Krell Industries MASTER REFERENCE SUBWOOFER Revolutionary Krell Cast Technology, Basics of Cast

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(SECTION ONE: About Krell continued)

Revolutionary Krell CAST Technology

The Master Reference Subwoofer is designed with Current Audio Signal Transmission circuit technology, termed CAST. This circuitry is a revolutionary method of connect- ing analog audio components for unparalleled sonic performance. The innovative use of the new Krell CAST in combination with existing Krell Current Mode technology enables you to create entire CAST systems that reproduce music with incredible range, tonality, and precision.

The Traditional Audio System and Voltage Signal Transmission

Signal is transmitted in the voltage domain between two components in a traditional audio system. Each component is a discrete entity displaying unique characteristics that affect the musical signal independently. Each component is unaware of the other components in the system. The cables that connect the components also have their own electrical characteristics that affect the sonic presentation of the audio system.

A New Approach: Current Audio Signal Transmission

CAST circuitry recognizes signal transmitted between each component in the cur- rent domain instead of the voltage domain. CAST transmission unifies individual components and their interconnects into an electrically linked whole. The sonic presentation of the entire system remains intact.

The Basics of CAST

Here’s how a CAST audio system works with the Master Reference Subwoofer. Each CAST source amplifies current internally, using Krell Current Mode circuitry. CAST circuitry then outputs this current signal. When the signal is received by a CAST input on a Master Reference Subwoofer, Krell Current Mode circuitry again manages the signal until the signal reaches the loudspeaker. An entire CAST system behaves as if it is one component because it maintains the musical signal in the current domain from beginning to end. Anomalies of signal transmission between components are eliminated. Cable impedances and their effects on the transmitted signal are non-existent.

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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 Revolutionary Krell Cast Technology Traditional Audio System and Voltage Signal TransmissionNew Approach Current Audio Signal Transmission Basics of CastCast Cables Cast and Krell Current Mode CombinedBest Musical Performance Programmable Electronic Crossover Ensuring Maximum PerformanceInnovative Subwoofer Technology and Design Krell Active Motion ControlEnclosure DriversKrell Core Technologies Krell Cast and Krell Current ModeKrell Proprietary Output Devices Totally Balanced Operation Section ONE About Krell Totally Balanced Operation Definition of Terms ConfigurationsInputs and Outputs Operation TechnologyPage Unpacking Unpacking and PlacementTo Unpack the Master Reference Subwoofer To Remove the Subwoofer from the Packing Crate Master Reference Subwoofer Placement Options Placement AC Power GuidelinesFeatures Front Panel DescriptionStand-by LED Power ButtonPower LED Front Panel DisplayPower Master Reference Subwoofer Back Panel Description PowerBack Panel Remote Connections 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 OverviewStep I. Choose the Connections Connections and ConfigurationsCast and Balanced Connections Default Menu Functions Switching Between Cast and Balanced InputsFactory Defaults To Connect the SubwooferPage To Activate Cast Inputs When to Use LFE Only Option Choosing Stereo, LFE, or Stereo/LFESelect the Low-pass Filter Step III. Configure the Programmable Electronic CrossoverAdjust the Low-pass Filter Parameters Select the Low-pass Filter ProfileSelect the High-pass Filter Adjust the High-pass Filter ParametersSelect the High-pass Filter Profile Adjust the High-pass Filter Step IV. Match the High-pass and Low-pass Filter LevelsAdjust the Low-pass Filter Step VI. Saving Your Settings to Presets Step V. Select the PhaseTo End Noise Generation Recalling Presets Operation Steps for Subwoofer Operation followSubwoofer Care System ProtectionIf You Wish to Turn Your System Off Optional Connections Connecting Components Through Krell LinkKrell Link Krell Link Operation RS-232 VDC 12 V TriggerAC Mains Menu Optional ConfigurationsLED 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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