Lexicon CP-1 - REV 2.0 Bedienungsanleitung

Panorama Ambience

Reverb Surround

CP-1

Digital Audio

Environment

Processor Owner's

Manual

Lexicon

Lexicon Part #070-06619 Rev. 2.0 Printed in the United States of America

After unpacking the CP-1, save all packing materials in case you ever need to ship the unit. Thoroughly inspect

the CP-1 and packing materials for signs of damage. Report any shipment damage to the carrier at once; report

equipment malfunction to your dealer.

Unpacking and Inspection

This triangle, which appears on

your component, alerts you to

the presence of uninsulated,

dangerous voltage inside the

enclosure... voltage that may be

sufficient to constitute a risk of

shock.

CAUTION Thistriangle,whichappearson

your component, alerts you to

importantoperating andmain-

tenance instructions in this ac-

companying literature.

Telephone: (781) 280-0300 Fax: (781) 280-0490

Acknowledgement

The CP-1 is manufactured under license from Dolby Laboratories Licensing Corporation. Additionally licensed

under one or more of the following patents: U.S. numbers 3,632,886, 3,746,792 and 3,959,590; Canadian numbers

1,004,603 and 1,037,877. "Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing

Corporation.

Patents are pending on the CP-1

Precautions

This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the

manufacturer's instructions, may cause interference to radio and television reception. It has been type tested and found to comply with the

limitsforaClassBcomputingdeviceinaccordancewiththespecificationsinSubpartJofPart15ofFCCRules,whicharedesignatedtoprovide

reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur

in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the

equipment OFF and ON, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient the receiving antenna

Relocate the computer with respect to the receiver

Move the computer away from the receiver

Plug the computer into a different outlet so that the computer and receiver are on different branch circuits.

If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user may find

the following booklet prepared by the Federal Communications Commission helpful:

"How to identify and Resolve Radio/TV Interference Problems."

This booklet is available from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4.

RISK OF ELECTRIC SHOCK

DO NOT OPEN

Safety Suggestions

Read Instructions Read all safety and operating instruc-

tions before operating the unit.

Retain Instructions Keep the safety and operating instruc-

tions for future reference.

HeedWarnings Adheretoallwarningsontheunitandinthe

operating instructions.

Follow Instructions Follow operating and use instructions.

Heat Keep the unit away from heat sources such as radia-

tors, heat registers, stoves, etc., including amplifiers which

produce heat.

VentilationMakesurethatthelocationorpositionoftheunit

doesnotinterferewithitsproperventilation.Forexample,the

unit should not be situated on a bed, sofa, rug, or similar

surfacethat mayblocktheventilationopenings;or,placedin

acabinetwhichimpedestheflowofairthroughtheventilation

openings.

Wall or Ceiling Mounting Do not mount the unit to a wall or

ceiling except as recommended by the manufacturer.

Power Sources Connect the unit only to a power supply of

thetypedescribedintheoperatinginstructions,orasmarked

on the unit.

Grounding or Polarization* Takeprecautionsnotto defeat

the grounding or polarization of the unit’s power cord.

*Not applicable in Canada.

Power Cord Protection Route power supply cords so that

theyarenotlikelytobewalkedonorpinchedbyitemsplaced

on or against them, paying particular attention to cords at

plugs, convenience receptacles, and the point at which they

exit from the unit.

Nonuse Periods Unplug the power cord of the unit from the

outlet when the unit is to be left unused for a long period of

time.

Water and Moisture Do not use the unit near water — for

example, near a sink, in a wet basement, near a swimming

pool, near an open window, etc.

Objectand liquidentry Donotallowobjectstofallor liquids

to be spilled into the enclosure through openings.

CleaningThe unit shouldbecleanedonly as recommended

by the manufacturer.

ServicingDo notattemptanyservicebeyondthatdescribed

intheoperatinginstructions.Referallotherserviceneedsto

qualified service personnel.

Damage requiring service The unit should be serviced by

qualified service personnel when:

the power supply cord or the plug has been damaged,

objects have fallen, or liquid has been spilled into the

unit,

the unit has been exposed to rain,

the unit does not appear to operate normally or exhibits

a marked change in performance,

the unit has been dropped, or the enclosure damaged.

Outdoor Antenna Grounding If an outside antenna is

connected to the receiver, be sure the antenna system is

grounded so as to provide some protection against voltage

surges and built-up static charges. Section 810 of the Na-

tional Electrical Code, ANSI/NFPA No. 70-1984, provides

informationwithrespect topropergrounding ofthemast and

supporting structure, grounding of the lead-in wire to an

antenna-discharge unit, size of grounding conductors, loca-

tion of antenna-discharge unit, connection to grounding

electrodes, and requirements for the grounding electrode.

See figure below.

Power Lines An outside antenna should be located away

Power Service Grounding

Electrode System

(NEC Art 250, Part H)

Antenna Lead-in

Wire

Antenna Discharge

Unit (NEC Section

810-20)

Grounding Conductors

(NEC Section 810-21)

Ground Clamps

NEC —National Electrical Code

Electric

Service

Equipment

Ground

Clamp

from power lines.

Lexicon

CP-1

Digital Audio

Environment

Processor Owner's

Manual

Lexicon

Table of Contents

CP-1 Digital Audio Environment Processor

1 Controls and Indicators

Introduction 1

The Front Panel 2

The Rear Panel 3

The Remote Control 4

2 Connection and Calibration

Installation 7

Connections to Other Equipment 7

Setting the Main Input

and Output Levels 9

Calibration of the

Panorama Program 11

3 Speaker Set-Up and Configuration 13

4 Using The Programs

To Load, Modify

and Store Programs 19

The Programs:

Panorama 21

Ambience 22

Reverb 24

Surround 26

To Rename and Store

a Register 29

5 Troubleshooting 31

6 Theory and Design 35

7 Specifications 53

Page 1

CP-1 Digital Audio Environment Processor

Introduction

Controls

and

Indicators

All of the programs in the Lexicon CP-1 Digital Audio Environment

Processor have a common goal: to draw you, the listener, more deeply into

a musical performance or a film. For music the CP-1 uses unique digital

processing to re-create either the original recording space or a new one of

yourchoosing.ForfilmsitoffersanextremelyaccurateversionofDolbyPro

LogicSurrounddecoding and ourown decoding for monauralfilm sound-

tracks.The increase inimpact ofamusical performanceor filmwhenheard

with the CP-1 is enormous, especially when widely spaced multiple loud-

speakers are provided, but even without additional loudspeakers signifi-

cant gains are made.

To re-create the experience of being at a performance the CP-1 draws on

recent studies of concert-hall acoustics, and applies this research to home

listening rooms. The object is to increase the sideways-moving sound in a

room, thus increasing Spatial Impression, or SI.

The CP-1 increases SI by either extracting it from the original recording,

usingthePanorama orSurroundprograms, orbygenerating anewacoustic

environment with Ambience or Reverb.

When a listener is in the correct spot the Panorama program provides an

almost ideal re-creation of the original recording space. It works by using

digital processing to cancel the crosstalk between the listener's ears, effec-

tivelyspreadingthesoundfrom thetwo frontloudspeakersinawide arcin

front of the listener. With the optional addition of rear speakers, Panorama

can be almost spooky in its realism.

The CP-1 Reverb and Ambience programs provide signals for driving

widely spaced side and rear loudspeakers, directly exciting sideways

sound and heightening the listener impact over a large listening area.

(When there are no side speakers, Panorama is used to increase the side-

ways sound from the main speakers.)

The Ambience and Reverberation programs transform the listening room

into a new acoustic space, letting you choose an environment which

matches your music or your mood. Unlike some previous hall simulators,

theCP-1 providesfullstereoprocessing. TheAmbienceprogramgenerates

the side and rear reflection patterns of idealized rooms and concert halls.

Thelargerspacesaddthetruedepthandrealismofaconcerthalltoclassical

andpopular music,whilethesmallerspaces areidealforjazzand rock.The

Reverberation program is similar, but places more emphasis on rich, dense

reverberant decay than on early reflections. It is especially good for

simulating large, highly reverberant spaces.

For films encoded with Dolby Stereo, Lexicon has incorporated into the

CP-1thefirstcompletelydigitalDolbyProLogicSurrounddecoder,andthe

only one with automatic correction of azimuth and channel-balance errors

(the most common problems in currently available films). The CP-1 also

provides a program for playing music through a Surround speaker set-up

(Stereo Logic), and a program for expanding monaural film sound tracks

(Mono Logic).

Page 2

Lexicon

The Front Panel

Source The SOURCE buttons select one of two identical stereo pairs of audio

inputs. Ordinarily Input I will be connected to the main outputs of your

stereo preamp and the second input will be a spare. In video installations,

Input I will be connected to the main audio outputs of your TV receiver,

VCR or audio/video control center. Input II can then accept the outputs of

a separate system or the audio outputs of a video disc or CD player.

INPUT LEVEL

SOURCE

TAPEMONITOR

PRE POSTTAPE SYSTEM

MUTE EFFECT

MUTE POWER

III

DIGITAL AUDIO ENVIRONMENT PROCESSOR CP-1

exicon

The MONITOR button selects SOURCE I/II or TAPE IN. The Tape inputs

are provided to accommodate a recorder if the CP-1 occupies a previously

used tape monitor loop.

Monitor

Controls and

Indicators

OD BY

URROU

O I

System On/Off.

Theunlabeled LEDto theleftof theSystemMute Indicator lightswhen the

CP-1 detects a signal from the remote control. The SYSTEM MUTE LED

indicatesthat unprocessedaudio isnolongerpassingthrough tothe CP-1's

main outputs. The EFFECT MUTE LED indicates that the CP-1’s processed

audio is no longer passing through to its outputs.

Indicator

Lights

The alphanumeric display shows both the program that is running and its

modifiable parameters. The CP-1 has 24 registers: PRESETs 1-12 are

configured at the factory; those labeled USER 1-12 are available for storage

of programs customized by the user.

Alphanumeric

Display

The INPUT LEVEL control and its display allow you to match the level of

the incoming signal to the CP-1’s digital encoding circuits. When correctly

set, loud passages will light the entire row of green LEDs without flashing

the red ones.

The PRE and POST Tape switch determines whether CP-1 processing if

applied before or after tape output. PRE means that the tape deck gets the

signal unaltered (PRE-processing); POST applies CP-1 processing to the

tape output (POST-processing).To record CP-1 processing onto tape the

CP-1 must be in the two-speaker mode (Configuration 1) with the POST

button engaged.

Tape

Input Level

Power

Page 3

CP-1 Digital Audio Environment Processor

The Rear Panel

Rear and Side

Outputs

Stereo outputs for rear and side power amplifiers, with level adjusting

knobs. The procedure for balancing these outputs (as well as the center

channel and subwoofer) with the main pair begins on page 9.

Main outputs, with level adjustment. Level-setting of these outputs must

precede adjustment of the auxiliary channels.

Theadjustment ofthe subwooferoutput shouldbedoneonlyafterallother

channels are calibrated. (See page 11.)

Main, Center

and Subwoofer

Outputs

Center channel output with level control and button. Push the button in if

you have no center channel; leave it out if a center speaker is connected.

NOTE: Leaving this button out with no center channel will cause the

Surround programs to malfunction.

Center/Out

Phantom/In

Inputs and outputs for an additional audio or video tape deck (audio

portion only) or to replace the monitor loop occupied by the CP-1. Tape Out/In

Two sets of main inputs, selected by the SOURCE I/II buttons. Inputs

Controls and

Indicators

REA

SID

LEVE

OUTPUTS

TAPE

OUT INPUT

MAI

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