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MPX 500 User Guide

Getting Started

1

Getting Started

Introduction

Thank you for your purchase of the MPX 500 24-Bit Dual Channel Processor.

Powered by Lexicon’s proprietary Lexichip™, the MPX 500 has 240 presets with classic reverb
programs such as Ambience, Plate, Chamber and Inverse, as well as Tremolo, Rotary, Chorus,
Flange, Pitch, Detune, 5.5 second Delay and Echo. Dual-channel processing gives you two
independent effects in a variety of configurations: Dual Stereo (Parallel), Cascade, Mono Split and
Dual Mono.

A large graphics display and dedicated Edit knobs give you instant access to each preset’s
parameters and an easy Learn mode allows MIDI patching of front panel controls. In addition, tempo-
controlled delays and modulation rates lock to Tap or MIDI clock, and Tap tempos can be controlled
by audio input, the front panel Tap button, dual footswitch, external MIDI controller or MIDI Program
Change.

Other features include a software-selectable MIDI OUT/THRU port, pushbutton or footswitch
selection of dry or muted audio output and a built-in power supply.

To make sure you get the most out of the MPX 500, be sure to read the manual.

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Summary of Contents for MPX 500

Page 1: ...User Guide MPX 500 24 Bit Dual Channel Processor ...

Page 2: ... Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular instal...

Page 3: ...ate 22 2 Gate 23 3 Hall 24 4 Chamber 25 5 Ambience 26 6 Rooms 27 7 Tremolo 28 8 Rotary 29 9 Chorus 30 10 Flange 31 11 Detune 32 12 Pitch 33 Table of Contents 13 Delay Echo 34 About the Dual Programs 36 14 Special FX 38 15 Flange Delay 39 16 Pitch Delay 39 17 Chorus Delay 40 18 Delay Reverb 40 19 Flange Reverb 41 20 Pitch Reverb 41 21 Chorus Reverb 42 22 MonoSplitDly 43 23 MonoSplitRvb 44 24 Dual M...

Page 4: ...arallel Cascade Mono Split and Dual Mono A large graphics display and dedicated Edit knobs give you instant access to each preset s parameters and an easy Learn mode allows MIDI patching of front panel controls In addition tempo controlled delays and modulation rates lock to Tap or MIDI clock and Tap tempos can be controlled by audio input the front panel Tap button dual footswitch external MIDI c...

Page 5: ...aches full scale Load Loads the selected program LED lights to indicate another program is cued Store Initiates store procedure When pressed with Tap ac tivates MIDI Learn Edit Pages Accesses additional edit pages EmbeddedLEDlights to indicate program is altered but not stored Input Trim Power Push for Bank Learn Edit Pages 1 2 3 4 1 2 3 4 Edited System Load Bypass Store Tap Cancel Select Change 2...

Page 6: ...vel until the clip meters come on only on the highest peaks The Input Trim control allows the MPX 500 to be driven by an input level in the range of 20dBu to 8dBu The minimum setting fully counterclockwise should be optimal for 4dBu balanced inputs The maximum setting fully clockwise should be optimal for 10dBV unbalanced inputs Output 1 Press System to enter System mode Output Level the first Sys...

Page 7: ...ch can be wired to a tip ring sleeve connector A stereo Y connector allows two identical single switches to be used Power off the MPX 500 before plugging in the footswitch Otherwise Bypass will be enabled MIDI Two 5 pin DIN MIDI connectors are provided for MIDI IN and soft ware selectable MIDI OUT THRU POWER Standard 3 pin IEC power connector 100 240V 50 60Hz automatic switching to correct voltage...

Page 8: ...t input Refer to the Program Descriptions to take advantage of this configuration MPX 500 Output Mixer Send Mixer Input MPX 500 Input Tip Tip 1 2 3 1 2 3 Sleeve Ring Tip Ring Sleeve Ring Sleeve TRS to XLR Dual Processor Setup with a Console Ch7 Ch8 Aux Send 1 Aux Send 2 R Out L Out R In L In OUT THRU MIDI IN FOOTSWITCH LCD CONTRAST 100 240V 50 60 Hz 12W SERIAL MPX 500 Dual Channel Processor LEXICO...

Page 9: ...Lexicon Getting Started 6 ...

Page 10: ...L Mix 0 g S44 172 Input Level meters As many as four editable parameters are shown on a page Pressing the Edit Pages button repeatedly cycles through all of the available pages Number of currently loaded program Name of currently loaded program Bank containing currently loaded program Current tempo setting for delays and status of tempo selection p program specific g global Routing configuration o...

Page 11: ... to showing the current program but the Load LED will remain lit to indicate that the last selected program is cued for loading The number of the cued program will appear highlighted to the left of the name of the current Bank on the display To load the cued program press Load An AutoLoad feature is available which will cause selected programs to load automatically 3 4 second after the knob stops ...

Page 12: ...m orifyouloadanotherprogram IfyoureturntoProgramSelectmodewithoutstoring your changes your edited version will still appear as the currently running program but the Load LED will light and the original version of the program will be cued The 4 front panel edit knobs correspond to the displayed parameters Position 1 on Page 1 always contains a special custom control for easy editing Edit Pages 1 2 ...

Page 13: ...itical parameters of the sound We have positioned this custom control under Edit knob 1 on Page 1 of each program and refer to it as the Adjust knob in this manual In many cases this parameter controls several effect parameters simultaneously to provide simple control of a complex editing process In many Chamber and Room programs for example this parameters controls the liveness of the space by ch...

Page 14: ... can also use audio input to set the tempo of the MPX 500 delay times 1 Press and hold theTap button until the Tempo display appears Using a footswitch lets you press and hold Tap without taking your hands off your instrument 2 The message Detecting Audio will be shown along with a list of parameters in the current program which can be controlled by tempo Play 2 short notes in rhythm to set the te...

Page 15: ...ges or Program Changes to the MPX 500 or you can send Continuous Controller or Program Change messages from the button and fader moves of many mixing consoles The MPX 500 will Learn these messages and allow you to set tempo via MIDI The MPX 500 can also receive and utilize MIDI Clock So when used with a MIDI sequencer or drum machine the MPX 500 automatically adjusts its internal tempo to match Se...

Page 16: ...cted by default when Store is pressed To select a different location including the location of a User program you want to overwrite press and turn PROGRAM to select another location in the User Bank The program will be displayed with its original name and a numeric suffix 1 9 You can keep this default name or use Edit knobs 1 and 3 to select character positions and assign characters to create a di...

Page 17: ...Lexicon Basic Operation 14 ...

Page 18: ...knob 1 will select parameters edit knob 3 will change the selected parameter s setting Except for MIDI dumps and reinitialization commands which require confirmation to execute system parameter changes are effected immediately Pressing System again will return the unit to its previous running mode Edit Pages 1 2 3 4 System Select Change EDIT TheSystem LED will light when System mode is active Use ...

Page 19: ...Program Global Global Bypass Mode Dry Full Mute Input Mute Dry Program Load Mode Bypass Dry Full Mute Bypass Dry Tempo Mode Program Global Global MIDI Patches Enabled Disabled Enabled MIDI Channel Off 1 16 Omni 1 MIDI Program Change Enabled Disabled Enabled MIDI Clock Enabled Disabled Enabled MIDI Out Thru Out Thru Out Operating Mode Normal Locked Demo Normal Memory Protect Enabled Disabled Disabl...

Page 20: ...ent Mix setting of the MPX 500 will be applied to all programs Global or whether program specific Mix levels are restored on each program load NOTE A default Mix value is stored with each program These individual stored values will take effect when a program is loaded if Mix Mode is set to Program the Global mix setting will override the individual stored settings if Mix mode is set to Global Bypa...

Page 21: ...s parameter allows you to temporarily suspend Disable and restore Enable any Learned patches MIDI Channel Allows selection of a MIDI Channel for all MPX 500 messages Learned SysEx and Program Change MIDI Program Change The setting of this parameter determines whether or not the MPX 500 will recognize MIDI Program Change messages for loading programs MIDI Clock The setting of this parameter determi...

Page 22: ...User programs Auto Load When enabled programs will load approximately 3 4 second after selection When disabled Load must be pressed to load selected programs MIDI Dumps Dump User Bank Dump Current Program Dump System Data These selections allow you to execute MIDI Dumps See MIDI Operation Clear User Bank Selecting this parameter will arm a reinitialization procedure that will erase the contents of...

Page 23: ...Lexicon System Mode 20 ...

Page 24: ...y Chamber and Room programs for example Adjustcontrolsthe liveness ofthespacebychangingdecay EQandearlyreflectionsallatthesame time This parameter has a range of 0 127 to make it compatible with MIDI control For easy identification this parameter name will always appear in parentheses as Livenes When you turn the knob the bottom display line will temporarily show a more complete description of its...

Page 25: ...iginally generated by a large thin sheet of metal suspended upright under tension on springs Transducers attached to the plate transmitted a signal that made the plate vibrate making sounds broadcast through the plate seem to be occurring in a large open space Plate PROGRAMs Adjust Tap 1 Small Plate Livenes 2 Medium Plate Livenes 3 Large Plate Livenes Predelay 1 32 Note 4 Tap PreDelay MidRT Predel...

Page 26: ... Adjust Gated reverbs were originally created by feeding a reverb such as a metal plate through an analog gate device The decay time was set to instant and the hold time varied the duration of the sound Gate PROGRAMs Adjust Tap 10 StraightGate Time 11 Slope Down Time 12 Drum Gate HighCut 13 140ms TapPre HighCut Predelay 1 32 Note 14 240ms TapPre HighCut Predelay 1 32 Note 15 340ms TapPre HighCut P...

Page 27: ... a good choice for giving separately recorded tracks the sense of belonging to the same performance Lexicon sHallprogramsrecreatetheacousticsofactualplaces fromgrandreverberantenclosures to small concert halls Hall PROGRAMs Adjust Tap 20 Small Hall MidRT 21 Medium Hall MidRT 22 Large Hall MidRT 23 Small Church MidRT 24 Large Church MidRT 25 Jazz Hall MidRT 26 Dance Hall MidRT 27 Synth Hall MidRT 2...

Page 28: ... on a wide range of material They are especially useful on spoken voice giving a noticeable increase in loudness with very low color Historically recording studio chambers were often oddly shaped rooms with a loudspeaker and set of microphones to pick up the ambience in various parts of the room Chamber PROGRAMs Adjust Tap 30 Brick Wall HighCut 31 Basement HighCut 32 Live Concert Livenes Eko Delay...

Page 29: ...es from the sound source into the room Ambience gives warmth spaciousness and depth to a performance without coloring the direct sound andiscommonlyusedtoaddaroomsoundtorecordedmusicorspeech Inmusicrecording Ambience can realistically add distance to close miked signal Ambience PROGRAMs Adjust Tap 40 Announcer HighCut 41 VerySmallAmb HighCut 42 SmallAmb HighCut 43 MidSizeAmb HighCut 44 Studio D Hi...

Page 30: ...tric guitar tracks Room PROGRAMs Adjust Tap 50 Bedroom Walls 51 Tiled Room LF Boost 52 Studio C MidRT 53 Small Room Livenes 54 Studio B MidRT 55 Rehursal Room EQ 56 Studio A MidRT 57 Large Room EQ 58 Fat Space MidRT 59 Chunky Space EQ The Room programs emulate actual rooms where there is a more apparent sense of being in a small live place ...

Page 31: ...ase resulting in a panning motion All of these programs should be used with Mix set to fully Wet By adding more dry to the wet dry mix Mix effectively sets the depth of the Tremolo As Tremolo is essentially a rhythmic effect care should also be taken to make the rate work with the tempo of the music Tremolo is a rhythmic change in loudness commonly employed as an expressive technique by vocalists ...

Page 32: ...o sound great with guitar and electric piano rhythm parts In fact they re great alternatives to chorus and tremolo effects for any sound source All of these programs should be used with Mix set to fully Wet for the full effect Rotary PROGRAMs Adjust Tap 65 Rot SlowFast Switch 66 Rot Slow Resnce 67 Rot SpeedAdj Speed 68 Rot TapRate1 Balance Rate 69 Rot TapRate2 Resnce Rate Rotary speaker cabinets w...

Page 33: ... airy effect that can simulate the sound of multiple sound sources from a single source These programs are stunning on acoustic or clean electric guitar All of these programs should be used with Mix set to fully Wet to achieve the full richness of the 6 voice chorus Chorus effects multiply the original audio source to create a lush full sound Traditionally used to fatten up tracks and to add body ...

Page 34: ...full flange effect Flange PROGRAMs Adjust Tap 75 Flng Lite Speed 76 Flng Lite180 Resnce 77 Flng Med180 Speed 78 Flng Deep Resnce 79 Flng Deep180 Resnce Flangingeffectswereoriginallycreatedbysimultaneouslyrecordingandplayingbacktwoidentical programs on two tape recorders then using hand pressure against the flange of the tape reels to slow down first one machine then the other The result was a seri...

Page 35: ...h Mix set to fully Wet to achieve the full effect Detune PROGRAMs Adjust Tap 80 Detune Mild Dtuning 81 Detune Med Warm Dtuning 82 Detune Heavy Dtuning 83 Det Xtreme Dtuning 84 Pitch Detune Dtuning Detune effects add a delayed pitch shifted version of the original source thickening up the sound They can be particularly effective when used to simulate double tracking They are also great alternatives...

Page 36: ...one octave up For pitch correction use these programs withMix set to fully Wet For harmonization use the desired amount of wet dry Mix Altering the pitch of a sound allows a variety of effects from subtle detuning to the creation of harmonies and chords Pitch PROGRAMs Adjust Tap 85 Pch Chrmatic Pitch 86 Pitch Fine Pitch 87 Pch 4th 5ths Pitch 88 Pch PowerInV Pitch 89 Vocal Chorus HighCut ...

Page 37: ...04 the amount of feedback is preset and Adjust determines Delay time NOTE In all of the Delay programs including the Dual combinations Delay times e g L Dly 1 R Dly 1 etc not controlled by Tempo are scaled by the Master Delay parameter MstrDly In some programs Adjust controls MstrDly MstrDlyvaluesrangefrom0 100 andaresetto100 inmostpresetprograms Ifthiscontrolisreset manually or by Adjust to less ...

Page 38: ...epeat has the same exact timbre and the only difference from repeat to repeat is in loudness Digital delay and tape echo are both useful but they are different Tape echo is warmer and allows the original sound to stand out more while digital delay can present a perfect copy of the orignal sound Delay Echo PROGRAMs Adjust Tap 90 Dly Mono Tap Feedbk Delay Time 91 DlyStereo Tap Feedbk Delay Time 92 D...

Page 39: ... so that they receive and output stereo audio from both left and right channels The last four programs in each Bank are set up in the Cascade configuration two stereo programs one placed after the other for example Flange Delay Flange passes its stereo signal to the Delay Banks 22 and 23 are set up in the Mono Split configuration which is similar to Parallel but here one program Flange receives au...

Page 40: ... of Effects Lvl Bal in the cascade programs Several points from the knob s continuous range are illustrated here using Pitch Delay as an example At the leftmost setting you get only pitch shift At the rightmost setting you get only delayed dry signal This setting provides pitch shift plus delayed pitch shift At center you get delayed pitch shift This setting provides delayed pitch plus delayed dry...

Page 41: ...Ms Adjust Tap 105 Infinite HighCut Eko 106 The Abyss Dtuning 107 Jet Flange Resnce Speed Whole Note 108 Chorus Verb HighCut 109 TapRot Dly Time 0 150ms Fbk Rate Drum Horn 110 Fader Verb Level Echo 111 LowRumble Decay 112 Ducker Verb Decay 113 DuckerChorus Resnce 114 Ducker Xfeed Feedbk 115 Echoes Beats Delay Delay Time 116 Panning Dlys Feedbk Dly Time Pan Rate 117 DreamSequence Pitch 118 Infinite ...

Page 42: ...Feedbk Delay Time 1 4 Note 127 Fngl Fbk Time 0 150ms Feedbk 128 Flng Pong Feedbk Delay Time 1 4 Note 129 Flng Bnce Time 0 200ms Feedbk 15 Flange Delay 16 Pitch Delay Pitch Delay PROGRAMs Adjust Tap Routing 130 5th Tap Pitch Delay Time 131 8ve 3pTap Pitch Delay Time 132 8ve 8 3plTap Pitch Delay Time 133 3rd4thPong Pitch Delay Time 134 4th5th Xfeed Pitch Delay Time 135 5th6th Xfeed Pitch Delay Time ...

Page 43: ...e 157 8 3pl Large MidRT Delay Time 158 Xfeed Room Livenes Delay Time 159 Xfeed Large MidRT Delay Time L R L R Delay Reverb L R L R Delay Reverb 17 Chorus Delay L R L R Chorus Delay L R L R Chorus Delay Chorus Delay PROGRAMs Adjust Tap Routing 140 Chor Tap Feedbk Delay Time 141 Chor 8Tap Feedbk Delay Time 142 Chor 8 3pl Feedbk Delay Time 143 Chor Pong Feedbk Delay Time 144 Chor Repeat Time 145 Chor...

Page 44: ...venes Speed Whole Note 168 DeepFl Large MidRT 169 DeepFl Room Livenes 20 Pitch Reverb Pitch Reverb PROGRAMs Adjust Tap Routing 170 3rd4th Room Pitch PreDelay 1 32 Note 171 4th5th Room Pitch PreDelay 1 32 Note 172 5th6th Room Pitch PreDelay 1 32 Note 173 8ve MidSiz Pitch PreDelay 1 32 Note 174 Power MidSiz Pitch PreDelay 1 32 Note 175 Detune Room Dtuning PreDelay 1 32 Note 176 Fine Small Pitch PreD...

Page 45: ...Tap Routing 180 Chor1 Small MidRT 181 Chor1 MidSiz MidRT 182 Chor1 Large MidRT 183 Chor2 Small MidRT 184 Chor2 MidSiz MidRT 185 Chor2 Large MidRT 186 Chor1 Room Livenes 187 Chor2 Room Livenes 188 Chor3 Room Livenes 189 Chor1 Small MidRT L R L R Chorus Reverb L R L R Chorus Reverb ...

Page 46: ... Flng Bnce Time 194 DeepFl Dly Time 195 5th Tap Pitch Delay Time 196 8ve 3plTap Pitch Delay Time 197 4th5th Xfeed Pitch Delay Time 198 5th6th Xfeed Pitch Delay Time 199 PchFine Tap Pitch Delay Time 200 Chor Tap Feedbk Delay Time 201 Chor Pong Feedbk Delay Time 202 Chor Xfeed Time 203 Chor Bnce Time 204 Chor Inverse Time L R L R Flange Delay L R L R Chorus Delay L R L R Pitch Delay ...

Page 47: ...10 LiteFL MidSz MidRT Speed 211 LiteFl Large MidRT 212 DeepFl Small MidRT 213 DeepFl MidSz MidRT 214 DeepFl Room Livenes 215 4th5th Room Pitch PreDelay 1 32 216 5th6th Room Pitch PreDelay 1 32 217 4ths Large MidRT 218 8ve MidSz MidRT 219 PchFin MidSz Pitch 220 Chor1 Small MidRT 221 Chor1 Large MidRT 222 Chor2 MidSiz MidRT 223 Chor2 Large MidRT 224 Chor3 MidSiz MidRT L R L R Chorus Reverb L R L R P...

Page 48: ...enes Delay Time 229 DeepFl Tap Feedbk Speed 1 4 Note 230 DeepFl Dot8 Feedbk Speed dotted 1 4 Note 231 8ves Tap Pitch Delay Time 232 8ves 3pl Pitch Delay Time 233 Chor2 Tap Feedbk Delay Time 234 Chor2 Dot8 Feedbk Delay Time 235 LiteFl Large MidRT Speed 236 DeepFl Large MidRT Speed 237 8ves MidSz MidRT PreDelay 1 32 238 4ths Large MidRT PreDelay 1 32 239 Chor1 Room Livenes 240 Chor2 Room Livenes ...

Page 49: ...Lexicon Program Descriptions 46 ...

Page 50: ...tem Mode and select the MIDI Channel you want to use See System Parameters Any of the 16 parameters controlled by the Edit knobs can be patched to Continuous Controllers Program Change messages can also be used to load programs Edit Page 4 Input Trim Power Push for Bank Learn Edit Pages 1 2 3 4 1 2 3 4 Edited System Load Bypass Store Tap Cancel Select Change 24 Bit Dual Channel Processor MPX 500 E...

Page 51: ...higher followedbyProgramChange1 loads the first program of the User Bank Sending controller 32 with a value of 1 then Program Change 2 loads the second program Slope Down in the Gate Bank Sending controller 32 with a value of 8 then program change 4 will load the last program Slap Chorus2 in the Chorus Bank Once a bank is selected all subsequent Program Change messages will select programs within ...

Page 52: ...lected knob s name will appear highlighted and its current controller number and range will be displayed 3 Move the MIDI controller through its full range To use only a fraction of the controller s range limit your movement to the desired range An indicator will appear on the display to indicate incoming MIDI activity You can also dial up the controller you want with the Edit knob In this case the...

Page 53: ...and Tap Cancel to enter Learn Mode Both LEDs will light to indicate Learn Mode is active Learn Store Tap Cancel 2 Press the front panel button you want to control Bypass or Tap Push for Bank Learn Load Bypass Store Tap Cancel PROGRAM 3 Send a MIDI Program Change to the MPX 500 The display MIDI indicator will come on to indicate incoming MIDI activity 4 Press Store to commit to the assignment 5 Sim...

Page 54: ...n Program Change 20 for Bypass remember that 21 will also be learned so you will have to jump to Program Change 22 and 23 for Tap Clearing a Learned Assignment 1 Simultaneously press Store and Tap Cancel to enter Learn Mode 2 Turn the front panel control that you want to clear Edit Knob 1 4 with the assigned parameter displayed Bypass or Tap counterclockwise until None is displayed 3 Press Store t...

Page 55: ...he MIDI Clock parameter in System Mode MIDI Dumps MIDIDumpsallowyoutobackupUserprograms thecurrentlyrunningprogram oryourSystemMode settings and Learned patch assignments to a storage device typically a sequencer MIDI Dumps are performed in System Mode To perform a dump of the User programs the current program or all of the System Mode parameter settings 1 Press System The LED will light to indica...

Page 56: ...2 used as Bank Select Change Learned Program X 0 15 1 16 100 127 ignored Program message Change True 0 99 Program Change 1 100 for current Program Group as applicable Bank Select X O System Lexicon O O Product ID 20 decimal Exclusive Real Time X X Device ID MIDI Channel non Real Time X X 0 15 1 16 System Song Pos X X Song Sel X X Common Tune X X System Clock X O Real Time Commands X X Aux Local ON...

Page 57: ...Lexicon MIDI Operation 54 ...

Page 58: ...lta Sigma 20Hz 20kHz 1dB Crosstalk 96dB 1kHz D A Dynamic Range 101dB typical Digital Audio I O Connectors Coaxial RCA S PDIF IEC 958 CP 340 System Sample Rates Internal Clock and S PDIF Input 44 1 48kHz Display 150 x 32 LCD Backlit Footswitch Tip Ring Sleeve phone jack for Bypass and Tap optional MIDI Interface Connectors IN OUT THRU Power Requirements 90 250V 50 60Hz 12 5W 3 pin IEC Connector Dim...

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