Lexicon CP-1 User Manual

Panorama AmbienceReverb SurroundCP-1Digital AudioEnvironmentProcessorOwner'sManual

Page 6LexiconControls andIndicators

Page 7CP-1 Digital Audio Environment Processor2ConnectionandCalibrationInstallation• Make sure the remote control receiver, located on the right side

Page 8LexiconConnectionandCalibrationVCRorCASSETTE DECKAUDIOOUTIIITAPEOUT/INREARMAINSIDESIDEAMPSCP-1INPUTSVCR, TV, VIDEOCONTROL CENTERREAR AMPSCENTERA

Page 9CP-1 Digital Audio Environment ProcessorConnectionandCalibrationPush the INPUT I button on the front panel. Push the MONITOR SOURCEand TAPE PRE

Page 10LexiconConnectionandCalibrationThe output level potentiomenters (the small knobs above the output con-nectors on the CP-1 rear panel) allow you

Page 11CP-1 Digital Audio Environment ProcessorConnectionandCalibrationPANORAMA works by canceling the sound going from each speaker to theopposite ea

Page 12LexiconConnectionandCalibrationgo on to step 6; otherwise, perform step 5.5. Push PARAM twice so the display reads: SPEAKER ANGLE. If the sweet

Page 13CP-1 Digital Audio Environment ProcessorSpeakerSet-Up andConfigurationConfigurationSpeaker Configurations3Press the PARAM UP or DOWN buttons un

LexiconPage 14SpeakerSet-Up andConfigurationNotes onAmplifiersHow much power do you need? That depends on a number of variables —How efficient are you

Page 15CP-1 Digital Audio Environment ProcessorSpeakerSet-Up andConfigurationIf your center channel speaker is smaller than the left and right fronts,

Unpacking and InspectionAfter unpacking the CP-1, save all packing materials in case you ever need to ship the unit. Thoroughly inspect theCP-1 and pa

LexiconPage 161Center Phantom Button INGood9Center Phantom Button INBestBetterCenter Phantom Button IN5If your main interest is music, you will most l

Page 17CP-1 Digital Audio Environment ProcessorSubwoofer ConnectionsThe Subwoofer Output is a monaural signal created by summing the left,right and ce

LexiconPage 18SpeakerSet-Up andConfiguration

Page 19CP-1 Digital Audio Environment ProcessorTo Load, Modify andStore Programs4Using theProgramsThe CP-1 contains four basic programs: Panorama, Amb

Page 20LexiconPanoramaThe Programs:PanoramaThe location of the front speakers and the listening position are crucial toPanorama’s effectiveness and fo

Page 21CP-1 Digital Audio Environment ProcessorThe Programs:PanoramaThe procedures for naming a new version of the program (SET PROGRAMNAME) and stor

Page 22LexiconAmbienceThe Programs:AmbienceAmbience generates the appropriate early reflections for stereo simulationof one of six different halls — o

Page 23CP-1 Digital Audio Environment ProcessorThe Programs:AmbienceROLLOFF mimics the absorption of the air in the hall and its initial value isthere

Page 24LexiconReverbThe Programs:ReverbThe Reverberation program differs from Ambience in that it does notsimulate the early reflections of specific h

Page 25CP-1 Digital Audio Environment ProcessorThe Programs:ReverbMID RT (Midrange Reverberation Time) is the time required for midrangesounds to deca

Safety SuggestionsRead Instructions Read all safety and operating instruc-tions before operating the unit.Retain Instructions Keep the safety and oper

Page 26LexiconSurroundThe Programs:SurroundTrebleMono LogicProgramParametersEffect LevelThe term Dolby Stereo refers to both movies and equipment used

Page 27CP-1 Digital Audio Environment ProcessorThe Programs:SurroundREAR ROLLOFF controls the treble attenuation and should be adjusted onmusic for m

Page 28LexiconProgram Parameters cont'dThe Programs:SurroundAuto Azimuth/BalanceThe AUTO AZIMUTH/BAL parameter should be set to ON for films, OFF

Page 29CP-1 Digital Audio Environment ProcessorTo Rename andStore a RegisterStoring a RegisterNaming a RegisterUsing theProgramsRestoring OriginalSett

Page 30LexiconUsing thePrograms

Page 31CP-1 Digital Audio Environment Processor5TroubleshootingTroubleshootingIf you encounter a problem, please review the items in the followingchec

LexiconPage 32TroubleshootingProblem Possible Cause and SolutionMuffled sound in L&R channels When no center channel is used, the rear-panel phant

Page 33CP-1 Digital Audio Environment ProcessorTroubleshootingProblem Possible Cause and SolutionRestoring defaults If severe power surges or sags ca

LexiconPage 34Troubleshooting

Page 35CP-1 Digital Audio Environment ProcessorLateral SoundFor decades the study of concert-hall acoustics relied on certain basicmeasurements to cha

Table of ContentsCP-1 Digital Audio Environment Processor1 Controls and IndicatorsIntroduction 1The Front Panel 2The Rear Panel 3The Remote Control 42

LexiconPage 36}Side sound must be within this angle.TheoryandDesignUnderstanding the importance of lateral reflections enabled more accurateevaluation

Page 37CP-1 Digital Audio Environment ProcessorTheoryandDesignsides. Both methods depend on having the added sound come from adifferent direction tha

LexiconPage 38the left speaker.The main problem with a first-order device is that the subtracting signal isalso heard by the opposite ear. In our exa

Page 39CP-1 Digital Audio Environment Processorsignal that is canceling it are eliminated.This works extremely well when the room is well damped and t

LexiconPage 40In a well-damped room with loudspeakers mounted on stands away fromthe walls, the Panorama effect can be very exciting, giving the close

Page 41CP-1 Digital Audio Environment ProcessorPanorama greatly increases low frequency width and should only be usedwith true binaural recordings, w

LexiconPage 42BATheoryandDesignThe best way to generate spatial im-pression (SI) is with appropriate sig-nals from loudspeakers at the side.Reverb, Am

Page 43CP-1 Digital Audio Environment ProcessorTheoryandDesignReverb is very good for simulating alarge reverberant space.The ReverbProgrammusic.If yo

LexiconPage 44The SurroundProgramsTheoryandDesignenhanced film viewing. Mono Logic is a stereo conversion program for monaural film sound tracks.A qui

Page 45CP-1 Digital Audio Environment Processorroom simulator has outputs for left, right, side and rear surround speakers.The monaural input sound

Page 1CP-1 Digital Audio Environment ProcessorIntroductionControlsandIndicators1All of the programs in the Lexicon CP-1 Digital Audio Enviro

LexiconPage 46Simple logic decoders turn down theleft and right speakers during dialog.This seriously affects music and ef-fects.speakers, effects are

Page 47CP-1 Digital Audio Environment ProcessorPro Logic decoders remove dialogfrom the left and right channels,while maintaining stereo as m

LexiconPage 48result is superior steering. An added benefit is that the CP-1 is the only ProLogic decoder which needs no front panel input balance co

Page 49CP-1 Digital Audio Environment ProcessorTheoryandDesignsounds appear in the front left and right speakers (and the side left and rightspeakers,

LexiconPage 50TheoryandDesignsound does not. Occasional extra wide sound effects can seem peculiar atfirst for being so much wider than the screen bu

Page 51CP-1 Digital Audio Environment Processor1. Schroeder, M.R., Gottlob, D. and Siebrasse, K.F.,"Comparative Study ofEuropean Concert Halls:

LexiconPage 52TheoryandDesign

Page 53CP-1 Digital Audio Environment Processor7SpecificationsPatents are pending on the CP-1Unprocessed channels: 10 Hz - 100 kHz, +1, -3dB*Processed

06/00 | Lexicon Part #070-06619 | Rev 3.0 Printed in the United States of America3 Oak ParkBedford, MA 01730 USATelephone 781-280-0300FAX 781

Page 2LexiconThe Front PanelSourceThe SOURCE buttons select one of two identical stereo pairs of audioinputs. Ordinarily Input I will be connected to

Page 3CP-1 Digital Audio Environment ProcessorThe Rear PanelRear and SideOutputsStereo outputs for rear and side power amplifiers, with level adjustin

Page 4LexiconThe Remote ControlThe ProgramsThe REVERB programs, like AMBIENCE, simulate rooms of three sizeswith the aid of side and rear channels. T

Page 5CP-1 Digital Audio Environment ProcessorSurroundControls andIndicators*The first push of either of this pair of buttons displays the current val