Lexicon MC-1 AC-3 Effects and Parameters

45

MC-1 Digital Controller

AC-3 Effects and Parameters

AC-3 Effects are compatible with Dolby Digital input signals. Any AC-3-

capable software and/or source components should be labeled with a

badge, similar to the one on the MC-1 front panel.

AC-3 Status Display

In the AC-3 effects, an AC-3 Status Display is available in the parameter

menu with the following information.

MATRIX ENCODED: YES indicates a 2.0 Dolby Digital input is matrix

encoded; No indicates it is not.

DOWNMIX: YES indicates a Dolby Digital input is being downmixed for

the selected speaker configuration. NO indicates no downmixing is

taking place, except in the 5.1 2-Channel Effect, which is designed to

create a two-channel downmix from Dolby Digital 5.1 channel signals.

DATA RATE: 32-640kb, depending on the data rate of the incoming

Dolby Digital signal.

SAMPLE RATE: 44.1kHz or 48kHz depending on the incoming Dolby

Digital signal.

PGM CONTENT: shows you the actual spatial characteristics of the

incoming soundtrack. The information appears as F/S.LFE where

F=the number of front channels and S=the number of surround chan-

nels. LFE=.1 if the LFE channel is on.

For example, a given source may display 3/2.1, indicating that the

source was mixed with 3 front channels, 2 surround channels, and the

LFE channel. When the designation .1 indicates that the LFE channel

is on, as in our example, a level meter at the bottom of the display will

show LFE channel activity. (Note, that there may be instances where the

LFE channel is on, but no activity shows in the meter display.)

REF OFFSET indicates the Dialog Normalization value that is present

in AC-3 bitstreams. In AC-3, dialog is reproduced at -31dBFS (31dB

below full scale). If the program material was mixed so that dialog is at

-31dBFS, then REF OFFSET=0dB. If the dialog was mixed at a "hotter"

level, for example, -27dBFS, then REF OFFSET = -4dB and the MC-1

would adjust the levels down 4dB to bring dialog back to -31dBFS.

AC-3 STATUS

DOWNMIXSAMPLE RATEDATA RATEPGM CONTENTREF OFFSETNO48kHz384 kb/sec3/2.1-4dB

MATRIX ENCODED

NO

LFE

4

AC-3 Effects and Parameters

Contents

Main Lexicon Part #070-13278 Rev 1 Printed in the United States of America Important Safety Instructions CAUTION Communications Notice Acknowledgements Page Page Introduction 1 Installation 2 System Configuration Contents 3 PCM Effects and Parameters 4 AC-3 Effects and Parameters 5 DTS Effects and Parameters 6 Troubleshooting Introduction Using the Documentation Glossary of Terms Page Controls and Indicators The Front Panel Installation LEXICON MC-1 COPYRIGHT 1999 The Rear Panel The Remote Control Alternate Remote Control Functions Using the Shift and Record/Zone 2 buttons Page Connection Location Considerations AC Connections Wiring Considerations Audio/Video Cables Speaker Connections Audio/Video Connections Lexicon MC-1 Connections Video Connections Digital Audio Connections true Expansion Port Input Connections crossovers and effects. "AC-3 Ready" Laser Disc and LD/DVD Players Restore Factory Defaults Equalization System Configuration Bass and Treble Level Lexicon (Hz) (Hz) Tilt Bass Tone Control Frequency Response Tilt Control Frequency Response Loudness (dB) Display Adjustment The Video On-Screen Display Page Input Configuration Input Gain (Analog Inputs Only) INPUT CONFIG MENU VCR DVD TV AUX CD TUNER TAPE V-DISC Input Level Meters INPUT GAIN CD AUTO +00dB MANUAL -15.0dB FX Format Automatic Page PCM Only AC-3 Only must DTS Only Audio In Analog corresponding COAX 1-5 and OPTICAL 1-3 (Digital Audio Inputs) Video In Record/Zone 2 Record/Zone 2 Controls ON Page Front L/R PGM Trigger Assignment Speaker Configuration Custom Configuration SPEAKER SETUP MENU CUSTOM CONFIG THX CONFIG SURROUND EX CONFIG Center Sides Rears Subwoofer Output THX Configuration Setting Output Levels SETUP MENU INPUT CONFIG SPEAKER CONFIG OUTPUT LEVELS LISTENER POSITION LOCK SETTINGS C Slow Note on External Noise Calibration Adjust with or SUB PEAK LIMITER LIMITER LIMITER ADJUST ON +15dB !WARNING! REDUCE SYSTEM VOLUME BEFORE TURNING LIMITER OFF Subwoofer Peak Limiter Setting Listener Position Speaker Distance Mute Level Power On Volume Zone 2 Power On Volume A/V Sync Delay Calibrate Panorama perceived { sweet spot right left right { L/R Balance Zone 2 Balance Customization Locking Settings Assign Custom Name Using MC-1 Effects Customizing Effects Comparing a modified Effect to the factory preset version Restoring the original parameter values of an Effect dont Naming your custom Effect Restoring the original Effect name Listening to only the MC-1 Effect PCM Effects and Parameters Panorama Nightclub Church Concert Hall Cathedral Party 2-Channel Music Surround Music Logic Logic 7 TV Matrix Pro Logic THX Cinema PCM Effect Parameters Mono Logic Page difference sum Page Page AC-3 Effects and Parameters AC-3 Status Display AC-3 STATUS MATRIX ENCODED DOWNMIX SAMPLE RATE DATA RATE PGM CONTENT REF OFFSET 5.1 Music 5.1 2-Channel 5.1 Logic 7 Dolby Digital AC-3 Effect Parameters THX 5.1 (Including Surround EX) Page Page DTS Effects and Parameters DTS 2-Channel DTS Music DTS Logic 7 DTS Film DTS THX (Including Surround EX) DTS Effect Parameters Page Troubleshooting Problem Possible Cause and Solution Routine Maintenance low-pressure without Restoring Defaults Specifications Specifications Installation Worksheet Inputs Speaker Configuration (circle selection)