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LXP-15 II
Multi-Effects
Processor
Owner's
Manual

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  • Page 1 LXP-15 II Multi-Effects Processor Owner's Manual...
  • Page 2 DO NOT DEFEAT OR REMOVE ELECTRIC SHOCK, DO NOT EXPOSE GROUND PIN ON THE POWER PLUG. THE UNIT TO RAIN OR MOISTURE. Lexicon Inc. Copyright 1994 3 Oak Park All Rights Reserved. Bedford, MA 01730USA Telephone 781-280-0300 Lexicon Part #070-10273 Fax 781-280-0490...
  • Page 3: Safety Suggestions

    Safety Suggestions Read Instructions Read all safety and operating instruc- by the manufacturer. tions before operating the unit. Servicing Do not attempt any service beyond that described Retain Instructions Keep the safety and operating instruc- in the operating instructions. Refer all other service needs to tions for future reference.
  • Page 4 LXP-15 II Multi-Effects Processor Owner's Manual...
  • Page 5: Table Of Contents

    Contents Introduction Installing the LXP-15 II Unpacking • Mounting • Power ................ 1-1 Front Panel Controls ..................1-2 Rear Panel Connectors ..................1-3 MIDI Connections .................... 1-4 Audio Connections ................... 1-4 Front Panel Operation Definition of terms .................... 2-1 Setting Audio Levels ..................2-2 The LXP-15 II Display ..................
  • Page 6: Introduction

    Introduction Congratulations on your purchase of the LXP-15 II Multi-Effects Processor! You are about to experience superb sound quality and a full range of reverb, pitch shifting, and delay effects, coupled with fast, intuitive editing of preset sounds and an industry-leading MIDI implementation. The LXP-15 II offers a rich and distinctive palette of special effects, including 128 preset effects programs to get you started.
  • Page 7: Installing The Lxp-15

    Installing the LXP-15 II Installing the LXP-15 II After unpacking the LXP-15 II, save all packing materials in case you ever need Unpacking to ship the unit. Thoroughly inspect the LXP-15 II and packing materials for signs of damage. Report any shipment damage to the carrier at once. The following accessories are included with the LXP-15 II: 1.
  • Page 8: Front Panel Controls

    LXP-15 II Owner's Manual Lexicon LXP-15 II Front Panel Controls Output Controls the signal level View Input sent to the LXP-15 II out- Used to display alternate POWER Sets the audio input level. puts. screen information. Power on/off. ADJUST PAGE...
  • Page 9: Rear Panel Connectors

    Installing the LXP-15 II LXP-15 II Rear Panel Connectors MIDI IN Receives MIDI informa- tion from other MIDI Outputs (L and R) equipment such as mas- Single-ended (unbal- ter keyboard controllers, anced) stereo outputs pro- MIDI THRU MIDI OUT MIDI foot controllers, se- vide +4dBu nominal out- Passes any MIDI data re- Transmits MIDI data to...
  • Page 10: Midi Connections

    LXP-15 II Owner's Manual Lexicon MIDI Connections MIDI connections are dependent on your applications, and on the equipment available in your system. For examples of MIDI system connections, see Chapter 6: MIDI Operation. Audio Connections This section outlines several connection possibilities for the LXP-15 II. Because each sound system is unique, we recommend experimentation to arrive at the best configuration for your system.
  • Page 11 Installing the LXP-15 II Connection to a mixing console's effects sends Channel Input or Effects Return (R) Channel Input or Effects Return (L) Effects Send Input (L or R) R Output L Output ADJUST PAGE POWER Reverb INPUT OUTPUT HEADROOM Level Pitch/EQ Setup...
  • Page 12 LXP-15 II Owner's Manual Lexicon Connection between instrument and console Channel Input (pan right) Channel Input (pan left) LXP-15 LXP-15 L Output R Output ADJUST PAGE POWER INPUT OUTPUT HEADROOM Reverb Level Pitch/EQ Setup Patch 1 LXP-15 exicon Store Patch 2...
  • Page 13 Installing the LXP-15 II Connection between instrument and amplifier Guitar Output ADJUST PAGE POWER Reverb INPUT OUTPUT HEADROOM Level Pitch/EQ Setup Patch 1 LXP-15 exicon Store Patch 2 Name Patch 3 VIEW Global LXP-15 II Input Patch 4 MIDI (L or R) LXP-15 II LXP-15 II L Output...
  • Page 14 LXP-15 II Owner's Manual Lexicon Connection between instrument preamp and power amplifier(s) WARNING! Never connect speaker outputs from a guitar amp to the LXP-15 II. Doing so can cause serious damage which is not covered by the LXP-15 II warranty. On some guitar amplifiers it is very easy to accidentally use a speaker output instead of a direct or effects output.
  • Page 15 Installing the LXP-15 II Connection between drum machine and console Console Inputs Console Inputs LXP-15 II Outputs LXP-15 II Outputs (L and R) (L and R) ADJUST PAGE POWER ADJUST PAGE POWER INPUT OUTPUT HEADROOM Reverb INPUT OUTPUT HEADROOM Reverb Level Level Pitch/EQ...
  • Page 16 LXP-15 II Owner's Manual Lexicon 1-10...
  • Page 17: Front Panel Operation

    Front Panel Operation Front Panel Operation Terms used in this manual Algorithm The LXP-15 II contains several algorithms . An algorithm is a set of instructions that tells the LXP-15 II's microprocessor how to process the input signal. One algorithm produces pitch/delay, another produces gated reverb, etc.
  • Page 18: Setting Audio Levels

    LXP-15 II Owner's Manual Lexicon Setting Audio Levels The wide range of adjustment available with the LXP-15 II INPUT and OUTPUT controls allow it to be used with virtually any kind of equipment found in the studio or on the road.
  • Page 19: The Lxp-15 Ii Display

    Front Panel Operation On most of the LXP-15 II display pages, three lines of alphanumeric information The LXP-15 II Display are available: 1. System status 2. Parameter names 3. Parameter settings The front panel VIEW button allows you to choose between display of the first and second, or the second and third lines.
  • Page 20: The Page Knob

    LXP-15 II Owner's Manual Lexicon The PAGE knob has 16 labeled settings. These selections are grouped into The Page Knob three basic functional areas. The upper section provides for selection of the available parameters which define the sound of each algorithm (Reverb, Pitch EQ, Delay, Level, Modulation, and Algorithm).
  • Page 21: Presets And User Setups

    Front Panel Operation Presets and User Setups Selecting LXP-15 II Any one of 128 preset setups can be selected by the PAGE and ADJUST knobs presets on the front panel. To select a preset, first turn PAGE to SETUP . The following display will appear: Preset # Name...
  • Page 22 LXP-15 II Owner's Manual Lexicon Loading a preset If you have chosen a preset with "Pre scan" selected, press the button directly below "Load" to load it. If you made your selection with "Preset" selected, you're all set, since this mode automatically loads the preset you've selected. (For...
  • Page 23 Front Panel Operation If you want to keep this modified preset as a new setup, it is a good idea to assign Naming your new setup it a new name before storing it. To change the name of a setup, turn PAGE to "Name".
  • Page 24: System Parameters

    LXP-15 II Owner's Manual Lexicon System Parameters To access LXP-15 II System Parameters,simply turn the PAGE knob to "Sys". The following display will appear: MIDIchn Contrst Bright MemProt Update (1-16,OMNI) (1-16) (0-15) (On/Off) (On/Off) Pressing the button directly beneath any of these displayed items will select that item for alteration with the ADJUST knob.
  • Page 25: The Algorithms

    The Algorithms The Algorithms The LXP-15 II contains five effects algorithms: Delay/Reverb, Pitch/Delay, Gate, Plate, and Chorus Delay. When a preset or register is loaded, its algorithm is shown in the top line of the display. (See Chapter 5: The Presets for a list of the algorithms used in each preset.) The algorithm parameters are grouped by function onto five pages: Delay, Pitch EQ, Reverb, Levels and Mod.
  • Page 26 LXP-15 II Owner's Manual Lexicon The routing and mixing of input and output signals for all algorithms are controlled by the five parameters found on the “Level” page. As these parame- ters are common to all LXP-15 II algorithms, they are described first. The algorithm-specific parameters will be described with each algorithm.
  • Page 27: Delay/Reverb

    The Algorithms To get some idea of the types of sounds and effects that can be created with Delay/Reverb the Delay/Reverb algorithm, be sure to listen to and experiment with presets built on this algorithm. (See Chapter 5: The Presets. ) The Delay/Reverb algorithm consists of an equalizer in series with a unique glide delay line and reverb simulator.
  • Page 28 LXP-15 II Owner's Manual Lexicon Delay/Reverb parameters Glide Delay:The master predelay for this algorithm, providing up to 683ms of delay. Glide Delay produces pitch shift effects while it is being modulated. Controlling Glide Delay with the LFO can produce vibrato, chorus and flanging effects.
  • Page 29 The Algorithms Size: Sets the rate of buildup of diffusion after the initial period (which is set by Diffusion). It also acts as a master control for Decay. Because of this link, Size changes a reverb sound from very large to very small. Generally, you should set Size before adjusting anything else.
  • Page 30: Pitch/Delay

    LXP-15 II Owner's Manual Lexicon To get some idea of the types of sounds and effects that can be created with Pitch/Delay the Pitch/Delay algorithm, be sure to listen to and experiment with presets built on this algorithm. (See Chapter 5: The Presets .)
  • Page 31 The Algorithms DELAY Predely PdlyFbk Delay L Feedbak Delay R 0-1.04s 0-100% 0-325ms 0-100% 0-325ms (64 s steps) (20 s steps) (20 s steps) PITCH EQ Pitch Intervl PchFine HiCut LoCut On, Off -2oct to +1oct -64 to +63 320Hz-11.6kHz, Full, (in semitones) (128 steps)
  • Page 32 LXP-15 II Owner's Manual Lexicon Pitch On/Off: Enables the pitch shifter. Selecting “Off” bypasses the pitch shifter and the small delay associated with it. Interval: Adjusts the pitch shift in semitone increments from two octaves below to one octave above the original pitch. Control this parameter with Last Note, High Note or Low Note for MIDI harmonizer or loop sampler effects.
  • Page 33: Gate

    The Algorithms Gate To get some idea of the types of sounds and effects that can be created with the Gate algorithm, be sure to listen to and experiment with presets built on this algorithm. (See Chapter 5: The Presets.) The Gate algorithm is a reverb effect with a fairly constant sound and no decay until the reverb is cut off abruptly.
  • Page 34 LXP-15 II Owner's Manual Lexicon Gate parameters Predelay: A predelay providing up to 262ms of delay. It is located after Treble and Diffusion and before the gated reverb . Relatively short predelay times (60ms or less) will add depth to gate effects that use a mix of wet and dry signal.
  • Page 35: Plate

    The Algorithms To get some idea of the types of sounds and effects that can be created with Plate the Plate algorithm, be sure to listen to and experiment with presets built on this algorithm. (See Chapter 5: The Presets.) The Plate algorithm is a reverb simulator that produces reverb effects with the characteristic sound of metal-plate reverberators.
  • Page 36 LXP-15 II Owner's Manual Lexicon Predelay: Predelay for the plate. When creating patches, Predelay is controlled Plate parameters from two patch page parameters. Pdlyhi provides coarse control over the entire delay range for the parameter (0-262ms). Pdly provides fine control over a smaller range (3.96ms).
  • Page 37: Chorus Delay

    The Algorithms To get some idea of the types of sounds and effects that can be created with the Chorus Delay Chorus Delay algorithm, be sure to listen to and experiment with presets built on this algorithm. (See Chapter 5: The Presets.) The Chorus Delay algorithm is a six voice chorus configured as three stereo pairs.
  • Page 38 LXP-15 II Owner's Manual Lexicon Chorus Delay parameters Delay 1: Delay setting for the first pair of chorus outputs providing up to 794ms of delay. Also the base delay setting for the Delay 2 and Delay 3. When creating effects with multiple delay settings, use Delay 1 to set the shortest delay.
  • Page 39: Creating Sounds And Effects

    Creating Sounds and Effects Creating Sounds and Effects The presets in the LXP-15 II provide you with a wide range of sounds and effects which you can use right out of the box. You can create new sounds simply by calling up one of these presets and experimenting with the parameters until you get a sound that you like.
  • Page 40 LXP-15 II Owner's Manual Lexicon Reflections When a sound is reflected from walls and other surfaces, it loses some of its high frequency content. If the surface is soft, or padded, such as a curtain or rug, more high frequency content will be lost than if the surface is hard like tile or paneling.
  • Page 41 Creating Sounds and Effects Vibrato is the effect produced by small, regular variations in a sound’s pitch; Vibrato guitar vibrato, for example, is created by alternately stretching and relaxing the strings. The LXP-15 II can create automatic regular vibrato for a single instru- ment, or mix of sounds, by means of sine wave modulation (LFO) of Glide Delay or Pitch fine.
  • Page 42 LXP-15 II Owner's Manual Lexicon Resonant Effects Singing in the shower is one way to obtain a moderate, natural resonant effect. Startling resonances are possible with the LXP-15 II by using short delay times with a lot of feedback. This causes a build-up of fundamental notes and harmonies whose period (the time for one cycle) is equal to the set delay time.
  • Page 43 Creating Sounds and Effects A sound source can be located along two dimensions in the stereo field: lateral Localization (left–right) and frontal (near–far). Lateral perception of a sound is affected by relative differences between left ear and right ear perception of loudness and the arrival time of sound from a single source.
  • Page 44: Patching

    LXP-15 II Owner's Manual Lexicon Patching, as described previously, is the ability to assign a control ( Source ) to Patching any LXP-15 II parameter ( Destination ). This allows you to alter the value of the parameter by manipulating the control Source. For example, you can use a foot pedal as a Source and ouput level as a Destination.
  • Page 45 Creating Sounds and Effects Source Description Type InLevl internal controller input envelope follower Foot 5 rear-panel analog controller slider or switch Foot 4 rear-panel analog controller slider or switch Foot 3 rear-panel analog controller slider or switch Foot 2 rear-panel analog controller slider or switch Foot 1 rear-panel analog controller...
  • Page 46 LXP-15 II Owner's Manual Lexicon The LFO Source is an internally generated low-frequency sinewave. The LFO rate is variable from 0.03Hz to 4.84Hz. The LFO will produce smooth, continuous changes of a parameter value. Use it to create such effects as vibrato, chorus, and flange.
  • Page 47 Creating Sounds and Effects Analog Controllers Each of the five rear-panel foot controller phone jacks can be connected to any compatible analog footswitch or pedal. These correspond to Sources Foot 1 through Foot 5. Foot pedals and switches allow you to control parameters during performance while keeping your hands free.
  • Page 48 LXP-15 II Owner's Manual Lexicon Slider Sources correspond to some type of slider, pedal or wheel on the MIDI MIDI Sliders instrument. The output is determined by the physical position of the slider or wheel. Most sliders and wheels are implemented as unidirectional controllers.
  • Page 49 Creating Sounds and Effects MIDI Pressure After Touch and Breath Sources correspond to pressure-type controllers on the MIDI instrument. After Touch produces output based on how hard the keys of a MIDI controller are pressed down after the initial velocity. Breath produces output based on how hard you blow into a wind controller.
  • Page 50 LXP-15 II Owner's Manual Lexicon MIDI Velocity The Velocity Source generates output based on the Note On velocity transmitted by the MIDI instrument. Depending on the type of controller, this corresponds to how quickly a key is depressed, how hard a string is picked, how hard a percussion pad is struck, etc.
  • Page 51: Global And General Purpose Patches

    Creating Sounds and Effects There are two types of patches possible on the LXP-15 II: Global patches and Global and General General Purpose patches. Global patches, accessed by turning PAGE to Purpose Patches “Global,” are simple Source-to-Destination links that are active for all setups. As many as 28 global patches can be active at once.
  • Page 52: Setting Up Global Patches

    LXP-15 II Owner's Manual Lexicon Setting up Global NOTE: The Udpate function on the “Sys” page is an aid to creating patches. Patches When Update is set to “On,” the displayed Destination and Offset values will change as the Source controller is moved. This allows you to see the effect of a Source on its Destination.
  • Page 53 Creating Sounds and Effects The Global patching system is provided so you can customize the overall Tips for Using Global response of the LXP-15 II to your specific needs. Here are some general things Patches to keep in mind about Global patching: •...
  • Page 54: Setting Up General Purpose Patches

    LXP-15 II Owner's Manual Lexicon You can use a toggle footswitch (switch open = maximum value, switch closed Footswitch Control of = minimum value) or a momentary-contact switch to control either mute or Mute and Bypass bypass of LXP-15 II effects.
  • Page 55 Creating Sounds and Effects The patch is set up as follows (Patch 1 is used in this example. The same procedure is used for the other three patch pages.): • Press the button directly beneath “Dest 1” and use ADJUST to select the desired Destination parameter.
  • Page 56 LXP-15 II Owner's Manual Lexicon When using any of the Note Sources (LastNote, HiNote, LoNote), the threshold value is the Note Number that will correspond to the initial Destination parameter value. (On a standard 5-octave MIDI keyboard, 36 corresponds to the lowest C, 60 is middle C, and 96 is the highest key.) Threshold should be set to a value...
  • Page 57 Creating Sounds and Effects The scale value determines the effective range of the Source controller. For example, a scale value of 50% means that moving the controller through its full range of motion moves the Destination parameter through 50% of its total range. The upper and lower limits of the scale range are determined by the threshold and intial parameter values.
  • Page 58 LXP-15 II Owner's Manual Lexicon Tips for Using The General Purpose patching system allows you to customize the response of General Purpose Patches each LXP-15 II setup to your requirements. Here are some tips and techniques for getting the most from General Purpose patches.
  • Page 59: Patching Examples

    Creating Sounds and Effects Patching Examples Here are some patching examples to try out: • Use the Chorus Delay algorithm. LFO Controlled Chorus • LFO control of ChorRat controls the depth and rate of the chorus effect. • Threshold set to 64 “centers” the control range of the LFO. •...
  • Page 60 LXP-15 II Owner's Manual Lexicon • Use the Pitch/Delay algorithm MIDI Harmonizer • The MIDI keyboard should not be the audio source. In this example it would serve as a controller only. Audio from another source (microphone, tape track, etc.). Harmony is determined by playing the MIDI keyboard.
  • Page 61 Creating Sounds and Effects • Use the Gate algorithm Tempo Controlled Gate • Initial setting of Predely to 0 is necessary for proper use of tempo control. • Tempo control of Pdlyhi provides a slap/predelay rhythm that stays constant through a wide range of MIDI tempos. •...
  • Page 62: The Presets

    The Presets The Presets The LXP-15 II is factory-loaded with 128 preset effects. These can be used as About the presets is or modified to create new sounds. (128 User registers are provided for you to store your own sounds.) The presets themselves are permanently installed in your unit;...
  • Page 63: Studio Presets

    LXP-15 II Owner's Manual Lexicon Studio Presets Preset Name Patch Description Large Hall Dly/Rvb none Standard starting point for all great sounds. Use on voice or instruments. Room size controls density and sustain. Reverb time contours the release of the reverb.
  • Page 64 The Presets Preset Name Patch Description Stage Reflex Pch/Dly none This is a real punchy effect. Lots of delay relections and a bright 90 foot stage. Vary RvbMix for more less ambience on voices or punctuated percussion tracks. No Room Dly/Rvb none Simulates microphones in the upper corners of a small room.
  • Page 65 LXP-15 II Owner's Manual Lexicon Preset Name Patch Description Medium Gate Gate none A longer version of Small Gate. Large Gate Gate none Big open and shut effect. A bit extreme, very dance-worthy!! Bright Gate Gate none Brighter and less diffuse. Add to percussion tracks for more brilliance.
  • Page 66 The Presets Preset Name Patch Description 6VoiceChorus ChorDly none Bright medium rate chorus. Just enough diffusion to take the edge off a source. Baseline effect for any source. Vocal Chorus ChorDly none Longer, more diffuse reflections and a deeper chorus. Stack on “stacked”...
  • Page 67: Stage Presets

    LXP-15 II Owner's Manual Lexicon Stage Presets Preset Name Patch Description Guit:EKORoom Dly/Rvb Foot 1 Punctuated sound for short stacatto guitar sources, acoustic or electric. Solo Plate Plate Foot 1 Use controller to set the mix for your solo. Guitar Plate...
  • Page 68 The Presets Preset Name Patch Description Leni Chorus Pch/Dly LFO, Foot 1 Variable chorus effect tied to LFO rate. Controller varies the reverb mix with the chorus delay effect. WayOut There Pch/Dly InLevel Long recirculating effect great for vocals. Use sparingly. Increased input level lessens the reverb.
  • Page 69 LXP-15 II Owner's Manual Lexicon Preset Name Patch Description Dyna-Rev Pch/Dly InLevel Reverb decay time increases with input level. Useful for sharp transient sources and rhythm guitar. Metal Gate Gate none Tight inverted gate effect useful for many different stage sources.
  • Page 70 The Presets Preset Name Patch Description FadeInBox Gate InLevel A gated effect which increases with increased input level. For percussion or other stacatto sources. FadeInDetune Pch/Dly InLvl, Foot 1 Fades the input into the processor as a function of the input to the converter.
  • Page 71 LXP-15 II Owner's Manual Lexicon 5-10...
  • Page 72: Midi Operation

    MIDI Operation MIDI Operation All LXP-15 II parameters, presets and registers can be accessed by MIDI. All MIDI applications require the LXP-15 II to be connected with one or more MIDI devices with standard MIDI cables via the rear-panel MIDI jacks. We’ll describe several typical MIDI configurations below.
  • Page 73 LXP-15 II Owner's Manual Lexicon Some synthesizers and controllers cannot send the full range of MIDI program Controller quirks change messages (1-128). With them, you can't access all the registers in the LXP-15 II. 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.
  • Page 74 MIDI Operation Two LXP-15 IIs can be slaved together by connecting a cable from the MIDI OUT Slaving two or more LXP-15 IIs jack of the master to the MIDI IN jack of the slave. Additional LXP-15 IIs can be slaved to the master by connecting a cable from the MIDI THRU port of one slave unit to the MIDI IN port of the next unit.
  • Page 75: The Midi Page

    LXP-15 II Owner's Manual Lexicon The MIDI Page The LXP-15 II allows dumping of a single parameter, the contents of a single register, or all register contents from the front panel MIDI page. To access this page, simply turn the PAGE knob to "MIDI". The display will show:...
  • Page 76: Midi Implementation Data

    (register), or to retrieve stored data and place it in the edit buffer. Data Requests Byte Value Description (hex) System Exclusive Lexicon ID LXP-15/LXP-15 II ID 0011 nnnn(bin) n = MIDI Channel 0-15 0eee eeee e =event code: 60h = active setup data 61h = one register...
  • Page 77: Transmit/Receive Data

    All LXP-15 IIs must be set to the same MIDI Channel. Active Setup Data Byte Value Description (hex) System Exclusive Lexicon ID LXP-15/LXP-15 II ID 0000 nnnn(bin) n = MIDI Channel 0-15 (hex) data byte count (123) 0vvv vvvv(bin) 7-bit data...
  • Page 78 MIDI Implementation Data Small Parameter Adjust Byte Value Description (hex) System Exclusive Lexicon ID LXP-15/LXP-15 II ID 0010 nnnn(bin) n = MIDI Channel 0-15 0ppp pppp p = parameter number 0 - 127 0vvv vvvv 7-bit data (hex) End of SysEx message...
  • Page 79: Data Dump Contents

    LXP-15 II Owner's Manual Lexicon Data Dump Contents Single Program and The Single Program and All User Data dump share the same format. The Single All User Data Dump Program dump sends all of the stored parameters for the selected setup; the All User Data dump sends all 128 copies of the stored programs.
  • Page 80: Parameter Definitions

    MIDI Implementation Data Most LXP-15 II parameters fit into 7 data bits to make it easier to transfer data Parameter Definitions via MIDI. We've labeled these "Small Parameters". A few parameters, notably delays, require more than this range. These "Big Parameters" are constructed of two consecutively numbered small parameters.
  • Page 81 LXP-15 II Owner's Manual Lexicon Parameter Map Param # Data (Program parameters) 0 - 26 Microcode Parameters General Purpose Patch 1 Source General Purpose Patch 1 Threshold General Purpose Patch 1 Destination +30(31) General Purpose Patch 1 Scale +32(33) General Purpose Patch 1 Offset...
  • Page 82 MIDI Implementation Data Global patch parameter numbers 96-122 correspond to microcode parameter numbers 0-26. Global patch parameter numbers 123 and 124 correspond to parameter numbers 67 (Setup Increment) and 68 (Setup Decrement). If you want to globally patch Foot Controller 1 to Input level (microcode parameter number 24) you would use the global patch parameter number of 120 (96+24).
  • Page 83: Microcode Parameters

    LXP-15 II Owner's Manual Lexicon All microcode parameters in the LXP-15 II have a fixed MIDI control range. LXP-15 II Microcode Parameters MSB always equals zero. All microcode parameters are accessible via MIDI SysEx. These parameters can also be controlled through the front panel ADJUST knob and Dynamic ®...
  • Page 84 MIDI Implementation Data PITCH DELAY Param # Global Patch Parameter Name Max. Value 1(2) 97(98) Predelay (Pdlyhi) 16,383 Predelay Feedback 4(5) 100(101) Delay L (DlyLhi) 16,255 Feedback 7(8) 103(104) Delay R (DlyRhi) 16,255 Pitch On/Off Pitch Interval Pitch Fine Decay Time Treble Decay Bass Multiply Size...
  • Page 85 LXP-15 II Owner's Manual Lexicon PLATE Param # Global Patch Parameter Name Max. Value 1(2) 97(98) Predelay (Pdlyhi) 8191 Predelay Feedback Unused Unused Unused Unused Unused Unused Unused Unused Decay Time 0 - 15 Treble Decay 0 - 15 Bass Multiply...
  • Page 86 MIDI Implementation Data 1(2) Glide Delay (Gldlyhi) Provides (coarse) and fine adjustment of mono delay Notes on the Parameters time. This control is called Predelay (Pdlyhi) in the Pitch/Delay , Gate and Plate algorithms, and Delay 1 in Chorus Delay. Glide Feedback Adjusts positive feedback around the mono delay.
  • Page 87 LXP-15 II Owner's Manual Lexicon 21 Dry Pan Provides a pan control for the dry output. 22 MIX Adjusts the wet/dry mix. 23 Output Level Adjusts the output level of the signal processor. 24 Input Level Adjusts the input level to the signal processor.
  • Page 88: Implementation Chart

    MIDI Implementation Data MIDI Implementation Chart Lexicon LXP-15 II Multi-Effects Processor Function Transmitted Recognized Remarks Basic Default Channel Channel 1-16 1-16 Memorized Mode Defaullt Messages Mode 1, 3 Altered Note 0 - 127 Used as Number True Voice controller* Velocity...
  • Page 89 LXP-15 II Owner's Manual Lexicon 7-14...
  • Page 90: Troubleshooting

    LXP-15 II front panel controls, or by simple means such as cable replacement. Any error states which are not covered here should be referred to Lexicon Customer Service. In a low voltage, or "brown-out" condition, the LXP-15 II will freeze in its current Low Voltage state.
  • Page 91: Restoring Factory Presets And Registers

    About half-way through this list is a test called by Lexicon Customer Service Clear ALL RAM. Turn ADJUST to select this test. Do not run any other test unless instructed by Lexicon Customer Service. The display will show: Pre burn in Test Switch Test...
  • Page 92 Troubleshooting When the reinitialization procedure is successfully completed, the green LED at the bottom of the Headroom section on the LXP-15 II front panel will flash once, and the screen should show: Clear ALL RAM, (inits registers) passed Press VIEW to start. An error condition is signaled by the illumination of the red overload LED for approximately half a second, and the message "Failed"...
  • Page 93 LXP-15 II Owner's Manual Lexicon...
  • Page 94: Specifications

    Specifications RFI Shielding Audio Inputs (2) Sampling Frequency Complies with FCC Class A require- Level: -26 dBu minimum 31.25 kHz ments for computer equipment (0 dBu = 0.775 Vrms) Impedance: Stereo: 50 k , Memory Power Requirements unbalanced 128 presets with 128 user registers 100/120/220/240 VAC Mono: 25 k available...
  • Page 95: Tempo To Delay Time Conversion

    Tempo to Delay Time Conversion (Tempo in beats per minute; Delay values to the nearest millisecond) Tempo 1/8T 1/16 Tempo 1/8T 1/16 1000 60,000 ms (1 minute) Tempo (bpm) = Delay Time in ms for quarter-note beats 1/4 = quarter-note echo 1/8 = eighth-note echo 1/8T = eighth-note triplet echo 1/16 = sixteenth-note echo...
  • Page 96 LXP-15 II User Log Setup Name Setup Name Setup Name Setup Name This page may be copied as needed for documenting the sounds stored in LXP-15 II User memory.
  • Page 97 LXP-15 II Owner's Manual Lexicon 4-24...
  • Page 98 Lexicon Inc. 3 Oak Park Bedford, MA 01730 USA Telephone 781-290-0300 Fax 781-290-0490 Lexicon Part #070-10273...

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