Lexicon MPX 100 Manuel de référence

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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