Krell Industries Evolution One manual Specifications

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Specifications

Frequency response

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

Total 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: 3.08 mA RMS

Output power

450 W RMS at 8 Ohms

900 W RMS at 4 Ohms

1800 W RMS at 2 Ohms

Output voltage

170 V peak-to-peak

60 V RMS

Output current

57 A peak

Slew rate

100 V/us

Power consumption

Standby: 225 W

Idle: 300 W

Maximum: 3600 W

Inputs

1 balanced via XLR connector

1 CAST via 4-pin bayonet connector

Outputs

1 pair Krell binding posts

Dimensions

Amplifier chassis:

15.8in. W x 6.2 in. H x 21.5 in. D 40 cm W x 15.8 cm H x 54.7 cm D

Power supply chassis:

15.8in. W x 6.4 in. H x 20.5 in. D 40 cm W x 16.1 cm H x 52.2 cm D

Amplifier channel:

15.8in. W x 12.5 in. H x 21.5 in. D 40 cm W x 31.6 cm H x 54.7 cm D

Weight

Amplifier chassis:

Shipped: 70 lbs., 31.7 kg

Unit Only: 55 lbs., 24.9 kg

Power supply chassis:

Shipped: 110 lbs., 49.8 kg

Unit Only: 95 lbs., 43 kg

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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 Krell Legacy About KrellSection ONE About Krell Cast Basics Voltage Signal Transmission Traditional Audio SystemHow Cast and Krell Current Mode Interact Revolutionary Krell Cast TechnologyBest Musical Performance Cast Cable ConstructionEvolution Cast Core Technologies Ensuring Maximum PerformanceEvolution Bias Control Systems Impedance AdvantageSeparate Power Supplies Are Quiet and Powerful Operation Definition of TermsInputs and Outputs Technology Operational ModeTo Remove the Chassis from the Shipping Carton Unpacking and PlacementOpening the Amplifier Shipping Carton People needed AC Power Guidelines PlacementAnatomy of an Amplifier This section describes Evolution One features and benefitsEvolution One Amplifier and Power Supply Chassis Back Panels Evolution One Amplifier Chassis Top Evolution One Power Supply Chassis Top Cable Connection Steps Connecting the Evolution One to Your SystemCast Connections Balanced ConnectionsTurn to Amplifier Operation, on DC Protection Circuitry / Using a Tube PreamplifierVolt Trigger Remote Control OptionsRC-5 Remote Control Amplifier Operation Powering On, Powering Down, and Powering OffSwitching 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 System Protection Amplifier TroubleshootingDiagnostic Codes Possible Condition Course of Action Warranty Page To contact the Krell Service Department Return Authorization ProcedureSpecifications

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.