Lexicon MPX R1 User Guide
MPX R1
MIDI Remote Controller
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 1997 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 # 070-12712
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...........................................1-4
Stand-alone Configuration ............................................................1-4
2 The MPX R1 as a Dedicated MPX 1 Controller
MPX 1 Software Requirements ...........................................................2-1
MPX 1 and MPX R1 Connections ...................................................... 2-1
Working in Program Mode .................................................................. 2-1
A/B, Tap/Tempo, Bypass, Toe and Pedal.................................... 2-1
Loading Programs........................................................................ 2-2
Direct Access Mode............................................................... 2-2
FX Mode ..............................................................................................2-3
Relay State Programming .................................................................. 2-3
Changing Programs vs. Bypassing Effects in a Guitar Rig .................2-4
Using the MPX 1 and the MPX R1 in a Guitar Amp Effects Loop .......2-4
Using the MPX 1 and the MPX R1 in a Preamp/Power Amp Rig or
a Dry/Wet (3-way) Rig.................................................................. 2-5
Using a Series Loop ........................................................................... 2-5
Using a Parallel Loop ......................................................................... 2-6
Contents
3 Using the MPX R1 with Other MIDI Devices
Connections........................................................................................ 3-1
Working in Program Mode .................................................................. 3-1
A/B, Tap/Tempo, Bypass, and Toe Switch ...................................3-1
Loading Programs........................................................................ 3-1
Direct Access Mode............................................................... 3-2
FX Mode ..............................................................................................3-2
Relay State Programming .................................................................. 3-3
4 Editing
Edit Mode Program Parameters ......................................................... 4-2
Edit Mode FX Parameters .................................................................. 4-5
The Relays ......................................................................................... 4-6
Latching........................................................................................ 4-6
Momentary, normally open............................................................4-6
Momentary, normally closed ........................................................ 4-6
Relay State Programming .............................................................4-7
Assigning the Relay with tip and ring ............................................4-7
Removing Relay Settings for all programs................................... 4-7
Contents, cont'd.
5 Advanced Applications
Transmitting Multiple Program Changes on Separate MIDI Channels 5-1
Setups .......................................................................................... 5-1
Activating Setups and Direct Device Control......................... 5-2
Creating a Setup.................................................................... 5-1
Setup Parameters.................................................................. 5-2
Clearing a Setup.................................................................... 5-2
Direct Device Control.......................................................................... 5-3
Alternative Connections...................................................................... 5-4
2 MIDI Cables and an MSA Adapter ............................................ 5-4
5-pin Connection (1 Cable for two-way MIDI with power
from an adapter) .................................................................... 5-4
6 Troubleshooting
Low Voltage........................................................................................ 6-1
Overheating ........................................................................................ 6-1
Common MIDI Problems .................................................................... 6-1
Adjusting Pedal Tension..................................................................... 6-2
Reinitialization .................................................................................... 6-3
Reinitialization of the MPX R1...................................................... 6-3
Reinitialization of the MPX 1 and the MPX R1............................. 6-3
7 Specifications
Specifications ..................................................................................... 7-1
MIDI Implementation .......................................................................... 7-2
Product Overview
1
Product Overview
The MPX R1 MIDI Remote Controller performs as a dedicated MIDI controller
for the Lexicon MPX 1, or as a stand-alone MIDI control unit. Either 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 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 1. Chapter 3
discusses the operation of the R1 as a stand-alone MIDI controller. Editing
functions are discussed in Chapter 4, 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.
Bank/Parameter Select
Buttons increment and decrement program banks
(0-25), or select adjustable parameters for editing.
Pressing and holding either button activates fast
scrolling.
LexiconMPX R1 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).
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 User Guide
Power Requirements
Connecting the MPX R1
to an MPX 1
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 and the MPX R1.
Connect the MPX 1 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 1 Controller
2
When an MPX R1 is connected to an MPX 1, two-way communication is
accomplished via MIDI System Exclusive messages. This allows immediate
response by both units to actions on either front panel.
Using the MPX R1 with the MPX 1 requires V1.10 software to be installed in the
MPX 1. (The software version is shown on the MPX 1 display on power up.) Once
this software is installed in your MPX 1, the following simple procedure will get
you up and running quickly. Note that these instructions assume a general
knowledge of MPX 1 operation. If you are a first-time MPX 1 user, please review
the MPX 1 User Guide for general instruction.
Connect the power adapter provided with the MPX R1 to the MPX 1 REMOTE
POWER input jack and to a wall outlet.
Power up the MPX 1 and connect the 7-pin DIN cable provided with the MPX R1
between the MPX 1 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 1 will display Remote Connected. These messages indicate that proper bidirectional control has been established.
The MPX R1 as a
Dedicated MPX 1
Controller
MPX 1 Software
Requirements
MPX1 and MPX R1
Connections
When the MPX 1 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 1 programs.
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 1 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.
Working in
Program Mode
A/B Tap/Tempo, Bypass,
Toe and Pedal
2-1
LexiconMPX R1 User Guide
Loading Programs
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.
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.
Direct Access Mode
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 1 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.
2-2
The MPX R1 as a Dedicated MPX 1 Controller
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, 2, 3, 6, 7 and 8 bring MPX 1 effects (Pitch, Chorus, Delay, Reverb,
EQ and Mod) in and out of bypass. The LED for each button indicates the current
state of the MPX 1 Effect:
Green = MPX 1 Effect on
Red = MPX 1 Effect bypassed, but available
Off = MPX 1 Effect unavailable
FX Mode
As in Program mode, the R1 will update to match the current MPX 1 A/B, Tempo
and Bypass states of the currently loaded program. If you press any of these
controls on the MPX 1, or if you load a new program from the MPX 1, the R1 will
update accordingly.
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 relacement 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
ON/OFF 3 = Relay state 3
ON/OFF 4 = Relay state 4
Relay State Programming
2-3
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