Krell Industries Evolution One Amplifier Operation, Powering On, Powering Down, and Powering Off

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SECTION FIVE

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 recording device) without muting the preamplifier output, or bumping or miscuing a source can generate large transients at low frequencies. Evolution One amplifiers may gen- erate enough power with these transients to damage loudspeakers.

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. Because of their tremendous reserves of clean power, Evolution One amplifiers can safely drive speakers to higher sound pressure levels than other amplifiers. Always lower the volume level at the first sign of loudspeaker distress.

Powering On, Powering Down, and Powering Off

When powering on any system, turn on amplifiers last. When powering down, turn off amplifiers first. Krell recommends leaving the Evolution One amplifier pow- ered down (in the stand-by mode) between listening sessions. Turn the amplifier off using the power breaker switch (21) on the back panel of the power supply chassis (2), when the system is not being used for an extended period of time.

The procedure for amplifier operation follows:

1.Insert the AC power cord plug into the dedicated wall outlet.

2.Move the power breaker switch to the up position, to place the amplifier in stand-by mode. The power/stand-by LEDs (4) on the amplifier and power sup- ply chassis illuminate in red.

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Contents Evolution Evolution One Monaural Power Amplifier Owner’s Reference Contents List of Illustrations Letter from Dan D’Agostino Letter from Dan D’Agostino About Krell Krell LegacySection ONE About Krell Revolutionary Krell Cast Technology Voltage Signal Transmission Traditional Audio SystemHow Cast and Krell Current Mode Interact Cast BasicsBest Musical Performance Cast Cable ConstructionEvolution Cast Ensuring Maximum Performance Core TechnologiesImpedance Advantage Evolution Bias Control SystemsSeparate Power Supplies Are Quiet and Powerful Operation Definition of TermsInputs and Outputs Operational Mode TechnologyTo Remove the Chassis from the Shipping Carton Unpacking and PlacementOpening the Amplifier Shipping Carton People needed Placement AC Power GuidelinesThis section describes Evolution One features and benefits Anatomy of an AmplifierEvolution One Amplifier and Power Supply Chassis Back Panels Evolution One Amplifier Chassis Top Evolution One Power Supply Chassis Top Balanced Connections Connecting the Evolution One to Your SystemCast Connections Cable Connection StepsDC Protection Circuitry / Using a Tube Preamplifier Turn to Amplifier Operation, onVolt Trigger Remote Control OptionsRC-5 Remote Control Powering On, Powering Down, and Powering Off Amplifier OperationSwitching Between Cast and Balanced Inputs Turning Off the Lights on the Amplifier Channel Front Panel Adjusting Power Meter ModesPower Meter Range and Power Meter Wand Action Amplifier Care Amplifier Troubleshooting System ProtectionDiagnostic Codes Possible Condition Course of Action Warranty Page Return Authorization Procedure To contact the Krell Service DepartmentSpecifications

Evolution One specifications

Krell Industries is synonymous with high-fidelity audio and innovative engineering, showcasing their prowess in speaker design with the Evolution One. This speaker embodies the cutting-edge technology and striking aesthetics that Krell is recognized for in the audiophile community.

The Evolution One features a unique dual-woofer configuration, delivering powerful bass response without distortion. Each woofer is meticulously crafted from advanced composite materials, ensuring that the sound remains accurate and dynamic, even at high volumes. This design aligns perfectly with Krell's dedication to reproducing music with the utmost authenticity.

At the heart of the Evolution One is Krell's proprietary CAST (Current Mode Amplification) technology. This innovation sets Krell apart from competitors by allowing the signal to flow through a path that maintains the purity of the audio signal. By operating in current mode rather than voltage mode, CAST drastically reduces the impact of circuit interference that often plagues traditional audio systems. The result is a level of transparency and low distortion that appeals to even the most discerning audiophiles.

The speaker also incorporates advanced crossover technology, which seamlessly integrates the woofers and tweeter. Krell employs a fourth-order Linkwitz-Riley crossover to ensure that the different drivers work in perfect harmony. This feature aids in achieving a balanced and cohesive soundstage, enhancing the listening experience across various musical genres.

Visually, the Evolution One is a statement piece. Its sleek, modern design is complemented by a high-gloss finish, ensuring it not only sounds exceptional but also serves as an elegant addition to any audio setup. The robust cabinet construction eliminates unwanted vibrations, further enhancing sound clarity.

Moreover, the Evolution One is equipped with advanced bi-wiring and bi-amping options, allowing audiophiles to optimize their setups based on personal preferences and system requirements. This flexibility makes the Evolution One an adaptable choice for those looking to refine their audio systems further.

In summary, the Krell Industries Evolution One is a culmination of innovative technology, premium materials, and exquisite design. With features such as dual-woofer configurations, CAST technology, and advanced crossover design, it stands as a testament to Krell's commitment to delivering high-fidelity audio experiences that resonate with both casual listeners and dedicated audiophiles alike.
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