Lexicon MPX 100 User Manual
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Lexicon MPX 100 User Manual

Lexicon dual channel processor stereo 44.1khz s/pdif digital output user guide mpx 100
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MPX 100
Dual Channel Processor
Stereo 44.1kHz S/PDIF Digital Output

User Guide

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Summary of Contents for Lexicon MPX 100

  • Page 1: User Guide

    MPX 100 Dual Channel Processor Stereo 44.1kHz S/PDIF Digital Output User Guide...

  • Page 2: Unpacking And Inspection

    Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la class B prescrites dans le Règlement sur le brouillage radioélectrique édicté par le ministère des Communications du Canada. Acknowledgement All product names indicated by a Trade Mark are registered by their respective manufacturers. Copyright 1998, Lexicon Inc. All Rights Reserved. Lexicon Part #070-11935 Lexicon Inc.

  • Page 3: Table Of Contents

    Special FX ... 41 User Programs ... 42 Restoring Factory Defaults MIDI Operation ... 43 MPX 100 MIDI Behavior ... 43 Assigning a MIDI Channel for Program Load ... 44 Using Program Change Messages for Program Load Learning Continuous Controllers ... 46 Activating Bypass or Tap Functions with Program Change Messages ...

  • Page 4: Getting Started

    Introduction Thank you for your purchase of the MPX 100 Dual Channel Processor. The MPX 100 is a true stereo dual- channel processor with 24-bit internal pro- cessing, 20-bit A/D-D/A and S/PDIF digital output. Powered by a new version of Lexicon’s proprietary Lexichip™, the MPX 100 has 240...

  • Page 5: Front Panel Overview

    Bypass Mutes or bypasses the signal depending on the setting of the System Bypass parameter. (Press for 2 seconds to access System Parameters.) Edit LED Lights to indicate Effects Lvl/Bal program is altered Sets the level of the Single but not stored. effects and the balance of the Dual effects.

  • Page 6: Setting Audio Levels

    4. Set the MIX control to Dry. 5. Turn OUTPUT to the desired level. 6. If the MPX 100 is using a console’s sends and returns, set the MIX control fully clockwise (100% wet). If you are using an instrument amplifier, start with MIX set halfway up.

  • Page 7: Rear Panel Connections

    Two 5-pin DIN MIDI connectors are provided for MIDI IN and soft- ware selectable MIDI OUT/THRU. POWER DIGITAL OUTPUT Use Lexicon 9VAC power pack. RCA S/PDIF connector. FOOTSWITCH 1/4" TRS connector, for momentary con- tact footswitch, allows footswitch control of front panel Tap and Bypass functions.
  • Page 8 Bypass. A momentary footswitch can be wired to a tip-ring-sleeve connector. A stereo Y-connector allows two identical single switches to be used. Power off the MPX 100 before plugging in the footswitch. (Otherwise, Bypass will be enabled.) A dual-function footswitch with a set of labels to identify footswitch functionality (Tap and Bypass) is available from Lexicon dealers.
  • Page 9 Effects Processors with Dual Program Variations 11-16. 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- Modes of Operation tions to take advantage of this configuration.

  • Page 10: Basic Operation

    Selecting Programs All of the programs on the MPX 100 are selected with the front panel PROGRAM and VARIATION knobs. The PROGRAM knob selects Single or Dual program banks. The VARIATION knob selects different program versions. The Single selections are arranged around the left side of the PROGRAM knob;...
  • Page 11 Dual Programs When one of the Dual Programs is se- lected, the VARIATION knob will load 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.

  • Page 12: Editing

    Editing Editing MPX 100 programs is easy. We've arranged the critical parameters of each program under the front panel Adjust knob, so all you have to do is turn the knob to adjust the program to suit you. You can also adjust the level of the Single programs, or the Effects Balance of the Dual programs with the Effects Lvl/Bal knob.
  • Page 13 That’s your tempo. No more dial- ing up what “could be” the delay time in milliseconds — just tap twice — the MPX 100 will figure out the time for you. When you want to change tempo, just tap twice again in the new rhythm.

  • Page 14: Bypass

    (See MIDI Operation.) Bypass 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. Bypass can be set to mute or bypass effects.

  • Page 15: Storing Programs

    Storing Programs When you want to save a program, press Store. The Store LED will flash slowly to indicate that the MPX 100 store function is armed. (If you want to exit without saving the current program, press Store again.)

  • Page 16: System Mode

    System parameters and MIDI dumps are activated in System mode. To enter this mode, press and hold Bypass for approxi- mately 2 seconds. The Bypass and Store LEDs will blink slowly to indicate you are in System mode. The adjustable parameters available in this mode are shown in the chart on the following page.

  • Page 17: System Mode Parameters

    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 MIDI parameters Dumps System Mode Parameters Variation Setting Parameter Bypass Patching Program Load Digital Output MIDI OUT/THRU...

  • Page 18: System Mode Parameters

    This parameter allows you to temporarily suspend (Disable) and restore (Enable) any Learned patches. Program Load Mute/Bypass This parameter determines whether the MPX 100 will engage wet mute or simply bypass processed audio during program load. Digital Output Dry/Wet For certain recording and monitoring appli-...

  • Page 20: Program Descriptions

    The 240 programs in the MPX 100 are designed to provide a full palette of high caliber ambience, reverb, delay, pitch shift and other effects. As you audition the pro- grams, be sure to vary the Adjust knob. The Adjust knob has been carefully cus- tomized for each individual program.

  • Page 21: Single Programs

    — 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...
  • Page 22 Predelay (1/32 Note) High Cut Predelay (1/32 Note) Gate In the MPX 100, the Gate program pro- vides a fairly constant sound with no decay until the reverb is cut off abruptly. This pro- gram works well on percussion — particu- larly on snare and toms, but be sure to experiment with other sound sources as well.
  • Page 23 Jazz Hall Dance Hall Synth Hall Medium Hall Large Hall Large Church Lexicon's Hall programs recreate the acoustics of actual places, from grand reverberant enclosures to small concert halls. Adjust The clean reverberation of the Hall pro- Decay – gram is designed to add spaciousness, while Decay –...
  • Page 24 Chamber useful Liveness Eko Delay on a wide range of material. It is especially useful on spoken voice, giving a noticeable increase in loudness with very low color. Chamber In the MPX 100, the stereo Chamber...
  • Page 25 Ambience VARIATIONs Voice Over Very Small Ambience Small Ambience Medium Ambience Studio D Bright Ambience Dark Ambience Marble Foyer 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.
  • Page 26 Room VARIATIONs Bedroom Tiled Room Studio C Small Room Studio B Rehearsal Room Studio A Large Room The Room program emulates actual rooms where there is a more apparent sense of being in a small live place. Adjust Wall Reflections –...
  • Page 27 Rate (1/8 Note) Rate (1/8 Note) Rate (1/8 Note) Tremolo The MPX 100 tremolo variations offer a variety of tremolo shapes (square, sawtooth, triangle, sine and rectified sine). The syn- chronization of the left and right sides can be adjusted to produce mono and stereo ef- fects.
  • Page 28 Rate (Quarter-Note) ± Resonance Rate (Quarter-Note) Rotary The MPX 100 rotary effect is a detailed simulation of a Leslie-style cabinet. The in- put signal is split into high and low frequency bands. The rotation effect is created by a synchronized combination of pitch shifting, tremolo and panning.
  • Page 29 ± Depth – panned across the stereo field. This pro- Rate – gram, inherited from Lexicon's PCM 80, gen- High Cut – erates a rich, airy effect that can simulate the Diffusion – sound of multiple sound sources from a Diffusion –...
  • Page 30 — Sweep: 0, 90, 180, 270 — Flange In the MPX 100, the stereo Flanger has two 2-tap delays —one per channel. The first tap is fixed, and the second sweeps past it. Mixing the two delay taps together creates the flanging effect.
  • Page 31 Inversion — Pitch The stereo polyphonic Pitch program in the MPX 100 allows complete program ma- terial or monophonic sources to be shifted down two octaves or up one octave. For pitch correction, use this algorithm with Mix set to fully Wet. For harmonization,...
  • Page 32 Adjust Detuning – Detuning – the MPX 100 has one pair of voices per Detuning – channel. As more detune amount is applied Detuning – (with Adjust), the pair grow more out of tune, Detuning –...
  • Page 33 The MPX 100 Delay, Echo variations include mono (5.5 seconds), stereo (2.7 sec- onds) and 6-voice multitap effects. Each of the 16 variations can be used for digital delay or tape echo effects. When Adjust is turned past its center postion to the right, tape echo effects are produced.
  • Page 34 Delay, Echo VARIATIONs Adjust Mono Quarter-Note Delay/Echo Feedback Stereo Quarter-Note Delay/Echo Feedback Triplet Shuffle Delay/Echo Feedback Dotted Eighth-Note Delay/Echo Feedback Eighth-Note and Triplet Delay/Echo Feedback Ping Pong Quarter-Note Delay/Echo Feedback Triplet Rhythm 1 Delay/Echo Feedback Triplet Rhythm 2 Delay/Echo Feedback Mono Delay/Echo Time: 0-5.5sec Stereo...

  • Page 35: Dual Programs

    About the Dual Programs The MPX 100 Dual programs combine either a Delay or Reverb algorithm with a Flange, a Pitch or a Chorus. Effects Lvl/Bal controls the relative balance of each effect in the combination. Four routing configurations are used in...
  • Page 36 Generally, the Effects Lvl/Bal knob con- trols the balance of the two effects in each dual program. In the cascade variations, rather than simply controlling balance, the knob varies the amount of the first effect or dry signal which is fed into the second effect. At center, you get delayed pitch shift This setting provides pitch...
  • Page 37 Flange-Delay VARIATIONs Deep Flange - Stereo Delay Deep Flange - Stereo Delay Deep Flange - Stereo Delay Light Flange - Ping Pong Light Flange - Repeat Light Flange - Bounce Deep Flange>Stereo Delay Deep Flange>Repeat Deep Flange>Ping Pong Deep Flange> Bounce Light Flange+Stereo Delay Ligth Flange+Ping Pong Light Flange+Repeat...
  • Page 38 Pitch-Delay VARIATIONs 5th Up/Down - Stereo Quarter-Note Octave Up/Down - Triplet Shuffle Octave Up/Down - Eighth and Triplet 3rd Up/4th Up - Ping Pong Quarter-Note 4th Up/5th Up - Triplet Rhythm 1 5th Up/6th Up - Triplet Rhythm 2 Octave Up/Down > Triplet Rhythm 1 5th Up/Down >...
  • Page 39 Chorus-Delay VARIATIONs Rich Chorus 1 - Stereo 1/4 Note Rich Chorus 1 - Dotted 1/8 Note Rich Chorus 1 - 1/8 Note and Triplet Rich Chorus 1 - Ping Pong 1/4 Note Rich Chorus 1 - Multi Repeat Rich Chorus 1 - Multi Pong Rich Chorus 1 - Stereo 1/4 Note Rich Chorus 2 - Multi Repeat Rich Chorus 2 - Ping Pong 1/4 Note...
  • Page 40 Delay-Reverb VARIATIONs Stereo 1/4 Note - Small Space Triplet Shuffle - Medium Space 1/8 Note and Triplet - Large Space Ping Pong 1/4 Note - Small Space Triplet Rhythm 1 - Medium Space Triplet Rhythm 2 - Large Space Stereo 1/4 Note > Room 1/8 Note and Triplet >...
  • Page 41 Flange-Reverb VARIATIONs Light Flange - Small Space Light Flange - Medium Space Light Flange - Large Space Deep Flange - Small Space Deep Flange - Medium Space Deep Flange - Large Space Light Flange > Large Space Deep Flange > Large Space Light Flange >...
  • Page 42 Pitch-Reverb VARIATIONs Minor 3rd to 4th - Room 4th to 5th - Room 5th to 6th - Room ±1 Octave - Medium Space Power Chords - Medium Space Manual Detune - Room ±100 > Small Space Power Chords - Large Space 4ths >...
  • Page 43 Chorus-Reverb VARIATIONs Rich Chorus 1 - Small Space Rich Chorus 1 - Medium Space Rich Chorus 1 - Large Space Rich Chorus 2 - Small Space Rich Chorus 2 - Medium Space Rich Chorus 2 - Large Space Rich Chorus 1 > Room Rich Chorus 2 >...

  • Page 44: Special Fx

    Echo The Special FX variations showcase the – flexibility and creative possibilities of the Rate (Whole Note) MPX 100. Adjust is completely different in – each of the Variations, so be sure to experi- ment with all of them. Echo –...

  • Page 45: User Programs

    Detune 12 Delay, Echo 8 Delay, Echo 12 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.

  • Page 46: Midi Operation

    MPX 100 MIDI Behavior The MPX 100 “learns” MIDI Channel, Pro- gram Change and Continuous Controllers in its Learn Mode. Any of these controls can be patched to Continuous Controllers. These buttons can also be patched to Program Change. As many as five Learn patches (for the...

  • Page 47: Assigning A Midi Channel For Program Load

    2. Send a Program Change message to the MPX 100. (The Edit LED will flash to show incoming MIDI activity.) 3. The MPX 100 learns the MIDI Channel of the transmitting device and re-assigns the Program Load function to that chan- nel.

  • Page 48: Using Program Change Messages For Program Load

    Using Program Change Messages for Program Load The MPX 100 will allow loading of all of its 240 preset and 16 User programs via stan- dard MIDI Program Change messages. It also conforms to the use of MIDI controller 32 to perform Bank Select, starting with the User bank as the first bank.

  • Page 49: Learning Continuous Controllers

    Learn Mode. (The Store LED flashes slowly and the Tap LED lights steadily to indicate Learn Mode is active.) 2. Move one of the MPX 100 front panel controls (Mix, Effects Lvl/Bal, Adjust, Bypass or Tap) to assign it to the control- ler.

  • Page 50: Activating Bypass Or Tap Functions With Program Change Messages

    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 Bypass and/or Tap.

  • Page 51: Clearing A Learned Assignment

    Clearing a Learned Assignment 1. Simultaneously press Store and Tap to enter Learn Mode. (The Store LED flashes slowly and the Tap LED lights steadily to indicate Learn Mode is active.) 2. Move the front panel control that you want to clear (Mix, Effects Lvl/Bal, Ad- just, Bypass or Tap).

  • Page 52: Midi Clock

    Connect a MIDI device which out- puts MIDI Clock (such as the MPX R1 foot controller or a MIDI sequencer) to the MPX 100 MIDI IN jack, to have the MPX 100 automatically recognize and begin to pro- cess the MIDI clocks. When you change...

  • Page 53: Midi Implementation Chart

    Lexicon MPX 100 Function Basic Default Channel Channel Mode Default Messages Altered Note Number True Voice Velocity Note ON Note OFF After Keys Touch Channels Pitch Bender Control Change Transmitted Recognized 1-16 Mode 2 X (Off=9n v=0) MIDI Implementation Remarks...
  • Page 54 Program Change True # Bank Select System Lexicon Exclusive Real-Time non Real-Time System :Song Pos :Song Sel Common :Tune System :Clock Real Time :Commands :Local ON/OFF Messages :All Notes OFF :Active Sense :Reset Mode 1: OMNI ON, POLY Mode 2: OMNI ON, MONO...

  • Page 55: Specifications

    Audio Inputs (2) Level -30dBu to +4dBu Impedance 500K unbalanced for Direct Instrument input (Unit detects a mono input on the right input) 1/4" connectors Audio Outputs (2) Level +8dBu typical Impedance 75 for Headphone output (Right only used for mono output;...

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