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Krell Industries MASTER REFERENCE SUBWOOFER manual

Models: MASTER REFERENCE SUBWOOFER

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From the first Krell product — the KSA-100 — to the present, Dan D’Agostino has continually “pushed the envelope” of performance in his search for greater amplifier power and now, subwoofer power. His exploration of technologies, driven by his never-ending quest to elevate the standard of excellence, has resulted in break- through audio designs. Over the years, the Krell line of power amplifiers, including benchmark products such as the KRS -100, KRS -200, and the Audio Standard models, has established a legacy of unparalleled sonic performance. The Master Reference Subwoofer brings that level of performance to the low frequency range.

From the first Krell product — the KSA-100 — to the present, Dan D’Agostino has continually “pushed the envelope” of performance in his search for greater amplifier power and now, subwoofer power. His exploration of technologies, driven by his never-ending quest to elevate the standard of excellence, has resulted in break- through audio designs. Over the years, the Krell line of power amplifiers, including benchmark products such as the KRS -100, KRS -200, and the Audio Standard models, has established a legacy of unparalleled sonic performance. The Master Reference Subwoofer brings that level of performance to the low frequency range.

Dan D’Agostino remains committed to the development of new designs and tech- nologies. And the Krell legacy will continue to evolve with products that deliver innovative engineering, perfection in build quality, and outstanding audio performance.

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Krell Industries MASTER REFERENCE SUBWOOFER manual

Contents

M R S M A S T E R R E F E R E N C E S U B W O O F E RO W N E R ’ S R E F E R E N C E WARNINGS Master Reference Subwoofer Owner’s ReferenceSECTION THREE Features, pages SECTION TWO Unpacking and Placement, pagesOverview SECTION ONE About Krell, pagesWARRANTY, pages SECTION SEVEN Optional Configurations, pagesRETURN AUTHORIZATION PROCEDURE, page SECTION FIVE Operation, pagesFigure 1, page List of IllustrationsFigure 2, page Figure 3, pagePage Dear Audio Enthusiast A Letter from Dan D’AgostinoSincerely Daniel D’Agostino Chief Executive OfficerThe Krell Legacy About KrellSECTION ONE for workmanship, style, and performance.”From the first Krell product - the KSA-100- to the present, Dan D’Agostino has continually “pushed the envelope” of performance in his search for greater amplifier power and now, subwoofer power. His exploration of technologies, driven by his never-endingquest to elevate the standard of excellence, has resulted in break- through audio designs. Over the years, the Krell line of power amplifiers, including benchmark products such as the KRS -100,KRS -200,and the Audio Standard models, has established a legacy of unparalleled sonic performance. The Master Reference Subwoofer brings that level of performance to the low frequency range A New Approach Current Audio Signal Transmission Revolutionary Krell CAST TechnologyThe Basics of CAST CAST and Krell Current Mode Combined CAST CablesThe Best Musical Performance Innovative Subwoofer Technology and Design Ensuring Maximum PerformanceProgrammable Electronic Crossover Krell Active Motion ControlDrivers EnclosureKrell Core Technologies Krell CAST and Krell Current ModeKrell Proprietary Output Devices Totally Balanced Operation Totally Balanced Operation continued SECTION ONE About Krell continuedConfigurations Definition of TermsInputs and Outputs Operation TechnologyKrell Active Motion Control Krell Current Mode A proprietary Krell circuit topology in which the audio gain stages operate in the current domain. Krell Current Mode provides speed and bandwidth performance that is not possible with less sophisticated voltage designs Unpacking Unpacking and PlacementTo Unpack the Master Reference Subwoofer SECTION TWOTo Remove the Subwoofer from the Packing Crate 4 people needed1 person needed Scenario 1 Stereo 3Master Reference SubwooferScenario 2 Home Theater, Rear Projection Scenario 3 Home Theater, Front ProjectionAC Power Guidelines PlacementFront Panel Description FeaturesSECTION THREE See Figure2 Power LED 1 Power Button3 Stand-byLED 4 Front Panel DisplayBack Panel Remote Connections PowerInputs OutputsMaster Reference Subwoofer 6 Power Switch Power7 AC Input Specification 8 IEC Power Connector12 RC-5In Inputs13 RS-232 14 Left and Right CAST Inputs19 LFE Single-endedInput Outputs20 Left and Right CAST High-passOutputs 21 Left and Right Balanced High-passOutputsLevel Adjust Keys PowerOperation Keys Filter Selection KeysBattery Installation and Removal Remote Control Description26 Power Key Remote Control Functions28 Phase Key 29 Preset KeysMenu Keys Filter Selection Keys32 Unit Keys 33 All Keyquency setting Level Adjust Keys43 Adjust Up and Down Keys Filter Parameter KeysStep V. Select the Phase Connections and ConfigurationsStep VI. Saving Your Settings to Presets OverviewConnections and Configurations Step I. Choose the ConnectionsCAST and Balanced Connections Factory Defaults Switching Between CAST and Balanced InputsDefault Menu Functions A. To Connect the Subwoofer18or the single-endedLFE input 19 on the subwoofer back panel to the subwoofer output of your processor B. To Activate CAST Inputs C. Choosing Stereo, LFE, or Stereo/LFE D. When to Use LFE Only OptionA. Select the Low-passFilter C. Adjust the Low-passFilter ParametersB. Select the Low-passFilter Profile 1.Low-passFilter SlopeD. Select the High-passFilter F. Adjust the High-passFilter ParametersE. Select the High-passFilter Profile 3.Low-passFilter LevelA. Adjust the High-passFilter B. Adjust the Low-passFilter Step V. Select the Phase Step VI. Saving Your Settings to PresetsC. To End Noise Generation To save a setting configuration to a preset Recalling Presets1.Press the preset key 1.Press the save keyOperation The Steps for Subwoofer Operation followSECTION FIVE System Protection Subwoofer CareIf You Wish to Turn Your System Off Optional Connections Connecting Components Through Krell LinkKrell Link SECTION SIXKrell Link Operation RS-232 12 VDC 12 V TriggerSECTION SIX Optional Connections continued AC Mains Menu Optional ConfigurationsLED Menu SECTION SEVENUnit ID Menu Mute MenuExit Menu This option allows you to exit the menu mode2.Press the enter key 38. You exit the menu mode Warranty Page Return Authorization Procedure To contact the Krell Service Departmentserve you better