Krell Industries Evolution 600, 900, 400 manual Placement, AC Power Guidelines

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(SECTION TWO: Unpacking and Placement continued)

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-free installation.

Place the amplifier on a firm, level surface, away from excessive heat, humidity, or moisture. Each Evolution amplifier requires at least two inches (5 cm) of clearance on each side and at least eight inches (20 cm) of clearance above the component to provide adequate ventilation.

If you place the amplifier in a closed cabinet, you may need to modify shelf spac- ing or use small fans to increase ventilation. When the front and back of a cabinet are open, the air space between the chassis and shelf must be unobstructed.

Place the amplifier(s) as close to the loudspeakers as possible. While Evolution CAST technology permits long interconnect cable lengths, keep loudspeaker cable lengths to a minimum.

AC Power Guidelines

The Evolution amplifier requires a dedicated AC circuit rated at a minimum of 20 amps. Do not use extension cords, multiple AC adapters, or AC power strips.

Note

Do not operate the Evolution amplifiers with any device designed to alter or condition

AC power.

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Contents Evolution Important Safety Instructions Contents List of Illustrations Letter from Dan D’Agostino Evolution Amplifier Features and Technology FeaturesVoltage Signal Transmission Traditional Audio System How Cast and Krell Current Mode InteractRevolutionary Krell Cast Technology Cast BasicsCast Cable Construction Evolution CastBest Musical Performance Definition of Terms Inputs and OutputsOperation Krell Current Mode TechnologyActive Cascode Topology Unpacking and Placement Opening the Evolution Amplifier Shipping CartonPlacement AC Power GuidelinesAnatomy of an Evolution Amplifier Evolution Amplifier Front Panel Evolution 402 shownPower Power ButtonPower Status Indicator Front Panel DescriptionEvolution 302 Stereo Amplifier Back Panel Evolution 402 Stereo Amplifier Back Panel Evolution 403 Multi-channel Amplifier Back Panel Evolution 400 Monaural Amplifier Back Panel Evolution Monaural Amplifier Back Panel Evolution 600 shown Back Panel Description OutputsInputs IEC Power Cord Receptacle Power Breaker SwitchRemote Connections VDC In/Out 12 V TriggerConnecting an Evolution Amplifier to Your System XLR Pin ConfigurationCast Connections Balanced ConnectionsEvolution DC Protection Circuitry/Using Tube Preamplifiers Connection StepsSection Five Troubleshooting System Noise How to Evaluate Amplifier OperationError Codes Diagnostic Code Possible Condition Course of ActionQuestions and Answers Warranty Page Return Authorization Procedure How to Expedite ServiceTo contact the Krell Service Department How to Return a ProductSpecifications Frequency ResponseRms at 4 Ohms Hz to 20 kHz +0, -0.18 dB Hz to 120 kHz +0, -3 dB WNER’S Reference Krell INDUSTRIES, INC

400, 900, Evolution 600 specifications

Krell Industries is a renowned namesake in the high-end audio and home theater equipment market, revered for its cutting-edge engineering and exceptional performance. Among its standout offerings are the Krell 900, Evolution 600, and Evolution 400, each designed for audiophiles seeking to elevate their listening experience.

The Krell 900 is a powerhouse amplifier that marries high-output power with a sophisticated design. Featuring Class A/B amplification, it operates with minimal distortion, ensuring that sound quality remains pure even at high volume levels. The unit boasts a massive power supply that allows it to handle a wide variety of speaker impedances effortlessly. With its robust build and a sleek, minimalist aesthetic, the Krell 900 is not only a technical marvel but also a visual centerpiece in any audio setup.

On the other hand, the Evolution 600 represents Krell’s commitment to harnessing the latest technology to achieve superior sound. This amplifier utilizes Krell’s proprietary current mode topology, which optimizes power delivery and offers instantaneous response to dynamic audio signals. The Evolution 600 is equipped with advanced thermal management systems that keep the unit cool during extended use, ensuring reliability and longevity. Furthermore, the elegant design complements any home decor, making it a stylish and functional addition to high-end audio environments.

The Evolution 400, while slightly smaller, exemplifies Krell’s hallmark of uncompromising sound quality. It integrates many of the same high-end technologies found in its larger counterparts but in a more compact form. With a focus on delivering dynamic range and clarity, the Evolution 400 is ideal for both music and home theater applications. Advanced digital signal processing, combined with analog audio circuitry, ensures that every note and detail is captured with impeccable accuracy.

All three models prioritize connectivity and user experience, featuring a range of inputs, including balanced XLR and unbalanced RCA options, allowing seamless integration into various audio systems. Each amplifier emphasizes robust build quality, featuring heavy-duty chassis and meticulously designed circuit layouts to minimize interference and signal degradation.

In conclusion, Krell Industries’ 900, Evolution 600, and Evolution 400 amplifiers exemplify the pinnacle of audio craftsmanship. They combine innovative technologies, premium components, and stunning aesthetics, making them the perfect choice for discerning audio enthusiasts who demand nothing but the best in sound reproduction.