MPX 1 Multi Processor FX User Guide
Unpacking and Inspection After unpacking the MPX 1, save all packing materials in case you ever need to ship the unit. Thoroughly inspect the unit and packing materials for signs of damage. Report any shipment damage to the carrier at once; report equipment malfunction to your dealer. Precautions Save these instructions for later use. Follow all instructions and warnings marked on the unit. Always use with the correct line voltage. Refer to the manufacturer's operating instructions for power requirements.
MPX 1 Multi Processor FX User Guide
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Contents Introduction 1. Product Overview The Front Panel .................................................................................. The Rear Panel .................................................................................. Installation Notes ................................................................................ Mounting ...................................................................................... Power Requirements ..........................................................
Contents, cont'd. 4. Patching All about the MPX 1 Patch System Complete details on all of the MPX 1 System parameters Patch Jump from Edit Mode ............................................................... Selecting a Source and Destination.................................................... Changing the Range of the Source Controller .................................... Viewing Source Controller Activity ............................................... MIDI Learn — Automatic Controller Assignment .....
Global Patches ................................................................................. 5-15 MIDI Learn and Dst Edit ............................................................. 5-15 Calibrate Pedal ................................................................................. 5-16 6. MIDI Operation Selecting a MIDI Channel ................................................................... Accessing Programs ...........................................................................
Contents, cont'd. Complete descriptions of the MPX 1 Internal controllers Complete descriptions of the MPX 1 presets Check here for solutions to common problems Mod Effects ....................................................................................... Panner ........................................................................................ Auto Pan .................................................................................... Tremolo (M) and Tremolo (S) .............................
Thank you for your purchase of the MPX 1, the vanguard of Lexicon’s latest line of effects processors. The MPX 1 multi processor technology gives you multi effects the way you expect them to work — with instant access to individual effects, and the ability to run uncompromised stereo reverb at all times.
An A/B glide function is also available from the front panel — and of course we've designed presets to show this function off to its fullest. Whenever the A or B LED is lit, press the A/B button to activate the glide. The A or B LED will light whenever a program with A/B Glide is loaded. Press A/B to activate a parameter glide whenever these lights are lit. Many features are brought out under the Options button – which will light whenever options are available.
Product Overview 1 Product Overview The Front Panel Input/Output Adjust analog input and output level. Options LED lights to indicate additional options exist for the displayed parameter. Press to access options. (LED will flash while options are displayed.) Press again to exit. In Program mode, accesses database sorting selection. Effect Select: Pitch, Chorus, EQ, Mod, Delay, Reverb Buttons light to indicate effect is active. In Program mode, pressing button turns off LED and bypasses effect.
MPX 1 User Guide Lexicon The Rear Panel Balanced Inputs Input impedance is 50kΩ unbalanced, and 100kΩ balanced. Inputs accept input levels from -14dBu to +20dBu. 1/4" phone connectors and XLRs provided. S/PDIF S/PDIF format digital connectors conform to CP-340 Type II consumer standards. (44.1kHz only) REMOTE POWER IN 2.5mm connector for 9 VAC MIDI remote power. AC Power Standard 3-pin IEC power connector. 100-240V, 50-60Hz automatic switching to correct voltage range.
Product Overview Installation Notes The MPX 1 uses one EIA-standard rack space, and can be mounted on any level surface or in a standard 19 inch (483 mm) rack. If the unit is mounted in a rack or road case, support the rear of the chassis to prevent possible damage from mechanical shock and vibration. Mounting The maximum ambient operating temperature is 104°F (40°C). Provide adequate ventilation if the unit is mounted in a closed rack with heat-producing equipment such as power amplifiers.
MPX 1 User Guide Lexicon Mono Applications: Using the MPX 1 Outputs with Mono Return Virtually all of the MPX 1 programs generate stereo or dual output signals, even when driven by a mono source. For the best sonic results, the MPX 1 outputs should be connected in stereo. If you are using the MPX 1 in a mono system with only a single input, use a simple 2 x 1 mixer or a Y-connector to combine both outputs.
Product Overview Digital input level is adjustable from the Dig In Lvl screen of the Audio menu in System mode. Level can be set to Off, -89dB to +6db to optimize noise and avoid overload. Headroom Display The headroom display provides both headroom and overload information from a variety of measurement points. The information on the headroom display is selectable from the Meters Assign menu in Edit mode and the assignment made here is saved as a part of each program.
MPX 1 User Guide Lexicon Setting the Input Mode The MPX 1 can be set for stereo input, mono left input or mono right input. To set the mode, press System, select Audio, then select Input Mode. If cables are connected to both XLR and 1/4" connectors, the 1/4" inputs will override and disable the XLR inputs. Selecting either Mono setting routes the selected audio input channel (left or right) to both left and right DSP signal paths. (This is true for both digital and analog inputs.
Product Overview Setting Output Level 1. Press System and select the Audio menu. 2. Scroll to Audio Output and select Analog or Digital. 3. Press System again and select the Modes menu. 4. Scroll to Modes: Bypass and make sure that the assignment is Bypass (the default setting). 5. Press the front panel Bypass button. The button will light to indicate that bypass is engaged. 6. Press Edit, scroll to Meters Assign and select Output. 7.
MPX 1 User Guide Lexicon Configuration Connection to a mixing console's effects sends Channel Insert or Pre or Post Effects Send (R) Channel Insert or Pre or Post Effects Send (L) Channel Input or Effects Return (R) Channel Input or Effects Return (L) If you will be using the MPX 1 as your primary effects unit, and your system includes a console with one or more auxiliary (effects) sends, connect the units as shown above.
Basic Operation 2 This section is provided to get you up and running on the MPX 1 in the shortest possible time. Beginning with a menu tree to guide you through the major areas of the MPX 1, this chapter focuses on the basics that you want to get to first — finding, loading, tweaking and storing programs.
MPX 1 User Guide Lexicon Loading and Playing Pressing the front panel Program button accesses the MPX 1 library of 250 with Programs presets and user programs. In this mode, you can select and load programs, select database sorting criteria and access the "Soft Row" — a selected set of the most useful parameters for each program. You can also access Tap, A/B, Mix and Patch functions, as well as selecting and bypassing effects in the program. Each of these is described in this section.
Basic Operation The front panel Effect buttons light to show you which effect blocks are active. — When you're scrolling through programs, they'll change to show you the effects in any displayed program. Once you stop scrolling, they'll return to display of the effects that are active in the currently loaded program. Effect Bypass To bypass any active effect, press its button. The light will turn off and the effect will be bypassed. Press the button again to make the effect active again.
MPX 1 User Guide Lexicon Tap Flashing of the Tempo LED indicates that Tap is active. Press Tap twice in rhythm to change the tempo of delay or modulation parameters in the current program. A/B When A is lit, pressing the A/B button activates a parameter glide. Pressing A/B again reverses the glide. 2-4 MPX 1 tempo controls are available right on the front panel through the Tempo LED and the Tap button.
Basic Operation Soft Value Editing The MPX 1 offers access to the most useful parameters of any program without having to enter a separate Edit mode. These parameters are available from Program mode in a "Soft Row" which is accessed by pressing Value. In Program mode... From Program mode, simply press Value to display one of the Soft Row parameters of the currently loaded program. The upper line of the display will show the Effect type, the parameter name and the current parameter value.
MPX 1 User Guide Lexicon Program Sort, Search The MPX 1 has a database sorting function which allows you to sort and search and Show — Using for programs in various categories. This is a great timesaver when you're looking the DataBase specifically for guitar effects, or EQ effects, or for EQ effects for guitar. When In Program mode (with Value off)...
Basic Operation Once you've made changes to a program, such as turning an effect off, or modifying any of the soft row parameters, an edit indicator in the display (•) will appear in front of the program name. This identifies the program as having been altered since the last store procedure. This edit indicator, along with all of your changes, will disappear when you load another program. To save your changes, press Store.
MPX 1 User Guide Lexicon MPX 1 Preset Summary # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Name MPX Blue RvbEko Morph 480PrimeFlng RandomDetune Vintage Trem Tap Delay Tape Echo ParametricEQ Chorus Chambr Autowah Chrs Dialog Small Booth PCM 60 Room Tiled Room Bright Room Plate Space Ambience4 PA Short Nonlin Multigate Gate 4 PA Plate 4 PA Bright Plate Sweet+Wet Vocal Plate Snare Plate BigDrumPlate DrumgateFln
Basic Operation # 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 Name Phat Detune Detune&Dlys Detune+Hall Pitch-O-Latr S/H Pitch Uni to Chord Doubler Wet Triads Up 3 Down 5 4 Funky Comp 5th Plate 7th Octaverb Oct Cascade Power Chords EkoVerbSweep Telephone TV in Room Car Radio Capture EQ Miked Cab EQ Vocal EQ GuitarCab EQ Tone 4 Gtr Phased Place Fazer->Dl
Editing 3 This chapter describes all of the MPX 1 edit functions. As the first thing you are likely to want to modify in a program are its effects, this section starts there and then moves on to all of the functions available in Edit mode. Note that, in Edit mode, as elsewhere, the Value button acts as a toggle to allow you to assign "select" and "adjust" functions to either the knob or the < and > buttons, whichever is most convenient.
MPX 1 User Guide Lexicon To load any available Effect, press the Effect button again. The asterisk will disappear from the displayed name and the button light will return to its normal slow blinking edit state. An edit indicator is displayed to indicate that the active program has been modified. Coarse and Fine Editing of ms and Hz values Parameters whose values are displayed in ms or Hz have overall ranges of more than 1000 units.
Editing The MPX 1 Edit Menus give you access to all of the controls you need to create your own programs. Whether you want to reassign the front panel meter display, re-route the effects in a program, or create an entirely new sound, you will find the tools you need in this section. The MPX 1 Edit Menus The complete Edit mode menu structure is shown below, followed by detailed explanations of each main menu selection.
MPX 1 User Guide Lexicon Edit select: > Compare Press the > button. If the program has not been edited, the message Pgm is unchanged will be displayed. If the program has been edited, the display will change to show: Compare: Edited Original Use the < and > buttons to select and hear your edited version, or the original. To exit, press Edit to return to the main Edit menu. NOTE: If you exit with Original selected, you can view the original program parameters, but cannot edit them.
Editing Copy Effect lets you take an Effect from any program in the MPX 1 and copy it Copy Effect into the current program. To use this function, select Copy Effect from the Edit menu. Press the > button and use the knob to display any of the MPX 1 programs. The front panel Effect buttons light to show you which effect blocks are active in the displayed program. Press any lit button to display: The name of the effect from the displayed program appears on the upper line.
MPX 1 User Guide Lexicon Soft Row Parameter Assignment Parameters that you want to assign to the Program mode Soft Row for easy access are selected from the Edit mode Soft Row menu. When you first select Soft Row in Edit mode, you have direct access to all of the Soft Row parameters, exactly as in Program mode. You can scroll through these and alter values with the knob and < and > buttons. To change the Soft Row assignments, press and hold Edit with any Soft Row parameter displayed.
Editing Tempo Rate can be set internally or via MIDI Clock. If Tempo Source is set to Internal, you can dial in any tempo from 41-400 BPM, or you can press the front panel Tap button twice in rhythm to establish the rate you want (allowing you to change tempo on the fly from any mode). You can also have the value of a patch source act as a tap trigger (See Chapter 4: Patching.) or choose to have your tempo transmitted as a MIDI Clock signal to control the tempo of connected MIDI devices.
MPX 1 User Guide Lexicon DataBase — The MPX 1 allows you to individually tag all 250 programs for easy sorting by Assigning DataBase Source and/or Effect type. The DataBase controls in the Edit menu let you Source and Effect types assign your programs to any (or all) of the categories shown below.
Editing The MPX 1 allows you to reconfigure the effect blocks along audio paths of your own design. The Routing Map is a graphic display that shows routing and connections between the MPX 1 effect blocks. Use the Routing Map to change connections between individual effects and also to change the overall routing configuration of all six effect blocks as a group. All of the routing controls available in the Routing Map menu are explained in this section, along with examples of the selections you can make.
MPX 1 User Guide How to Change Routing Connections Lexicon The routing page lets you alter the connections between the inputs of the selected block and the outputs of the blocks in front of it. It is easy to think of these connections as patch cords connecting the different blocks. There are five possible connections for the inputs of any block. On the Routing Map, use the < and > buttons to select any upper case letter. (Lower case letters indicate inactive effects, which cannot be edited.
Editing In the following example we've selected one of the presets, FazerTremolo, as an illustration of the kind of programs that can be created with the MPX 1 routing and connection capabilities. Routing Example FazerTremolo Routing Map In this program, the input signal is routed into an EQ block (Crossover) where it is summed to mono. The low frequencies are sent out the left, and the high frequencies out the right.The EQ block option is set to Split, creating two parallel audio paths.
MPX 1 User Guide Notes and Tips on Routing 3-12 Lexicon 1. The number of configurations you can create is huge. The best approach to take is to think about what you want before changing anything. 2. When changing the routing options, work from left to right — from the input block to the output block. 3. The MPX 1 will only display the routing options that are available in the current configuration. For example, if all six blocks are on the upper path, the only available option will be Split.
Editing Selecting Effect Order from the Edit menu allows you to put the six MPX 1 Effect blocks in any order you wish. Press > to display the current ordering and routing configuration. An ordering display such as the one shown below will appear. Effect Order An underscore identifies the Effect block which is selected for moving to a new location. Ord p=C=e=m=D=R Effect types are represented by their initial letters. Upper case letters indicate that the Effect is active in the current program.
MPX 1 User Guide Setting the Parameters of the Internal Controllers (Knob, LFO 1 and 2, Arpeggiator, ADSR 1 and 2, Random, A/B, Sample & Hold, Env 1 and 2 Lexicon The last of the MPX 1 Edit menu selections provide controls for making individual adjustments and assignments for each of the MPX 1 internal controllers. This section describes controller editing. For detailed information on the controllers themselves, see Chapter 8. Making controller adjustments is straightforward.
Patching 4 Patching is the ability to assign a control (Source) to a parameter (Destination). This allows you to alter the value of the parameter by manipulating the control Source. For example, you can select the front panel knob as a Source and an effect's Mix parameter as a Destination. This simple patch will allow you to dynamically alter the mix of the effect whenever you turn the knob. You can create as many as five patches.
MPX 1 User Guide Lexicon Patch Jump Whenever a patched parameter is selected for adjustment in Edit mode, the from Edit Mode Patch LED will light to let you know that the parameter is being used in a patch. If you press Patch, you will "jump" directly to the patch that uses the displayed parameter so that you can view and modify the patch. Pressing Patch again will jump you back to the parameter in Edit mode.
Patching With Src selected, pressing Options will allow you to specify range limits for the controller you have selected. With the following screen displayed, use the < and > buttons to select the Min, Mid or Max field, and the knob to set the value from 0-127. The default settings of Min=0 and Max=127, cause the parameter to be controlled linearly by the controller. Reversing these values (Min=127 and Max=0) will establish inverse control over the parameter.
MPX 1 User Guide MIDI Learn — Automatic Controller Assignment Lexicon You can have the MPX 1 automatically recognize a MIDI controller as a patch Source, as well as assigning its MIDI Receive channel to match any controller with the MIDI Learn function. From the Source Activity screen, press > to access the MIDI Learn screen. With this screen displayed, simply move any active MIDI controller to automatically assign it as the Source for the current patch.
Patching For most applications, the default full-range Destination values are all you will want, as these allow your selected Source to exert direct control over the full range of parameter values. In other cases, you may want to adjust the Destination values to a more limited range, or establish a nonlinear relationship between the controller and the parameter values.
MPX 1 User Guide Lexicon Linear or Nonlinear From either of the Destination Values screens, pressing Options will allow you Control to set the control relationship between your Source and Destination, temporarily suspend the current patch, or to clear one or more patches entirely. Patch Values > Unchanged Pressing Options from either of the Destination value screens lets you determine the control relationship between the Source and Destination, and clear any or all patches.
Patching Continuing to press > will step you to the Suspend option. Selecting Suspend temporaily suspends the patch until such time as you return to the Patch System Destination Option and select Unsuspend. Suspending and Clearing Patches Continuing to press > will step you to the options: Clear 1-5, and Clear All. These allow you to select any or all patches to be cleared.
System Controls 5 The System menus shown below provide access to all of the controls which affect overall operation of the MPX 1, such as Bypass state, MIDI transmit and receive channels, as well as some unique options that make the MPX 1 adapt to your personal requirements. These controls are each explained in detail in this chapter, in the order in which they are displayed in System mode.
MPX 1 User Guide Lexicon Audio Controls The Audio menu allows you to change the settings of controls which affect the MPX 1 audio input and output characteristics. These include: configuring the inputs for stereo or mono applications, selecting analog or digital inputs and outputs, etc. The controls available are each described below. Input/clck The MPX 1 can use its own internal clock or it can reference an external clock.
System Controls Dig In Lvl is a master control for digital inputs. Select Off or a value from -89dB to +6dB to optimize the level of the digital input signal. Dig In Lvl When digital input is connected to the MPX 1 and Dig/Ext is selected in the Input/Clck menu, the ChanStatus menu allows you to determine whether or not Channel Status information received via the MPX 1 digital input is transmitted unchanged through the MPX 1 or whether the MPX 1 is to generate its own Channel Status data.
MPX 1 User Guide Lexicon Mix Each MPX 1 program has its own Master Mix and Level parameters, as well as individual mix and level settings for each Effect. These settings are stored as integral parts of the program. The Mix parameter allows you to select Program, to have each program load with its own master mix setting, or Global which allows any program Master Mix setting to become the global setting for all subsequently loaded programs.
System Controls The MPX 1 gives you an exciting approach to working with delay times and modulation parameters. You can set these parameters in beats, allowing you to control your programs in a completely musical way. Each MPX 1 program has its own Tempo parameters, with tempo settings stored as an integral part of the program. These include Tempo Rate, Tempo Source (Internal or MIDI), Beat Value and Tap Source.
MPX 1 User Guide Setup Load and Setup Store Lexicon A set of parameters from System mode, including audio parameters, Modes, MIDI parameters and your current DataBase sorting method are collectively called a "Setup". Five Setups can be stored in the unit, allowing you to quickly reconfigure the MPX 1 at any time. The Setup Load and Setup Store controls allow you to save your current configuration as Setup 1-5 and to reconfigure the MPX 1 to any of these stored states.
System Controls The LED in the Store button will flash. When you press Store the display will show: Load #n: Setup1 (Press Store) The upper line of the display shows the Setup number currently selected for loading. Turn the knob to select any Setup number 1-5. Press Store again. The display will show: New setup loaded Then the MPX 1 will return to normal operation with the new Setup parameters in effect.
MPX 1 User Guide Lexicon MIDI This menu contains all of the MPX 1 MIDI controls. The operation of each of these controls is described here. More information on working with MIDI is presented in Chapter 6. Program Change The Pgm Change control allows you to enable or disable the Reception of MIDI Program Change messages. The manner in which the MPX 1 interprets these messages is determined by your selection here. Off On Press Options to access Pgm+ and Pgm- controls and to set a program number offset.
System Controls Options: MIDI Reset The MPX 1 recognizes the “Reset All Controllers” MIDI message. When received, all patched parameters are reset to their stored values. Patched parameters may also be reset from the MPX 1 front panel —in System mode select Ctl Send from the MIDI menu and press Options, then press Yes. (The message will be transmitted from the MPX 1 as well). If you do not want to perform the reset, press Options to exit. Press Options to access MIDI Reset.
MPX 1 User Guide Lexicon Dump This control allows you to perform MIDI dumps of Current Pgm, All Programs, Map 1-3, Chain 1-10, Setup 1-5. Select whichever of these categories you want, and press Store. Press Options to select MIDI transmit speed. Press Options again to exit. Options: Xmit Speed Press Options to select one of four MIDI transmission speeds (Slow, Medium Slow, Medium Fast and Fast.) NOTE: The Device ID used in dumps is the current Receive Device ID.
System Controls The MPX 1 has 10 internal program chains, each made up of ten "links". You can assign any program to any link in the chain with the controls in this menu. A chain can be loaded with a MIDI Program Change message, or by selecting Members of Pgm Chains as a DataBase sorting option and loading the chain from Program mode. When the Members of Pgm Chains is selected as a DataBase sorting option, use the < and > buttons (or MIDI Program Change numbers) to select a chain.
MPX 1 User Guide Lexicon Initialize Selecting any item in the Initialize menu will restore portions of the MPX 1 to their factory default settings. These controls allow you to perform a complete reset of the unit to its factory defaults, or to reset only selected functions. For any displayed selection, the initialization procedure is the same.
System Controls This control allows you to clear a single User program, or any number of consecutively numbered User programs. Clear Programs From the Clear Programs screen, press > to display the following screen. Clear Programs 201 to 250 Two fields are available for selecting any number of User programs between 201 and 250. The Store button will flash. Pressing it will display the following message ... Are you sure? Yes or No Press Yes to clear the selected programs.
MPX 1 User Guide Lexicon Copy Programs This control allows you to copy a single program, or any number of consecutively numbered programs into a new location in User memory (program #s 201-250). Selections you make here will overwrite programs currently at the location(s) you designate. From the Copy Programs screen, press > to display the following screen. Copy 201 to 250 Starting at: 201 Two fields are available for selecting any number of programs between 1 and 250.
System Controls Ten global patch assignments are available which allow you to assign an external controller to the MPX 1 Master Mix or Master Level controls, or to individually control any one of the MPX 1 Effect Mix or Level controls. Global patches override, but do not clear, program patches with the same parameter Destination. Global Patches From the Global Patches screen, press > to display the following screen. Select any patch source from the available source list shown here.
MPX 1 User Guide Calibrate Pedal Lexicon This control allows you to achieve full range output of any connected 10k-100k continuously variable footpedal. From the main System menu, select Calibrate Pedal and press Yes. A display prompt will allow you to choose to continue the calibration procedure, overwriting any pre-existing pedal settings, or to discontinue the procedure. Pressing Yes in response to the display prompt displays: Move pedal from min to max . . .
MIDI Operation 6 MIDI Operation All MPX 1 parameters and programs can be accessed by MIDI. All MIDI applications require the MPX 1 to be connected with one or more MIDI devices with standard MIDI cables via the rear panel MIDI jacks. Selecting a MIDI Channel MIDI controls, such as Transmit and Receive Channel selection are available in the System mode MIDI menu. All of these controls are described in Chapter 5: System Controls. Several are repeated here for your convenience.
MPX 1 User Guide Lexicon Controlling MPX 1 Tempo Rate with MIDI Clock MIDI Tempo Control MIDI Out (MIDI Clock) MIDI In Edit mode Tempo Source set to MIDI Using the MPX 1 as a MIDI Clock Source MIDI In MIDI Out System mode MIDI Clock Send set to On Tempo Rate set in Edit mode or by Tap 6-2
MIDI Operation The configuration below shows the MIDI connections for controlling the MPX 1 simultaneously with MIDI Clocks from a sequencer, and messages from another MIDI controller. Note that the controller is set to "local control off" and the sequencer is set to "echo input".
MPX 1 User Guide Lexicon Controller Quirks Some synthesizers and controllers cannot send the full range of MIDI program change messages (1-128). Others may appear to be able to send only 32, but actually have a bank mode that does let you send all 128 program change messages. Also, be aware that some MIDI devices use a program numbering system that uses 0-127 instead of 1-128. If in doubt, see the manual for your controller.
MIDI Operation The MPX 1 has a full featured MIDI arpeggiator. It processes held notes received from MIDI IN and transmits them as arpeggios through MIDI OUT. You can process the output of the sound generator through the MPX 1, but this is not necessary to hear the effect of the arpeggiator. The Arpeggiator To use the arpeggiator, first make the MIDI connections: • Connect a keyboard or other source of MIDI notes to the MPX 1 rear panel MIDI IN.
MPX 1 User Guide Lexicon Program Change Reception of MIDI Program Change and Bank Select messages can be Messages selectively enabled/disabled from the System mode MIDI menu. The manner in which the MPX 1 interprets these messages is determined by the value of this parameter as follows: Pgm Change: Off All Program Change and Bank select messages are ignored. Pgm+ and Pgm– controllers will load the next higher or lower program in the current bank.
MIDI Operation Automation The MPX 1 will transmit SysEx automation messages when the System mode MIDI Automation parameter is set to On. Virtually all changes made by front panel operations are transmitted as MPX 1 SysEx messages. This is intended primarily for use by editor programs and in configurations where it is desirable for one or more MPX 1s to be slaved to a single MPX 1 acting as a master.
MPX 1 User Guide Dynamic MIDI Lexicon The following MIDI controllers are available as Dynamic MIDI patch sources: MIDI Controllers 1-31, 33-119 Continuous or switches: 0–127 Pitch Bend 0=max flat, 64=no bend, 127=max sharp After Touch Channel pressure: 0–127 Velocity Note On velocity value of last received note: 1-127 Last Note Note Number value of last received note: 0-127 High Note Note Number value of highest note when more than one note is on: 0-127.
MIDI Operation MIDI Implementation Chart Lexicon MPX 1 Digital Effects System Function Transmitted Recognized Remarks Basic Channel Default Changed 1 1-16 1 1-16, OMNI Mode Default Messages Altered Mode 1 X Mode 1, 3 X X 0-127 0-127 Last Note, Low Note, High Note, LGate, Gate, Trig used as controllers Note Number Velocity Note ON Note OFF O X (Off-9n v=0) O used as controller After Touch Keys Channel X X X O TSW and Touch used as continuous controllers X O used as controller OX
The Effects and Parameters 7 The MPX 1 contains a library of 57 effects, each of which is described in detail in this section. The Effects and Parameters The effects are organized into six effect types corresponding to the Effect Selector buttons on the front panel (Pitch, Chorus, EQ, Mod, Delay, and Reverb). All of the effects available in each category are listed below.
MPX 1 User Guide Lexicon Notes on Different effects require different amounts of MPX 1 processing. The following Combining Effects notes should be kept in mind when creating new combinations of effects in a program. All reverb effects have dedicated processing and can be used in combination with any other effect. (You can always add any reverb to any MPX 1 program.) The Pitch, Chorus, EQ, Mod and Delay effects share processing resources.
The Effects and Parameters In the Pitch effects: Detune (M), (S) and (D) and Shift (M), (S) and (D), Tune controls the amount of pitch shift. The Optimize parameter (an option of Tune) allows balancing of any artifacts vs. the amount of delay through the effect. Higher settings of Optimize are good for chords and low notes, lower settings minimize the delay through the effect.
MPX 1 User Guide Lexicon Shift (M), Shift (S) and Shift (D) Shift (M) The pitch shift effects are designed to provide both fine (1 cent resolution) and coarse (semitone resolution) pitch shift effects. Use them to create harmonizations, detuning, or special effects. The Tune parameters can be glided smoothly across their entire range. Try controlling Tune with a foot pedal or MIDI controller for “whammy-bar” and pedal steel effects with guitars. Shift (M) is a single-channel pitch shifter.
The Effects and Parameters Test Tone Mix 0-100% Level* Off, -89 to +6dB Dry/Wet ratio Amount of effect in the processed signal Note C0-G10 Sine wave pitch, expressed as MIDI notes (0=C0, 127=G10) Bal* -50 to +50 Relative level of left and right output attenuation Handy pitches: D#0=19.445Hz A4=440Hz B5=987.
MPX 1 User Guide Lexicon Chorus Effects The chorus effects are generally used to enhance a sound by modulating delay times and/ or frequency content in various ways. Of course, the classic effects of this type : Chorus, Flanger and Phaser are all here – along with several other variations such as: Rotary Cab, Aerosol, Orbits, Centrifuge, Comb 1 and Comb 2. All of the Chorus effects have one or two resonance parameters.
The Effects and Parameters Flanger (M) and Flanger (S) Flanger (M) Flanger (S) Mix 0-100% Level* Off, -89 to +6dB Amount of effect in the processed signal Rate 0-50Hz or 1:24-24:1 cycles/beat Flange rate or period ratio (Rate Units) Dry/Wet ratio Selects frequency or cycles/beat PW 0-100% Flange pulse width Depth* 0-100% Flange depth Phase 0°-270° In Flanger (S) sets the phase difference between the right and left flangers Res -100 to +100 Resonance Blend 0-100% Amount of fixed t
MPX 1 User Guide Lexicon Rotary Cab This effect simulates a Leslie speaker with one pair of stereo mics on the rotating low-frequency drum, and another pair on the rotating high-frequency horn. Bal sets the relative mix of Drum and Horn mics. Width controls the stereo spread of both pairs of mics. Rate and Depth 1 control the speed and depth of the rotating low-frequency drum. Rate 2 and Depth 2 control the speed and depth of the rotating high-frequency horn.
The Effects and Parameters Orbits Mix 0-100% Level* Off, -89 to +6dB Amount of effect in the processed signal Rate1 0-50Hz or 1:24-24:1 cycles/beat Left Mod and Pan rate or period ratio (Rate 1 Units) Dry/Wet ratio Selects frequency or cycles/beat PW 1 0-100% Sync1 -120° to +120° Phase difference between left LFO Mod and Pan Dpth1* 0-100% Left Mod and Pan depth Rate2 0-50Hz or 1:24-24:1 cycles/beat Right Mod and Pan rate or period ratio (Rate 2 Units) Left Mod and Pan pulse width S
MPX 1 User Guide Lexicon Centrifuge1 and Centrifuge2 Centrifuge1 The Centrifuge effects have a pair of modulated left and right delays routed into a single auto panner. In these effects, mod and pan rate and depth (Rate1, Depth1) are modulated by an additional set of rate and depth controls (Rate2, Depth2). These can create unique chorus and flanger effects with complex, undulating modulation rhythms.
The Effects and Parameters Comb 1 and Comb 2 Comb 1 Comb 2 Mix 0-100% Level Off, -89 to +6dB Dry/Wet ratio Amount of effect in the processed signal LoCut 100-10000Hz Corner frequency of the low cut filter HiCut 100-10000Hz Corner frequency of the high cut filter Comb 0-100 A microdelay which positions the notch Notch -100 to +100 Increases the audibility of the notch Ratio of filter and delay output levels: Notch -100 -50 0 50 100 Rate 0-50Hz or 1:24-24:1 cycles/beat (Rate Units) Filt
MPX 1 User Guide Lexicon EQ Effects At its simplest, equalization is the process of cutting and boosting certain frequencies to make portions of program material more or less audible. This is generally accomplished by combining filters which affect a specific “band” of frequencies together with gain controls.The three types of filters commonly used to perform basic EQ functions are: High Cut, Low Cut and Bandpass/Notch. High Cut High cut filters remove frequencies above a fixed level.
The Effects and Parameters EQ Tips (for tweakers only) About “Q” Q is a measure of the sharpness of an EQ curve. The larger the Q value, the sharper the curve. In some situations it is convenient to think of Q in terms of bandwidth in octaves. Some examples: Q 0.1 0.4 0.7 1.4 2.9 4.3 5.8 7.2 8.7 10.0 MPX 1 Parametric EQ: Gain Fc=1000Hz Q=1.
MPX 1 User Guide Lexicon 1-Band (M), 2-Band (M), 3-Band (M) and 4-Band (M) The 1-Band (M) effect provides a single band of double-precision parametric EQ. 2-Band (M), 3-Band (M) and 4Band (M) have two, three and four bands, respectively, of double-precision parametric EQ. Each effect has adjustable center frequency, Q, boost/cut and filter type (low shelf, band, high shelf).
The Effects and Parameters SweepFilter Mix 0-100% Level* Off, -89 to +6dB Dry/Wet ratio Amount of effect in the processed signal Fc* 20-20000Hz Corner frequency offset of filter FRes* 1-100 Filter resonance: 7=a maximally flat filter Mod* 20-20000Hz added to corner frequency offset to produce corner frequency Scale* -100 to +100% scales Mod Pan* 50L to C to 50R Left/right pan control SweepFilter simulates a Moogtype resonant low-pass filter.
MPX 1 User Guide Lexicon Fc Splitter The Fc Splitter effect splits a mono input into a low-passed output on the left channel and a highpassed output on the right, with independent control of the corner frequencies of both filters. If the corner frequencies are the same, and the balance is set to 0, the frequency response will be flat when the two outputs are summed. Bal controls the relative level of left and right outputs. When Bal=0, the left and right outputs are not attenuated.
The Effects and Parameters The Tone effects allow you to create a unique set of EQs to make simple tone adjustments. The 2-Tone and 3-Tone Effects The 2-Tone effects split the signal into two bands, one low and one high, with the controls to create low or high shelving filters. Gain1 cuts or boosts all of the frequencies below the frequency selected by Fc and Gain 2 cuts or boosts all frequencies above this point, creating a basic bass/treble control.
MPX 1 User Guide Lexicon The 3-Tone effects have two selectable frequency selectors (Fc1 and Fc2) which split the signal into three bands controlled by Gain1, Gain2 and Gain3. The diagram below shows a few of the infinite variety of EQ curves which can be obtained from the 3-Tone effects.
The Effects and Parameters The Mod effects are a collection of pan, gain, and volume processors that can be modulated with built-in contollers or with any MPX 1 patch source. Mod Effects With the exception of Overdrive, all Mod effects require relatively small amounts of processing resources and can therefore be used in combination with many other effects. Panner The Panner effect has the left input panned to outputs with Pan 1, right input with Pan 2.
MPX 1 User Guide Lexicon Tremolo (M) and Tremolo (S) In Tremolo (M), the left and right inputs are mixed together, then a local sinewave generator modulates the volume. In Tremolo (S) the left input is modulated by a local sinewave generator before going to the left output. The right input is modulated by sin, cos, -sin, or -cos, depending on the Phase parameter. These are the smallest mono and stereo effects with interpolated output level controls.
The Effects and Parameters Volume (M), Volume (S) and Volume (D) Volume (M) Volume (S) Volume (D) Mix 0-100% Dry/Wet ratio Level* Off, -89 to +6dB Amount of effect in the processed signal Vol* 0-100% Amount of effect in the processed signal The Volume effects are included here for convenience when constructing programs that don't use Modulation effects. These effects are simple, but have many applications.
MPX 1 User Guide Lexicon Delay Effects The Delay effects include delay, echo, looping and ducking effects. Delays are high quality digital delays. Echoes are similar to delays, but low-pass filters have been added to simulate the high-frequency rolloff that occurs naturally in acoustic echoes and in echoes created with analog tape. All MPX 1 Delay effects allow you to choose how delay times will be displayed. Select any Time parameter and press Options.
The Effects and Parameters Delay (M), Delay (S) and Delay (D) Delay (M) Delay (S) Delay (M) is a simple mono delay with feedback. Delay (S) is a simple stereo delay with feedback. Delay (D) is a dual delay with feedback, crossfeedback, independent output level adjusts, and panners.
MPX 1 User Guide Lexicon Echo (M), Echo (S) and Echo (D) The Echo effects are similar to the Delay effects, except the feedback inputs are sent through 1pole low-pass filters. Damp provides control over the cutoff frequency of the filter. (Increasing Damp lowers cutoff frequency.
The Effects and Parameters Looper Mix 0-100% Level Off, -89 to +6dB Amount of effect in the processed signal Time 0-2000ms 1:24-24:1echo/beat 0-2260 ft, 0-688 M Delay time (Time Units) Dry/Wet ratio In the Looper effect InMix controls the ratio of input to feedback into the delay. This parameter is ducked by the input level, so that louder signals route the input signal into the delay, and softer signals route the feedback signal into the delay. When Sense is at 0, no ducking will occur.
MPX 1 User Guide Lexicon Reverb Effects The MPX 1 Reverb effects provide a full suite of reverberation and ambience algorithms. All of the reverbs are true stereo in that differerent processing is applied to the left and right input signals. Dedicated processing resources are allocated to the reverb effects so that you can always load any reverb into any program, regardless of what other effects are loaded.
The Effects and Parameters Plate Mix 0-100% Level Off, -89 to +6dB Dry/Wet ratio Amount of effect in the processed signal Size 4.0-76.0 meters Length of room Link Off, On Scales Decay and Spred with Size Diff 0-100% Increase of initial echo density over time P Dly 0-250ms Delay inserted before the onset of reverberation Bass 0.2-4.0x Reverb time for low frequency signals Decay 0.07-65.4s Length of the reverb tail Xover 30Hz to 19.
MPX 1 User Guide Lexicon Ambience The Ambience effect 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. The effect simulates reflections from room surfaces, with random reflections, a gradual decay of overall level, and a gradual narrowing of the bandwidth.
MPX 1 Internal Controllers 8 This chapter describes all of the MPX 1 internal controllers. Examples of presets which make use of a controller are noted to the side of each description. The controls for making individual adjustments and assignments to the controllers are available in the Edit menu and are described in Chapter 3: Editing. MPX 1 Internal Controllers The Knob controller allows you to define your own custom patch controller. Once defined, you can place it in the Soft Row with its own label.
MPX 1 User Guide Lexicon Arpeggiator Arpeggiator Modes and V Src Off: Arpeggitator is disabled Up: Notes play in ascending order Down: Notes play in descending order The MPX 1 arpeggiator requires a MIDI note source (keyboard, sequencer, etc.) to be connected to the MIDI IN connector. Once connected it will arpeggiate keys that are held down.
MPX 1 Internal Controllers These ADSR-type envelope generators can be gated on and off via any MPX 1 patch source. Aside from the usual attack, decay, sustain and release parameters. The MPX 1 ADRs include additional controls that allow you to further customize their behavior. ADR1 and ADR2 ADR Modes Off: Note that the rate parameters (attack, decay and release) are logarithmic. The highest value, 100, is very fast (less than a millisecond). The lowest value, 0, is very slow (more than two minutes).
MPX 1 User Guide Lexicon A/B Glide Modes The A/B Glide controller is linked to the front panel A/B button and LEDs. Pressing the button toggles the state of the controller between A and B, as indicated by the LEDs. Trig: Toggles between A and B whenever A/B button is pressed or OnSrc value rises above OnLvl. When the controller is at A, its output is 0. When it is at B, its output is 127. Controls are provided to allow you to determine the rate at which it glides from A to B and from B to A.
MPX 1 Internal Controllers The sample and hold controller is similar to functions found in many synthesizers. Its output is derived by “sampling” the value of an input signal.The MPX 1 version allows you to select any controller as the input signal, and also allows you to select any controller to trigger the sample. S/H A typical use would be to use LFO1 Sine as the input signal and LFO2 Pulse as the sampling clock.
MPX 1 User Guide Footswitch Controllers Lexicon The rear panel Foot Switch jack can be connected to as many as three independent analog switches. Each switch appears as two simultaneous patch sources. Tog1: Value toggles between 0 and 127 at each off/on transition of foot switch 1. Tog2: Value toggles between 0 and 127 at each off/on transition of foot switch 2. Tog3: Value toggles between 0 and 127 at each off/on transition of foot switch 3.
MPX 1 Internal Controllers 9 1 MPX Blue This preset illustrates the power and complexity of the MPX 1 with 6 simultaneous effects blocks, split-path routing, and 5 patches to the internal controllers. Centrifuge and plate on one path, and a filtered, autopanned delay on the other path create a unique effect for vocals or instruments. Preset Descriptions 2 RvbEko Morph Press A/B to moprh between a long decay reverb and echoes.
MPX 1 User Guide Lexicon 14 Tiled Room A small bright room for percussion and tight rhythm guitar. 15 Bright Room A small, airy room. An excellent general purpose ambience effect. 16 Plate Space A huge, bright, loooong plate reverb. 17 Ambience4 PA Optimized for PA, this program adds “air” around vocals or other sources without making them muddy. The ambience effect is followed by a stereo 2-band EQ so you can fine tune to the room. Press Value to get to the critical controls fast.
MPX 1 Internal Controllers 30 Percus Place A bright medium-sized room for percussion. 31 Snare Gate Fatten up the snare with this short, EQ’d, gated Chamber. Controls for the gate rates and sensitivity, as well as reverb and EQ settings are in the Soft Row. 32 Md Drumroom A medium-sized, bright room for drums. 33 Miked Room Adds a realistic sense of space to direct sources.
MPX 1 User Guide Lexicon 46 Small Hall The name says it all. 47 Medium Hall A bright, empty medium-sized hall. 48 Large Hall A very large space with a little extra emphasis in the low end. 49 Piano Hall A long smooth hall optmized for acoustic piano. Stereo EQ follows the reverb so you can fine tune the tone or the reverberation to fit the mix. 50 Rich Hall A large bright smooth hall. 51 Concert Hall Big and rich – great for vocals, piano and acoustic instruments.
MPX 1 Internal Controllers 64 DoubleEQ Rvb A bright, EQ’d and slightly predelayed small room reverb. 65 Rev Wahtouch A bright reverse reverb through a wah. The wah filter is controlled by input level. 66 Tap GatedRvb A tempo-contolled LFO is used as a rhythmic gate to a large plate. The gate is opened every other beat for the duration of an eighth-note. Use this program to add reverb to selected beats of a stereo source. Press Tap twice to sync up with the beat.
MPX 1 User Guide Lexicon 78 EkoSweepFltr This program employs the 4-pole resonant sweep filter. Its frequency is swept by the output level of the dual delay that feeds into it – and it’s inside the delay feedback loop! Way cool with percussive sources. Be sure to check this one out with guitar and bass too. 79 Rockabilly Single slap tape echo combined with some tasty ambience. 80 Guitar Solo Detune, echo and reverb, combined for melodic guitar solos.
MPX 1 Internal Controllers 93 Rubberate A comb flange controlled by input level with slight delays and ambience. 94 FlangeNonlin A flange fed into a nonlinear reverb. 95 TalkinFlange A throaty vowel effect controlled by input level. Works well with percussive or melodic sources. 96 Tape Flange Simulated version of over-the-top analog tape flanging. 97 CircleFlange A resonant multiswept high flange in a small reverberant space.
MPX 1 User Guide Lexicon 109 Up 3 Down 5 Standard triad harmony. Press A/B to change the third from major to minor. 110 4 Funky Comp A detuned and phased signal fed into a very very small predelayed hall reverb. 111 5th Plate A pitch shifter tuned to a fifth, fed into a medium plate. 112 5th Octaverb A larger hall reverb fed into pitch shifters set to fifth down and octave up. 113 Oct Cascade Octave pitch shifts recirculated through delays. A/B selects between octave below or above the original pitch.
MPX 1 Internal Controllers 124 Phased Place A small room with predelay and phase shifting. 125 Fazer->DlyPan Phase shifter, tap tempo echo and panners are combined to produce a richly undulating wash of tone. Dry and delayed versions of the phase shifter are panned separately and chase each other through stereo space. Press Tap to change the echo rhythm. Press A/B to glide between fast and slow pan rates. 126 FazerEkoRvb A cool combination of classic effects.
MPX 1 User Guide Lexicon 139 OD Rotary A rotary speaker effect with some built-in overdrive. Press A/B to switch between fast and slow speeds. This program is already set up to use MIDI AfterTouch to toggle between slow and fast speeds. 140 Rotary Cab This program emulates a Leslie speaker and adds a bit of Chamber to fatten up the sound. MIDI Controller 68 (Legato) is pre-patched to A/B for remote fast/slow of the rotating speakers.
MPX 1 Internal Controllers 154 Submarine Who could have possibly fathomed an underwater sound as deep as this? 155 50’s Sci Fi Inspired by the score of “Forbidden Planet”. This preset plays a cascade of descending pitches all by itself — complete with echoes and reverberation! Press A/B to turn off the pitch generator and process the input of your choice. 156 Synthis izer A randomly swept filter with mono flange and reverse reverb. Great with sustained sounds.
MPX 1 User Guide Lexicon Programs 165-199 each contain a single effect. While each of these programs is meant to be used alone, many can be used as building blocks when you create your own multieffect programs from scratch. Use Copy Effect in Edit mode to copy different combinations of these effects into a single program. 165 ClassicDtune A simple, but very useful effect. Use it to fatten up just about anything in a PA or recording mix.
MPX 1 Internal Controllers 181 Wah Pedal The wah effect, patched up for pedal control. 182 Pedal Filter Four pole resonant filter with pedal-controlled cut-off frequency. A very analog sounding effect. 183 3-Tone A simple low, mid, high tone control. 184 LFO Filter A low pass filter modulated by an LFO. 185 RumbleFilter EQ with very steep roll-off below 50 Hz created by cascading four low shelf filters. Frequency control is in the Soft Row. For best results, set all four to the same frequency.
MPX 1 User Guide Lexicon 199 Tight Plate A nice short plate reverb for drums and percussion. 200 Clean Slate Want to start from scratch? This one’s as empty as they get.
Troubleshooting 10 Troubleshooting This chapter is intended primarily to help you recognize some common error states which can be corrected from the MPX 1 front panel, or by simple means such as cable replacement. Any error states which are not covered here should be referred to your local dealer or Lexicon Customer Service. In a low-voltage, or "brown-out" condition (less than 40VAC), the MPX 1 will freeze in its current state. None of the controls will have any effect.
MPX 1 User Guide Lexicon The MPX 1 does not transmit SysEx Automation commands. Check the Automation setting (and the Xmit Device ID selection) in the System mode MIDI menu. Operational Problems The MPX 1 will not lock onto an incoming digital signal. Check the cables that you are using. DO NOT USE ANALOG AUDIO CABLE TO CONNECT DIGITAL AUDIO. Check to make sure that your input signal complies with S/PDIF format standards. The MPX 1 will only lock onto valid 44.1kHz signals.
Specifications 11 MPX 1 Specifications Audio Input Connectors: Impedance: CMRR: 1/4 inch T/R/S phone jacks (2), XLR 3-wire balanced (2) +4dB/BAL switch position: 100kΩ -10dB/UNBAL switch position: 50kΩ +4dB/BAL switch position: -2dBu min for full scale, +20dBu max -10dB/UNBAL switch position: -14dBu min for full scale, +8dBu max +4dB/BAL switch position: 40dB minimum, 10Hz to 20kHz Connectors: Impedance: Levels: 1/4 inch T/R/S phone jacks (2); XLR 3-wire balanced (2) 600Ω, unbalanced +18 dBu max, full
MPX 1 User Guide Lexicon Internal Audio Data Paths Control Interface Conversion: DSP: S/PDIF I/O: 18 bit A/D, 20-bit D/A 32 bits 24 bits MIDI: 7-pin DIN connector for MIDI IN/powered bidirectional remote 5-pin DIN connectors for MIDI THRU and OUT 1/4 inch T/R/S phone jack for 3 independent footswitches 1/4 inch T/R/S phone jack (10kΩ min, 100kΩ max impedance) Footswitch: Foot pedal: Remote Power In: General Dimensions: Weight: 2.5mm barrel for 9VAC remote power 19.0"W x 1.75"H x 9.
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