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Krell Industries Evolution One manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    OWNER’S REFERENCE EVOLUTION ONE MONAURAL POWER AMPLIFIER EVOLUTION[...]

  • Page 2

    Evolution One Monaural Power Amplifier Owner’ s Reference, v 05.0 Kr ell Industries, Inc. 45 Connair Road Orange, CT 06477 -3650 USA TEL 203 -799 -9954 F AX 203 - 891 -2028 E-MAIL krell@kr ellonline.com WEBSITE http://www .krellonline.com This product complies with the EMC dir ective (89 / 33 6/ EEC) and the low-voltage directive (73/ 23/ EEC). W[...]

  • Page 3

    1 iii Contents List of Illustrations, page iv A Letter from Dan D’Agostino, page 1 SECTION ONE: About Krell, page 3 The Krell Legacy , Revolutionary Krell CAST T echnology , Ensuring Maximum Per formance, and Definition of T erms SECTION TWO: Unpacking and Placement, page 12 Opening the Evolution One Shipping Car tons SECTION THREE: Anatomy of an[...]

  • Page 4

    iv List of Illustrations Figure 1, page 1 5 Evolution One Amplifier and Power Supply Chassis Front Panels Inset Evolution One Amplifier Channel: Front Panel View Figure 2, page 1 6 Evolution One Amplifier and Power Supply Chassis Back Panels Figur e 3, page 1 7 Evolution One Amplifier Chassis T op Figur e 4, page 1 8 Evolution One Power Supply Chas[...]

  • Page 5

    continue d A Letter fr om Dan D’Agostino Dear Audio Enthusiast, Thank you for your purchase of the Evolution One. The Evolution One Monaural Power Amplifier repr esents a watershed in my design philosophy and in my quest for amplifiers that deliver absolute truth in music repr oduction. This new amplifier operates solely in the current domain, wi[...]

  • Page 6

    I have some exciting news for you. W ork on a new source component for the Evolution Series is ongoing as of this writing. Possessed of the unique Evolution technologies that power the amplifier and preamplifier , this Evolution source will expose the real advantages of the latest r ecording formats while taking compact disc playback to the next le[...]

  • Page 7

    continue d SECTION ONE About Kr ell This section describes the Krell Legacy , innovative Krell amplifier design and technol- ogy , and defines key terms used in this r eference. The Kr ell Legacy “ I design every Krell component to set the standard for workmanship, style, and performance.” Dan D’Agostino High-end audio is a demanding pursuit [...]

  • Page 8

    From the KSA –1 00 to the present, Kr ell C.E.O. Dan D’Agostino has continually “pushed the envelope” of performance in his search for gr eater amplifier power . His exploration of new technologies, driven by his never -ending quest to elevate the standard of excellence, has r esulted in breakthr ough audio designs. Over the years, the Krel[...]

  • Page 9

    continue d 5 Revolutionary Kr ell CAST T echnology Current Audio Signal T ransmission, termed CAST , is a revolutionary method of con- necting analog audio components for unparalleled sonic performance. Innovative engineering combines the new Krell CAST cir cuitry with existing Krell Curr ent Mode technology to create entir e CAST systems that repr[...]

  • Page 10

    6 (How CAST and Kr ell Current Mode Interact continued) 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 eater than their voltage based [...]

  • Page 11

    7 Ensuring Maximum Performance “My pursuit of excellence in sound reproduction and my love of great musical performance has led me to the Evolution One Amplifier , and fuels the ongoing Evolution design effort at Krell.” Dan D’Agostino The Krell Evolution One Monaural Power Amplifier , built upon the foundation of huge, regulated power suppli[...]

  • Page 12

    8 Impedance Advantage The output impedance of the final gain stages is one hundredth that of the final gain stage in most power amplifiers. This provides extr emely wide bandwidth and very high current capability . The amplifier does not employ global negative feedback—the final gain stages use only 8 dB of local, nested negative feedback. This i[...]

  • Page 13

    continue d 9 Separate Power Supplies Are Quiet and Powerful Housed in a separate chassis, the power supply makes use of extensive electri- cal and magnetic shielding to keep radiated interference out of critical amplifier circuits. Internal high current line conditioning cir cuitry filters RF noise on the AC mains, as well as compensating for asymm[...]

  • Page 14

    Definition of T erms Following are the definitions of key terms used in your owner’ s reference manual. Inputs and Outputs Balanced A symmetrical input or output circuit that has equal impedance fr om both input ter - minals to a common ground r eference point. The industry standar d for pr ofessional and sound recor ding installations, balanced [...]

  • Page 15

    (Operation continued) Operational Mode When the power/stand-by LEDs (4), the backlight (5), and the power meter scale (6) are illuminated in blue, the amplifier is in the operational mode and r eady to play music. T echnology Krell Curr ent Mode A proprietary Kr ell circuit topology in which the audio gain stages of a component operate in the curre[...]

  • Page 16

    12 Unpacking and Placement This section describes the procedur es for safely unpacking and placing your Evolution One Monaural Power Amplifier . Ea ch Ev ol uti on On e a mp li fie r c ha nn el is shipped in 2 cartons: a power supply chassis in 1 carton and an amplifier chassis in the other carton. Opening the Amplifier Shipping Carton Each Evoluti[...]

  • Page 17

    13 3. Simultaneously grasp the pair of cardboar d handle cutouts at the front and back of the carton and lift the chassis straight up out of the carton. 2 people needed 4. Place the chassis in a safe location and remove the pr otective plastic wrapping. 2 people needed 5. Open the remaining 3 cartons of the Evolution One, using steps 1-4 above as a[...]

  • Page 18

    14 Placement Before you install an Evolution One amplifier into your system, please follow the guidelines in this section to choose its proper location. This will facilitate a clean, trouble-fr ee installation. Each Evolution One amplifier requir es at least two inches (5 cm) of clearance on each side and at least eight inches (20 cm) of clearance [...]

  • Page 19

    15 SECTION THREE Anatomy of an Amplifier This section describes Evolution One features and benefits. Figure 1 Evolution One Amplifier and Power Supply Chassis Front Panels 1 Amplifier Chassis 2 Power Supply Chassis 3 Power/Stand-by Button 4 Power/Stand-by LED 5 Backlight 6 Power Meter Scale 7 Power Meter W and 8 CAST LED 9 50 W Scale LED 10 5000 W [...]

  • Page 20

    Figure 2 Evolution One Amplifier and Power Supply Chassis Back Panels 16 15 Balanced Input 16 CAST Input 17 Amplifier Binding Posts 18 RC-5 Input 19 12 V T rigger In/Out 20 IEC Power Cord Receptacle 21 Power Breaker Switch IN IN OUT MADE IN USA NO USER SERVICEABLE PARTS INSIDE KRELL INDUSTRIES, INC. 45 CONNAIR ROAD ORANGE, CT 06477-3650 USA EVOLUTI[...]

  • Page 21

    17 Figure 3 Evolution One Amplifier Chassis T op 17 Amplifier Binding Posts 22 Amplifier Fr ont 17 22 continue d[...]

  • Page 22

    18 ( SECTION THREE: Anatomy of an Amplifier continued) Figure 4 Evolution One Power Supply Chassis T op 23 Locating Pin 24 Power Connector 25 Power Supply Fr ont 23 24 23 25[...]

  • Page 23

    19 SECTION FOUR Connecting the Evolution One to Y our System This section describes Evolution One amplifier connections and outlines remote control o ptions. Each Evolution One has a CAST 4-pin connector , a balanced input via an XLR connector , a 12 V olt trigger In/Out connection, and an RC-5 in put o n the back panel. CAST Connections Krell r ec[...]

  • Page 24

    ( SECTION FOUR: Connections, continued ) 20 3. Connect the Krell CAST cables fr om your CAST -enabled preamplifier or source component to the left and right Kr ell CAST 4-pin bayonet inputs (16) on the amplifier (1) back panel. For balanced operation, connect the intercon- nect cable from your pr eamplifier to the balanced XLR input (15) on the amp[...]

  • Page 25

    21 Remote Contr ol Options The Evolution One amplifier is compatible with the remote contr ols included with the Krell Evolution T wo preamplifier , other Kr ell preamplifiers or pr eamplifier/ processors, and it is compatible with the Universal Kr ell T ouch Screen Remote. Please contact your authorized Krell dealer , distributor , or Krell, if yo[...]

  • Page 26

    Amplifier Operation Evolution One amplifiers are easy to operate. However , it is important to exer- cise care during operation due to the enormous power output of each amplifier . Switching between active sources (such as a CD player or a r ecording device) without muting the preamplifier output, or bumping or miscuing a sour ce can generate lar g[...]

  • Page 27

    23 3. Press the power button (3), located underneath the far left edge of the amplifier chassis front panel. The power/stand-by LEDs (4) on the amplifier and power supply chassis illuminate in blue. The backlight (5) and the meter scale (6) on the amplifier chassis illuminate in blue. Y ou may now switch between CAST and balanced operation. For mor[...]

  • Page 28

    Adjusting Power Meter Modes The Evolution One amplifier uses micropr ocessors to monitor RMS output voltage and current signals. This information is output to a custom fr ont panel power meter (6) (7), which displays an accurate power measurement for the selected meter range on the power meter scale (6). The power meter has 4 modes of opera- tion a[...]

  • Page 29

    Amplifier Car e An Evolution One amplifier is capable of enormous power output, and it is impor- tant to exercise car e during system operation. Avoid an y a cti on tha t c an g ene rat e lar ge transient signals. Always mute the prea mpl ifi er out put be for e sw itc hin g between active sources or cuing an LP . Do not change inputs to the amplif[...]

  • Page 30

    Amplifier T r oubleshooting System Pr otection Each Evolution One amplifier has a built-in DC monitor that continuously moni- tors the audio signal at the input, as well as other sophisticated protection cir- cuits that monitor other areas of the topology , in order to safeguard the amplifier . This circuitry constantly evaluates the operation of t[...]

  • Page 31

    Diagnostic Codes Possible Condition Course of Action 1 flash, pause, 2 flashes, Amplifier is over Allow the amplifier repeat; then the amplifier temperature to cool. When the LEDs reverts to stand-by mode stop flashing, the ampli- fier has cooled down. flash, pause, 5 flashes, Short cir cuit Check all connections repeat; then the amplifier on outpu[...]

  • Page 32

    28 W arranty Each Evolution Series amplifier has a limited warranty of five years for parts and lab or on ci rc ui try . Should this pr oduct fail to perform at any time during the warran- ty , Kr ell w ill r epa ir it at no cost to the owner , except as set forth in th is wa rranty . This warranty does not apply to damage caused by acts of God or [...]

  • Page 33

    29 Krell will pay r eturn freight to the U .S . A .-based freight forwar der of your choice. Freight and other char ges to ship the unit from the freight forwar der to you are also your responsibility . Krell is not r esponsible for any damage incurred in transit. Kr ell will file claims for damages as necessary for units damaged in transit to the [...]

  • Page 34

    Retur n Authorization Pr ocedur e 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 component 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 at: http[...]

  • Page 35

    Specifications Frequency r esponse 20 Hz to 20 kHz ±0.05 dB 0.6 Hz to 220 kHz +0, –3 dB Signal-to-noise ratio 118 dB, “A”-weighted Gain 25.8 dB T otal harmonic distortion <0.01% at 1 kHz, at 450 W , 8 Ohms <0.1% at 20 kHz, at 450 W , 8 Ohms Input impedance Balanced: 100 kHz CAST : 50 Hz Input sensitivity Balanced: 3.08 V RMS CAST : 3.0[...]