Lexicon MPX 100 Manual de usuario

User Guide

MPX 100 Dual Channel Processor

Stereo 44.1kHz S/PDIF Digital Output

Lexicon Part #070-11935

Unpacking and Inspection

After unpacking the unit, save all packing materials in case youever need to re-ship. 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.

Notice

This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer's instructions, may cause

interference to radio and television reception. It has been type tested and found to comply with the limits for a Class B computing device in accordance with the specifications in

Subpart J of Part 15 of FCC Rules, which are designated to provide reasonable protection against such interference in a residential installation. However, there is no guarantee

thatinterferencewillnotoccurinaparticularinstallation.Ifthisequipmentdoescauseinterferencetoradioortelevisionreception,whichcanbedeterminedbyturningtheequipment

OFF and ON, the user isencouraged to try tocorrect the interference by one or more of the following measures: reorient the receiving antenna; relocate the computerwith respect

to the receiver; move the computer away from the receiver; plug the computerinto a different outlet sothat the computer and receiver are on different branch circuits. If necessary,

the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user may find the following booklet prepared by the Federal

Communications Commission helpful: "How to identify and Resolve Radio/TV Interference Problems." This booklet is available from the U.S. Government Printing Office,

Washington, DC 20402, Stock No. 004-000-00345-4.

Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la class B prescrites dans le Règlement sur

le brouillage radioélectrique édicté par le ministère des Communications du Canada.

Acknowledgement

All product names indicated by a Trade Mark are registered by their respective manufacturers.

Lexicon Inc.

3 Oak Park

Bedford MA 01730 USA

Telephone 781-280-0300

Fax 781-280-0490

Program Descriptions............................................................17

Single Programs ..................................................................18

Dual Programs.....................................................................32

Special FX ...........................................................................41

User Programs ....................................................................42

Restoring Factory Defaults

MIDI Operation........................................................................43

MPX 100 MIDI Behavior...........................................................43

Assigning a MIDI Channel for Program Load...........................44

Using Program Change Messages for Program Load

Learning Continuous Controllers..............................................46

Activating Bypass or Tap Functions with Program Change

Messages ............................................................................47

Clearing a Learned Assignment...............................................48

MIDI Clock................................................................................49

MIDI Dumps .............................................................................49

MIDI Implementation Chart ......................................................50

Specifications.........................................................................52

Getting Started .........................................................................1

Introduction............................................................................1

Front Panel Overview ............................................................2

Setting Audio Levels

Rear Panel Connections........................................................4

Audio Connections • Headphones • Footswitch

Basic Operation........................................................................7

Selecting Programs ...............................................................7

Single Programs • Dual Programs • User Programs

Editing ...................................................................................9

Tap Tempo Functions: Varying the rhythm • Audio

Tap • Setting Tempo via MIDI

Bypass.................................................................................11

Storing Programs.................................................................12

System Mode ..........................................................................13

System Mode Parameters ...................................................14

Bypass • Patching • Program Load • Digital Output

MIDI OUT/THRU • MIDI Pgm Change • MIDI Clock

Receive • Tempo • MIDI Dumps

Table of Contents

Getting Started

Introduction

ThankyouforyourpurchaseoftheMPX

100 Dual Channel Processor.

The MPX 100 is a true stereo dual-

channel processor with 24-bit internal pro-

cessing, 20-bit A/D-D/A and S/PDIF digital

output.PoweredbyanewversionofLexicon’s

proprietaryLexichip™,theMPX100has240

presetswithclassicreverbprogramssuchas

Ambience, Plate, Chamber and Inverse, as

well as Tremolo, Rotary, Chorus, Flange,

Pitch, Detune, 5.7 second Delay and Echo.

Dual-channel processing gives you two in-

dependent effects in a variety of configura-

tions:DualStereo(Parallel),Cascade,Mono

Split and Dual Mono. To make sure you get the most

out of the MPX 100, be sure to

read the manual.

A front panel Adjust knob allows instant

manipulationofeachpreset’scriticalparam-

eters and an Effects Lvl/Bal 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 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 dual 2-stage

headroomindicators,a headphoneoutput,a

software-selectable MIDI OUT/THRU port,

pushbutton or footswitch selection of dry or

mutedaudiooutputanda20Hz-20kHz±1dB

Frequency Response.

Input

Setsthe levelof theincoming

signal. LEDs indicate accept-

able signal level (green), or

clipping (red).

Output

Controls the analog output level.

Front Panel Overview

VARIATION

Selects program variations for the effect bank cur-

rently selected by the PROGRAM knob (8 variations

foreachSingleeffectand16 variationsforeachDual

effect). When PROGRAMisset to User,selectsone

of 16 memory locations for user programs.

Mix

Controls the proportion of processed

(wet) to unprocessed (dry) signals.

TAP

Flashes for tempo-

based programs. Press

twice to set a tempo.

Hold to have input level

determine tempo.

(When pressed with

Store activates MIDI

Learn.)

Bypass

Mutes or bypasses the signal depending on the

setting of the SystemBypass parameter. (Press for

2 seconds to access System Parameters.)

Effects Lvl/Bal

Sets the level of the Single

effects and the balance of

the Dual effects.

PROGRAM

Selects program banks

(Single, Dual, or User).

Store

Initiates store procedure.

(WhenpressedwithTap,ac-

tivates MIDI Learn.)

Edit LED

Lights to indicate

program is altered

but not stored.

Adjust

Modifies the param-

eters of the current

program.

Setting Audio Levels

1. Start with INPUT set to 9:00 o'clock and

OUTPUTallthewaydown(fully counter-

clockwise).

2. Set the instrument output or effectssend

being input to the MPX 100 to a nominal

level and play, or send audio to the MPX

100.TheLevelLEDs*shouldlightgreen.

IftheClipLEDs light redatthispoint,turn

down the output of the instrument or

effects send until the Clip LEDs remain

off during the loudest passages.

*TheLevelLEDsare offwhentheincomingsignal

is low (more than 30dB below overload). TheClip

LEDs light red when the signal approaches over-

load (-2.5dB). Acceptable signals will cause the

Level LEDs to light green almost continuously,

with the Clip LEDs flashing red on peaks.

3. Whilestillsendingaudio tothe MPX100,

gradually turn up the INPUT control until

the Clip LEDs show red on only the

loudest peaks.

4. Set the MIX control to Dry.

5. Turn OUTPUT to the desired level.

6. IftheMPX100isusingaconsole’ssends

and returns, set the MIX control fully

clockwise(100%wet).Ifyouareusingan

instrument amplifier, start with MIX set

halfway up.

As with any audio product, it is good

practice to first power on all outboard

gear, then the mixer, then any loud-

speakers.

Rear Panel Connections

MIDI

Two 5-pin DIN MIDI connectors

are provided for MIDI IN and soft-

ware selectable MIDI OUT/THRU.

POWER

Use Lexicon 9VACpower pack.

OUPUT

Single-ended (unbalanced) stereo outputs provide +8dBu

typical output level. Use the right output connector for mono

output. If no connection is made at the right output, the left

output can be used to drive headphones at modest volume.

FOOTSWITCH

1/4" TRS connector, for momentary con-

tact footswitch, allows footswitch control

of front panel Tap and Bypass functions.

INPUT

Single-ended (unbalanced) inputs accept levels

aslowas -30dBu.Inputimpedanceis500kΩ.Use

the right input for mono sources. Can be used as

direct input for guitar.

DIGITAL OUTPUT

RCA S/PDIF connector.

Headphones

A stereo signal which is adequate to drive

headphones is available at the left output

(provided no connections are made through

the right output). This feature is provided as

a convenience for practice purposes, and is

intended to provide only modest volume.

Audio Connections

Audio connections to the MPX 100 are

unbalanced and should be made with high

quality shielded cables with 1/4" tip-sleeve

phone plugs at the MPX 100 end.

TheMPX100produceseffectsfromeither

monoorstereosources. Withmonosources,

the dry signal appears, along with audio ef-

fects, at both outputs. For instruments and

sourceswithstereooutputs,usebothinputs.

We recommend using the outputs in stereo

wheneverstereoinputs areused,butifmono

output is required, use the right output jack.

The left and right signals are summed inter-

nally when only the right output is used.

Footswitch

A footswitch connected via the rear-panel

footswitch jack allows control of Tap and

Bypass. A momentary footswitch can be

wiredtoatip-ring-sleeveconnector.Astereo

Y-connector allows two identical single

switches to be used.

Power off the MPX 100 before plugging in

the footswitch. (Otherwise, Bypass will be

enabled.)

A dual-function footswitch with a set of labels

to identify footswitch functionality (Tap and

Bypass) is available from Lexicon dealers.

Modes of Operation

TheMPX100canbeusedastwoindepen-

dent Effects Processors with Dual Program

Variations 11-16. Designate two auxiliary

sends on your console and connect one to

the left MPX 100 input, and the other to the

right input. Refer to the Program Descrip-

tionstotakeadvantage of thisconfiguration.

Connecting to a Balanced Console

Mono Guitar Input with

Mono or Stereo Amplifiers Dual Processor Setup with a Console

Basic Operation

Use the PROGRAM knob to

select the Single, Dual or

User effect you want.

Turn VARATION to

select one of 16

programs.

Selecting Programs

All of the programs on the MPX 100 are

selectedwiththefrontpanelPROGRAMand

VARIATION knobs.

The PROGRAM knob selects Single or

Dual program banks. The VARIATION knob

selects different program versions.

The Single selections are arranged

around the left side of the PROGRAM knob;

the Dual selections and the User bank are

arranged around the right side of the knob.

Single Programs

WhenaSingleprogram isselected, turn-

ingtheVARIATIONknob topositions1-8will

load eight versions of the first effect; posi-

tions 9-16 will load eight versions of the

second effect.

For example, when Plate, Gate is se-

lected, VARIATION 1-8 will load eight differ-

ent Plate programs; VARIATION 9-16 will

load eight different Gate programs.

WhenSpecialFXis selected,theVARIA-

TION knob will load 16 different programs

(one at each knob position).

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