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Krell Industries MASTER REFERENCE SUBWOOFER manual Master Reference Subwoofer Owner’s Reference

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Master Reference Subwoofer Owner’s Reference, v00.1

Master Reference Subwoofer Owner’s Reference, v00.1

Krell Industries, Inc.

45 Connair Road

Orange, CT 06477-3650 USA

TEL 203-799-9954

FAX 203-891-2028

E-MAIL krell@krellonline.com

WEBSITE http://www.krellonline.com

This product complies with the EMC directive (89/336/EEC) and the low-voltage directive (73/23/EEC).

WARNINGS

Do not place flammable material above or beneath the subwoofer.

Before making connections to the subwoofer, ensure that the back panel power switch is in the down position. Make sure all cable terminations are of the highest quality, free from frayed ends, short circuits, or cold solder joints.

Connecting non-CAST components to CAST inputs or outputs can damage your equipment and void your warranty.

Do not attempt to change CAST cable terminations or CAST inputs or outputs to RCA or XLR connectors. It is electrically impossible to convert CAST input or output connections for balanced or single-ended voltage operation.

THERE ARE NO USER SERVICEABLE PARTS INSIDE THE MASTER REFERENCE SUBWOOFER.

Please contact Krell if you have any questions not addressed in this manual.

This product is manufactured in the United States of America. Krell® is a registered trademark of Krell Industries, Inc., and is restricted for use by Krell Industries, Inc., its subsidiaries, and authorized agents. Krell CAST™ is a patent pending of Krell Industries, Inc. Krell Active Motion Control™, Krell Current Mode™, and Krell Link™ are trademarks of Krell Industries, Inc. Manufactured under license from Dolby Laboratories. "Dolby," "Pro Logic," and the double-D symbol are trademarks of Dolby Laboratories. Confidential Unpublished Works. Copyright 1992–1997 Dolby Laboratories, Inc. All rights reserved. All other trademarks and tradenames are registered to their respective companies.

© 2000 by Krell Industries, Inc. All rights reserved	P/N 304372

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Krell Industries MASTER REFERENCE SUBWOOFER manual Master Reference Subwoofer Owner’s Reference, Warnings

Contents

O W N E R ’ S R E F E R E N C E M R SM A 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 WARNINGSOverview SECTION TWO Unpacking and Placement, pagesSECTION THREE Features, pages SECTION ONE About Krell, pagesRETURN AUTHORIZATION PROCEDURE, page SECTION SEVEN Optional Configurations, pagesWARRANTY, pages SECTION FIVE Operation, pagesFigure 2, page List of IllustrationsFigure 1, page Figure 3, pagePage Sincerely Daniel D’Agostino A Letter from Dan D’AgostinoDear Audio Enthusiast Chief Executive OfficerSECTION ONE About KrellThe Krell Legacy 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 The Basics of CAST A New Approach Current Audio Signal TransmissionRevolutionary Krell CAST Technology The Best Musical Performance CAST and Krell Current Mode CombinedCAST Cables Programmable Electronic Crossover Ensuring Maximum PerformanceInnovative Subwoofer Technology and Design Krell Active Motion ControlEnclosure DriversKrell Proprietary Output Devices Krell Core TechnologiesKrell CAST and Krell Current Mode Totally Balanced Operation SECTION ONE About Krell continued Totally Balanced Operation continuedInputs and Outputs ConfigurationsDefinition of Terms Krell Active Motion Control OperationTechnology 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 To Unpack the Master Reference Subwoofer Unpacking and PlacementUnpacking SECTION TWO1 person needed To Remove the Subwoofer from the Packing Crate4 people needed Scenario 2 Home Theater, Rear Projection 3Master Reference SubwooferScenario 1 Stereo Scenario 3 Home Theater, Front ProjectionPlacement AC Power GuidelinesSECTION THREE FeaturesFront Panel Description See Figure3 Stand-byLED 1 Power Button2 Power LED 4 Front Panel DisplayInputs PowerBack Panel Remote Connections OutputsMaster Reference Subwoofer 7 AC Input Specification Power6 Power Switch 8 IEC Power Connector13 RS-232 Inputs12 RC-5In 14 Left and Right CAST Inputs20 Left and Right CAST High-passOutputs Outputs19 LFE Single-endedInput 21 Left and Right Balanced High-passOutputsOperation Keys PowerLevel Adjust Keys Filter Selection KeysRemote Control Description Battery Installation and Removal28 Phase Key Remote Control Functions26 Power Key 29 Preset Keys32 Unit Keys Filter Selection KeysMenu Keys 33 All Key43 Adjust Up and Down Keys Level Adjust Keysquency setting Filter Parameter KeysStep VI. Saving Your Settings to Presets Connections and ConfigurationsStep V. Select the Phase OverviewCAST and Balanced Connections Connections and ConfigurationsStep I. Choose the Connections Default Menu Functions Switching Between CAST and Balanced InputsFactory Defaults 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 D. When to Use LFE Only Option C. Choosing Stereo, LFE, or Stereo/LFEB. Select the Low-passFilter Profile C. Adjust the Low-passFilter ParametersA. Select the Low-passFilter 1.Low-passFilter SlopeE. Select the High-passFilter Profile F. Adjust the High-passFilter ParametersD. Select the High-passFilter 3.Low-passFilter LevelA. Adjust the High-passFilter B. Adjust the Low-passFilter C. To End Noise Generation Step V. Select the PhaseStep VI. Saving Your Settings to Presets 1.Press the preset key Recalling PresetsTo save a setting configuration to a preset 1.Press the save keySECTION FIVE OperationThe Steps for Subwoofer Operation follow If You Wish to Turn Your System Off System ProtectionSubwoofer Care Krell Link Connecting Components Through Krell LinkOptional Connections SECTION SIXKrell Link Operation SECTION SIX Optional Connections continued RS-23212 VDC 12 V Trigger LED Menu Optional ConfigurationsAC Mains Menu SECTION SEVENMute Menu Unit ID Menu2.Press the enter key 38. You exit the menu mode Exit MenuThis option allows you to exit the menu mode Warranty Page serve you better Return Authorization ProcedureTo contact the Krell Service Department