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Chorus

The stereo Chorus program uses six in-

dependently  randomized  delay  voices
panned  across  the  stereo  field.  This  pro-
gram, inherited from Lexicon's PCM 80, gen-
erates a rich, airy effect that can simulate the
sound  of  multiple  sound  sources  from  a
single source.

This program is stunning on acoustic or

clean electric guitar.

All of the variations of this program (1-8)

should be used with Mix set to fully Wet to
achieve the full richness of the 6-voice cho-
rus.

26

Chorus VARIATIONs

Adjust

Tap

1

Rich Chorus

± Resonance

–

2

Rich Chorus

± Depth

–

3

Rich Chorus

Rate

–

4

Rich Chorus

High Cut

–

5

Diffuse Chorus

Diffusion

–

6

Slap Chorus

Diffusion

–

7

Slap Chorus

± Resonance

–

8

Slap Chorus

± Depth

–

Chorus effects multiply the original audio source to create a lush, full sound.

Traditionally used to fatten up tracks and to add body to guitar without coloring the
original tone, chorus effects are also often used in combination with echoes, plates
and other reverb effects.

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Summary of Contents for MPX 100

Page 1: ...User Guide MPX 100 Dual Channel Processor Stereo 44 1kHz S PDIF Digital Output ...

Page 2: ...nd 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 experienc...

Page 3: ...t 48 MIDI Clock 49 MIDI Dumps 49 MIDI Implementation Chart 50 Specifications 52 Getting Started 1 Introduction 1 Front Panel Overview 2 Setting Audio Levels Rear Panel Connections 4 Audio Connections Headphones Footswitch Basic Operation 7 Selecting Programs 7 Single Programs Dual Programs User Programs Editing 9 Tap Tempo Functions Varying the rhythm Audio Tap Setting Tempo via MIDI Bypass 11 Sto...

Page 4: ...al Mono To make sure you get the most out of the MPX 100 be sure to read the manual A front panel Adjust knob allows instant manipulation of each preset s critical param eters and an Effects Lvl Bal knob lets you control effect level or the balance of dual effect combinations An easy Learn mode allows MIDI patching of front panel controls In addition tempo controlled delays and modulation rates lo...

Page 5: ...sed wet to unprocessed dry signals TAP Flashes for tempo based programs Press twice to set a tempo Hold to have input level determine tempo When pressed with Store activates MIDI Learn Bypass Mutes or bypasses the signal depending on the setting of the System Bypass parameter Press for 2 seconds to access System Parameters 2 Effects Lvl Bal Sets the level of the Single effects and the balance of t...

Page 6: ...than 30dB below overload The Clip LEDs light red when the signal approaches over load 2 5dB Acceptable signals will cause the Level LEDs to light green almost continuously with the Clip LEDs flashing red on peaks 3 While still sending audio to the MPX 100 gradually turn up the INPUT control until the Clip LEDs show red on only the loudest peaks 4 Set the MIX control to Dry 5 Turn OUTPUT to the des...

Page 7: ...ctor for mono output If no connection is made at the right output the left output can be used to drive headphones at modest volume FOOTSWITCH 1 4 TRS connector for momentary con tact footswitch allows footswitch control of front panel Tap and Bypass functions INPUT Single ended unbalanced inputs accept levels as low as 30dBu Input impedance is 500 kΩ Use the right input for mono sources Can be use...

Page 8: ...fects at both outputs For instruments and sources with stereo outputs use both inputs We recommend using the outputs in stereo whenever stereo inputs are used but if mono output is required use the right output jack The left and right signals are summed inter nally when only the right output is used Footswitch A footswitch connected via the rear panel footswitch jack allows control of Tap and Bypa...

Page 9: ...Designate two auxiliary sends on your console and connect one to the left MPX 100 input and the other to the right input Refer to the Program Descrip tions to take advantage of this configuration Connecting to a Balanced Console Mono Guitar Input with Mono or Stereo Amplifiers Dual Processor Setup with a Console ...

Page 10: ...ged around the left side of the PROGRAM knob the Dual selections and the User bank are arranged around the right side of the knob Single Programs When a Single program is selected turn ingthe VARIATIONknob to positions1 8 will load eight versions of the first effect posi tions 9 16 will load eight versions of the second effect For example when Plate Gate is se lected VARIATION 1 8 will load eight ...

Page 11: ...16 different programs each containing two ef fects User Programs When User is selected with the PRO GRAM knob VARIATION selects 16 memory locations available for storing your own programs When shipped User variations 1 16 contain duplicates of a selection of the fac tory installed programs ...

Page 12: ... Single programs or the Effects Balance of the Dual programs with the Effects Lvl Bal knob Changes made with either knob are rec ognized as edits and will cause the front panel Edit LED to light to alert you to the fact that the program has been altered 9 Editing Turn Effects Lvl Bal to adjust the level of a Single program or the balance of the two effects in a Dual program The Edit LED will light...

Page 13: ...ld Tap without taking your hands off your instrument 2 While holding down Tap play 2 short notes in rhythm then release the Tap button 3 The MPX 100 automatically calculates the tempo from the space between your two notes For live performances this is a must an easy way to set delay rates to follow your rhythm Many factory programs are stored with their own tempo rate You can tap in a new tempo an...

Page 14: ...X 100 will Learn these messages and allow you to set tempo via MIDI Pressing the front panel Bypass button will cause the MPX 100 to pass only dry unprocessed audio or to mute the inputs to the current effect The MPX 100 can also receive and utilize MIDI Clock So when used with a MIDI sequencer or drum machine the MPX 100 automatically adjusts its internal tempo to match See MIDI Operation A Syste...

Page 15: ...ain to saveyour program to the selected location and overwrite the program previously stored there The Store LED will flash rapidly while the store opera tion is completed The store operation is complete when the LED stops flashing and turns off The Edit LED will also turn off as the current program is now your saved ver sion Press Store The Store LED will flash slowly Turn PROGRAM to User and use...

Page 16: ...knob to select a parameter Press Store to toggle the state of the parameter or to execute a MIDI dump The Edit LED will show the current state of each parameter When you have finished editing param eters and are ready to resume normal opera tion return the VARIATION knob to its prior setting or you willload a new programbased on its position when you exit System Mode The Tap LED will light when VA...

Page 17: ...s Store to Transmit 14 Dump User Programs 15 Dump Current Program 16 Dump System and Learned patches Press and hold Bypass for 2 seconds The Bypass and Store LEDs will blink slowly to indicate you are in System mode Turn VARIATION to select a parameter System parameters MIDI Dumps Press Store to toggle the parameter state or to execute a MIDI dump System Mode Parameters Turn VARIATION until the Ta...

Page 18: ... parameter allows you to choose to pass only dry audio or to resume output of the full processed signal 5 MIDI OUT THRU Out Thru Sets the rear panel MIDI OUT THRU jack for either MIDI OUT or MIDI THRU functionality 6 MIDI Pgm Change Disable Enable The setting of this parameter determines whether or not the MPX 100 will recognize MIDIProgramChangemessagesforloading programs 7 MIDI Clock Receive Dis...

Page 19: ...16 ...

Page 20: ...ame time Program Descriptions The behavior of the Adjust knob is also customized for different functions Some times it acts as a linear control at its mini mum value when turned fully counterclock wise likeavolumecontrol and sometimes it acts as a bi polar control at its minimum value when centered like a cut boost EQ control The following section provides a general description of each MPX 100 pro...

Page 21: ...ally generated by a large thin sheet of metal suspended upright under tension on springs Transducers attached to the plate transmitted a signal that made the plate vibrate making sounds broadcast through the plate seem to be occurring in a large open space The Plate program in the MPX 100 syn thesizes the sound of metal plates with high initialdiffusionand arelativelybright colored sound This prog...

Page 22: ...Adjust Gated reverbs were originally created by feeding a reverb such as a metal plate through an analog gate device The decay time was set to instant and the hold time varied the duration of the sound Gate VARIATIONs Adjust Tap 9 Straight Gate Duration 10 Drum Gate Duration 11 Slope Down Duration 12 140 ms Gate High Cut Predelay 1 32 Note 13 240 ms Gate High Cut Predelay 1 32 Note 14 340 ms Gate ...

Page 23: ...s a good choice for giving separately recorded tracks the sense of belonging to the same perfor mance Lexicon s Hall programs recreate the acoustics of actual places from grand reverberant enclosures to small concert halls Hall VARIATIONs Adjust Tap 1 Recital Hall Decay 2 Small Church Decay 3 Jazz Hall Decay 4 Dance Hall Decay 5 Synth Hall Decay 6 Medium Hall Decay 7 Large Hall Decay 8 Large Churc...

Page 24: ...eful on a wide range of material It is especially useful on spoken voice giving a noticeable increase in loudness with very low color Historically recording studio chambers were often oddly shaped rooms with a loudspeaker and set of microphones to pick up theambience in various parts of the room Chamber VARIATIONs Adjust Tap 9 Brick Wall Liveness 10 Basement Liveness 11 Live Concert Liveness Eko D...

Page 25: ...ncreasing sizes 22 Ambience gives warmth spaciousness and depth to a performance without coloring the direct sound and is commonly used to add a room sound to recorded music or speech Ambience VARIATIONs Adjust Tap 1 Voice Over High Cut 2 Very Small Ambience High Cut 3 Small Ambience High Cut 4 Medium Ambience High Cut 5 Studio D High Cut 6 Bright Ambience Decay Level 7 Dark Ambience Decay Level 8...

Page 26: ...asing sizes 23 The Room program emulates actual rooms where there is a more apparent sense of being in a small live place Room VARIATIONs Adjust Tap 9 Bedroom Wall Reflections 10 Tiled Room Low Frequency Cut 11 Studio C Liveness 12 Small Room Liveness 13 Studio B Decay Time 14 Rehearsal Room High Low Equalizer 15 Studio A Decay Time 16 Large Room High Low Equalizer ...

Page 27: ...alistsand windinstrument players Itisalso oneof theoldest electronic effects frequently used with electric guitar electric piano and sometimes vocals Differenttremolo effectsare largely determinedby the rate and waveform shape of the loudness change fast or slow smooth or sharp If the effect is used in a stereo mix the left and right can be synchronized in a variety of ways to produce dramatic sid...

Page 28: ... ef fects for any sound source All of the variations of this program 9 16 should be used with Mix set to fully Wet for the full effect 25 Rotary speaker cabinets were originally designed to provide a majestic vibrato choir effect for electronic theater and church organs The most well known rotary speaker is the Leslie Model 122 which has two counter rotating elements a high frequency horn and a lo...

Page 29: ...hould be used with Mix set to fully Wet to achieve the full richness of the 6 voice cho rus 26 Chorus VARIATIONs Adjust Tap 1 Rich Chorus Resonance 2 Rich Chorus Depth 3 Rich Chorus Rate 4 Rich Chorus High Cut 5 Diffuse Chorus Diffusion 6 Slap Chorus Diffusion 7 Slap Chorus Resonance 8 Slap Chorus Depth Chorus effects multiply the original audio source to create a lush full sound Traditionally use...

Page 30: ...programs on two tape recorders then using hand pressure against the flange of the tape reels to slow down first one machine then the other The result was a series of changing phase cancellations and reinforce ments with a characteristic swishing tunnelling and fading sound Flange VARIATIONs Adjust Tap 9 Light Flange in phase sweep Resonance 10 Light Flange out of phase sweep Resonance 11 Light Fla...

Page 31: ...on use the desired amount of wet dry Mix 28 Altering the pitch of a sound allows a variety of effects from subtle detuning to the creation of harmonies and chords Pitch VARIATIONs Adjust Tap 1 Semi tone Shift 2 to 1 octaves 2 Glide Shifter 1 octave 3 100 cents 100 cents 4 Minor 3rd to 4th Harmony Flat 3rd to 4th Up 5 4th 5th Harmony 4th to 5th Up 6 5th 6th Harmony 5th to 6th Up 7 2nd Inversion Tri...

Page 32: ...ieve the full effect 29 Detune effects add a delayed pitch shifted version of the original source thickening up the sound They can be particularly effective when used to simulate double tracking They are also great alternatives to chorus effects adding the richness of a chorus without the audible sweep caused by the chorus rate Detune VARIATIONs Adjust Tap 9 Mild Detuning 10 Moderate Detuning 11 H...

Page 33: ...original sound to stand out more while digital delay can present a perfect copy of the orignal sound The MPX 100 Delay Echo variations include mono 5 5 seconds stereo 2 7 sec onds and 6 voice multitap effects Each of the16 variationscanbeusedfordigitaldelay or tape echo effects When Adjust is turned past its center postion to the right tape echo effects are produced Each repeat is darker and softe...

Page 34: ...back Delay Time 4 Dotted Eighth Note Delay Echo Feedback Delay Time 5 Eighth Note and Triplet Delay Echo Feedback Delay Time 6 Ping Pong Quarter Note Delay Echo Feedback Delay Time 7 Triplet Rhythm 1 Delay Echo Feedback Delay Time 8 Triplet Rhythm 2 Delay Echo Feedback Delay Time 9 Mono Delay Echo Time 0 5 5sec 10 Stereo Delay Echo Time 0 2 7sec 11 Tape Slap Delay Echo Time 3 3 4 to 30ips 12 Multi...

Page 35: ...ndoutputstereo audio from both left and right channels 32 Variations 7 10 are set up in the Cas cade configuration two stereo effects one placed after the other for example Flange Delay Flange passes its stereo signal to the Delay Variations 11 14 are set up in the Mono SplitconfigurationwhichissimilartoParallel however one effect Flange receives audio fromtheleft inputandthe othereffect Delay rec...

Page 36: ... second effect Behavior of Effects Lvl Bal in the cascade variations Several points from the knob s continuous range are illustrated here using the Pitch Delay program as an example At the leftmost setting you get only pitch shift At the rightmost setting you get only delayed dry signal This setting provides pitch shift plus delayed pitch shift At center you get delayed pitch shift This setting pr...

Page 37: ...ge Stereo Delay Delay Echo Feedback Delay Time 1 4 Note 8 Deep Flange Repeat Delay Echo Time 0 150ms Feedback 9 Deep Flange Ping Pong Delay Echo Feedback Delay Time 1 4 Note 10 Deep Flange Bounce Delay Echo Time 0 200ms Feedback 11 Light Flange Stereo Delay Delay Echo Feedback Delay Time 1 4 Note 12 Ligth Flange Ping Pong Delay Echo Feedback Delay Time 1 4 Note 13 Light Flange Repeat Delay Echo Ti...

Page 38: ...thm 2 5th to 6th Up Delay Time 7 Octave Up Down Triplet Rhythm 1 1 octave Delay Time 8 5th Up Down Triplet Rhythm 2 5th Delay Time 9 Major Minor Minor Major 3rd w Feedback Delay Time 10 Intervals Up Ascending Intervals w Feedback Delay Time 11 5th Up Down Stereo Quarter Note 5th Delay Time 12 Octave Up Down Triplet Shuffle 1 octave Delay Time 13 4th Up 5th Up Triplet Rhythm 1 4th to 5th Up Delay T...

Page 39: ...edback 7 Rich Chorus 1 Stereo 1 4 Note Delay Echo Feedback Delay Time 8 Rich Chorus 2 Multi Repeat Delay Echo Time 0 150ms Feedback 9 Rich Chorus 2 Ping Pong 1 4 Note Delay Echo Feedback Delay Time 10 Rich Chorus 3 Multi Pong Delay Echo Time 0 200ms Feedback 11 Rich Chorus 1 Stereo 1 4 Note Delay Echo Feedback Delay Time 12 Rich Chorus 1 Ping Pong 1 4 Note Delay Echo Feedback Delay Time 13 Rich Ch...

Page 40: ...arge Space Decay Time Delay Time 7 Stereo 1 4 Note Room Decay Time Delay Time 8 1 8 Note and Triplet Large Space Decay Time Delay Time 9 Triplet Rhythm 1 Room Decay Time Delay Time 10 Triplet Rhythm 2 Large Space Decay Time Delay Time 11 Stereo 1 4 Note Medium Space Decay Time Delay Time 12 Ping Pong 1 4 Note Large Space Decay Time Delay Time 13 Triplet Rhythm 1 Medium Space Decay Time Delay Time ...

Page 41: ...cay 6 Deep Flange Large Space Decay 7 Light Flange Large Space Decay Flange Rate Whole Note 8 Deep Flange Large Space Decay 9 Light Flange Room Liveness Flange Rate Whole Note 10 Deep Flange Room Liveness 11 Light Flange Medium Space Decay Flange Rate Whole Note 12 Light Flange Room Liveness Flange Rate Whole Note 13 Deep Flange Medium Space Decay 14 Deep Flange Room Liveness 15 Light Flange Large...

Page 42: ...m Detuning PreDelay 1 32 Note 7 100 Small Space 100 cents PreDelay 1 32 Note 8 Power Chords Large Space Decay Time PreDelay 1 32 Note 9 4ths Medium Space Decay Time PreDelay 1 32 Note 10 Octaves Medium Space Decay Time PreDelay 1 32 Note 11 4th to 5th Room 4th to 5th Up PreDelay 1 32 Note 12 5th to 6th Room 5th to 6th Up PreDelay 1 32 Note 13 4ths Large Space Decay Time PreDelay 1 32 Note 14 Octav...

Page 43: ... Chorus 2 Medium Space Decay Time 6 Rich Chorus 2 Large Space Decay Time 7 Rich Chorus 1 Room Liveness 8 Rich Chorus 2 Room Liveness 9 Rich Chorus 3 Room Liveness 10 Rich Chorus 1 Small Space Decay Time 11 Rich Chorus 1 Small Space Decay Time 12 Rich Chorus 2 Medium Space Decay Time 13 Rich Chorus 2 Large Space Decay Time 14 Rich Chorus 1 Large Space Decay Time 15 Rich Chorus 1 Room Liveness 16 Ri...

Page 44: ... Tone Rate Whole Note 4 Chorus Verb High Cut 5 Rotary Delay Dly Echo Time 0 150ms Fbk Rate 1 4 Note 6 Fader Verb Input Volume Echo 7 PCM 60 LgSize Decay Time 8 LowRumble Decay Time 9 Ducking Reverb Decay Time 10 Ducking Chorus Delay Resonance 11 Ducking Triplets Delay Echo Feedback 12 Subdividing Delay Beat Value 1 32 Whole Note Delay Time 13 Panning Delays Delay Echo Feedback Dly Time Pan Rate 14...

Page 45: ...4 Detune 12 15 Delay Echo 8 16 Delay Echo 12 User Programs Reinitialization Reinitializing the MPX 100 will reset all of the System Mode parameters to their factory defaults replace any programs stored in the User bank with the factory loaded preset copies and clear any Learned patches To do this 1 Hold the Store button while powering up the MPX 100 Store and Tap will flash rapidly Press Tap or By...

Page 46: ...ons can also be patched to Program Change As many as five Learn patches for the front panel Mix Effects Lvl Bal Adjust Bypass and Tap controls on as many as five MIDI Channels are supported Program Change messages 0 15 are re served for executing program loads on any learned MIDI Channel or a separate MIDI Channel can be selected for program load Program Change messages can also be used to load pr...

Page 47: ... Channels When shipped from the factory the MPX 100 has MIDI Channel 1 assigned as the default Program Load channel To re define the Program Load assignment 1 Simultaneously press Store and Tap to enter Learn Mode The Store LED flashes slowly and the Tap LED lights steadilytoindicateLearn Modeisactive 2 Send a Program Change message to the MPX 100 The Edit LED will flash to show incoming MIDI acti...

Page 48: ... Program Change 1 with PROGRAMpointingtoPlate Gate willcause the first Plate program to be loaded Sending controller 32 with a value of 0 followed by ProgramChange1 loadsthefirstprogramof the User bank Sending controller 32 with a valueof1 thenProgramChange2 loadsthe second program in the Flange Delay bank Sending controller 32 with a value of 8 then program change 15 will load the last Gate progr...

Page 49: ... PressStoretocommittotheassignment The Store LED will flash rapidly NOTE When a MIDI controller is assigned to Bypass or Tap moving it through the mid point of its Learned range will execute a press of the front panel button 5 To assign another front panel control to a MIDI controller repeat steps 2 5 6 Simultaneously press Store and Tap to exit The Store LED will flash rapidly if you have created...

Page 50: ...Change to theMPX 100 The Edit LED will flash to indicate incoming MIDI activity 4 Press Store to commit to the assignment The Store LED will flash rapidly To aid MIDI controllers such as some foot controllers which do not allow repeated Pro gram Change messages to be sent by a single button the MPX 100 learns the next highest Program Change along with every Program Change message it learns for Byp...

Page 51: ...I MIDI Front Panel Controllers Pgm Change Control 1 31 33 119 16 127 Mix Yes No Effects Lvl Bal Yes No Adjust Yes No Bypass Yes Yes Tap Yes Yes Program Change numbers 0 15 will be ignored except on the MIDI Channel assigned for pro gram load 2 Move the front panel control that you want to clear Mix Effects Lvl Bal Ad just Bypass or Tap 4 To clear another front panel assignment repeat steps 2 and 3...

Page 52: ... MIDI Clock Receive parameter in System Mode MIDI Dumps MIDI Dumps allow you to back up the 16 User programs the currently running pro gram or your System Mode settings and Learned patch assignments to a storage device typically a sequencer MIDI Dumps are performed in System Mode To perform a dump of the User pro grams the current program or all of the System Mode parameter settings 1 Press and ho...

Page 53: ...Mode Default Mode 2 Messages X X Altered X Note X X Number True Voice Velocity Note ON X X Off 9n v 0 Note OFF X X After Keys X X used as controller Touch Channels X OX Learned Pitch Bender X OX used as controller Learned Control X OX 1 119 0 and 32 used as Bank Select Change Learned MIDI Implementation 50 ...

Page 54: ...ID 14 decimal Exclusive Real Time X X Device ID MIDI Channel non Real Time X X 0 15 1 16 System Song Pos X X Song Sel X X Common Tune X X System Clock X O Real Time Commands X X Aux Local ON OFF X X Messages All Notes OFF X X Active Sense Reset X X Mode 1 OMNI ON POLY Mode 2 OMNI ON MONO O Yes Mode 3 OMNI OFF POLY Mode 4 OMNI OFF MONO X No OX Selectable 51 ...

Page 55: ...t always active Sample Rate 44 1kHz Connector Coaxial RCA type Footswitch Tip Ring Sleeve phone jack for Bypass and Tap optional Frequency Response Wet Dry 20Hz 20kHz 1dB THD N 0 05 20Hz 20kHz Dynamic Range A A 95dB typical 20Hz 20kHz unweighted A D 100dB typical 20Hz 20kHz unweighted Conversion 20 bits A D 20 bits D A 44 1kHz sample rate Crosstalk 45dB Internal Audio Data Path DSP 24 bit Power Re...

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