Lexicon Part No. 070-12663

Basic Operation

PCM 91 Quick Reference Guide

Note: You can set and display delay values in units of time, orwith tempo values. Whenever a delay value is displayed in Editmode, press Up and Tempo simultaneously to toggle these twooptions.

Halls: OrchestralP0 0.0 Deep Blue

The PCM 91 has 5 basic modes of operation, selected by pressing: Program Banks, Register Banks, Edit, Control or Tempo

Each set of PCM 91 controlsis organized into a matrix ofas many as 10 rows and 10columns.

XXXXXXX Q XXXXXXXXX

3.6 XXXXXXXXXXXXXXXXX

Your current matrix location is shown in the lowerleft of the display. A P, an R or a C preceding thenumber indicates you are in a Program, Registeror Card Bank. If there is no number shown here,you are in Go mode. (See Edit.)

Up and Downmove youverticallythrough therows of thematrix.

In Edit, Control or Tempo mode, ADJUST scrollsthrough the range of available settings for the displayedcontrol . In Program Banks and Register Banks mode,ADJUST is patched to one or more effect parameters.

In Program and Register modes,descriptivebank and row labels appear on the top line ofthe display these can be customized foryour own effects in Control mode.

Simultaneously press Upand Down to return to 0.0. In Edit, Control or Tempo mode, a Qindicates the presence of multiple param-eters within a single matrix location. PressLoad/Q to cycle through all of the param-eters; simultaneously press Load/Q witheither Up or Down to backstep.

SELECT moves youhorizontally across the matrix.

To set PCM 91 tempo rate,press Tempo. Use SELECTand Up and Down to locatematrix position 0.0. Turn AD-JUST to select any TempoRate from 40-400 BPM.

Any PCM 91 delay param-eter and any time-basedmodulator can be individu-ally assigned an absolutetime or tempo value.

You can set delay times inmilliseconds, or in a ratio ofechoes/beats l inked totempo. When you changetempo, the delay times willchange to maintain thesame rhythm at the newtempo.

Tempo

Or, press Tap twice inrhythm to establish thetempo rate you want. Tap isalways active, allowing youto change tempo on the fly.

EditPress Edit to access allavailable parameters for thecurrently running effect. TurnADJUST to alter the value ofany displayed parameter.

ControlPress Control to access sys-tem parameters, MIDI con-trols, and global control ofparameters such as Mix,Tempo, and Bypass type.

TempoPress Tempo to set tempo-related values that affect thedelay time and LFO rate pa-rameters of the currentlyrunning effect.

Effect SortingThe PCM 91 lets you per-form KeyWord sorting ofyour effects. (The defaultKeyWord A to Z displays allof the effects in the box inalphabetical order.)

To select a differentKeyWord for sorting, go toControl 1.8. and use AD-JUST to select any KeyWordfrom the following list.

PCM 91 KeyWordsA to ZAcousticAmbienceBalladBrightBroadcastCascadeChamberClassicalCncrt HallCustomDarkDialogDrums/PercDynamicEchoFilm-ADR

RoomShortSlap FXSmallSpatialSpecial FXSplitsStereoSurroundTempoUnnaturalVocalUser 1User 2User 3User 4

GatedGuitarIndoorInstrumentKeyboardLargeLive PALongMasteringMediumMIDIMonoNaturalOrchestralOutdoorPlateRandomHall

As many as 4 KeyWordscan be assigned in Editmode to each effect. (We'vealready assigned at leastone to every preset.)

Press either Banks buttonone push beyond the lastbank to view the list of sortedeffects. Turn SELECT toscroll through the list.

Program Banksand Register Banks

Press Program Banks tocycle through 9 banks of 50presets. Press RegisterBanks to access 2 internalbanks of 50 registers (orPCMCIA card banks) whereyou can store your versionsof the factory presets.

Simultaneously press and re-lease both Banks buttons toview the previously loadedeffect. Turn SELECT to viewas many as 10 effects back.

Press Load/Q to load anydisplayed effect. ADJUSTacts as a soft knob for ad-justment of one or morepatched effect parameters.

Turn SELECT to view all ofthe effects. A Q in front of aneffect name indicates thatthe effect is not loaded. Holddown either Banks button tosee the name of the currentlyrunning effect.

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PCM 91 Quick Reference GuideAudition the Programs

Press Program Banks to cycle through 9 banks of 50 presets.Turn SELECT to view all of the presets in the selected bank.Press Load/Q to load any displayed effect.

P0 HallsOrchestralVocalLive SoundInstrumentCustom

Press Load/Q to move theQ to the Register ID number.Use ADJUST or SELECT tochoose the register whereyou want the effect saved.

Press Store. The currentprogram name will appearwith a flashing cursor overthe first letter of the name.

Turn ADJUST to select a newcharacter. Press Up or Downto select a new type of char-acter (upper or lower case,numeric, symbolic, or blank).Turn SELECT to move thecursor to a new character.

Store

Press Bypass to mute theinput signal. A Bypass Modeparameter at Control mode1.3 allows you to select inputmuting, output muting, inputand output muting, or bypassas alternatives. You can alsoassign the bypass function toan external controller.

Bypass

The PCM 91 offers two levels of editing control: Go mode and Pro mode.

Turn SELECT to view theavailable parameters.

Go mode gives you access to a specific set of as many as 10parameters for each of the 250 presets. We have designedeach set of parameters to allow you to make changes to theeffect without losing the character of the sound.

In Go mode, press Edit toaccess the most useful pre-set parameters for the cur-rently running effect.

Turn ADJUST to change thevalue of any displayed pa-rameter.The PCM 91 is shipped in Go mode. To change the Edit mode,

press Control, use SELECT and Up and Down to locatematrix position 1.0. Turn ADJUST to select Go or Pro.

Edit

Pro mode gives you access to the full effect edit matrixwhenever you press Edit. The edit matrix contains all effectparameters, Patching and Modulation controls, and tools forcreating Custom Controls and assigning KeyWords to effects.

When you turn ADJUST, orperform any other param-eter edits, the front panelCompare light will go on toindicate that the programhas been modified since itwas last stored. Press Com-pare to hear the uneditedversion. Press again to re-turn to your edited program.

CompareEach preset has one or moreparameters patched to theADJUST knob.

Turn ADJUST to display thename and the current valueof the patch.

Continue turning ADJUST tochange the value of the patchalong its entire range. Thescreen will return to its nor-mal display when you stopturning ADJUST.

When the display shows theregister number you want,press Store. Press Store inresponse to the "Are yousure?" message to save yournew effect to the displayedregister location.

The PCM 91 offers an exten-sive set of informative dis-play messages which can beactivated from the frontpanel. If you want to knowmore about the function of aparticular button, press andhold the button down. Whileyou are holding down thebutton, an explanatory mes-sage will be displayed.

Info

In addition to these easy plug and play techniques, the PCM 91 provides extensivesystem control via front panel patching or MIDI. For complete details on these and otherfeatures, read the PCM 91 User Guide.

In addition to ADJUST, as many as 4 Custom Controls can becreated for any effect. We've created some interesting ones forthe presets in a row called "Custom" at the end of each bank(4.0-4.9) Look for these in the first Edit row.

P2 PlatesInstrumentVocalLive SoundDrums/PercCustom

P3 PostIndoor SmallIndoor LargeOutdoorSpatialCustom

P4 SplitsMonoStereoLive SoundInstrumentCustom

P5 StudioEnvironmentsInstrumentsVocalDrums/PercCustom

P6 LiveAcousticElectricVocalDrums/PercCustom

P7 PostSmall SpacesMed SpacesLarge SpacesCool PlacesCustom

P8 SurroundSmall SpacesLarge SpacesUnnatural FXCustom"Clean Slate"versions of the DualRvb algorithms

P1 RoomsInstrumentVocalLive SoundDrums/PercCustom