Krell Industries MASTER REFERENCE SUBWOOFER manual About Krell, Krell Legacy

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SECTION ONE

About Krell

This section describes the Krell Legacy, Krell’s revolutionary CAST technology, and defines key terms used in this reference.

The Krell 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—an ongoing quest for excellence in music reproduction that drives equipment manufacturers to strive for the absolute in design and performance. With a keen understanding of this passionate drive, Krell Industries, Inc. was founded in 1980.

Over the past two decades, Krell has earned a distinguished reputation for engineering innovation and product excellence. The company’s history is replete with product introductions that have deeply impacted the high-end audio industry. The most discriminating audiophiles and product reviewers have consistently recognized Krell components for standard-setting performance.

The Master Reference Subwoofer represents the next era at Krell Industries, Inc.— the era of loudspeaker design and manufacture—which will join the ongoing legacy of Krell amplifiers. For three decades, Krell C.E.O. Dan D’Agostino has built amplifiers legendary for their ability to deliver optimum performance from any loudspeaker.

This experience has yielded invaluable insights about the nature of loudspeaker design, which Krell has characteristically incorporated into its first subwoofer. The Master Reference Subwoofer is a full-fledged, reference caliber subwoofer that features a programmable crossover and proprietary circuit technology not found in any other subwoofer. The result is a subwoofer that raises your music and home theater systems to new levels of tonal quality, precision, and accuracy.

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Contents S T E R R E F E R E N C E S U B W O O F E R Master Reference Subwoofer Owner’s Reference Overview Section ONE About Krell, pagesSection Five Operation, pages 42 List of Illustrations Page Letter from Dan D’Agostino About Krell Krell LegacyPage Traditional Audio System and Voltage Signal Transmission New Approach Current Audio Signal TransmissionRevolutionary Krell Cast Technology Basics of CastBest Musical Performance Cast and Krell Current Mode CombinedCast Cables Ensuring Maximum Performance Innovative Subwoofer Technology and DesignProgrammable Electronic Crossover Krell Active Motion ControlEnclosure DriversKrell Proprietary Output Devices Krell Cast and Krell Current ModeKrell Core Technologies Totally Balanced Operation Section ONE About Krell Totally Balanced Operation Inputs and Outputs ConfigurationsDefinition of Terms Operation TechnologyPage To Unpack the Master Reference Subwoofer Unpacking and PlacementUnpacking To Remove the Subwoofer from the Packing Crate Master Reference Subwoofer Placement Options Placement AC Power GuidelinesFeatures Front Panel DescriptionPower Button Power LEDStand-by LED Front Panel DisplayPower Master Reference Subwoofer Back Panel Remote Connections PowerBack Panel Description Inputs Outputs Operation Keys Remote Control Description Battery Installation and RemovalRemote Control Functions Operation KeysFilter Selection Keys Menu KeysLevel Adjust Keys Filter Parameter KeysConnections and Configurations OverviewCast and Balanced Connections Connections and ConfigurationsStep I. Choose the Connections Switching Between Cast and Balanced Inputs Factory DefaultsDefault Menu Functions To Connect the SubwooferPage To Activate Cast Inputs When to Use LFE Only Option Choosing Stereo, LFE, or Stereo/LFEStep III. Configure the Programmable Electronic Crossover Adjust the Low-pass Filter ParametersSelect the Low-pass Filter Select the Low-pass Filter ProfileSelect the High-pass Filter Profile Adjust the High-pass Filter ParametersSelect the High-pass Filter Adjust the High-pass Filter Step IV. Match the High-pass and Low-pass Filter LevelsAdjust the Low-pass Filter To End Noise Generation Step V. Select the PhaseStep VI. Saving Your Settings to Presets Recalling Presets Operation Steps for Subwoofer Operation followIf You Wish to Turn Your System Off System ProtectionSubwoofer Care Krell Link Connecting Components Through Krell LinkOptional Connections Krell Link Operation RS-232 VDC 12 V TriggerLED Menu Optional ConfigurationsAC Mains Menu Mute Menu Unit ID MenuExit Menu Warranty Page Return Authorization Procedure To contact the Krell Service Department

MASTER REFERENCE SUBWOOFER specifications

Krell Industries has long been synonymous with high-end audio equipment, and their Master Reference Subwoofer is a testament to this legacy of excellence. Designed to deliver an unparalleled listening experience, the Master Reference Subwoofer is engineered to provide deep, powerful bass without compromising clarity or detail.

One of the standout features of the Master Reference Subwoofer is its robust construction. The cabinet is made from high-density materials that minimize resonances and vibrations, ensuring that the purity of the audio signal is maintained. This attention to detail is crucial, as unwanted vibrations can color the sound and detract from the listening experience. The design also includes internal bracing that further enhances stiffness, resulting in a more controlled bass response.

At the heart of the Master Reference Subwoofer is a custom-engineered driver, designed to handle the demands of high-powered audio. With a large diaphragm and a powerful motor system, this driver can reproduce lower frequencies with remarkable accuracy. The subwoofer utilizes a sophisticated suspension system that allows for greater travel while maintaining linearity, resulting in an impressive dynamic range. This means that whether you're listening to the subtle nuances of a classical piece or the thunderous explosions of an action movie, the Master Reference Subwoofer can handle it all with finesse.

Krell's proprietary technologies further enhance the performance of the Master Reference Subwoofer. The subwoofer features advanced digital signal processing (DSP) that allows for precise tuning and customization of the audio output. This ensures that the subwoofer can adapt to different room acoustics and individual preferences, resulting in optimal sound quality in any environment. Moreover, the Room EQ feature automatically analyzes the listening space and adjusts the output accordingly, providing an incredible level of personalization.

Connectivity options on the Master Reference Subwoofer are diverse and versatile, including XLR and RCA inputs, making it compatible with a wide range of audio systems. The intuitive interface allows users to easily navigate through various settings, making setup and adjustment a breeze.

In summary, the Krell Industries Master Reference Subwoofer showcases the company's commitment to audio excellence through its unmatched construction, innovative driver technology, and advanced digital processing capabilities. For audiophiles seeking a subwoofer that delivers not just deep bass, but also accuracy and control, the Master Reference Subwoofer stands out as a premier choice, elevating any listening experience to new heights.
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