Lexicon MPX 100 Manuale di riferimento
Lexicon Inc. • 3 Oak Park • Bedford MA 01730 USA • Telephone 781-280-0300 • Fax 781-280-0490
PRODUCT INTRODUCTION
MPX 100 Dual Channel Processor
Stereo 44.1kHz S/PDIF Digital Output
Lexicon Inc. • 3 Oak Park • Bedford MA 01730 USA • Telephone 781-280-0300 • Fax 781-280-0490
MPX 100 Dual Channel Processor
Stereo 44.1kHz S/PDIF Digital Output
Specifications subject to change
without notice.
Specifications
Audio Inputs (2)
Level -20dBu
Impedance 500K unbalanced for
Direct Instrument input
(Unit detects mono input
on the right input)
1/4" connectors
Analog Audio Outputs (2)
Level +8dBu typical
Impedance 75Ω: headphone output
(Left only used for mono
output; Right only used
for stereo headphones)
1/4" connectors
Digital Audio Output
Digital S/PDIF output (always active)
Sample Rate 44.1kHz
ConnectorCoaxial, RCA type
Footswitch
Tip/Ring/Sleeve phone jack for
Bypass and Tap (optional)
Frequency Response
Wet/Dry 20Hz-20kHz, ±1dB
THD+N
<0.05%, 20Hz-20kHz
Dynamic Range
A-A >95dB typical, 20Hz-20kHz,
unweighted
A-D >100dB typical, 20Hz-20kHz,
unweighted
Conversion
20 bits A/D, 20 bits D/A
44.1kHz sample rate
Crosstalk
>45dB
The MPX 100 is a true stereo dual-channel procesor with 24-bit internal processing, 20-bit A/D-
D/AandS/PDIFdigitaloutput.PoweredbyanewversionofLexicon’sproprietaryLexichip,™theMPX
100 has 240 presets withclassic, true stereo reverb programs such asAmbience,Plate, Chamberand
Inverse,as well as Tremolo, Rotary,Chorus,Flange,Pitch,Detune, 5.7second Delay and Echo. Dual-
channel processing gives you completely independent effects on the left and right channels.
AfrontpanelAdjustknoballowsinstantmanipulationofeacheffect’scriticalparametersandanEffects/
Balance knob lets you control effect level or the balance of dual effect combinations. An easy Learn
mode allows MIDI patching of front panel controls. In addition, tempo-controlled delays lock to Tap or
MIDIclock,andTaptemposcanbecontrolledbyaudioinput,thefrontpanelTapbutton,dualfootswitch,
external MIDI controller or MIDI Program Change. Other features include dual 2-stage headroom
indicators, a headphone output, a software-selectable MIDI OUT/THRU port,pushbutton or footswitch
selection of dry or muted audio output and a 20Hz-20kHz ±1dB Frequency Response.
Power Requirements
9VAC, 1A wall transformer provided
Dimensions
19"Wx 1.75"H x 4"D
(483x45x102mm)
Weight
Unit: 2 lbs, 2 oz (0.959 kg)
Environment
Operating
Temperature 32° to 104°F (0° to 40°C)
Storage -30° to 75°C
Relative
Humidity 95% non-condensing
PRELIMINARY DATA
Lexicon Inc. • 3 Oak Park • Bedford MA 01730 USA • Telephone 781-280-0300 • Fax 781-280-0490
PRODUCT HIGHLIGHTS
• 240 Factory Programs; 16 User programs
• Classic true stereo reverb programs: Ambience, Plate, Chamber, Gate, Hall and Room as well as
Tremolo, Rotary, Chorus, Flange, Pitch, Detune, 5.7 second Delay and Echo
• DualEffectconfigurationsincludeDualMono,DualStereo,CascadeandParallelwithcombinations
of Flange, Pitch, Chorus, Delay and Reverb
• Front panel Adjust knob allows instant control over the current program
• Easy-to-use Learn mode patches a MIDI Controller or Program Change to as many as5 front panel
controls (Mix, Effects Level/Balance, Adjust, Bypass and Tap)
• Tempo-controlled rates and delay times lock to Tap tempo or MIDI Clock
• Taptempo can be set by audio Input, the front panel Tap button,optional footswitch, MIDIcontroller
or Program Change
• Dry or Muted audio output can be controlledfrom thefrontpanel Bypass button, optional footswitch,
MIDI Controller or Program Change
• 24-bit Digital Signal Processing
• 20-bit A/D, D/A with a frequency response of 20Hz to 20kHz ±1dB
• Analog outputs provide >95dB Dynamic Range
• S/PDIF digital output provides simultaneous wet or dry 20-bit digital output with >100dB Dynamic
Range
• High impedance input allows you to use a variety of instruments from guitars to keyboards
• Left output doubles as a headphone output
• Software-selectable MIDI OUT/THRU port
• System mode provides access to system-wide settings and MIDI features:
Assign front panel Bypass button as Input Mute or Bypass
Enable or Disable Learned Patches
Mute or Bypass during Program loads
Wet or Dry Digital Output
MIDI OUT or THRU
Enable or Disable MIDI Program change
Enable or Disable incoming MIDI Clock
Global or Program Specific Tempo
MIDI Dumps for the current program, all 16 User Programs, or System mode settings
MPX 100 Dual Channel Processor
Stereo 44.1kHz S/PDIF Digital Output
Lexicon Inc. • 3 Oak Park • Bedford MA 01730 USA • Telephone 781-280-0300 • Fax 781-280-0490
APPLICATION NOTE
MPX 100 Dual Channel Processor
Stereo 44.1kHz S/PDIF Digital Output
TheMPX100TapTempofeature allowsyoutosetdelaytimestothebeatofthemusic. Tosetthetempo
from the front panel, simply press the Tap button twice in time with the music. That’s your tempo. No
moredialingupwhat“couldbe”thedelaytimeinmilliseconds—justtaptwice—theMPX100willfigure
out the time for you. When you want to change tempo, just tap twice again in the new rhythm.
You can also use audio input to set the tempo of the MPX 100 delay rate.
1. Press and hold the Tap button. (The optional dual footswitch lets you press and hold Tap without
taking your hands off your instrument. )
2. While holding down Tap, play 2 short notes in rhythm, then release the Tap button.
3. Rhe MPX 100 automatically calculates the tempo from the space between your two notes.
For live performances this is a must — an easy way to set delay rates to follow your rhythm.
Eachfactorypresetisstoredwithitsowntemporate.Youcantapinanewtempo(andstoreyourversion
with the preset in a User location) or set the MPX 100 to always recall the last tempo used and apply
it to every preset. To do this, set the Tempo parameter to Global in the MPX 100 System mode*.
1. Enter System mode by pressing and holding the Bypass button for 2 seconds.
2. Turn VARIATION to 8. (This selects the Tempo parameter.)
3. Press Store to toggle the Edit LED On (Program specific tempo) or Off (Global tempo).
WhenyouselectGlobalTempofromtheMPX100Systemmode,thelasttempotappedinwillbeapplied
to all programs. You can freely load presets and, if they have tempo-controlled parameters, they willl
loadwiththecurrenttempo.(Youwillknowifapresetistempo-controllablebecausetheTapbuttonLED
will flash when the program is loaded.)
When used in conjunction with the MPX 100 Learn feature, Tap can be set remotely from any MIDI
device. MIDI controllers, such as Lexicon's MPX R1 Foot Controller, can be used tosend Continuous
Controller messages or Program Changes to the MPX 100 or you can send Continuous Controller or
Program Change messages from the button and fader modes of many mixing consoles. The MPX 100
will Learn these messages and allow you to set tempo via MIDI.
The MPX 100 can also receive and utilize MIDI Clock. So, when used with a MIDI sequencer or drum
machine, the MPX 100 automatically adjusts its internal tempo to match.
*All System mode parameters are shown on a Quick Reference Card shipped with the MPX 100 and designed
to fit on top of the unit.
Tap Tempo
Lexicon Inc. • 3 Oak Park • Bedford MA 01730 USA • Telephone 781-280-0300 • Fax 781-280-0490
APPLICATION NOTE
MPX 100 Dual Channel Processor
Stereo 44.1kHz S/PDIF Digital Output
MIDI Learn
The MPX 100 offers a powerful, easy to use, remote editing feature called Learn which allows you to
remotely control as many as 5 of the front panel controls. By sending standard MIDI Continuous
Controller or Program Change messages to the MPX 100, you have completecontrol over the wet-to-
dry Mix ratio, Effects Level or Balance, Bypass, Tap, or the primary aspect of the preset — the Adjust
knob.
To use Learn:
1. Simultaneously press Tap and Store.
2. MoveMix,EffectsLvl/Bal,Adjust,BypassorTaptoassignittoaMIDIcontroller.Forthisexample,
we'll move Mix.
3. Now, send a controller message to the MPX 100. For this example, we'll move the Mod Wheel on
a connected MIDI keyboard. The Edit LED will flash to show MIDI activity.
4. Press Store. The embedded Store light will flash rapidly.
5. Press Tap and Store simultaneously to exit. (To clear, repeat without sending a MIDI message.)
In our example, we now have Mod Wheel control over the MPX 100 wet/dry Mix. As the effect of Learn
is global, the Mix ratio of every MPX 100 program can now be controlled by the Mod Wheel.
When used with a MIDI device, such as the Lexicon MPX R1 MIDI Remote Controller, all 5 front panel
controls can be adjusted and every preset can be loaded remotely. The MPX 100 will also Learn the
individual MIDI Channels associated with each controller. This means that it can operate on up to 6
different MIDI channels (one for loading presets and 5 for the front panel controls), allowing you to use
it with multiple MIDI devices.
As a gigging musician, you never have to touch the front panel during a live performance. In a MIDI
studio,thecontrolscanbeautomatedandrecordedintoanysequencingsoftwareallowingforcomplete
automation of MPX 100 presets.
A System mode parameter allows you to disable and enable Learn. This lets you temporarily turn off
Learned controllers without having to clear them.
Front panel controls and the control sources which can be Learned:
Control sources
MIDI
Front Panel control MIDI Controller Program Change Footswitch
Mix X
Effects Lvl/Bal X
Adjust X
Bypass X X X
Tap X X X
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