POWER CONN POWER SUPP DIG CONN 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 2 Use the level control knob on the preamplifier front panel or up and down keys 14 on the remote control to select INFO Press the enter button on the preamplifier front panel or the enter key 6 on the remote control The front panel display 3 shows the software ver
34. ming it This function enables you to access Evolution 202 IR commands and program a learning remote control 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 IR OUT 2 Press the enter button on the preamplifier front panel or the enter key 6 on the remote control The front panel display 3 shows the default mode B 1 MAIN 3 Use the level control knob or the up and down keys to select the desired IR command from the list 4 Press the enter button or key to send the command out via the preamplifier front panel IR transmitter 2 The stand by LED 7 on the preamplifier chassis flashes indicating that the command has been sent 5 Repeat Steps 2 4 for each of the commands you wish to transmit 6 Press the enter button or key to confirm the selection The front panel display reads IR OUT For a listing of IR codes see the Evolution 202 developer s reference entitled RS 232 Port Sending Commands and Interpreting Data Link Control CAN Link Mute 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 2 Press the enter button on the preamplifier front panel or the enter key 6 on the remote control
35. nts of the music The Evolution 202 is a two chassis design with a separate power supply that isolates the critical audio stages for the lowest possible noise floor A combination of advanced technologies and inspired design elevate the Evolution 202 preamplifiers performance to the reference level Features Preamplifier The Evolution 202 has a 1 MHz open loop bandwidth in a zero feedback bal anced Krell Current Mode design terminating in Evolution CAST CAST inputs and outputs drive a newly designed current mode balanced input stage Class A balanced circuitry is used throughout Cascoded current mirror input and output stages utilize an LED voltage reference to achieve an exceptionally linear state of operation There is no feedback employed anywhere in the design A digitally controlled ana log volume control is accomplished entirely in the current domain The bandwidth and transient response through this circuit is virtually unaffected by the volume setting A new Krell designed digital control circuit monitors and optimizes the preamplifiers operating parameters Power Supply The separate power supply makes extensive use of electrical and magnetic Shielding to keep radiated interference out of critical preamplifier circuits Internal line conditioning circuitry filters RF noise on the AC power and compensates for asymmetric power waveforms and DC on the mains Power for the preamplifier s analog stages comes from a large 1
36. ommends using its proprietary Krell CAST system for unparalleled sonic performance for connections between the Evolution 202 preamplifier and other CAST equipped components Krell CAST uses flexible interconnecting cables that can be drawn through tight spaces and concealed The Evolution 202 also offers balanced operation The circuitry and connections associated with balanced operation not only can minimize sonic loss but also are immune to induced noise especially for installations using long cables XLR Pin Configuration Pin 1 Ground Pin 2 Non inverting 0 Pin 3 Inverting 180 Inputs and outputs are located on the Evolution 202 back panels Maintain the correct left right orientation when hooking up your system 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 2 Connect the power supply chassis and preamplifier chassis with the 12 pin DC cable provided using the DC power connectors 24 on the back panels Neatly arrange and organize wiring to and from the Evolution 202 preamplifier and all components Separate AC wires from audio cables to prevent hum or other unwanted noise from being introduced into the system Connect the outputs of your source equipment to the appropriate CAST 18 balanced 15
37. page 36 Infrared Sensor The infrared sensor receives commands from the Evolution 202 remote control For proper remote control operation make sure the infrared sensor is not cov ered or obstructed Preamplifier Functions 8 9 10 Input Select Buttons or Keys 11 12 13 Display 3 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 level Tape Button and LED or Key Use this button or key to select the tape input that is connected to an analog tape source The red tape LED illuminates when the tape input is selected The front panel display 3 shows TAPE and the main volume level Mute Button and LED or Key Use this button or key to mute the preamplifier output To unmute press the mute button again The red mute LED illuminates when mute is selected To customize mute operation see Mute on page 37 Phase Button and LED or Key Use this button or key to invert the absolute polarity of the main output by 180 degrees The red phase LED illuminates when phase is selected Front Panel Display The front panel display provides preamplifier channel status messages includ ing input status tape output status volume level balance offset and menu selections DD continued SECTION FOUR Anatomy of an Evolution 202 continued
38. perform optimally continued SECTION THREE Quick Start 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 shows the factory default input s 1 and level INF The Evolution 202 is now in the operational mode 2 With the preamplifier output muted or the volume fully attenuated select a source manually using the front panel input select buttons 8 9 or 10 or the remote input select keys Start playing the source Use the level control knob 14 or the remote level keys to set the volume to a comfortable level 3 To return the preamplifier to the stand by mode press the power button 1 or remote power key Krell recommends leaving the Evolution 202 in the stand by mode when it is not playing music sono FOUR Anatomy of the Evolution 202 This section describes the Evolution 202 Preamplifier functions Figure 1 Evolution 202 Preamplifier and Power Supply Front Panels KRELL EVOLUTION MENU ENTER 20 O O KRELL EVOLUTION 202 Power Button Stand by P ower LED Infrared Emitter Infrared Sensor Front Panel Display Menu Button Enter Button Single ended Input Selection Buttons Balanced Input Selection Buttons 10 CAST
39. r to exit a menu option without confirming it The first list you see in the menu is the list of configurable functions Select a con figurable function to view a submenu the list of options that configure the func tion You can configure some options as well using a second submenu continued SECTION SEVEN Customizing the Evolution 202 continued 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 The options are OFF ON 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 Ac MAINS 2 Press the enter button on the preamplifier front panel or the enter key 6 on the remote control The front panel display 3 shows the default mode OFF 3 Use the level control knob or the up and down keys to select the desired option OFF or ON 4 Press the enter button or key to confirm the selection The front panel display reads AC MAINS OFF The Evolution 202 switches to stand by mode when it detects AC power ON The Evolution 202 turns on immediately bypassing the stand by mode when it detects AC power Balance channel This function enables you to adjust the balance between t
40. s input At no other point in the reproduction process is music so vulnerable to change as the signal level is small and susceptible to noise and distortion Having always valued the role of the preamplifier in fine audio systems take pre amplifier design very seriously realize that no matter how impressive an amplifi er s performance it can be no better than that of the preamplifier driving it My new Evolution 202 preamplifier employs a powerful separate power supply Krell Current Mode gain stages from input to output and Current Audio Signal Transmission CAST receivers and transmitters Utilizing these powerful technolo gies the Evolution 202 conveys the complete range of timbre and dynamics that comprise the foundation musical performance Typical of my latest preamplifier designs the Evolution 202 preamplifier includes a thoughtful suite of menu options and can be customized for the greatest ease of operation hope that you enjoy your new Evolution 202 preamplifier Sincerely Daniel D Agostino Chief Executive Officer sono 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 carefully transmit audio signals without damaging the ephemeral staging and dimensional compone
41. sembly component replacement perforation of chassis updates or modifications performed to the product will void the warranty The operating voltage of the product is determined by the factory and can only be changed by an authorized Krell distributor or at the factory The voltage for this product in the U S A cannot be changed until six months from the original pur chase date In the event that Krell receives a product for warranty service that has been modi fied in any way without Krell authorization all warranties on that product will be void The product will be returned to original factory layout specifications at the owner s expense before it is repaired All repairs required after the product has been returned to original factory specifications will be charged to the customer at current parts and labor rates All operational features functions and specifications and policies are subject to change without notification To register your product for warranty benefits please complete and return the Warranty Registration Card enclosed in the shipping box within 15 days of pur chase Thank you 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 Form in the Service Section of our websi
42. sion num ber Rotate the level control knob clockwise or press the up key The front panel display shows the EEPROM version number Rotate the level control knob clockwise or press the up key again The front panel display shows the PC board version number Press the enter button or key Use the level control Knob or the up and down keys to scroll through the version numbers of PC boards from the PC Boards listed at left EEPROM Electrically erasable programmable read only memory An erasable memory chip used in the Evolution 202 to store menu selection information continued Input Name Options AUX AUX1 AUX2 AUX3 B 1 B 2 B 3 BYPC 1 C 2 C 3 CABLE CD CD1 CD2 CD R COMP DAC DAT DCC DISC DISC 1 DISC 2 DISC 3 DSS DVD DVD1 DVD2 DVD3 DVD A EQ GAME HI 8 LD LD1 LD2 LINE 1 LINE 2 LINE 3 LINE MDISC MIXER MON PHONO PHON1 PHON2 PROC S 1 S 2 S 3 S 4 SACD SAT SRC1 SRC2 SRC3 SURR S VID TAPE1 TAPE2 TAPE3 TAPE TEST THR TUNER TUNR1 TUNR2 TV VCR VCR1 VCR2 VCR3 VDISC VIDEO VID1 VID2 VID3 8MM 8TRK SECTION SEVEN Customizing the Evolution 202 continued Input Level Trim 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 2 Use the level control knob on the preamplifier front panel or the up and down keys 14 on the remote control to selec
43. t INPUT LEVEL TRIM Press the enter button on the preamplifier front panel or the enter key 6 on the remote control The front panel display 3 shows the default mode 8 1 Use the level control knob or the up and down keys to select the desired input B 1 B 2 S 1 S 2 5 3 C 1 C 2 or TAPE Press the enter button or key The front panel display shows the default mode 0 dB Use the level control knob or the up and down keys to select the desired trim option 6 dB in 1 dB increments Press the enter button or key to confirm the selection The front panel display shows the selected input Input Name This function enables you to select an input name for each input The input name options are listed in the left margin on this page Enter the menu then 1 2 Use the level control knob on the preamplifier front panel or up and down keys 14 on the remote control to select INPUT NAME Press the enter button on the preamplifier front panel or the enter key 6 on the remote control The front panel display 3 shows the default mode 8 1 Use the level control knob or the up and down keys to select the desired input B 1 B 2 S 1 S 2 S 3 C 1 C 2 or TAPE Press the enter button or key The front panel display shows no characters Use the level control knob or the up and down keys to select the desired input name from the input name options listed at left Press the enter button or key to con
44. t panel display 3 has stopped scrolling begin operation 1 Press the power button on the preamplifier front panel or the pwr key 1 on the remote control The stand by power LEDs 7 turn blue and the front panel displays read INITIALIZING The front panel displays shows the factory default input s 1 and level inr The Evolution 202 is now in the operational mode 2 With the preamplifier output muted or the volume fully attenuated select a source manually using the input select buttons or the remote keys 8 9 10 11 Start playing the source Use the level control knob or level keys 14 to set the volume to a comfortable listening level 3 To return to the stand by mode press the power button or pwr key Krell recommends leaving the Evolution 202 in the stand by mode when it is not playing music Turn the Evolution 202 off when the system is not being used for an extended period of time To Turn Off The System 1 Place the amplifiers in the stand by mode 2 Press the front panel power button or the remote control pwr key 3 to switch the Evolution 202 to the stand by mode 3 Turn off the amplifiers using the back panel power switch or by disconnecting them from AC power 4 Turn off the Evolution 202 by unplugging the AC power cord from AC power mM sono SEVEN Customizing the Evolution 202 The Evolution 202 Preamplifier easy to use menu allows you to configure the fol lowing functions You can
45. te at http www krellonline com To contact the Krell Service Department TEL 203 298 4020 Monday Friday 9 00 AM to 5 00 PM EST FAX 203 795 2287 E MAIL service krellonline com WEBSITE http www krellonline com Evolution 202 PRODUCT MODEL NUMBER SERIAL NUMBER To return a product to Krell please follow this procedure so that we may serve you better 1 Obtain a Return Authorization Number R A number and shipping address from the Krell Service Department 2 Insure and accept all liability for loss or damage to the product during ship ment to the Krell factory and ensure all freight shipping charges are prepaid The product may also be hand delivered if arrangements with the Service Department have been made in advance Proof of purchase will be required for warranty validation at the time of hand delivery IMPORTANT Use the original packaging to ensure the safe transit of the product to the factory dealer or distributor Krell may at its discretion return a product in new packaging and bill the owner for such packaging if the product received by Krell was boxed in nonstandard packaging or if the original packaging was so damaged that it was unusable If Krell determines that new packaging is required the owner will be noti fied before the product is returned To purchase additional packaging please contact your authorized Krell dealer dis tributor or the Krell Service Department for assistance Sp
46. that will switch other components allowing whole systems or parts of systems to be easily coordinated For more information on customizing the 12 V trigger see Input Trigger on page 35 Mono 1 8 inch mini connectors are used in the following configuration Tip 12 V Sleeve GND Notes When the Evolution 202 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 A minimum of 30 mA is required to operate the 12 V trigger Consult the owner s reference of the components used in a custom installation to take full advantage of the remote capabilities of the Evolution 202 Phono Stage Connector 28 Power 24 26 27 Phono Power Port This port is used for connecting the preamplifier to a Krell KPE phono stage DC Power Connector This is used to connect the preamplifier chassis and the power supply chassis using the provided 12 pin DC power cable Analog and Digital Power Supply Fuses Always unplug the power cord before inspecting these fuses Always replace the fuses with the exact style and rating IEC Power Cord Receptacle The IEC power connector located on the power supply chassis is for use with the provided IEC standard 15 amp AC power cord senos FIVE Connecting the Evolution 202 to Your System This section describes Evolution 202 Preamplifier connections Input and Output Connections Krell rec
47. the Evolution 202 preamplifier must be unobstructed at all times during operation Do not place flammable material above or beneath the preamplifier 12 Before making connections to the Evolution 202 preamplifier ensure that the power is off and other components are in mute or stand by mode Make sure all cable terminations are of the highest quality free from frayed ends short circuits or cold solder joints 13 Do not connect an RS 232 cable to the phono power port Output from the phono power port can seriously damage your computer 14 Do not connect the cable from a Krell KPE phono stage to the RS 232 port 15 THERE ARE NO USER SERVICEABLE PARTS INSIDE AN EVOLUTION 202 PREAMPLIFIER Please contact Krell if you have questions not addressed in this guide ai This product is manufactured in the United States of America Krell is a registered trademark of Krell Industries Inc and is restricted for use by Krell Industries Inc its subsidiaries and authorized agents Evolution Bias is a trademark of Krell Industries Inc and is a Krell technology based on U S Patent No 5 331 291 CAN Link CAST Evolution CAST and Krell Current Mode are trademarks of Krell Industries Inc All other trademarks are registered to their respective companies 2006 by Krell Industries Inc All rights reserved P N 309158W Contents List of Illustrations page 4 A Letter from Dan D Agostino page 5 SECTION ONE Evolution 202
48. volution 202 continued Output Trigger 5 Menu Button or Key Enter or exit the menu 14 Volume Knob or Level Keys Navigate the menu hierarchy review functions and configu ration options 6 Enter Button or Key Select a configuration option confirm a selection BACK Scroll backwards through the menu hierarchy exit a menu option without confirming it 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 14 on the remote control to select OUTPUT TRIGGER 2 Press the enter button on the preamplifier front panel or the enter key 6 on the remote control The display 3 shows the default mode TRIGGER 1 Press the enter button or key again The display shows the default mode OFF Use the level control knob or up and down keys to select OFF ON Or DELAY Oo A gW Select DELAY You are prompted to enter a delay time of 0 20 seconds Enter the delay time Press enter to confirm the selection The display reads DELAY CO N Use the level control knob or up and down keys to scroll to BACK Press the enter button or key to return to TRIGGER 1 10 Use the level control knob or the up and down keys to scroll to TRIGGER 2 11 Repeat Steps 3 7 to set Trigger 2
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