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 4.0

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 Owners 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 Controlling the LXP15 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 MRCs machine definitions. Two-way communication has been added to allow the MRC to upload user registers directly from Lexicon LXP-1, LXP-5, and LXP-15 multieffects processors for parameter display and control.

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.)
Lexicon MRC V4.0/ MIDI Remote Controller
The following table shows the new internal memory configuration of Version 4.0. MRC Setup Type LXP-1 setups LXP-5 setups LXP-15 setups GMIDI setups Global setups Internal Memories 40
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 Lexicons 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.

to other MIDI devices (controlled by MRC and keyboard)

LXP-15

128 Registers
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 simultaneously by MIDI messages received at the other IN port as well as from the MRCs 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.)
Advanced Two-way Configurations
Computer MIDI Clock Patcher

Additional MIDI devices

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 MRCs 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.

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 MRCs Machine Edit Mode. Each patch allows you to assign one of a variety of MIDI sources or either of the MRCs two external inputs to control any LXP-15 parameter. This makes it possible to control the LXP-15 from eight controllers at the same time, four per LXP-15 setup, and four per LXP-15 machine. Be sure to read about MIDI patching in the Dynamic MIDI section of the MRC V3.0 manual. The MRC and LXP-15 can be connected for either one-way or two-way communication, depending on the application.

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 Machine Edit Mode in the MRC V3.0 manual).
Merging and One-way Communication
to merge MIDI Clock and controllers to merge controllers only

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:
Merging Options for One-way Communication
IN1 -> OUT1 <ON/OFF> When set to ON, all incoming MIDI received on IN1 is merged with MRC OUT1. Use this to merge MIDI Clock with MRC output for Tempo patching on the LXP-15. 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. When set to ON, all incoming MIDI received on IN2 is merged with MRC OUT2. Use this to merge MIDI Clock with MRC output for Tempo patching on the LXP-15. When set to ON, any combination of MIDI controllers, Pitch Bend, Aftertouch, Note numbers and Program Change messages received on IN2 can be merged with MIDI OUT1.
IN1 -> OUT2 <ON/OFF>
IN 2 -> OUT2 <ON/OFF>
IN2 -> OUT1 <ON/OFF>
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 LXP15 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#.
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.

Establishing Two-way Communication
When configured for two-way communication, the MRC requests parameter data from the LXP-15 and displays it for editing. The edited values are sent back to the LXP-15. This back and forth communication, or hand shaking, occurs automatically once communication is established between the two units. 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 and MRC in the same state. With two-way communication you have the option of setting the LXP-15 to the state of the MRC, or of setting the MRC to the state of the LXP-15. The following procedure describes both options: 1. On the MRC, enter Machine Select Mode by pressing MACH twice. 2. Move the leftmost slider all the way up to select SYSTEMS PARAMETERS and press ENTER. Use switches 1, 2 and 3 to set MIDI MERGE to OFF for the IN and OUT connected to the MRC as shown below: If the LXP-15 is connected to IN/OUT1. IN1 -> OUT1 MIDI MERGE <OFF>
If the LXP-15 is connected to IN/OUT2. IN2 -> OUT2 MIDI MERGE <OFF>
3. Press ENTER to return to Machine Select Mode. 4. Use the leftmost slider, the MACH button or the keypad to select an LXP15 type machine. (Machine #3 is an LXP-15 machine when the MRC is shipped from the factory.) 5. Confirm that the MIDI cables are connected to the same input/output pair as the displayed OUT#.
6. Confirm that the LXP-15 is set to receive on the same MIDI channel as the displayed CH#. 7. 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. 8*. To set the LXP-15 to the same state as the MRC, 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. OR To set the MRC to the same state as the LXP-15, press ENTER on the MRC to send the LXP-15 parameters to the MRC. The parameters displayed by the MRC will change to show the values received from the LXP-15. 9. You can confirm that two-way communication has been established by changing any parameter value from the LXP-15 front panel and then pressing ENTER on the MRC. The appropriate parameter display on the MRC will change to show the new value. * (Step 8 only needs to be done the first time communication is established between the two units.) With two-way communication, you can update the MRC values to match those currently active in the LXP-15. This is particularly useful if youve changed the LXP-15 at the front panel and want to transfer the new settings to the MRC for further editing. To update the MRC, simply press ENTER at any time while in Machine Run Mode. This will automatically transfer and display the active LXP-15 parameters.

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 LXP15 type machine. (Machine #3 is an LXP-15 machine when the MRC is shipped from the factory.) 3. Press ENTER to put the MRC into Machine Run Mode.
4. Press SETUP to enter Setup Select Mode. 5. Use the leftmost slider, the SETUP button, or the keypad to select the desired setup. Pressing on the keypad switches the display between SETUP# and EXTRN#. While SETUP# is displayed, you can use the keypad to select any internal setup (116). While EXTRN# is displayed, you can use the keypad to select any external setup (1128). 6. Press ENTER to load the setup into the MRC and LXP-15.
Communication Problems If the MRC is unable to communicate with the LXP-15, it will display one of two error messages: No Target, or SYNCH TIMEOUT. The No Target message is displayed if the MRC cannot find the LXP-15. This can occur if the LXP-15 is not connected properly or if it is set to a different MIDI channel than the MRC. To recover from a No Target error, it is necessary to reestablish communication with the LXP-15. To do this, repeat the procedure in Establishing Two-way Communication.
The SYNCH TIMEOUT message is displayed if MIDI MERGE for the IN/ OUT ports connected to the LXP-15 is set to ON, or when MIDI data is received faster than it can be processed by the MRC. To recover from a SYNCH TIMEOUT error, simply press ENTER (and confirm that MIDI MERGE is set to OFF).
Viewing and Editing LXP-15 Setup Parameters LXP-15 setup parameters are viewed and edited on six MRC display pages. Pages can be selected by pressing PAGE repeatedly, or by pressing the desired page number on the keypad.
To edit LXP-15 parameters from the MRC, simply select the desired page and move the slider of the parameter you want to edit. The new value is displayed on the MRC and transmitted to the LXP-15. (You can see the parameter changes on the LXP-15 when MRC sliders are moved, if the LXP15s Update parameter is set to ON, PAGE is turned to the appropriate parameter page, and VIEW is pressed to display the parameter values.)

Page 1 MIX Mix 0-100% Page 4 PDELY Predely 0-262ms PITCH N/A THIS ALGO FINE TREBLE Treble 320Hz-11.6kHz, FDBK PdlyFbk -99% to +99% LFO LFO Rat.03Hz-4.84Hz BASS BassMpy.35x-2.50x
Full Page 5 DECAY Decay.6-6.1s INLVL InLevl 0-100% SIZE Size 8M-87M WPAN Wet Pan 100%L-51%L, Center, 51%R-100%R DIFFUS Diffus 0-100%

OUTLVL OutLevl 0-100%

Chorus Delay
Page 1 MIX Mix 0-100% DELY3 Delay 3 0-1.04s Page 4 INLVL InLevl 0-100% DELY1 Delay 1 0-794ms PITCH N/A THIS ALGO WPAN Wet Pan 100%L-51%L, Center, 51%R-100%R DELY2 Delay 2 0-1.04s FDBK3 Feedbk3 -99% to +99% TREBLE Treble 320Hz-11.6kHz, Full DIFFUS Diffus 0-100% DPAN Dry Pan 100%R-51%R, Center, 51%R-100%R CHRAT ChorRat 1-16 LFO LFO Rat.03Hz-4.84Hz OUTLVL OutLevl 0-100%
MRC/LXP-15 Presets When shipped from the factory, MRC Version 4.0 has 10 setups loaded into its internal memory. Six additional memory spaces are left blank. You may want to use these setups as is, or modify them to your own taste. Be aware that changes you make will overwrite the factory-loaded setups when you perform a store operation. Brief descriptions of the 10 presets follow:
#1 Big Hall This is a preset which emulates a rather large space (67 meters) with a long decay time (2.1s). This preset will add depth to any sound source. Great starting point for vocals. #2 My Room This preset is a smaller space (31 meters) with a strong reflection added for wall simulation. The bottom end is rolled off to reduce muddiness. This preset was originally written with guitar in mind. However, it's a good basic fill with anything. #3 Glide Rm This preset makes use of the gliding delay line which modulates moderately slowly in combination with a medium size room. If it sounds too strange, bring the LFO Rate up to 2.12Hz. Experiment also with changing the RMIX (Reverb Mix) control. #4 DelyVerb This preset combines 70ms delay reflection with a small (18 meters) tight (0.7s) room. Good on anything. #5 HarmMIDI This preset makes use of Dynamic MIDI patching where MIDI Note values are scaled to the coarse pitch parameter. NOTE: In cases where no MIDI Note data is being transmitted into the LXP-15, the default pitch will be -2 octaves.
#6 Eko Roll This multi-effects preset combines 60ms and 90ms of delay to the left and right outputs. The pitch shifter is lowered slightly to create a chorusing effect. The reverb is mixed 50/50 with the delay section. It has a small/tight character, but with a 30ms pre-delay for additional space separation from the source. #7 Gate It Get it? #8 V4 Plate This reverb preset is pretty close to a well-tuned plate. 40ms of pre-delay is utilized for space. Change the SIZE parameter to suit the application. #9 V4Chorus Straight ahead multivoice chorus. Sound sources generally "fatten up" when put through this preset. #10 ChorsEko This preset combines recirculating echoes with a moderate chorusing effect. Adjust Dely3 to fit the tempo of the sound source. Great effect on lead or vocal tracks.

LXP-15 Patch Destinations
Dly/Rvb DLY1-F DLY1-C FDBK1 DLY2-F DLY2-C FDBK2 DLY3-F DLY3-C OCTAVE PTCH-C PTCH-F RTIME TDECAY BASS SIZE DIFF HICUT LOCUT RMIX WPAN DPAN MIX OUTLVL INLVL RATE NONE Glidely Gldyhi Gldfbk Delay 2 Delay2Hi Decay Treble BassMpy Size Diffus HiCut LoCut Rvb Mix
Pch/Dly Gate Plate Algthm (global patches only) Predely Predely Predely Pdlyhi PredlyHi PredlyHi PdlyFdbk PdlyFdbk PdlyFdbk Delay L DlyHi Feedbak Delay R DlyRhi Pitch Intervl PchFine Decay Slope Decay Treble Treble Treble BassMpy 14 BassMpy Size Size Size Diffus Diffus Diffus HiCut LoCut Rvb Mix WetPan DryPan Mix OutLevel InLevl LFORat Setup + (global patches only) Setup - (global patches only) Cho Dly Delay Feedback 3 Delay 6 Delay ChoRat Diffus Treble 18 19

Editing the Setup Name

LXP-15 SETUP C h o ChorsEko r

LXP-15 SETUP s E

ChorsEko o
Use the sliders and switches on these two display pages to change the setup name. Each slider/switch selects one of the eight characters in the name. NOTE: Setups named from the LXP-15 front panel can have as many as twelve characters. The MRC can only access the first eight of these. The extra characters will be stored (unchanged) along with the changed name when the setup is stored in an LXP-15 register from the MRC. They can be changed or cleared from the LXP-15 front panel (via the NAME page).
Controlling the LXP-5 with Two-Way Communication
4. Controlling the LXP-5 with Two-Way Communication
Two way communication allows you to access and view parameters stored in the LXP-5s 128 internal registers. You can connect one or two LXP-5s to the MRC for two-way communication. Two MIDI cables are required for each LXP-5. The LXP-5 MIDI OUT and MIDI IN can be connected to the MRC IN1 and OUT1 or MRC IN2 and OUT2. Be sure the switch on the back of the LXP5 is set to OUT (see illustration).
Additional controllers Other MIDI devices
Rear panel MIDI switch must be set to "OUT"
When connected for two-way communication, the merging function for the input port connected to the LXP-5 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 cant 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.)
MIDI data from the input port which is not connected to the LXP-5 can be merged with the data at the output port used for two-way communication. This is useful when you are using an LXP-5 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: Merging Options for Two-way Communication

Two-way Control of Multiple LXP-5s

T H R U LXP-5

can be patched to LXP machines controlling both LXP-5s Other MIDI devices
Using two-way communication you can control two LXP-5s at once, one for each input/output pair. If you have a high quality MIDI merger you can control multiple LXP-5s on the same input/output pair. (Each LXP-5 and its corresponding MRC machine must be assigned to a different MIDI channel.) As long as the LXP-5 MIDI OUT is connected to the appropriate MRC IN you can maintain two-way communication with it, even if other devices are daisy chained to the MRC OUT. This is useful, for instance, when you want to control the LXP-5 and one or more sound modules from a sequencer or keyboard. (See illustration.)
controlled by MRC sliders when LXP-5 Mach is displayed; always controlled by machine patches if they are turned on
MRC running an LXP-5 machine
It is important to realize that all machines defined in the MRC are active even when they are not being displayed. This means that if you use Machine Edit Mode to create an LXP-5 machine with MIDI patches (as described in Dynamic MIDI in the MRC V3.0 manual), the LXP-5 will be controlled by those patches no matter what parameters (from any machine type) are being displayed on the MRC. This feature makes it possible for the MRC to simultaneously control as many as sixteen LXPs and other MIDI devices in any combination.

LXP-5 Setups

LXP-5 machine types have a bank of sixteen user-programmable memories. Each of these memories stores a complete set of LXP-5 parameters and is referred to in the MRC as an Internal Setup. When connected for twoway communication, you can also upload the parameters from any of the 128 user registers in the LXP-5. These are referred to in the MRC as External Setups (abbreviated EXTRN in the MRC display).

LXP-5 External

Selecting an LXP-5 Setup Once communication has been established between the MRC and the LXP5, different internal and external setups can be selected whenever you are running an LXP-5 machine. If the MRC is not currently running an LXP machine, you must first select one, then select the desired setup. Heres how
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 LXP5 type machine. (Machine #2 is an LXP-5 machine when the MRC is shipped from the factory.)
3. Press ENTER to put the MRC into Machine Run Mode. 4. Press SETUP to enter Setup Select Mode. 5. Use the leftmost slider, the SETUP button, or the keypad to select the desired setup. Pressing on the keypad switches the display between SETUP# and EXTRN#. While SETUP# is displayed, you can use the keypad to select any internal setup (116). While EXTRN# is displayed, you can use the keypad to select any external setup (1 128). 6. Press ENTER to load the setup into the MRC and LXP-5.

Communication Problems If the MRC is unable to communicate with the LXP-5, it will display one of two error messages: No Target, or SYNCH TIMEOUT. The No Target message is displayed if the MRC cannot find the LXP-5. This can occur if the LXP-5 is not connected properly or if it is set to a different MIDI channel than the MRC. To recover from a No Target error, it is necessary to reestablish communication with the LXP-5. To do this, repeat the procedure in Establishing Two-way Communication.
The SYNCH TIMEOUT message is displayed if MIDI MERGE for the IN/ OUT ports connected to the LXP-5 is set to ON, or when MIDI data is received faster than it can be processed by the MRC. To recover from a SYNCH TIMEOUT error, simply press ENTER (and confirm that MIDI MERGE is set to OFF).
Viewing and Editing LXP-5 Setup Parameters LXP-5 setup parameters are viewed and edited on seven MRC display pages. Pages can be selected by pressing PAGE repeatedly, or by pressing the desired page number on the key pad.
To edit LXP-5 parameters from the MRC, simply select the desired page and move the slider of the parameter you want to edit. The new value is displayed on the MRC and transmitted to the LXP-5. (You will see the LEARN LED
flicker when sliders are moved on the MRC.) Refer to the MRC V3.0 Owners Manual for a complete description of how to use the MRC to edit LXP-5 setup parameters.
Using the and ENTER Keys While in Machine Run Mode, the key transmits the current values of all parameters to the LXP-5. Use it to reset the LXP-5 to the values displayed by the MRC. (You would do this, for example, if LXP-5 parameters are inadvertently changed from its front panel.) If you are using two-way communication, you can press ENTER to update the MRC to the current parameter values of the LXP-5. This allows you to transfer new settings to the MRC after front panel adjustment of the LXP-5. Storing Setups from Machine Run Mode You can store a setup youve created in any one of the MRCs sixteen internal setups, or in any one of the LXP-5s 128 user registers. Heres how:
1. On the MRC, press STORE to enter Setup Store Mode. 2. Move slider 2 to select MRC SETUP or LXP-5 RGSTR 3. Use slider 1, the SETUP key or the keypad to select a setup number. Valid numbers for MRC setups are 116. For LXP-5 registers, valid numbers are 1128. The display will blink if you enter an invalid number. (Simply enter a valid setup number if this occurs.) 4. Press ENTER to store the setup and return to Machine Run Mode OR Press MACH to exit Setup Store Mode and return to Machine Run Mode without storing the setup.

MRC/LXP-5 Presets

When shipped from the factory, MRC Version 4.0 has 10 setups loaded into its internal memory. Six additional memory spaces are left blank. You may want to use these setups as is, or modify them to your own taste. Be aware that changes you make will overwrite the factory-loaded setups when you perform a store operation. Brief descriptions of the 10 presets follow: #1 DetunHall This preset offers a combination of reverb with a slight pitch shift which gives a smooth chorusing effect. Adjust the RLVL to suit your application. This preset was originally written with a clean, compressed guitar in mind. #2 MATdelay Use MIDI Tempo to automatically set the coarse delay times for Delay 2 and Delay 3. #3 SloFlang Slow Flange is intended to be used totally wet through a pre-fader send for maximum effect. #4 SlapDetn This Pitch/Delay preset combines 155ms master delay with a slight pitch shift down. A short, bright reverb is mixed 59% into the delay sound. This preset works well on guitar or smooth background voices. #5 ChorusUp This is a Pitch/Delay preset which combines a moderate amount of feedback (44%) with a 46ms delay line which is pitched up +2 fine steps. The whole effect is then blended into a reverb module which is moderately sized. This is a way cool, heavy effect. #6 E/G Slap This is a Delay/Reverb preset which uses a filtered (2.49k) delay line set to 90ms with a 22% feedback ratio.

Establishing Two-way communication When configured for two-way communication, the MRC requests parameter data from the LXP-1 and displays it for editing. The edited values are sent back to the LXP-1. This back and forth communication, or hand shaking, occurs automatically once communication is established between the two units.
In order to establish communication after the initial connections are made and both units are turned on, it is necessary to put the LXP-1 and MRC in the same state. With two-way communication you have the option of setting the LXP-1 to the state of the MRC, or of setting the MRC to the state of the LXP-1. The following procedure describes both options: 1. On the MRC, enter Machine Select Mode by pressing MACH twice. 2. Move the leftmost slider all the way up to select SYSTEMS PARAMETERS and press ENTER. Use switches 1, 2 and 3 to set MIDI MERGE to OFF for the IN and OUT connected to the MRC as shown below: If the LXP-1 is connected to IN/OUT1. IN1 -> OUT1 MIDI MERGE <OFF>
If the LXP-1 is connected to IN/OUT2. IN2 -> OUT2 MIDI MERGE <OFF>
3. Press ENTER to return to Machine Select Mode. 4. Use the leftmost slider, the MACH button or the key pad to select an LXP-1 type machine. Machine #1 is an LXP-1 machine when the MRC is shipped from the factory. 5. Confirm that the MIDI cables are connected to the same input/output pair as the displayed OUT#. 6. Press ENTER to put the MRC into Machine Run Mode. The MRC display will change to show the first page of LXP-1 Setup parameters.
7. Confirm that the LXP-1 and MRC are set to the same MIDI channel by pressing the MIDI button on the LXP-1 while moving any of the sliders on the MRC. The MIDI LED on the LXP-1 will flicker. 8*. To set the LXP-1 to the same state as the MRC, press to send the MRC Setup parameters to the LXP-1. The parameter values displayed by the LXP-1 will change to match those displayed by the MRC. OR To set the MRC to the same state as the LXP-1, press ENTER to send the LXP-1 parameters to the MRC. The parameters displayed by the MRC will change to show the values received from the LXP-1 9. You can confirm that two-way communication has been established by selecting a new preset from the LXP-1 front panel and then pressing ENTER on the MRC. The MRCs displays will change to the parameter values of the new register. * (Step 8 only needs to be done the first time communication is established between the two units.)

With two-way communication, you can update the MRC values to match those currently active in the LXP-1. This is particularly useful if youve changed the LXP-1 from its front panel and want to transfer the new settings to the MRC for further editing. To update the MRC simply press ENTER at any time while you are in Machine Run Mode. This will automatically transfer and display the active LXP-1 parameters.
Two-way Control of Multiple LXP-1s

T H R U

can be patched to LXP machines controlling both LXP-1s
Using two-way communication you can control two LXP-1s at once, one for each input/output pair. If you have a high quality MIDI merger you can control multiple LXP-1s on the same input/output pair. (Each LXP-1 and its corresponding MRC machine must be assigned to a different MIDI channel.) As long as the LXP-1 MIDI OUT is connected to the appropriate MRC IN you can maintain two-way communication with it, even if other devices are daisy chained to the MRC OUT. This is useful, for instance, when you want to control the LXP-1 and one or more sound modules from a sequencer or keyboard. (See illustration.)
In this diagram, MIDI data from the sequencer and pedal moves from EXT2 (set to NORMAL) can be sent to other MIDI devices via the THRU port of the LXP-1.
controlled by MRC sliders when LXP-1 Mach is displayed; always controlled by machine patches if they are turned on
MRC running an LXP-1 machine It is important to realize that all machines defined in the MRC are active even when they are not being displayed. This means that if you use Machine Edit Mode to create an LXP-1 machine with MIDI patches (as described in Dynamic MIDI in the MRC V3.0 manual), the LXP-1 will be controlled by those patches no matter what parameters (from any machine type) are being displayed on the MRC. This feature makes it possible for the MRC to simultaneously control as many as sixteen LXPs and other MIDI devices in any combination.

LXP-1 Setups

LXP-1 machine types have a bank of sixteen user-programmable memories. Each of these memories stores a complete set of LXP-1 parameters and is referred to in the MRC as an Internal Setup. When connected for twoway communication, you can also upload the parameters from any of the 128 user registers in the LXP-1. These are referred to in the MRC as External Setups (abbreviated EXTRN in the MRC display).

LXP-1 External

Selecting an LXP-1 Setup Once communication has been established between the MRC and the LXP1, different internal and external setups can be selected whenever you are running an LXP-1 machine. If the MRC is not currently running an LXP machine, you must forst select one, then select the desired setup. Heres how :

1. On the MRC, press STORE to enter Setup Store Mode. 2. Move slider 2 to select MRC SETUP or LXP-1 RGSTR 3. Use slider 1, the SETUP key or the keypad to select a setup number. (The display will blink if you enter an invalid number. Valid numbers for MRC setups are 116. For LXP-1 registers valid numbers are 1128.) 4. Press ENTER to store the setup and return to Machine Run Mode OR Press MACH to exit Setup Store Mode and return to Machine Run Mode without storing the setup.

MRC/LXP-1 Presets

When shipped from the factory, MRC Version 4.0 has 10 setups loaded into its internal memory. Six additional memory spaces are left blank. You may want to use these setups as is, or modify them to your own taste. Be aware that changes you make will overwrite the factory-loaded setups when you perform a store operation. Brief descriptions of the 10 presets follow: #1 Big Hall Large lush space. Room size is 67M. Good starting point for any large reverb. Change PDLY to emulate sounds bouncing off the rear of the hall. #2 SmalHall Very tight, moderately bright space with a size of 28M, reverb time of 1.5 secons, and a small amount of feedback (22%). #3 SmalRoom Definitely a room very small characteristics, moderately diffused (61%). #4 Med Gate Medioum gate time (258) and steep slope. Great on drums. #5 GoldPlat A rich sounding plate, very diffused (100%), with a slight low frequency rolloff (BASS=0.71x). #6 SkiSlope Inside-out room. Good for percussion and other effects. #7 SizlEkoz Rolling flange with ping-pong stereo delays (29ms and 57ms.) #8 Rich Rez Rich resonant sound with 200ms delay. Nice for acoustic or sampled material.
#9 LongChrs Delayed effect with feedback (32%) at HICUT filter (4.88kHz). #10 MultiTap Offbeat stereo bouncing delays with diffusion (100%) on each recirculating pass.
Changing LXP-1 MIDI THRU to MIDI OUT
Using a Phillips-head screwdriver, remove the 2 screws from either side of the LXP-1 front panel. Do not remove the two screws on the rear panel. With a 9/16" nut driver, or miniature pliers, carefully unscrew the 5 nuts and washers surrounding the 1/4" jacks labeled DEFEAT, OUTPUTS and INPUTS. Holding the unit with both hands, gently separate the outer case from the front panel. Slide the front panel and its circuit board out of the case. Avoid touching any of the parts on the board unless you are confident that both you and your LXP-1 are properly grounded. (The thin rubber protectors on the sides of the circuit board may come off. These can easily be replaced prior to reinserting the board and the front panel.) Locate the single small jumper (usually a small blue plastic piece) at the back of the circuit board close to the MIDI jacks. Lift the jumper off of the two pins it is sitting on and place it on the two pins beside it. Your MIDI THRU port is now a MIDI OUT port. Carefully reinsert the board into the outer case, sliding the rubber protectors into their grooves. Seat the front and rear panel properly so that the 1/4" jacks protrude from the proper holes. Replace the 5 washers and nuts without over-tightening them. Replace the 2 front panel screws. Your LXP1 is now ready to communicate with the Version 4.0 MRC. After performing this procedure once, you will se that the changeover is very quick and simple. If you ever want the port to act as a MIDI THRU again, you can always move the jumper back to its orginal position.