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Lexicon MC-1 AC-3 Effect Parameters, THX 5.1 (Including Surround EX)

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AC-3 Effects and Parameters

AC-3 Effect Parameters

AC-3 STATUS displays the current status of incoming AC-3 data. The

displayed items are not user adjustable.

BASS ENHANCE derives stereo bass to provide low frequencies that

are noticeably less localizable and more spacious in the playback room.

Note that results will vary depending on room acoustics and the low

frequency capacity of the surround speakers. As side and/or rear

speakers are used for bass enhancement, the effectiveness is improved

with speakers capable of reproducing reproducing low frequencies

(LARGE). Using speakers that are not capable of producing low

frequencies (<80Hz) may cause damage to them.

CENTER DLY SAMPLES adjusts the time offset of the center channel.

The appropriate value is +0 unless you know that the center channel is

not properly timed, as well as the amount by which it is off.

CENTER MIX adjusts the level of the center channel applied to the two-

channel downmix. The appropriate value for film is 16. The appropriate

value for music is 11.

COMPRESSION enhances the intelligibility of Dolby Digital material at

low volume levels (-6dB or lower). When set to AUTO, this control

automatically limits peak signals and boosts low level signals. The

amount of compression increases proportionately as volume is de-

creased. This is quite useful when listening to Dolby Digital soundtracks

at low output levels. When set to ON, full compression is applied,

regardless of volume.

Parameter Initial Value Range

AC-3 STATUS (display only — not user adjustable)

COMPRESSION OFF AUTO, ON, OFF

SURROUND EX ON ON, OFF

RE-EQUALIZER ON ON, OFF

LFE MIX LEVEL +0.0dB -10.0dB to +0.0dB

SUBWOOFER LVL +00dB OFF, -30dB to +05dB

CUSTOM

THX 5.1 (Including Surround EX)

This Effect provides THX 5.1 and Surround EX enhancements for film

soundtracks recorded in the Dolby Digital format. This processing

compensates for the acoustical differences between large mixing the-

aters and the typically smaller home environment. When SIDE and

REAR speakers are selected in the SPEAKER CONFIG menu, SUR-

ROUND EX is automatically set to ON for proper decoding of Surround

EX soundtracks.

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)