Krell Industries MASTER REFERENCE SUBWOOFER manual Ensuring Maximum Performance

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(SECTION ONE: About Krell continued)

Ensuring Maximum Performance

The function of the Master Reference Subwoofer is to reproduce, with unprecedented authority and fidelity, the lowest reaches of the audio spectrum, thereby extending the low frequency capabilities of even the finest music and home theater systems.

The Krell Master Reference Subwoofer sets a new standard in powered subwoofer design. At the heart of the Master Reference Subwoofer is its proprietary interface. This programmable electronic crossover provides unparalleled matching for subwoofer and system components and allows seamless integration with any loudspeaker configuration. Additional innovative technologies such as Active Motion Control are specifically designed to unleash the full power of the built-in Krell amplifier while assuring that the special characteristics of low frequency sound are meticulously reproduced. Innovative technology teamed with Krell’s outstanding core technology ensure maximum power, precision, and performance in the low frequency range.

Innovative Subwoofer Technology and Design

Programmable Electronic Crossover

The programmable electronic crossover is a design tour de force. It seamlessly matches the Master Reference Subwoofer to the characteristics of your system. You can select and adjust high-pass and low-pass filter profiles and parameters. Three filter profiles with unique response characteristics integrate the Master Reference Subwoofer with any loudspeaker and listening setup. Each filter profile includes parameters for frequency, slope, and level, allowing you to further fine-tune the subwoofer to your system. These adjustments are easy to select using the Master Reference Subwoofer’s step-by-step menu and remote control.

Krell Active Motion Control

The traditional approach to subwoofer design is to incorporate a standard servo circuit that uses feedback to control the drivers at higher output levels. Doing so effectively controls the drivers, but it can also dampen the musical dynamics, losing the visceral impact of the low frequency range.

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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 CastCast and Krell Current Mode Combined Cast CablesBest Musical Performance Ensuring Maximum Performance Innovative Subwoofer Technology and DesignProgrammable Electronic Crossover Krell Active Motion ControlEnclosure DriversKrell Cast and Krell Current Mode Krell Core TechnologiesKrell Proprietary Output Devices Totally Balanced Operation Section ONE About Krell Totally Balanced Operation Configurations Definition of TermsInputs and Outputs Operation TechnologyPage Unpacking and Placement UnpackingTo Unpack the Master Reference Subwoofer 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 Power Back Panel DescriptionBack 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 OverviewConnections and Configurations Step I. Choose the ConnectionsCast and Balanced 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 ProfileAdjust the High-pass Filter Parameters Select the High-pass FilterSelect 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 V. Select the Phase Step VI. Saving Your Settings to PresetsTo End Noise Generation Recalling Presets Operation Steps for Subwoofer Operation followSystem Protection Subwoofer CareIf You Wish to Turn Your System Off Connecting Components Through Krell Link Optional ConnectionsKrell Link Krell Link Operation RS-232 VDC 12 V TriggerOptional Configurations AC Mains MenuLED 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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