Krell-industries MASTER REFERENCE SUBWOOFER User Manual

MRSMASTER REFERENCE SUBWOOFEROWNER’S REFERENCE

(SECTION ONE: About Krell continued)Revolutionary Krell CAST TechnologyThe Master Reference Subwoofer is designed with Current Audio Signal Transmissi

continued䊳5CAST and Krell Current Mode CombinedCAST technology combined with Krell Current Mode circuitry take signal transmissionto the next evolutio

(SECTION ONE: About Krell continued)Ensuring Maximum PerformanceThe function of the Master Reference Subwoofer is toreproduce, with unprecedented auth

continued䊳7Active Motion Control is a unique circuit topology developed by Krell specificallyfor the Master Reference Subwoofer. An instrument grade a

(SECTION ONE: About Krell continued)8(Drivers continued)Two 80 oz. strontium ferrite magnets are affixed to the custom-made, castmagnesium speaker fra

continued䊳9Totally Balanced OperationBalanced circuits ensure optimum signal to noise ratios, signal preservation, andaccuracy of delivery under every

(SECTION ONE: About Krell continued)(Totally Balanced Operation continued)The Output Stage. In the output stage of a conventional amplifier, loudspeak

(SECTION ONE: About Krell continued)continued䊳11ConfigurationsA method of configuring multiple Krell preamplifiers, amplifiers,and associated componen

(SECTION ONE: About Krell continued)12Current Audio Signal Transmission (CAST) is a proprietary Krellcircuit technology for connecting analog componen

13A proprietary Krell circuit topology in which the audio gain stagesoperate in the current domain. Krell Current Mode providesspeed and bandwidth per

Master Reference Subwoofer Owner’s Reference, v00.1Krell Industries, Inc.45 Connair RoadOrange, CT 06477-3650 USATEL 203-799-9954FAX 203-891-2028E-M

14Unpacking and PlacementThis section describes the procedures for safely unpacking and placing the MasterReference Subwoofer.UnpackingEach Master Ref

15continued䊳In the packing crate you will find: 1 Master Reference SubwooferIn the space underneath the subwoofer, you will find: 1 power cord1 remote

(SECTION TWO: Unpacking and Placement continued)16Scenario 1: Stereo1243Scenario 2: Home Theater, Rear Projection14836725Scenario 3: Home Theater, Fro

117PlacementBefore you install the Master Reference Subwoofer, review the following guidelines tochoose the location for the subwoofer. This facilitat

18SECTION THREEFeaturesThis section provides illustrations of the Master Reference Subwoofer front panel,back panel, and remote control, and descripti

continued䊳191 Power ButtonUse this button to switch the Master Reference Subwoofer from the stand-by tothe operational mode. 2 Power LEDThe blue power

(SECTION THREE: Features continued)20Figure 3Power6 Power Switch7 AC Input Specification8 IEC Power ConnectorFigure 4Back Panel Remote Connections9Kre

continued䊳21BY-PASSOUTPUTRIGHTBY-PASSOUTPUTLEFTHIGH-PASSOUTPUTLEFTHIGH-PASSOUTPUTRIGHTINPUTLFEINPUTRIGHTINPUTLEFTRS-232INLFEIN OUT12VDCOUTIN KRELLLINK

(SECTION THREE: Features continued)Back Panel DescriptionSee Figures 3 and 4.The Master Reference Subwoofer back panel provides input and output conne

continued䊳2312 RC-5 InThe Master Reference Subwoofer is equipped with an RC-5 input that makescustom installation easy and secure by accepting baseban

1continued䊳iiiOverviewThis owner’s reference is written to assist you with the seamless integration of theMaster Reference Subwoofer into your audio/v

(Inputs continued)19 LFE Single-ended InputThe Master Reference Subwoofer is equipped with a low frequency effect (LFE)single-ended input. This input

continued䊳25Power26 Power KeyOperation Keys27 CAST Key28 Phase Key29 Preset Key30 Thtr (Theater) Key31 Save Key32 Unit Key33 All Key34 Mute KeyFilter

(SECTION THREE: Features continued)Remote Control Description26Battery Installation and RemovalThe Master Reference Subwoofer control uses two AAA-siz

continued䊳27Remote Control FunctionsSee Figure 5.The Master Reference Subwoofer remote control provides power, subwooferfunctions, and menu and progra

(SECTION THREE: Features continued)(Operation Keys continued)32 Unit KeysUse these keys to assign an ID to each component when multiple subwoofersare

29Filter Parameter Keys39 Type KeyUse this key to select the filter profile desired. The front panel display (4) showsthe current selection. See Step

Connections and ConfigurationsSee Figures 3 and 4.OverviewThis page outlines the connections (Steps I and II) and configurations (Steps IIIthrough VI

continued䊳31Connections and ConfigurationsThe remote control is the main input device for the Master Reference Subwoofer.All initial setup and subsequ

Factory DefaultsThe Master Reference Subwoofer is shipped with the following default settings.Low- and High-pass FiltersFilterBUTTERWORTHFrequency 10

continued䊳333. Connect the cables from the left and right Krell CAST 4-pin inputs (14) on theback panel to the left and right main preamplifier or pro

iv(Overview continued)SECTION FOUR: Connections and Configurations, pages 30- 41This section provides information on connecting and configuring the Ma

(SECTION FOUR: Connections and Configurations continued)34(Step II. Connecting the Master Reference Subwoofer to Your System continued) 7. Plug the AC

continued䊳35C. Choosing Stereo, LFE, or Stereo/LFEYour Master Reference Subwoofer can operate in stereo mode, low frequency effect(LFE) mode, or stere

(SECTION FOUR: Connections and Configurations continued)36Step III. Configure the Programmable Electronic CrossoverThis section explains how to config

continued䊳373. Low-pass Filter Levela. Press the level key (42). b. Use the adjust keys (43) to select the desired level setting (in 1 dB incre-ments)

(SECTION FOUR: Connections and Configurations continued)38Step IV. Match the High-pass and Low-pass Filter Levels This section explains how, once the

NotesYou can switch the low-pass filter on and off using the mute key, to help compare the filterlevels. Every time you adjust the level, the front pa

(SECTION FOUR: Connections and Configurations continued)40C. To End Noise Generation1. Press the menu key (37) to select the main menu.2. Press the up

41To save a setting configuration to a preset:1. Press the save key (31).2. Press the preset number to which the settings will be assigned. The front

SECTION FIVE42OperationThis section explains how to manually power on your system and subwoofer foroperation and explains the importance of powering o

If You Wish to Turn Your System Off:Turn your system off if it will not be used for a long period of time. It is critical thatyou turn off your system

vList of IllustrationsFigure 1, page 16Master Reference Subwoofer Placement OptionsFigure 2, page 18Master Reference Subwoofer Front PanelFigure 3, pa

44SECTION SIXOptional ConnectionsThis section describes three optional connections for the Master Reference Subwoofer.Krell Link connections (9) allow

continued䊳453. Connect one end of a MIDI cable to the Krell Link out connector, on the controlcomponent back panel.4. Connect the other end of a MIDI

(SECTION SIX: Optional Connections continued)46RS-232The RS-232 port (13) allows you to send operational instructions directly into theMaster Referenc

continued䊳47SECTION SEVENOptional ConfigurationsFive optional configurations are available on the Master Reference Subwoofer, tofurther customize subw

(SECTION SEVEN: Optional Configurations continued)48Mute MenuThis option allows you to customize the mute key to mute all subwoofer outputs oronly sel

49Exit MenuThis option allows you to exit the menu mode. 1. Press the menu key (37) or use the adjust keys (43) to select the exit menu.The front pane

50WarrantyEach Krell Master Reference Subwoofer has a limited warranty of five years for partsand labor on circuitry, for all sections except the loud

51Krell is not responsible for any damage incurred in transit. Krell will file claimsfor damages as necessary for units damaged in transit to the fact

To contact the Krell Service DepartmentTEL 203-799-9954, Monday-Friday9:00 am to 5:00 PM ESTFAX 203-799-9796E-MAIL [email protected] http

1A Letter from Dan D’AgostinoDear Audio Enthusiast,Thank you for your purchase of the Master Reference Subwoofer. The Master Reference Subwoofer is th

About KrellThis section describes the Krell Legacy, Krell’s revolutionary CAST technology, anddefines key terms used in this reference.The Krell Legac

continued䊳3From the first Krell product — the KSA-100 — to the present, Dan D’Agostino hascontinually “pushed the envelope” of performance in his sear