Lexicon MPX R1 Owner's Manual
MPX R1
MIDI Remote Controller
Version 2
User Guide
Unpacking and Inspection
After unpacking the MPX R1, save all packing materials in case you ever need to ship the unit. 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 that interference will not occur
in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the
equipment OFF and ON, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient the receiving antenna
Relocate the computer with respect to the receiver
Move the computer away from the receiver
Plug the computer into a different outlet so that 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.
Copyright 1998 Lexicon Inc., All Rights Reserved.
Lexicon Inc. • 3 Oak Park • Bedford MA 01730-1441 USA • Tel: 781-280-0300 • Fax 781-280-0490 • www.lexicon.com
Lexicon Part # 070-11803
1 Product Overview
Introduction......................................................................................... 1-1
The Front Panel.................................................................................. 1-2
The Rear Panel .................................................................................. 1-3
Installation Notes ................................................................................ 1-4
Power Requirements.....................................................................1-4
Connecting the MPX R1 to an MPX 1 or an MPX G2 .................. 1-4
Stand-alone Configuration ............................................................1-4
2 The MPX R1 as a Dedicated MPX G2 Controller
MPX G2 and MPX R1 Connections.................................................... 2-1
Working in Program Mode .................................................................. 2-1
A/B, Tap/Tempo, Bypass, Toe and Pedal.................................... 2-1
Loading Programs........................................................................ 2-1
Direct Access Mode............................................................... 2-2
Tuner ................................................................................................2-2
FX Mode ..............................................................................................2-3
Relay State Programming .................................................................. 2-4
3 The MPX R1 as a Dedicated MPX 1 Controller
MPX 1 Software Requirements ...........................................................3-1
MPX 1 and MPX R1 Connections ...................................................... 3-1
Working in Program Mode .................................................................. 3-1
A/B, Tap/Tempo, Bypass, Toe and Pedal.................................... 3-1
Loading Programs........................................................................ 3-2
Direct Access Mode............................................................... 3-2
FX Mode ..............................................................................................3-3
Relay State Programming .................................................................. 3-3
Changing Programs vs. Bypassing Effects in a Guitar Rig .................3-4
Using the MPX 1 and the MPX R1 in a Guitar Amp Effects Loop .......3-4
Using the MPX 1 and the MPX R1 in a Preamp/Power Amp Rig or
a Dry/Wet (3-way) Rig.................................................................. 3-5
Using a Series Loop ........................................................................... 3-5
Using a Parallel Loop ......................................................................... 3-6
Contents
4 Using the MPX R1 with Other MIDI Devices
Connections........................................................................................ 4-1
Working in Program Mode .................................................................. 4-1
A/B, Tap/Tempo, Bypass, and Toe Switch ...................................4-1
Loading Programs........................................................................ 4-1
Direct Access Mode............................................................... 4-2
FX Mode ..............................................................................................4-2
Relay State Programming .................................................................. 4-3
Contents, cont'd.
5 Editing
Edit Mode Program Parameters ......................................................... 5-2
Edit Mode FX Parameters .................................................................. 5-5
The Relays ......................................................................................... 5-6
Latching........................................................................................ 5-6
Momentary, normally open........................................................... 5-6
Momentary, normally closed ........................................................ 5-6
Relay State Programming ............................................................ 5-7
Assigning the Relay with tip and ring ........................................... 5-7
Removing Relay Settings for all programs................................... 5-7
6 Advanced Applications
Transmitting Multiple MIDI Messages on Separate MIDI Channels ... 6-1
Setups .......................................................................................... 6-1
Activating Setups and Direct Device Control......................... 6-1
Creating a Setup.................................................................... 6-1
Setup Parameters.................................................................. 6-2
Clearing a Setup.................................................................... 6-3
Direct Device Control.......................................................................... 6-4
Alternative Connections...................................................................... 6-4
2 MIDI Cables and an MSA Adapter ............................................ 6-4
5-pin Connection (1 Cable for two-way MIDI with power
from an adapter) .................................................................... 6-4
7 Troubleshooting
Low Voltage........................................................................................ 7-1
Overheating ........................................................................................ 7-1
Common MIDI Problems .................................................................... 7-1
Adjusting Pedal Tension..................................................................... 7-2
Reinitialization .................................................................................... 7-2
Reinitialization of the MPX R1...................................................... 7-2
Reinitialization of the MPX G2 or the MPX 1 and the MPX R1 .... 7-2
8 Specifications
Specifications ..................................................................................... 8-1
MIDI Implementation .......................................................................... 8-2
Product Overview
1
Product Overview
The MPX R1 MIDI Remote Controller performs as a dedicated MIDI controller
for the Lexicon MPX G2, the MPX 1, or as a stand-alone MIDI control unit. Any
way you use it, you'll appreciate its rugged, road-worthy construction and
straightforward control surface.
The MPX R1 has two basic operating modes: Program Mode and FX Mode.
Program Mode is used for sending MIDI Program Change messages. FX Mode
is used to send other MIDI data such as Controller messages, and for selecting
the unit's built-in 4-state relay. When used with the MPX G2 or MPX 1, FX Mode
functions like a "virtual pedalboard". Individual effect blocks can be turned on
and off, and three-state LEDs (off, red and green) indicate whether the effect
block is unavailable (not programmed as part of the preset), off or on.The front
panel FX button toggles between Program and FX modes.
In this manual, the available functions for different applications are presented
separately — so you can easily find the sections you need to get up and running
quickly.
This first section presents general information about the R1 controls, as well as
some basic information on installation, connections and power requirements.
Chapter 2 concentrates solely on using the R1 with the MPX G2, Chapter 3 on
using the R1 with the MPX 1. Chapter 4 discusses the operation of the R1 as
a stand-alone MIDI controller. Editing functions are discussed in Chapter 5,
followed by a section detailing advanced applications.
Introduction
1-1
The Front Panel
FX
Toggles between Program and FX Modes.
LED off indicates Program Mode is active.
LED on indicates FX Mode is active.
Bypass
Assignable switch sends
a MIDI Controller value
BYPASS ON=127
BYPASS OFF=0
When held, activates the
MPX G2 Tuner.
Bank/Parameter Select
Buttons increment and decrement program banks
or select adjustable parameters for editing. Pressing and holding either button activates fast scrolling.
LexiconMPX R1 Version 2 User Guide
Display
FS1, FS2 and FS3 LEDs light to indicate state of
external foot switches.
3-Digit Display indicates ID number of currently
loaded program.
Tempo LED flashes in time with current tempo rate
when Tap is active.
A/B LEDs light to indicate A/B function is active.
Switches (0-9)
Press to complete a Program Change message which
consists of the current Bank number and the switch
number (0-9). In FX mode, switches can be programmed to transmit any MIDI Controller, Clock commands, Relay settings or MIDI Program Change.
Switches 0-9 are used for entering Program Change
selections in Direct Access Mode.
A/B
Assignable switch, when
used with the MPX 1, activates a variable glide between patched parameters.
Tap
When Tempo LED is flashing, sets tempo.
(Press two or more times in rhythm to establish
tempo rate.)
Programmable Pedal
Operates as an assignable MIDI
Continuous Controller. Toe
Switch allows patched effects to
be turned on and off.
1-2
Toe Switch
Assignable switch sends MIDI Controller value ON=127; OFF=0.
Product Overview
The Rear Panel
Edit/Run
Toggle switch for entering Edit mode.
POWER
Use Lexicon MSA power adapter, or
9 VAC 1 amp equivalent. Jack is
unused when powering the MPX R1
with the 7-pin DIN connector.
MIDI
OUT/REMOTE
5-pin DIN connector for MIDI OUT
or
7-pin DIN connector for MIDI OUT
and bidirectional MIDI remote (for
use with MPX 1 or MPX G2).
IN
5-pin DIN connector receives MIDI
data from other equipment.
THRU
5-pin DIN connector passes any
MIDI data received without change.
Foot Pedal
1/4" Tip/Ring/Sleeve phone jack
provided for foot pedal with 10kΩ
to 50kΩ impedance.
Relay
1/4" Tip/Ring/Sleeve phone jack
software selectable as a momentary or latching switch.
Foot Switch
Foot Pedal
For control-voltage input, use a 1/4" stereo plug with Sleeve connected to
ground, Tip connected to the control voltage, and Ring unconnected or shorted
to ground..
Foot Switch
1/4" Tip/Ring/Sleeve phone
jack for as many as three
independent footswitches.
Relay
1-3
Installation Notes
LexiconMPX R1 Version 2 User Guide
Power Requirements
Connecting the MPX R1
to an MPX 1 or an
MPX G2
Use Lexicon MSA power adapter, or 9 VAC 1 amp equivalent.
Relay
(Amp Channel Select)
Foot Pedal
to AC Power
Source
to Lexicon
MSA Adapter
7-pin DIN
Cable
Foot
Switch
Connect a 7-pin DIN cable between the MPX (1 or G2) and the MPX R1.
Connect the MPX (1 or G2) to the MSA adapter provided with the MPX R1.
Stand-alone
Configuration
to Lexicon
MSA Adapter
MIDI Device 1
MIDI Device 2
5-pin DIN Cable
(Amp Channel Select)
OUT
IN
THRU
5-pin DIN Cable
IN
Relay
Foot Pedal
Foot
Switch
1-4
The MPX R1 as a Dedicated MPX G2 Controller
2
When an MPX R1 is connected to an MPX G2, two-way communication is
accomplished via MIDI System Exclusive messages. This allows immediate
response by both units to actions on either front panel.
Connect the power adapter provided with the MPX R1 to the MPX G2 REMOTE
POWER input jack and to a wall outlet.
Power up the MPX G2 and connect the 7-pin DIN cable provided with the
MPX R1 between the MPX G2 rear panel IN/REMOTE jack and the MPX R1
MIDI OUT/REMOTE.
The MPX R1 will cycle through a power-up routine, lighting various LEDs, and
then display Con. The MPX G2 will display Remote Connected. These
messages indicate that proper bidirectional control has been established.
When the MPX G2 powers up, it will default to Program Mode. The MPX R1
should also power up in Program Mode. (FX button LED should be off.) In this
mode, the MPX R1 sends MIDI Program Change and Bank Select messages to
load MPX G2 programs.
The MPX R1 as a
Dedicated MPX G2
Controller
MPX G2 and MPX R1
Connections
Working in
Program Mode
These four switches and continuous controller transmit specific MIDI System
Exclusive or Control Change messages regardless of the mode of operation.
In this mode, the state of A/B and the Tempo LED rate will automatically update
to the state of the currently loaded program. For example, if you load a program
set to 100 beats per minute (BPM), the MPX R1 will flash at 100 BPM, just as
the MPX G2 does. If you then load a program set to 120 BPM, the Tempo LED
on the MPX R1 will increase from 100 to 120 BPM when the new program loads.
Pressing and holding the TAP button on the MPX R1 will display the current
tempo in BPM on the R1 display.
The first two digits on the display indicate the bank number. The third digit
indicates the program number. The BANK buttons select banks, and switches
0-9 select programs within the displayed bank. Programs are loaded whenever
one of the numbered switches is pressed.
To load a new program within the same bank, press any of the numbered
switches (0-9).
To select a program in a different bank, press the BANK buttons to step to the
bank you want, or hold down either button to scroll through the numbers. The
rightmost digit, which is reserved for program numbers, will turn off during bank
selection. Once you have selected the desired bank, press the numbered switch
to load the program number within that bank.
A/B Tap/Tempo, Bypass,
Toe and Pedal
Loading Programs
2-1
Use the BANK buttons to select a
bank number. The first two digits
on the display show your selection
— bank 23 in this example.
Press one of the switches numbered 0-9 to select a program within
the selected bank. The third digit
shows our selection — program 5.
LexiconMPX R1 Version 2 User Guide
Direct Access Mode
Tuner
Notes displayed when the
MPX G2 Tuner is activated.
You can also enter program numbers directly in Direct Access Mode. Press and
hold the FX button until its LED begins blinking. The display will flash d-A to
indicate that Direct Access Mode is active. Now you can select programs by
directly entering their program numbers. For example, to load MPX G2 Program
135, press 1, then 3, then 5 on the MPX R1.
In this mode, the BANK buttons increment and decrement the program numbers
in consecutive steps.
Press the FX button once to exit to FX Mode, twice to exit to Program Mode.
The MPX G2 tuner can also be viewed on the MPX R1. When the tuner is
activated, the MPX G2 will display a letter corresponding to the closest semitone
it detects (including sharp and flat notes) and indicate whether the note is sharp,
flat, or in tune. The out-of-tune display segments will flash increasingly faster
as a note reaches the correct pitch. The following example shows the display
progression as a flat A is brought in tune.
When the MPX G2 detects a note which is flat
(A in this example), the lower display segments will flash and the Flat LED will light.
2-2
The display segments will flash faster as
the note approaches the correct pitch.
When the correct pitch is reached, the
center display segments will light
steadily, along with the Tune LED.
The MPX R1 as a Dedicated MPX G2 Controller
A detected note which is sharp will be displayed in the same manner, with the
upper display segments and the Sharp LED used as indicators.
When a note is detected as a complete half-tone step up from a natural note, the
LED at the upper right of the displayed letter identifies it as (in this example) an
A#.
An A# is displayed as an in-tune note,
with the # indicator lit.
For more information on Tuner functionality, please refer to the MPX G2 User
Guide.
FX Mode allows you to turn on and off any of the active effects in the current
program. To access FX Mode, press the MPX R1 FX button. The LED next to
the button will light to indicate you are in FX Mode.
The FX LED is lit when FX Mode
is active.
Buttons 1-4 and 6-9 bring MPX G2 effects (Gain, Chorus, Delay, Effect 1,
Reverb, EQ, Insert and Effect 2) in and out of bypass. The LED for each button
indicates the current state of the MPX G2 Effect:
Green = MPX G2 Effect on
Red = MPX G2 Effect bypassed, but available
Off = MPX G2 Effect unavailable
FX Mode
As in Program mode, the R1 will update to match the current MPX G2 A/B,
Tempo and Bypass states of the currently loaded program. If you press any of
these controls on the MPX G2, or if you load a new program from the MPX 1, the
R1 will update accordingly.
2-3
LexiconMPX R1 Version 2 User Guide
Relay State
Programming
You can also control the MPX R1 4-state relay in FX mode.
A relay is simply an electronic switch that can tell a circuit (typically an amp's
channel-switching scheme, or reverb and tremolo status) what "state" to go to.
Manufacturers use different schemes, or "logic states" to accomplish similar
tasks, and the MPX R1 can be programmed to satisfy these requirements,
allowing you, for example, to use your MPX R1 as a replacement for your amp's
channel-switching footswitch.
Storing a Relay State
The relay state can be stored with each MIDI Program Change message. To do
this, select the desired MIDI program on the MPX R1 and press the MPX R1 FX
button to enter FX mode
The relay states are assigned to the following buttons as factory defaults.
ON/OFF 1 = Relay state 1
ON/OFF 2 = Relay state 2
Press the button assigned to the desired relay state and hold the button down
for two seconds. The relay state (for example, CH1) will flash once on the MPX
R1 display to indicate that it has been stored with the program.
Clearing a Relay State
To clear a relay state, press and hold any button not assigned to a relay channel.
Hold this button down for two seconds until – – – flashes once on the display to
indicate the relay state for that program has been removed.
Removing Relay Settings for All Programs
To reset all of the relay settings to Not Assigned, go to Edit: Program Mode
(Press and hold the rear panel EDIT/RUN switch until Edt appears on the
display.) Use the BANK/Parameter Select buttons to select the Relay Initialize
parameter (rEi). Press Yes/+ to reset all of the relays. Note that the relays stay
in their last state (based on the last physical button press) until a button is
pressed to assign a different state. Briefly press and release the rear panel EDIT/
RUN switch to exit Edit Mode.
2-4
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