Krell Industries MASTER REFERENCE SUBWOOFER manual Placement, AC Power Guidelines

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Placement

Before you install the Master Reference Subwoofer, review the following guidelines to choose the location for the subwoofer. This facilitates a clean, trouble-free installation.

Make sure the Master Reference Subwoofer, in addition to other items (amplifiers, other system components, furniture) in the listening room, does not exceed the listening room’s maximum floor load.

Each Master Reference Subwoofer requires at least two inches (5 cm) of clearance on each side and in front, and at least two inches (5 cm) of clearance above and to the rear of the subwoofer for adequate ventilation.

IMPORTANT

For optimum sound quality, place your subwoofer at least one foot away from any wall.

Your Master Reference Subwoofer can operate from a number of positions in your listening room. The range of control provided by the programmable electronic crossover, plus the subwoofer size and construction, help ensure excellent perfor- mance from nearly any location. Figure 1, on page 16, illustrates three possible placement options, which are described below.

Option 1: Stereo. Place the Master Reference Subwoofer midway between the left

and right loudspeakers.

Option 2: Home Theater, Rear Projection. Place the Master Reference Subwoofer between the center and left front or between the center and right front loudspeakers, preferably one foot from any wall.

Option 3: Home Theater, Front Projection. Place the Master Reference Subwoofer midway between the left and right front loudspeakers and between the center speaker and the screen.

If you employ Krell CAST technology, you can use CAST interconnect cables of any length. Try to keep cable length to a minimum if you select single-ended operation.

AC Power Guidelines

The Master Reference Subwoofer should be operated from a dedicated AC power line rated at a minimum of 20 amps.

Please contact your authorized Krell dealer, distributor, or Krell before using any devices to alter or stabilize the AC power for the Master Reference Subwoofer.

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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 TechnologyBest Musical Performance Cast and Krell Current Mode CombinedCast Cables Krell Active Motion Control Ensuring Maximum PerformanceInnovative Subwoofer Technology and Design Programmable Electronic CrossoverDrivers EnclosureKrell 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 Technology OperationPage To Unpack the Master Reference Subwoofer Unpacking and PlacementUnpacking 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 Back Panel Remote Connections PowerBack Panel Description 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 ConfigurationsCast and Balanced Connections Connections and ConfigurationsStep I. Choose the 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 FilterSelect the High-pass Filter Profile Adjust the High-pass Filter ParametersSelect the High-pass Filter Step IV. Match the High-pass and Low-pass Filter Levels Adjust the High-pass FilterAdjust the Low-pass Filter To End Noise Generation Step V. Select the PhaseStep VI. Saving Your Settings to Presets Recalling Presets Steps for Subwoofer Operation follow OperationIf You Wish to Turn Your System Off System ProtectionSubwoofer Care Krell Link Connecting Components Through Krell LinkOptional Connections Krell Link Operation VDC 12 V Trigger RS-232LED Menu Optional ConfigurationsAC Mains 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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