Lexicon MPX 100 manual

User Guide MPX 100 Dual Channel Processor Stere o 44.1kHz S/ PDIF Digital Output[...]

Lexicon Part #070-11935 Unpa cking and Inspection After unpacking the unit, sa ve all packing materials in case you ever need t o re-ship. Th oroughly inspect th e unit an d packing m aterials for signs of da mage. Report any shipment damage to the carrier at once; report equipment malfunction to your deal er. Notic e This eq uipment generat es and[...]

Program Descriptions ............................................................ 17 Single Programs .................................................................. 18 Dual Programs ..................................................................... 32 Special FX ........................................................................... 41 Us[...]

Getting Started 1 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 out pu t. Po we red by a new vers ion of Le xic on ’s proprietary Lexichip™, the MPX 100 has 240 presets with classic reverb p[...]

Input Sets the leve l of th e in coming signal. LEDs indicate accept- able signal level (green), or clipping (red). Output Controls the analog output level. Front Panel Overview VARIATION Selects program variations for the effect ba nk cur- rently sel ected b y the P ROGRAM knob (8 variations for each Single effect and 16 variations for each Dual e[...]

Setting Au dio Levels 1. Start with INPUT set to 9:00 o'clock an d OUTPUT all the way down (fully counter- clockwise). 2. Set the instrument output or effects send being input to the MPX 100 to a nominal level and p lay, or send audio to the MPX 100. The Level LEDs* should light green. If the Clip LEDs light red at this point, turn down the ou[...]

Rear Panel Connections 4 MIDI Two 5- pin DIN M IDI con n ectors are p rovided for MIDI IN and soft- ware selectable MIDI O UT/THRU. POWER Use Lexicon 9VAC power pack. OUPUT Single-ended ( unbalanced) ste reo outputs pr o vide + 8dBu typical output level. Use the right output connector fo r mono output. If no connection is m ade a t the right output[...]

Headphones A stereo signal which is adequate to dr ive headphones is available at the left output (provided no connections are made through the right output). This feature is provided as a convenience for practice purposes, and is intended to provide only modest volume. Audio Connectio ns Audio connections to the MPX 100 a re unbalanced and should [...]

Modes of Operation 6 The MPX 100 can be used as two indepe n- dent 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- tions to take advant age of this configuration. Connecting to a Balanced Co[...]

Basic Operation 7 Use the PROGRAM knob to select the Single, Dual or User effect you want. Turn VARATION to select one of 16 programs. 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 progra[...]

8 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- G R A M k n o b , V A R I A T I O N s e l e c t s 1 6 memory locations available for storing your own programs. (Wh en shi pped, Use r vari at ion s 1-16 co[...]

Use Adju st to edit the current program. Editing MPX 100 programs is easy. We've arranged the critical parameters of each program under the fr ont 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 th[...]

10 Tap Tempo Functions Varying the Rhythm The MPX 100 Tap Tempo feature al- lows you to set the delay times and modula- tion rates of tempo-based programs to the beat of the music. To set the tempo from the front panel, simply press the Tap button twice in time with the music. That’s your tempo. No more dial- ing up what “could be” the delay [...]

11 Bypass Setting Tempo via MIDI When used in conjunction with the Learn feature, Tap can be set remotely from any MIDI devic e. MIDI cont rol ler s, suc h as Lexicon's MPX R1 Foot Controller, can be used to send Continuous Controller mes- sages or Program Changes to the MPX 100 or you can send Continuous Controller or Program Change messages [...]

12 Storing Programs When you want to save a program, press Store. The Store LED will flash slowly to indicate that the M PX 100 store function is armed. (If you want to exit without saving the current program, press Store again.) Turn the PROGRAM knob to User , then use VARIATION to select one of the 16 User locations. Press Store again to save you[...]

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 wi ll 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. 13 System Mode Turn the VARIATION knob[...]

14 Variation State when Edit LED is: Setting Parameter On Off 1 Bypass Mute Bypass* 2 Patching Disabled Enabled* 3 Program Load Mute Bypass* 4 Digital Output Dry Wet* 5 MIDI OUT/THRU Out* T hru 6 MIDI Pgm Change Disabled Enabled* 7 MIDI Clock Receive Disabled Enabled* 8 Tempo Program* Global MIDI Dumps (Press Store to Transmit) 14 Dum p User Progra[...]

15 System Mode Parameters 1 Bypass Mute/Bypass This parameter sets the Bypass button (or the footswitch, or MIDI controller assigned to Bypass ) to mute the inputs, or to bypass the processed audio (passing only dry audio to the outputs). 2 Patching Disable/Enable This parameter allows you to temporarily suspend (Disable) and r estore (Enable) any [...]

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17 The 240 programs in the MPX 100 a re designed to provide a full palette of high caliber ambience, reverb, delay, pitch sh ift 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. In many cases it controls several effect parameters simultan[...]

18 Plate Plate VARIATIONs Adjust Tap 1 Small Plate Liveness – 2 Medium Plate Liveness – 3 Large Plate Liveness Predelay (1/32 Note) 4 Larger Plate Decay Time Predelay (1/32 Note) 5 Tape Slap Plate ± Decay/15ips or 7.5ips – 6 Rich Plate Decay Time Predelay (1/32 Note) 7 Large Bright Plate Decay Time Predelay (1/32 Note) 8 Vocal Plate Low Cut,[...]

19 Gate In the MPX 100, the Gate program pro- vides a fairly constant sound with no decay until the r everb is cut off abruptly. This pro- gram works well on percussion — particu- larly on snare and to ms, but be sure to experiment with other sound sources as well. * Note that audio is muted briefly when Duration is altered with Adjust . Gated re[...]

20 Hall The clean reverberation of the Hall pro- gram is designed to add spaciousness, while leaving the source material unchanged. In addition to general instrumental and vocal applications, the Hall program is a good choice for giving separately recorded tr acks the sense of belonging to the same perfor- mance. Lexicon's Hall programs recrea[...]

21 Chamber In the MPX 100, the stereo Chamber program produces an even, relatively dimen- sionless r everberation, with little change in color as the sound decays. The initial diffu- sion is similar to the Hall program, but the sense of space and size is much less obvi- ous. This characteristic, alon g with the low color of the decay tail makes Cha[...]

Ambience The Ambience program sim ulates reflec- tions from room surfaces with random reflec- tions, a gradual decay of overall level, and a gradual narrowing of the bandwidth. The variations (1-8) provide a series of rooms in increasing sizes. 22 Ambience gives warmth, spaciousness and depth to a performance without coloring the direct sound, and [...]

Room The Room program is very useful on drums and percussion and can also be a p- plied to electric guitar tracks. The variations (9-16) provide a series of rooms in increasing 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 ?[...]

Tremolo The M PX 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. As the tremolo rates of several varia- tions are set with Tap, it’s easy to match the tempo of the music. Other var[...]

Rotary The MPX 100 rotary effect is a detailed simulation of a L eslie-style cabinet. The in- put signal is split into high and low fr equency bands. The rotation effect is created by a synchronized combination of pitch shifting, tremolo and pann ing. Like the physi cal model , the high (horn) and low (drum) frequencies are “spun” in opposite d[...]

Chorus The stereo Chorus program uses six in- d e p e n de n t l y r a n d o m i z e d d e l a y v o i c e s 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 e[...]

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. All of the variations of this program (9-16) should be used with Mix set to fully Wet to achieve the full flange effect. 27 Flanging effects were or[...]

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, use the desired amount of wet/dry Mix . 28 Altering the pitch of a sound allows a variety of effects[...]

Detune The 4-voice stereo Detune program in the MPX 100 has one pair of voices p er channel. As more detune amount is applied (with Adjust ), the pair grow more out of tune, providing a lush sound witho ut the n eed for a dry signal to be mixed in. All of the variations of this program (9-16) should be used with Mix set to fully Wet to achieve the [...]

Delay, Echo 30 Delays and echoes are effects that repeat a sound a short time after it first occurs. The simplest (and oldest) delay effect is tape slap — a single repeat about 100ms after the original sound. (It was often used on Elvis’s voice and rockabilly guitar tracks.) Tape slap becomes tape echo when the output of the tape is fed back in[...]

31 When using any type of delay or echo effects with music, always pay attention to the way the repeats fall rhythmically to the beat. The most effective delay and echo patterns are those that lock in with the tempo of the tune. Delay, Echo VARIATIONs Adjust Tap 1 Mono Quarter-Note Dela y/Echo Feedback Delay Time 2 Stereo Quarter-Note Delay/ Echo F[...]

About the Dual Progr ams 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 the variations of each Dual program: Dual Stereo ( Parallel), Cascade, M ono Split and Dual Mono. V[...]

33 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. Behavior of Effects Lvl/Bal in the ca scade variations. Several points from the kn[...]

34 Flange-Delay VARIATIONs Adjust Tap Routing 1 Deep Flange - Stereo Delay Delay/Echo Feedback Delay Time (1/4 Note) 2 Deep Flange - Stereo Delay Delay/Echo Feedback Dotted 1/8 Note 3 Deep Flange - Stereo Delay Delay/Echo Feedback 1/8 Note Triplet 4 Light Flange - Ping Pong Delay/Echo Feedback Delay Time (1/4 Note) 5 Light Flange - Repeat Delay/Ech[...]

35 Pitch – Delay Pitch-Delay VARIATIONs Ad just Tap Routing 1 5th Up/Down - Stereo Quarter-Note ± 5th Delay Time 2 Octave Up/Down - Triplet Shuffle ± 1 octave Delay Time 3 Octave Up/Down - Eighth and Triplet ± 1 octave Delay Time 4 3rd Up/4th Up - Ping Pong Quarter-Note Minor 3rd to 4th Up Delay Time 5 4th Up/5th Up - Triplet Rhythm 1 4th to 5[...]

36 Chorus – Delay Chorus-Delay VARIATIONs Adjust Tap Routing 1 Rich Chorus 1 - Stereo 1/4 Note Delay/Echo Feedback Delay Time 2 Rich Chorus 1 - Dotted 1/8 Note Delay/Echo Feedback Delay Time 3 Rich Chorus 1 - 1/8 Note and Triplet Delay/Echo Feedback Delay Time 4 Rich Chorus 1 - Ping Pong 1/4 Note Delay/Echo Feedback Delay Time 5 Rich Chorus 1 - M[...]

37 Delay – Reverb Delay-Reverb VARIATIONs Adjust Tap Routing 1 Stereo 1/4 Note - Small Space Decay Time Delay Time 2 Triplet Shuffle - Medium Space Decay Time Delay Time 3 1/8 Note and Triplet - Large Space Decay Time Delay Time 4 Ping Pong 1/4 Note - Small Space Decay Time Delay Time 5 Triplet Rhythm 1 - Medium Space Decay Time Delay Time 6 Trip[...]

38 Flange – Reverb Flange-Reverb VARIATIONs Adjust Tap Routing 1 Light Flange - Small Space Decay Flange Rate (Whole Note) 2 Light Flange - Medium Space Decay Flange Rate (Whole Note) 3 Light Flange - Large Space Decay F lange Rate (Whole Note) 4 Deep Flange - Small Space Decay — 5 Deep Flange - Medium Space Decay — 6 Deep Flange - Large Spac[...]

39 Pitch – Reverb Pitch-Reverb VARIATIONs Adjust Tap Routing 1 Minor 3rd to 4th - Room 3rd to 4th Up PreDelay (1/32 Note) 2 4th to 5th - Room 4th to 5th Up PreDelay (1/32 Note) 3 5th to 6th - Room 5th to 6th Up PreDelay (1/32 Note) 4 ±1 Octave - Medium Space ± 1 octave P reDelay (1/32 Note) 5 Power Chords - Medium Space Decay Time PreDelay (1/3[...]

40 Chorus – Rever b Chorus-Reverb VARIATIONs Adjust Tap Routing 1 Rich Chorus 1 - Small Space Decay Time — 2 Rich Chorus 1 - Medium Space Decay Time — 3 Rich Chorus 1 - Large Space Decay Time — 4 Rich Chorus 2 - Small Space Decay Time — 5 Rich Chorus 2 - Medium Space Decay Time — 6 Rich Chorus 2 - Large Space Decay Time — 7 Rich Choru[...]

41 The Special FX variations showcase the flexibility and creativ e possibilities of the MPX 100. Adjust is completely different in each of the Variations, so be sure to experi- ment with all of them. Special FX Delay, Echo VARIATIONs Adjust Tap 1 Infinite Reverb High Cut Echo 2 The Abyss ± Pitch Bend – 3 Jet Flange Tone Rate (Whole Note) 4 Chor[...]

42 When shipped from the factory, the six- teen MPX 100 User locations contain dupli- cates of the following programs: User VARIATION 1 Plate 2 2 Gate 9 3 Hall 5 4 Hall 6 5 Cham ber 13 6 Ambience 3 7 Room 14 8 Tr emolo 1 9 Rotar y 9 10 Rotary 15 11 Chorus 3 12 Flange 12 13 Pitch 1 14 Detune 12 15 Delay, Echo 8 16 Delay, Echo 12 User Programs Reinit[...]

43 MIDI Operation MPX 100 MI DI Be ha vior The MPX 100 “learns” MIDI Channel, Pro- gram Change and Continuous Controller s in its Learn Mode. Any of the se co ntrols can be pa t ched to Continuous Controllers. T h e s e b u t t o n s c a n a l s o b e patched to Program Change. As many as five Learn patches (for the front panel Mix , Effects Lv[...]

44 Assigning a MIDI Channel f or Progr am Load In order to use Program Change mes- sages for Program loads as well as to control front panel buttons, the M PX 100 is de- signed to have one MIDI channel dedicated to loading programs. This is called the Pro- gram Load MIDI Channel. Although this channel can be used to receive other Program Change mes[...]

45 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 Se lect, starting with the User bank as the first bank. (For the p ur- poses of this discussion, each setting of[...]

46 Lear ning Continuous Controlle rs The MPX 100 recognizes Pitch Bend, AfterTouch and MIDI Continuous Controllers 1-31 and 33-119. To Learn a Continuous Controller: 1. Simultaneously press Store and Tap to e n te r Lear n Mode . (The St or e LED fla sh es slowly and the Tap LED lights steadily to indicate Learn Mode is active.) 2. Move one of the [...]

5. Simultaneously press Store and Tap to exit. The Store LED will flash rapidly if you have cr eated or changed any assign- ments. 47 Activ ating Bypass or T ap functions with Program Change Messages The MPX 100 recognizes MIDI Program Changes 16-127 ( 17-128 on some MIDI devices) on any channel. To assign a Pro- gram Change message to Bypass or Ta[...]

48 Cle ar ing a Lear ned Assign ment 1. Simultaneously press Store and Tap to e n te r Lear n Mode . (The St or e LED fla sh es slowly and the Tap LED lights steadily to indicate Learn Mode is active.) 3. Press Store to clear the assignment. The Store LED will flash rapidly. Learnable Front Panel controls and Assignable MIDI Sources MIDI MIDI Front[...]

49 MIDI Cloc k The MP X 100 recognizes MIDI Cloc k mes- sages and applies the tempo (40-400 BPM) to any program which utilizes the Tap-tempo feature. 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- ces[...]

Lexicon MPX 100 Functi on Transmitted Reco gnized Remarks Basic Default X 1 Learned Channel Channel X 1-16 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[...]

Program X 0-15=1-16 16-127 ignored; Program message Change True # 1-15=Program Change 1-16 for current Program Group Bank Select X O System Lexicon O O Product 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[...]

Specifications subject to change without notice. Specifications Audio Inputs (2) Level -30dBu to +4dBu Impedance 500K unb alanced for Direct Instrument input (Unit detects a mono input on the right input) 1/4" connectors Audio Outputs (2) Level +8dBu typical Impedance 75 Ω for Headphone output (Right only used for mono output; Left only used[...]