Manuel d'utilisation / d'entretien du produit 400 du fabricant Krell Industries
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OWNER’S REFERENCE EVOLUTION EVOLUTION AMPLIFIERS 302 AND 402 STEREO 403 THREE-CHANNEL 400, 600, AND 900 MONAURAL.
Evolution 302, 402, 403, 400, 600 and 900 Power Amplifiers Owner’ s Reference, v 08.0 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).
3 Contents List of Illustrations, page 4 A Letter from Dan D’Agostino, page 5 SECTION ONE: Evolution Amplifier Features and T echnology , page 6 Featur es, Revolutionar y Krell CAST T echnology , De.
4 List of Illustrations Figure 1, page 1 3 Evolution Amplifier Front Panel Figure 2, page 1 5 Evolution 302 Stereo Back Panel Figure 3, page 1 6 Evolution 402 Stereo Amplifier Back Panel Figur e 4, pa.
A Letter fr om Dan D’Agostino Dear Audio Enthusiast, Thank you for your purchase of a Kr ell Evolution Series amplifier . Evolution Series amplifiers continue my quest for amplifiers that deliver absolute truth in music repr oduction.
6 SECTION ONE Evolution Amplifier Featur es and T echnology This section describes the innovative features and technology of the Evolution Series amplifiers, and defines CAST and other key terms used in this refer ence.
7 Revolutionary Kr ell CAST T echnology Current Audio Signal T ransmission, termed CAST , is a r evolutionary method of connecting analog audio components for unparalleled sonic performance.
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.
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.
10 T echnology Active Cascode T opology A unique circuit technique that minimizes distortion by applying fr om 2 to 3 times more active devices to each gain stage ther eby reducing the load on individual devices and improving cir cuit-wide linearity .
11 Unpacking and Placement This section describes the procedur es for safely unpacking and placing your Evolution amplifier . The amplifier and accessories are shipped in 1 carton. The dimensions of the amplifier are shown in the specifications section starting on page 31.
12 Placement Before you install an Evolution amplifier into your system, please follow the guide- lines in this section to select a location for your component. This will facilitate a clean, trouble-fr ee installation. Place the amplifier on a firm, level surface, away from excessive heat, humidity , or moisture.
13 SECTION THREE Anatomy of an Evolution Amplifier This section describes Evolution amplifier functions. Figure 1 Evolution Amplifier Front Panel ( Evolution 402 shown ) 1 Power Button 2 Power Status .
14 Fr ont Panel Description See Figure 1 on the previous page Evolution amplifier front panel functions ar e described below: Power 1 Power Button Press this button to place the Evolution amplifier in operational mode. 2 Power Status Indicator The power status indicator is illuminated in red when the amplifier is in stand- by mode.
15 Figure 2 Evolution 302 Stereo Amplifier Back Panel 3 Loudspeaker Binding Posts 4 CAST Inputs 5 Single-ended Inputs 6 Balanced Inputs 7 12 VDC Out/In (12 V T rigger) 8 Backlight Control 9 IEC Power .
16 Figure 3 Evolution 402 Stereo Amplifier Back Panel 3 Loudspeaker Binding Posts 4 CAST Inputs 5 Single-ended Inputs 6 Balanced Inputs 7 12 VDC Out/In (12 V T rigger) 8 Backlight Control 9 IEC Power .
17 Figure 4 Evolution 403 Multi-channel Amplifier Back Panel 3 Loudspeaker Binding Posts 4 CAST Inputs 5 Single-ended Inputs 6 Balanced Inputs 7 12 VDC Out/In (12 V T rigger) 8 Backlight Control 9 IEC.
18 Figure 5 Evolution 400 Monaural Amplifier Back Panel 3 Loudspeaker Binding Posts 4 CAST Input 5 Single-ended Input 6 Balanced Input 7 12 VDC Out/In (12 V T rigger) 8 Backlight Control 9 IEC Power C.
19 Figure 6 Evolution Monaural Amplifier Back Panel ( Evolution 600 shown ) 3 Loudspeaker Binding Posts 4 CAST Input 5 Single-ended Input 6 Balanced Input 7 12 VDC Out/In (12 V T rigger) 8 Backlight C.
20 Back Panel Description See Figures 2, 3, 4, 5, and 6 on the previous pages The amplifier back panel provides access to the input and output connections, 12 V trigger inputs and outputs, and the AC power connection and switch.
21 Remote Connections 7 12 VDC In/Out (12 V T rigger) The 12 V trigger allows you to turn the Evolution amplifier on or to stand-by from other components.
22 SECTION FOUR Connecting an Evolution Amplifier to Y our System This section describes Evolution amplifier connections. Each Evolution amplifier channel has a CAST 4-pin connector , a balanced input via an XLR connector , a single-ended RCA connector , and a pair of loudspeaker binding posts.
23 Evolution DC Pr otection Circuitry/Using T ube Pr eamplifiers The high DC output of tube preamplifiers may exceed the active DC pr otection circuitry of the Evolution amplifiers. Excessive DC level in a signal can damage amplifiers, loudspeakers, or both.
24 Evolution Amplifier Operation The Evolution amplifiers are easy to operate. IMPORT ANT When powering up any system, turn the amplifier on last. When powering down, turn it off first. This will prevent any turn-on and turn-off thumps in your loudspeakers.
25 T r oubleshooting System Noise AC grounding becomes critical when connecting high-performance audio compo- nents. 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 loud- speakers.
26 Err or Codes In the event of a problem, the power status indicator (2) will flash err or code(s) in red. Err ors are identified by a sequence of 3, 4, or 5 flashes. Ther e is a pause between codes, and in the case where ther e is only one error code, the same code is repeated.
27 Questions and Answers Q. Should I leave my Evolution amplifier on at all times? A. For maximum amplifier performance, leave the back panel power breaker switch on at all times. This places the amplifier in stand-by mode. Evolution amplifiers are designed to be power ed on and off fr om stand-by , using the front panel power button.
28 W arranty Krell pr oducts have a limited warra nty . Amplifiers, preamplifiers, preamp/pr ocessors, 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 .
29 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 . Return freight within the United States (U.
Retur n Authorization Pr ocedur e How to Expedite Service If you believe there is a pr oblem with your component, please contact your deal- er , distributor , or the Krell factory to discuss the problem before you return the component for repair .
Specifications Measurement Evolution 302 Ster eo Amplifier Evolution 402 Stereo Amplifier FREQUENCY RESPONSE 20 Hz to 20 kHz +0, –0.10 dB <0.5 Hz to 180 kHz +0, –3 dB 20 Hz to 20 kHz +0, –0.
32 ( Specifications continued) Measurement Evolution 403 3-channel Amplifier Evolution 400 Monaural Amplifier F REQUENCY RESPONSE 2 0 Hz to 20 kHz +0, –0.18 dB <0.5 Hz to 120 kHz +0, –3 dB S IGNAL-TO-NOISE RA TIO Wideband, unweighted, referr ed to full power output “A” weighted >106 dB >116 dB GAIN 25.
33 ( Specifications continued) Measurement Evolution 600 Monaural Amplifier Evolution 900 Monaural Amplifier F REQUENCY RESPONSE 2 0 Hz to 20 kHz +0, –0.
O WNER’S REFERENCE V08.0 KRELL INDUSTRIES, INC. 45 CONNAIR ROAD ORANGE, CT 06477-3650 USA TELL: 203-298-4000 • F AX: 203-891-2028 E-MAIL: sales@krellonline.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Krell Industries 400 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Krell Industries 400 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Krell Industries 400, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Krell Industries 400 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Krell Industries 400, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Krell Industries 400.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Krell Industries 400. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Krell Industries 400 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
