Lexicon MRC Addendum
Owner's Manual
Addendum
MRC V4.0
MIDI
Remote
Controller
Copyright ©1992
All Rights Reserved.
Lexicon Part #070-09430
Lexicon Inc.
3 Oak Park
Bedford, MA USA
Telephone 781-280-0300
Fax 781-280-0490
Table of Contents
1. Introducing Version 4.0
V. 4.0 Features ......................1-1
V. 4.0 Changes ...................... 1-1
2. Controlling the LXP series of
multi-effects processors
Advantages of MRC control...2-1
One-way and Two-way
Communications.................2-2
Overview of One-way
Features ..........................2-5
Overview of Two-way
Features ..........................2-6
Advanced Two-way
Configurations ................. 2-7
3. Controlling the LXP-15
One-way Connections ........... 3-1
Merging and One-way
Communication ............... 3-2
Establishing One-way
Communication ............... 3-3
One-way Control of
Multiple LXP-15s .............3-5
Two-way Connections ........... 3-6
Merging and Two-way
Communication ............... 3-6
Establishing Two-way
Communication ............... 3-8
Two-way Control of
Multiple LXP-15s ...........3-10
Control Flow.........................3-11
LXP-15 Setups.....................3-12
Selecting an LXP-15
Setup.............................3-12
Communication Problems 3-13
Viewing and Editing LXP-15
Setup Parameters .......3-13
Using the ✳ and ENTER
Keys .............................. 3-14
LXP-15 Display Pages .....3-14
MRC/LXP-15 Presets .......3-18
Storing Setups from
Machine Run Mode ....... 3-20
Editing LXP-15 Setups ..... 3-20
4. Controlling the LXP-5 with
Two-Way Communication
Two-way Connections ........... 4-1
Merging and Two-way
Communication ............... 4-1
Establishing Two-way
Communication ............... 4-3
Two-way Control of
Multiple LXP-5s ............... 4-5
Control Flow...........................4-6
LXP-5 Setups.........................4-7
Selecting an LXP-5
Setup...............................4-7
Communication Problems .. 4-8
Viewing and Editing LXP-5
Setup Parameters .........4-8
Using the ✳ and ENTER
Keys ................................ 4-9
Storing Setups from
Machine Run Mode ......... 4-9
MRC/LXP-5 Presets .........4-10
5. Controlling the LXP-1 with
Two-Way Communication
Two-way Connections ........... 5-1
Merging and Two-way
Communication ............... 5-1
Establishing Two-way
Communication ............... 5-3
Two-way Control of
Multiple LXP-1s ............... 5-5
Control Flow...........................5-6
LXP-1 Setups.........................5-7
Selecting an LXP-1
Setup...............................5-7
Communication Problems .. 5-8
Viewing and Editing LXP-1
Setup Parameters .........5-9
Using the ✳ and ENTER
Keys ................................ 5-9
Storing Setups from
Machine Run Mode ......... 5-9
MRC/LXP-1 Presets .........5-10
Changing LXP-1 MIDI
THRU to MIDI OUT ....... 5-11
Introducing Version 4.0Owner's Manual Addendum
1. Introducing Version 4.0
Congratulations on your purchase of the MRC V4.0 MIDI Remote Controller.
Version 4.0 adds some significant new features and changes to Version 3.0
of the MRC. These changes and features are based on feedback from
present MRC users.This addendum is not a replacement of the Version 3.0
MRC Owner’s Manual. It describes only the new features and changes
added by Version 4.0. If you are new to the MRC and MIDI control, be sure
to refer to the V3.0 manual for general descriptions of, and operational
guidelines for the MRC. We also suggest that you read
15
in this addendum for the best understanding of MRC control with any LXP
effects processor.
V4.0 Features
The following features have been added to the MRC by Version 4.0:
• The MRC can now control the Lexicon LXP-15 Multi-Effects Processor.
A new machine type for the LXP-15 has been added to the MRC’s
machine definitions.
•
Two-way communication
user registers directly from Lexicon LXP-1, LXP-5, and LXP-15 multieffects processors for parameter display and control.
has been added to allow the MRC to upload
Controlling the LXP-
V4.0 Changes
The following changes have been made by Version 4.0:
• The PCM-70 machine type has been replaced by the LXP-15 machine
type. Although Version 4.0 cannot be used as a dedicated controller for
the PCM-70, you can still control the PCM-70 from a GMIDI machine
type.
• The two-way communication features of Version 4.0 eliminate the need
to hold large banks of LXP-1, LXP-5, and LXP-15 setups in internal
memory. (Each LXP-type machine can access sixteen internal MRC
presets
and
128 external LXP registers.)
1-1
Lexicon MRC V4.0/ MIDI Remote Controller
The following table shows the new internal memory configuration of Version
4.0 .
MRC Setup Type Internal Memories
LXP-1 setups 16
LXP-5 setups 16
LXP-15 setups 16
GMIDI setups 20
Global setups 40
1-2
Owner's Manual Addendum Controlling the LXP Series of Multi-Effects Processors
2. Controlling the LXP Series of
Multi-Effects Processors
One of the most powerful features of the MRC is its ability to be used as a
dedicated controller for Lexicon’s LXP-1, LXP-5 and LXP-15 multi-effects
processors. For maximum flexibility with your setup, the MRC can control
LXP devices using either one-way or two-way MIDI communication. This
section presents the general issues of MRC/LXP control and communication. The following sections provide specific information for MRC control of
each type of LXP processor.
Advantages of MRC control
As a dedicated LXP controller, the MRC offers functions similar to those
provided by a computer equipped with editor/librarian programs for the three
LXP effects units, as well as a MIDI merger/mapper. The MRC is much
easier to move around than a computer — so it’s a great way to take MIDI
control on the road.
With its 2€×24 character display and its ability to control up to sixteen LXP
processors simultaneously, the MRC becomes the “front end” to your LXP
devices — just put them in your rack and let the MRC take over.
If you’re using a computer with your MIDI system, you can run your favorite
computer-based sequencer and simultaneously use the MRC to edit and
control your LXPs. (The MRC’s GMIDI functions can also be controlling
other MIDI instruments while the sequencer is running)
2-1
Lexicon MRC V4.0/ MIDI Remote Controller
The MRC has several advantages as a dedicated remote controller for
Lexicon’s LXP-1, LXP-5, and LXP-15 multi-effects processors. Here are
some of the possibilities:
• Simultaneous editing and display of as many as four parameters
• Access as many as sixteen LXPs from a single MRC
• Route two analog controllers (foot pedals) to multiple LXPs
• Enhances programmability of the LXP-1 (The MRC lets you control
parameters that aren’t accessible from the LXP-1 front panel. Internal
Dynamic MIDI patches are expanded from two to four
• Finer control resolution of LXP-1 and LXP-5 parameters
• Fine and coarse control of LXP-15 delay time parameters speeds up
delay programming
• As many as four
additional
Dynamic MIDI patches per LXP
• Internal storage of sixteen setups each for LXP-1, LXP-5 and LXP-15
machine types
• Record the movements of MRC sliders and external controllers with any
MIDI sequencer, allowing the MRC to function as an
automated
effects
controller
One-way and Two-way Communications
Depending on the application, MIDI systems can be configured for one-way
or two-way communication. For example, when a MIDI keyboard is used to
control a MIDI sound module, one-way communication is usually sufficient.
A single cable is run from MIDI OUT on the keyboard to MIDI IN on the sound
module. This is generally thought of as a master/slave system. Additional
slaves can be controlled by the master via MIDI THRU.
Keyboard Sound
Module
2-2
Owner's Manual Addendum Controlling the LXP Series of Multi-Effects Processors
Two-way communication is used for more sophisticated applications. For
instance, in order for a sequencer to record
and
playback MIDI data from a
single synthesizer, they must be set up for two-way communication. Two
cables are required. One is run from the synthesizer’s MIDI OUT to the
sequencer’s MIDI IN. This sends the MIDI data from the synthesizer to the
sequencer where it is recorded. Another cable is run from the sequencer’s
MIDI OUT to the MIDI IN of synthesizer. This sends the recorded MIDI data
back to the synthesizer, where it is played.
Sequencer
Computer Effects
Synthesizer
Device
Editor/librarian programs for MIDI effects units are other examples of
applications that require two-way communication to upload parameter
settings from the effects device into the computer, and download them from
the computer back into the effects unit.
2-3
Lexicon MRC V4.0/ MIDI Remote Controller
It is important to note that two-way communication creates a closed-loop
between the two MIDI devices. Unlike a one-way configuration, it is not a
simple matter to connect additional devices to a two-way configuration. This
is because MIDI outputs cannot be combined on a single cable without a
MIDI
merger
.
Merger
T
Synthesizer
H
R
U
Computer
Effects
Device
LXP
21
EXT
OUT IN
2121
Synthesizer
MRC
The MRC can be be used in both one-way and two-way configurations.
Since the MRC already “knows” the parameters of the LXP-1, LXP-5 and
LXP-15, it can be used as an editor/librarian in a one-way system. Its dual
in and out ports and built-in merger allow expanded functionality when used
in a two-way configuration. You can, for example, merge selected MIDI
controller messages from MIDI IN 2 with MIDI OUT 1. This makes it possible
to control an LXP from a MIDI keyboard (or other MIDI controller) while the
MRC and LXP are set up for two-way communication.
2-4
Owner's Manual Addendum Controlling the LXP Series of Multi-Effects Processors
Overview of One-way Features
Additional LXPs
or MIDI devices
THRU
LXP-15
(Tempo
Control)
Sequencer,
Keyboards, etc.
LXP-5
MIDI
Clock
Foot Pedal #1
Foot Pedal #2
EXT21OUT IN
2121
MRC
• Simplified MIDI set up
• MRC editing and display of parameter settings for multiple LXP devices
• Multiple LXPs can be controlled from a single MRC output via the MIDI
THRU ports on the LXPs
• MIDI clock can be routed to LXPs for Tempo patching
• Both MRC inputs can be used to route MIDI controllers to LXP internal
MIDI patches
• Each LXP being controlled can have any four of its parameters controlled
by the MRC’s internal MIDI patches
• MRC’s GMIDI machines can control other MIDI devices while MRC is
actively editing LXP parameters
2-5
Lexicon MRC V4.0/ MIDI Remote Controller
• LXPs connected for one-way communication can be controlled simultaneously by MIDI messages received at either IN port, as well as from the
MRC’s sliders, switches and external controllers.
Overview of Two-way Features
to other MIDI devices
(controlled by MRC)
to other MIDI devices
(controlled by MRC
and keyboard)
IN THRU OUT
LXP-15
128 Registers
Keyboard
21
EXT
OUT IN
2121
MRC
• Access to all user registers on the target LXP
• Dual IN/OUT ports make it possible to simultaneously control
two
LXPs
with two-way communication
• Upload and display current settings directly from the target LXP
• An LXP connected for two-way communication can be controlled simul-
taneously by MIDI messages received at the other IN port as well as from
the MRC’s sliders, switches and external controllers.
• Other MIDI devices can be controlled simultaneously by the MRC by
daisy-chaining them to the MIDI OUT used for MRC control. (See
illustration.)
2-6
Owner's Manual Addendum Controlling the LXP Series of Multi-Effects Processors
Advanced Two-way Configurations
Computer
MIDI
Clock
Patcher
Keyboard
21
EXT
OUT IN
MRC
Merge
2121
LXP-15 LXP-5 LXP-1
THRU
Additional
MIDI devices
Merge
Two-way communication requires a separate pair of MIDI IN/OUT ports for
each LXP being controlled. The MRC has two sets of MIDI IN/OUT ports, so
you can control two LXPs in two-way at once using two-way communication.
Control of more than two LXPs with two-way communication is possible, but
requires a MIDI merging device that can handle System Exclusive data. In
MIDI systems with additional hardware such as mergers, THRU boxes, or
patching devices, the MRC’s two-way functions can be expanded to allow
control of more than two LXPs and/or merging of MIDI clock for Tempo
patching while maintaining two-way communication.
2-7
Owner's Manual Addendum
Controlling the LXP-15
3. Controlling the LXP-15
The MRC can be used as a dedicated remote controller for the LXP-15. All
of the LXP-15 parameters are accessible via the MRC. In addition to being
a full-featured editor, the MRC also extends the programmability of the LXP15 by allowing you to create as many as four additional Dynamic MIDI
patches for each LXP-15 sound via the MRC’s Machine Edit Mode. Each
patch allows you to assign one of a variety of MIDI sources or either of the
MRC’s two external inputs to control any LXP-15 parameter. This makes it
possible to control the LXP-15 from
per LXP-15 setup, and four per LXP-15 machine.
eight
controllers at the same time, four
Be sure to read about MIDI patching in the
V3.0 manual.
The MRC and LXP-15 can be connected for either one-way or two-way
communication, depending on the application.
Dynamic MIDI
section of the MRC
One-way Connections
Some examples of applications that call for one-way communications are:
• to connect more than one LXP-15 to the same MRC OUT port
• to route MIDI clock to the LXP-15 for Tempo patches
The MIDI connections are simple. Connect a single MIDI cable from MIDI
OUT 1 of the MRC to MIDI IN of the LXP-15 as shown. We use OUT 1 as
an example since it is the default. Of course, you can edit an LXP-15
“machine” to transmit on OUT 2 if you wish. (See
MRC V3.0 manual).
Machine Edit Mode
in the
3-1
Lexicon MRC V4.0/ MIDI Remote Controller
y
Merging and One-way Communication
to merge MIDI
Clock and
controllers
to merge
controllers onl
LXP-15
EXT21OUT IN
2121
MRC
When connected for one-way communication, you can use the merging
features of the MRC to route MIDI controllers from either MIDI input to the
LXP-15. This is useful when you are using an LXP-15 register that uses MIDI
sources for patching. Merging functions are selected on page 1 of the
SYSTEMS PARAMETERS menu. The different merging options are outlined in the following table:
3-2
Owner's Manual Addendum
Merging Options for One-way Communication
IN1 -> OUT1 <ON/OFF> When set to “ON”,
on IN1 is merged with MRC OUT1. Use this
to merge MIDI Clock with MRC output for
Tempo patching on the LXP-15.
Controlling the LXP-15
all
incoming MIDI received
IN1 -> OUT2 <ON/OFF> When set to “ON”, any combination of MIDI
IN 2 -> OUT2 <ON/OFF> When set to “ON”,
IN2 -> OUT1 <ON/OFF> When set to “ON”, any combination of MIDI
controllers, Pitch Bend, Aftertouch, Note
numbers and Program Change messages
received on IN1 can be merged with MIDI
OUT2.
all
on IN2 is merged with MRC OUT2. Use this
to merge MIDI Clock with MRC output for
Tempo patching on the LXP-15.
controllers, Pitch Bend, Aftertouch, Note
numbers and Program Change messages
received on IN2 can be merged with MIDI
OUT1.
incoming MIDI received
Establishing One-way Communication
When configured for one-way communication, the MRC is the master, and
the LXP-15 is the slave. In order to establish communication after the initial
connections are made and both units are turned on, it is necessary to put the
LXP-15 in the same “state” as the MRC. The following procedure describes
how this is done:
1. On the MRC, enter Machine Select Mode by pressing MACH twice.
2. Use the leftmost slider, the MACH button or the keypad to select an LXP-
15 type machine. (Machine #3 is an LXP-15 machine when the MRC is
shipped from the factory.)
3. Confirm that the MIDI cable is connected to the same output as the
displayed “OUT#”.
3-3
Lexicon MRC V4.0/ MIDI Remote Controller
4. Confirm that the LXP-15 is set to receive on the same MIDI channel as
the displayed “CH#”.
5. Press ENTER to put the MRC into Machine Run Mode. The MRC
display will change to show the first page of LXP-15 Setup parameters.
6. Press ✱ to send the MRC Setup parameters to the LXP-15. The
parameter values displayed by the LXP-15 will change to match those
displayed by the MRC. (This step only needs to be done the first time
communication is established between the two units.)
7. You can confirm that one-way communication has been established by
moving a parameter slider on any of the six MRC parameter pages. The
LXP-15 display for that parameter should change to match the new
value.
In order to see parameters change on the LXP-15 when MRC sliders are
moved, set the LXP-15 “Update” parameter to “ON”, turn PAGE to the
appropriate parameter page, and press VIEW to display the parameter
values.
With one-way communication, the MRC has no way of “knowing” if the
current LXP-15 setup or parameters have been changed. (This could
happen for example, by sending a Program Change message to the LXP15 or by changing parameters or setups from the LXP-15 front panel.) If you
think the LXP-15 has been changed by some other action, simply press the
✱ key on the MRC to transmit the current MRC values to the LXP-15.
3-4
Owner's Manual Addendum
One-way Control of Multiple LXP-15s
Controlling the LXP-15
etc.
THRU
LXP-15
MIDI
Sources
THRU
LXP-15
Additional LXPs
or MIDI devices
21
EXT
OUT IN
2121
MRC
Using one-way communication, you can control as many as sixteen Lexicon
devices at once by defining a separate machine for each device. Multiple
LXP-15 control is very easy to set up since the LXP-15 MIDI THRU port can
be used to “daisy chain” additional units.When two or more LXP-15s are
controlled from the MRC, they (and the MRC machines that control them)
should be set to different MIDI channels, or be connected to different MRC
OUT ports. Different types of LXPs can share the same MIDI channel and/
or MRC OUT ports.
If you want to process multiple audio sources with
identical
LXP effects, you
can daisy chain multiple LXP-15s (or LXP-5s, or LXP-1s) from the same
MRC OUT port and set them all to the same MIDI channel. They can all be
controlled simultaneously from a single MRC machine.
If you want to use a foot pedal or other analog controller as a patch source
for your LXP-15 be aware that you can connect one or two pedals to the MRC
instead of to the LXP-15 rear panel Foot Controller jacks. This allows you to
control
multiple
LXP-15s (or other LXP processors) from the same pedal(s).
3-5
Lexicon MRC V4.0/ MIDI Remote Controller
Two-way Connections
Two way communication allows you to access and view parameters stored
in the LXP-15’s 128 internal registers. You can connect one or two LXP-15s
to the MRC for two-way communication. Two MIDI cables are required for
each LXP-15. The LXP-15 MIDI OUT and MIDI IN can be connected to the
MRC IN1 and OUT1 or MRC IN2 and OUT2.
Merging and Two-way Communication
Additional
MIDI devices
Additional
MIDI devices
can be
merged
to OUT1
EXT21OUT IN
THRU
LXP-15
MIDI Sources
(can be merged
to OUT1)
2121
MRC
When connected for two-way communication, the merging function for the
input port connected to the LXP-15 must be set to “OFF” (If it is set to “ON,”
communication will not be possible and the MRC will display “SYNCH
TIMEOUT” )
NOTE: The MRC can’t merge MIDI clock with an LXP device connected
for two way communication. If you want to use Tempo patches and an
LXP, you must set up one-way communication or use an external merger.
(See
Advanced Two-way Communications.
3-6
)
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