Krell Industries MASTER REFERENCE SUBWOOFER manual

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3.Connect the cables from the left and right Krell CAST 4-pin inputs (14) on the back panel to the left and right main preamplifier or processor outputs. For bal- anced or single-ended operation, connect the interconnect cables from either the left and right balanced (15) or the single-ended inputs (16) on the Master Reference Subwoofer back panel to your left and right preamplifier or processor outputs.

4.Connect the cable from the Krell CAST 4-pin LFE input (17) on the back panel to the sub(woofer) output of your processor. For balanced or single-ended operation, connect the interconnect cables from either the balanced LFE input

(18)or the single-ended LFE input (19) on the subwoofer back panel to the sub(woofer) output of your processor.

5.Connect the cables from the left and right Krell CAST 4-pin high-pass outputs

(20)on the back panel to the left and right CAST-equipped inputs of your power amplifier. For balanced or single-ended operation, connect the interconnect cables from either the left and right balanced high-pass outputs (21) or the left and right single-ended high-pass outputs (22) on the back panel to the left and right balanced or single-ended inputs of your power amplifier.

Notes

The Master Reference Subwoofer allows the connection of two independent preamplifier/source components to the CAST and either the balanced or the single-ended inputs. For example, you may want to connect two discrete front-end systems: Use the CAST input as the connection to a dedicated two-channel system in which the KPS 25sc Krell Playback System is the CAST source. Use the balanced input as the connection to a home theater system.

You cannot connect the balanced input and the single-ended input at the same time.

6.If you have more than one subwoofer, connect the cables from the left and right Krell CAST 4-pin by-pass outputs (23) on the back panel to the left and right CAST-equipped inputs on another subwoofer. For balanced or single- ended operation, connect the interconnect cables from either the left and right balanced by-pass outputs (24) or the left and right single-ended by-pass outputs (25) on the back panel to the left and right balanced or single-ended inputs of another subwoofer.

See Unit ID Menu, on page 48, for information on assigning ID numbers for controlling multiple subwoofers in a system.

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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 Section ONE About Krell, pages OverviewSection Five Operation, pages 42 List of Illustrations Page Letter from Dan D’Agostino Krell Legacy About KrellPage Basics of Cast Traditional Audio System and Voltage Signal TransmissionNew Approach Current Audio Signal Transmission Revolutionary Krell Cast TechnologyCast and Krell Current Mode Combined Cast CablesBest Musical Performance Krell Active Motion Control Ensuring Maximum PerformanceInnovative Subwoofer Technology and Design Programmable Electronic CrossoverDrivers EnclosureKrell 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 Technology OperationPage Unpacking and Placement UnpackingTo Unpack the Master Reference Subwoofer To Remove the Subwoofer from the Packing Crate Master Reference Subwoofer Placement Options AC Power Guidelines PlacementFront Panel Description FeaturesFront Panel Display Power ButtonPower LED Stand-by LEDPower Master Reference Subwoofer Power Back Panel DescriptionBack Panel Remote Connections Inputs Outputs Operation Keys Battery Installation and Removal Remote Control DescriptionOperation Keys Remote Control FunctionsMenu Keys Filter Selection KeysFilter Parameter Keys Level Adjust KeysOverview Connections and ConfigurationsConnections and Configurations Step I. Choose the ConnectionsCast and Balanced Connections To Connect the Subwoofer Switching Between Cast and Balanced InputsFactory Defaults Default Menu FunctionsPage To Activate Cast Inputs Choosing Stereo, LFE, or Stereo/LFE When to Use LFE Only OptionSelect the Low-pass Filter Profile Step III. Configure the Programmable Electronic CrossoverAdjust the Low-pass Filter Parameters Select the Low-pass FilterAdjust the High-pass Filter Parameters Select the High-pass FilterSelect the High-pass Filter Profile Step IV. Match the High-pass and Low-pass Filter Levels Adjust the High-pass FilterAdjust the Low-pass Filter Step V. Select the Phase Step VI. Saving Your Settings to PresetsTo End Noise Generation Recalling Presets Steps for Subwoofer Operation follow OperationSystem Protection Subwoofer CareIf You Wish to Turn Your System Off Connecting Components Through Krell Link Optional ConnectionsKrell Link Krell Link Operation VDC 12 V Trigger RS-232Optional Configurations AC Mains MenuLED Menu Unit ID Menu Mute MenuExit Menu Warranty Page To contact the Krell Service Department Return Authorization Procedure

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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