Dolby Laboratories SDU4 Specifications

MODEL SEU4Surround EncoderUsers' InformationMAIN

2-5GBFDIIMPORTANT SAFETY NOTICEThis unit complies with the safety standard IEC65. To ensure safe operation and to guardagainst potential shock hazard

3-1SECTION 3CALIBRATION3.1 GeneralThe SEU4 is easily calibrated using an external tone, but consideration must be given tothe level this tone has in r

3-23. Apply the tone to the left input only. Connect a meter to the LT (left total) outputand adjust the LT output control to obtain studio reference

4-1SECTION 4BLOCK DIAGRAMA3B3798 REV 4SEU4 BLOCK DIAGRAM2.-3.8dB+15V REG-15V REGSUPPLYPOWERAND CAT.N0.385)(TO CAT.N0.338500mVTP201SWITCH CONTROLELECTR

A-1APPENDIXDolby Surround: Getting StartedStudio QuestionnaireTechnical Requirements for Dolby Surround in Recording Studios"Phase Correctors&qu

A-2Dolby Laboratories InformationDolby Surround: Getting StartedConsole Buss AssignmentInterfacing with standard studio equipment, the professional SE

A-3Stereo and Mono CompatibilityDolby Surround is fully compatible with conventional stereo reproduction. Centerinformation will appear as a phantom

A-4Studio QuestionnaireDolby Laboratories is active in the marketing of Dolby Surround and in order to maintainour studio database, please complete an

A-5Questionnaire Studio ProductsModels SEU4 / SDU4This questionnaire is for recording facilities equipped with the Dolby SEU4 Surround Encoderand Dolb

Dolby Laboratories InformationDolby and the double-D symbol are trademarks of Dolby Laboratories Licensing CorporationSignal Processing and Noise Redu

USERS' MANUALFORMODEL SEU4SURROUND ENCODERDolby Laboratories IncU.S.A. 100 Potrero Avenue, San Francisco, CA 94103-4813Tel: 415-558-0200; Fax:

2A note about Dolby’s products: The SEU4 and SDU4 are 1U high, 19" rack mount professionalunits. Both use XLR type connectors with balanced lin

3The center speaker needs to be at the same height as the left/right pair for best imaging. It isalso important to confirm that the polarity (phasing

45. Ancillary Equipment.Most studios have an array of signal processors available, and some are indispensable forproper Dolby Surround production. Lim

Dolby Laboratories InformationDolby and the double-D symbol are trademarks of Dolby Laboratories Licensing CorporationSignal Processing and Noise Redu

iTABLE OF CONTENTSSECTION 1 INTRODUCTION1.1 Introduction ...

1-1SECTION 1INTRODUCTION1.1 IntroductionThe Model SEU4 is used to generate Dolby Surround program material. The SEU4contains a precision four-to-two

1-21.2 SpecificationsLayout:1U rack-mount unit incorporating aprofessional surround encoder module,interface circuitry, and power supply.Signal Connec

2-1SECTION 2CONNECTIONSThe SEU4 is a one-unit high chassis containing power supply, input/output connectorsand two plug-in circuit boards, a Cat. No.3

2-22.2 Power and Fusing2.2.1 230V-Only SEU4OPEN THEDOOROPEN THEDOORACTIVEFUSEFUSECARRIERINSTALLFUSEMETAL CLIP INSTALLEDON UNUSED SIDE OFCARRIERTOPFigu

2-32.3 GroundIt is normal practice to connect signal ground to power line ground for many reasonsincluding safety. In the SEU4 they are linked by a j

2-4UKConnections for United Kingdom:WARNING: THIS APPARATUS MUST BE EARTHED.As the colours of the cores in the mains lead may not correspond with the