REFERENCE LEVEL switch This switch adjusts the output range of the unit and may be set at either -10dB or +4dB. When using the Xpression with professional studio equipment providing a nominal input level of +4dB, it is recommended that the +4 setting is used for best results. If the Xpression is to be connected to a high sensitivity input, such as the input to a guitar amp, the -10 setting should be used.

4. Rear Panel

RIGHT CHANNEL INPUT jack This standard " mono jack provides input to the right channel of the Xpression. When using only one input (mono), this jack should be used. LEFT CHANNEL INPUT jack This standard " mono jack provides input to the left channel of the Xpression. When using only one input (mono), this jack should NOT be used. RIGHT CHANNEL OUTPUT jack This standard " mono jack provides an output for the right channel of the Xpression. When using the unit in a mono application either jack may be used LEFT CHANNEL OUTPUT jack This standard " mono jack provides an output for the left channel of the Xpression. When using the unit in a mono application either jack may be used. PHANTOM POWER jack This 2.5mm PIN jack offers the ability to power Rocktron MIDI foot controllers from a 7-pin MIDI cable which connects from the Rocktron MIDI foot controller to the MIDI IN jack on the rear panel of the Xpression. This eliminates the need to find an AC outlet near where the footpedal would be placed during a performance, or the need to run an extension cord out to the footswitch. Instead of inserting the AC adaptor into the "POWER" jack of the footswitch as you would normally, plug it into the "PHANTOM POWER" jack on the Xpression. This will power the Rocktron MIDI foot controller through pins 6 and 7 of the MIDI cable connecting the two units. The Rocktron RMM900 7-pin MIDI cable must be used in this operation and is available from your Rocktron dealer. MIDI IN jack This 7-pin DIN connector must be connected to the MIDI OUT jack of the transmitting MIDI device via a standard MIDI cable, or to the MIDI THRU jack of the preceding MIDI device (if the Xpression is within a chain of MIDI devices). Pins 6 and 7 of this connector carry phantom power to power a Rocktron MIDI foot controller (MIDI XChange, All Access and MIDI Mate) when a 7-pin MIDI cable is used.

Using the Xpression with a Phantom Powerable MIDI Footcontroller

6. Operating Format

The Xpression provides 128 stored sounds called presets. Any of the 128 presets can be called up at any time via the front panel PRESET control (used to both select and recall a preset). The root of each presets sound is its configuration. The Xpression provides two main effect configurationsthe Classic configuration and the Rotary configuration. Each configuration provides a different selection of available effects.
Classic configuration provides these effects:
HUSH Parametric EQ Flanger Chorus Reverb Compression Tremolo Speaker Simulator Delay Phaser Pitch Shift
Rotary configuration provides these effects:
HUSH Parametric EQ Rotary Speaker Reverb Compression Speaker Simulator Delay
Any of the effects provided within a particular configuration may be switched in or out for each preset. ***Note - in the Rotary configuration the hi pass filter section is not available. Thus the INSTRU select control will not appear when in the Rotary configuration.***

Block Diagrams

Classic Configuration Block Diagram
Rotary Configuration Block Diagram
Functions and Parameter Descriptions
Xpression Functions and Parameter Descriptions
Each Xpression preset is divided into individual blocks called functions (such as "Mixer", "Reverb", etc.). Within each function is a set of controls which allow you to manipulate various aspects of that function. These controls are called parameters. The setting of each of the parameters determines the overall sound of each Xpression preset. The Xpression user interface is set up to allow you to first access each function (via the FUNCTION SELECT control), then the list of available parameters for the selected function (via the PARAMETER SELECT control) and, finally, the adjustable value for each parameter (via the PARAMETER ADJUST control).

parameter adjust

parameter select

function select

compare

bypass

Step 3: Turn to alter the value of the selected parameter.
Step 2: Turn to select a parameter within the selected function.
Step 1: Turn to select a function.
The remainder of this section will discuss each of the effect-based functions and the associated adjustable parameters that they provide. Functions not discussed in this section are utility-based, and are described in Section 7, "Operating the Xpression" on page 39.

GLOBAL

Function
The first function displayed when turning the FUNCTION SELECT control is the Global function. The parameters provided in this function affect all presets (i.e. the settings stored for these parameters are the same for all presets).
The PARAMETER SELECT control will allow you to access each of the following Global parameters: The PARAMETER ADJUST control will allow you to adjust each of the GLOBAL parameters: The INSTR parameter allows you to select (with the PARAMETER ADJUST control) either GUITAR or BASS for that particular preset.

The PARAMETER SELECT control will allow you to access each of the following Hush parameters. The PARAMETER ADJUST control will allow you to make adjustments to the parameter selected:

HUSH I/O

The HUSH I/O parameter determines whether the HUSH circuit is active or bypassed for the current preset. Select IN and the HUSH is active. Select OUT and the HUSH is bypassed.

EXP THRESH

The EXPANDER THRESHOLD parameter determines the level at which downward expansion begins. For example, if the EXPANDER THRESHOLD was set at -27dB and the input signal dropped below -27dB, downward expansion would begin. The will be more noise reduction at higher settings. If you are using a very noisy, hi gain preamp higher settings like -27 will provide the most noise reduction.

COMPRESSOR

Compression is often used to maintain an even level when using clean tones, and is also used to increase sustain when using high gain distortion.
The PARAMETER SELECT control will allow you to access each of the following Compressor parameters. The PARAMETER ADJUST control will allow you to make adjustments to be made to the selected parameter:

COMPRESR I/O

The COMPRESSOR I/O parameter determines whether the compression circuit is active or bypassed for the current preset. Select IN if you want activate the compressor Select OUT if you want to bypass the compressor The COMPRESSOR THRESHOLD parameter determines the input level (in dB) at which compression will begin. Lower settings of this parameter will result in more compression.

COMP THRESH

COMP ATTACK
The COMPRESSOR ATTACK parameter determines the speed (in milliseconds) at which the compressor will reach its maximum compression level after the input signal has exceeded the threshold level (set by the COMPRESSOR THRESHOLD parameter). The COMPRESSOR RELEASE parameter determines the speed (in seconds) at which compression will cease after the input signal has dropped below the threshold level. ***NOTE - When using a Bass we suggest longer release times - up to 1 to 2 seconds. This will keep the dynamic range limited producing a more smooth consistent level output.****

COMP RELEASE

The EQ function provides full parametric control and allows you shape the tone of the input signal before it reaches each of the effect blocks.
The PARAMETER SELECT control will allow you to access each of the following EQ parameters:
EQ I/O Rocktrons SIMBiotic EQ is a custom designed EQ circuit providing the ULTIMATE tool for tonal shaping of your sound. It includes four bands of full parametric EQ and complete mixing capabilities!

DLY TIME1

FINE 1

DLY RGN 1

DELAY OUT 2 DLY PAN2

DLY TIME2

FINE 2

DLY RGN 2

D>SPILLOVER

REVERB

Reverb is a multitude of echos spaced so close together that, to the human ear, seem as a single continuous sound. These echos gradually decrease in intensity until they are ultimately absorbed by the boundaries and obstacles within a room. As the sound waves from the sound source strike the boundaries of a room, a portion of the energy is reflected away from the obstacle while another portion is absorbed into it - thereby causing both the continuance of sound as well as the decaying or dying out of the sound.
The PARAMETER SELECT control will allow you to access each of the following Reverb parameters. The PARAMETER ADJUST control allows you to adjust the selected parameter:
Note! REV INPUT When reverb from the current preset is spilled over into the next preset recalled (SPILLOVER "ON"), the reverb parameters for the new preset will be changed to match those of the previous preset (except for the REV INPUT and SPILLOVER parameters) - even if the Reverb effect itself is switched "OUT" in the previous preset. The EFFECT LEVEL parameter in the next preset recalled does not change, therefore reverb spilled into it may be of higher or lower volume depending on the EFFECT LEVEL setting in each preset. Also, recalling the same preset twice via MIDI will cancel the Spillover effect and reset the new preset to its stored parameter values (only when the SPILLOVER parameter in the recalled parameter is set "OFF"). The REV INPUT parameter determines whether the reverb circuit is active or bypassed for the current preset. The R-MIX EFFECT/DELAY parameter is used to define the ratio of direct signal to delayed signal to be input to the reverb section. The REVERB LEVEL parameter allows you to control the level of the reverb signal at the output of the Xpression relative to the direct signal and other effect signals. The REVERB DECAY parameter determines the length of time that the reverb signal will sound before it has completely died out. The REVERB HIGH FREQUENCY DAMPING parameter is used to control the decay rate of high frequency information in the reverb signal. Higher parameter settings will result in a faster decay of high frequency information. The R>SPILLOVER parameter determines whether reverbs generated in the current preset will continue decaying when the next preset is recalled.When switched off, reverbs will be abrubtly cut off when the next preset is recalled.

PSR PAN

PSR DEPTH

P>RESONANCE

PSR STAGES

PHASER LVL

FLANGER
Flanging splits the input signal into two individual delayed signals (Voice 1 and Voice 2), then modulating the delayed signals so that, when summed back with the direct signal, phase cancellations will occur at some frequencies while peaks in the response will occur at others.
The PARAMETER SELECT control will allow you to access these FLANGER parameters. The PARAMETER ADJUST control allows you adjust the selected parameter: The FLANGER I/O parameter determines whether the flange circuit is active or bypassed for the current preset. Select IN to engage the flanger circuit. Select OUT to bypass the circuit. The FLANGER OUTPUT 1 parameter determines the overall volume of Voice 1. The FLANGER PAN 1 parameter allows you to pan Voice 1 to the left or right channel. The FLANGER DEPTH 1 parameter adjusts the amount of modulation of Voice 1. Lower DEPTH settings produce more subtle effects, while higher settings will result in a more drastic effect. The FLANGER RATE 1 parameter determines the speed at which Voice 1 is modulated. The TIME1 parameter determines the multiplier by which a new modulation rate will be selected for the RATE 1 parameter when the Tap Delay feature of the Xpression is used. (See Section 7 page 50: "Tap Delay" for more information on the Tap Delay feature.) The FLANGER OUTPUT 2 parameter determines the overall volume of Voice 2. The FLANGER PAN 2 parameter allows you to pan Voice 2 to the left or right channel. The FLANGER DEPTH 2 parameter adjusts the amount of modulation of Voice 2. Lower DEPTH settings produce more subtle effects, while higher settings will result in a more drastic effect. The FLANGER RATE 2 parameter determines the speed at which Voice 2 is modulated. The TIME2 parameter determines the multiplier by which a new modulation rate will be selected for the RATE 2 parameter when the Tap Delay feature of the Xpression is used. (See Section 7 page 50: "Tap Delay" for more information on the Tap Delay feature.) The FLANGER REGENERATION parameter determines how much of the the delayed output signal is fed back into the input. More regeneration produces a more pronounced "jet airplane" type of effect.

FLANGER I/O

FLN OUT 1

FLN PAN1

FLN DPTH 1

FLN RATE 1

FLN OUT 2

FLN PAN2

FLN DPTH 2

FLN RATE 2

FLN REGEN

CHORUS

The Chorus effect in the Xpression is produced by detuning two delayed signals (Voice 1 and Voice 2), then modulating the detune effect so that the amount of pitch detune is constantly varying. Using different detune amounts, modulation rates, modulation depths and pan settings for each delayed signal will produce a greater perceived spaciousness.

The PARAMETER SELECT control will allow you to access each of the following Chorus parameters The PARAMETER ADJUST control allows you adjust the selected parameter:

CHORUS I/O

The CHORUS I/O parameter determines whether the chorus circuit is active or bypassed for the current preset. Select IN to engage the chorus circuit. Select OUT to bypass the chorus circuit. The CHORUS OUTPUT 1 parameter determines the volume of Voice 1. This parameter allows you to pan Voice 1 to the left or right channel. The CHORUS DEPTH 1 parameter adjusts the amount of modulation of the Voice 1 signal. A lower depth setting will produce a more subtle detune effect, while a higher setting results in a more extreme detuning of Voice 1. The CHORUS RATE 1 parameter determines the sweep speed (or the speed at which Voice 1 is modulated). This parameter allows you to select the minimum delay time (in milliseconds) for Voice 1. This delayed signal (along with Voice 2) is detuned and modulated to produce the chorus effect. Using shorter delay times will result in a tighter sounding chorused signal, while longer delay times will produce a larger ambient effect. The TIME 1 parameter determines the multiplier by which a new modulation rate will be selected for the RATE 1 parameter when the Tap Delay feature of the Xpression is used. (See Section 7 page 50: "Tap Delay" for more information on the Tap Delay feature.) The CHORUS OUTPUT 2 parameter determines the volume of Voice 2. This parameter allows you to pan Voice 2 to the left or right channel. The CHORUS DEPTH 2 parameter adjusts the amount of modulation of the Voice 2 signal. A lower depth setting will produce a more subtle detune effect, while a higher setting will produce a more extreme detuning of Voice 2. The CHORUS RATE 2 parameter determines the sweep speed (or the speed at which Voice 2 is modulated). This parameter allows you to select the minimum delay time (in milliseconds) for Voice 2. This delayed signal (along with Voice 1) is detuned and modulated to produce the chorus effect. Using shorter delay times will result in a tighter sounding chorused signal, while longer delay times will produce a larger ambient effect. The TIME 2 parameter determines the multiplier by which a new modulation rate will be selected for the RATE 2 parameter when the Tap Delay feature of the Xpression is used. (See Section 7 page 50: "Tap Delay" for more information on the Tap Delay feature.)

Step 11

Turn the PARAMETER SELECT control one step clockwise to access the Lower Limit parameter (for PA-A).

LLIM A

Step 12
Use the PARAMETER ADJUST control to select the lowest value which the parameter is not to fall below through MIDI control changes.

Step 13

After selecting a value for the lower limit, press the STORE button to save it. "STORED" will flash briefly on the display.
Selecting a lower limit value that is greater than the upper limit value will invert the response of the controller - i.e. the toe position of the expression controller will provide the minimum value, while the heel position will provide the maximum value.
Steps 1-13 can be repeated nine times for a total of 10 controllers. To exit Controller Assign at any time, turn either the PRESET or FUNCTION SELECT control. Only those changes that have been stored will be saved after exiting the Controller Assign function.
Copying Xpression Presets, Titles and Controller Assignments
The Copy function allows you to copy any preset, preset title or controller assignment into any other preset location instantly.

Copying presets:

Turn the FUNCTION SELECT control to "COPY".

**** COPY ****

Turn the PARAMETER SELECT control one step clockwise to access the "PR> XX to >PR XX" parameter, as shown below. The number on the left represents the preset to be copied, while the number on the right represents the preset location to copy to.

PR>

>PR

Preset to copy

Preset location to copy to
Use the PRESET control to select the desired preset to be copied.
Use the PARAMETER ADJUST control to select the location to copy the selected preset into.
Press the STORE button to copy the selected preset into the selected preset location. "STORED" will flash briefly on the display.
After flashing "STORED", the Xpression will display "COPY TITLE TOO?". This allows you to copy the title from the copied preset into the new location as well. To copy the title, press the STORE button a second time. "STORED" will flash briefly before the Xpression displays the new preset number and title.
Turning the PARAMETER ADJUST control instead of pressing the STORE button allows you copy the title from the preset being copied to any other location. Once a location has been selected, press the STORE button to copy the title. If you do not wish to copy the preset title, turn the PARAMETER SELECT or FUNCTION SELECT control to exit the preset copy function. The preset has been copied to the new location, but its title will be the title which was already at the new location.

MIDI Channels

The Xpression can receive MIDI commands from other MIDI transmitting devices, as well as transmit MIDI program changes to other MIDI-based equipment when a preset is recalled on the Xpression. The MIDI Channels function allows you to select the MIDI channels that the Xpression will receive and transmit MIDI information on.
Turn the FUNCTION SELECT control clockwise until the Xpression displays "MIDI CHANNELS".

MIDI CHANNELS

Turn the PARAMETER SELECT control one step clockwise to display the current MIDI Receive channel.

RECEV CHANL

Turn the PARAMETER ADJUST control to select the desired MIDI channel. You may select channels 1-16, OMNI (all channels) or OFF (will not receive MIDI commands).
Press the STORE button to save the new MIDI Receive channel. "STORED" will flash briefly on the display.

MIDI Dump/Load

Any or all of the Xpression presets may be dumped to a sequencer or another Xpression via system exclusive messages. The information exchanged when performing a MIDI Dump consists of parameter values, title characters and controller assignment information. When dumping a single preset into another Xpression, the dumped preset may be loaded into any preset location on the receiving Xpression.
To dump a single Xpression preset into another Xpression
Connect a standard MIDI cable from the MIDI OUT of the transmitting Xpression to the MIDI IN on the receiving Xpression. Do not allow a looping connection from the MIDI OUT/THRU of the receiving Xpression back to the MIDI IN of the transmitting Xpression.

IMPORTANT:

Turn the FUNCTION SELECT controls on both the transmitting and receiving Xpressions until "MIDI DUMP/LOAD" is displayed on each.

MIDI DUMP/LOAD

TRANSMITTING Xpression

RECEIVING Xpression

Turn the PARAMETER SELECT control on each unit one step clockwise to "PR DUMP/ LOAD".

1 PR DUMP/LOAD

Turn the PRESET control on the transmitting Xpression to the preset that is to be dumped into the receiving Xpression. As the PRESET control is turned, the preset number will be displayed in the first three characters of the display.

PR DUMP/LOAD

TRANSMITTING XPRESSION
Use the PRESET control on the receiving Xpression to select the preset location to store the received preset. (The preset currently stored at the selected location will be lost when the new preset is received, therefore caution should be used when selecting a preset location.)

122 PR DUMP/LOAD

RECEIVING XPRESSION
To initiate the dump, press the STORE button on the transmitting Xpression. The transmitting Xpression will display the preset number being dumped and "DUMPED". The receiving Xpression will display the preset location being stored to and "RECEIVING." while it receives and stores the preset parameters and title.

32 DUMPED

122 RECEIVING.
After all the information for the dumped preset is stored, the receiving Xpression will display "LOADED". The receiving Xpression also recalls the loaded preset at this time so that it may be verified.

122 LOADED

Note: If there is an error in transmission, the unit will display "RECEIVE ERROR". Should this occur, check connections and try again. If other errors occur, check the Error Messages chart in the Appendix.
To dump a single Xpression preset into a sequencer
Note: When performing data dumps to and from the Xpression, always perform the dump in real time sequence mode. This will ensure that data loaded back into the Xpression is not sent faster than the Xpression can receive it. Also, make sure that the sequencer's MIDI filter is set to accept SYSX information.
Connect a standard MIDI cable from the MIDI OUT of the transmitting Xpression to the MIDI IN on the receiving sequencer.
Turn the FUNCTION SELECT controls on the transmitting Xpression until "MIDI DUMP/ LOAD" is displayed.
Turn the PARAMETER SELECT control on the transmitting Xpression until "BULK DUMP/ LOAD" is displayed.

BULK DUMP/LOAD

Start the sequencer recording.

RECORD

Press the STORE button on the Xpression to initiate the data dump. As the Xpression performs the dump, it will display "XXX DUMPED" - where "XXX" = the number of the data string currently transmitting (i.e. strings 1-254 are presets, titles, controller information and 2tap delay information; string 255 contains program mapping information; and string 256 contains miscellaneous information. Contact Rocktron for information on how to receive a detailed MIDI spec).

XXX DUMPED

After the Xpression displays "TRANS COMPLETE", stop the sequencer. The sequencer should have recorded all of the data that was dumped from the Xpression. Keep this data stored on a disk in a safe place. Turn the PARAMETER SELECT control to continue.
To reload user data from a sequencer
Connect a standard MIDI cable from the MIDI OUT of the transmitting sequencer to the MIDI IN on the receiving Xpression. Do not allow a looping connection from the MIDI OUT/THRU of the receiving Xpression back to the MIDI IN of the transmitting sequencer.

Turn the FUNCTION SELECT controls on both the receiving Xpression until "MIDI DUMP/ LOAD" is displayed.
Turn the PARAMETER SELECT controls on the receiving Xpression until "BULK DUMP/ LOAD" is displayed.
Play back the data stored on the sequencer. The Xpression will display the data strings as it is storing them. Each data string will appear with the word "LOADED". After all the user data has been loaded, the Xpression will display "LOAD COMPLETE". Do not play back the data from the sequencer faster than it was loaded, as errors may occur (errors may also occur if any knob is turned or any button is pressed before the message "LOAD COMPLETE" appears).

LOAD COMPLETE

If errors occur during transmission, the unit will display "RECEIVE ERROR" for transmission errors and "XMEM ERROR" for internal hardware errors. Errors occurring in transmission does not indicate that all of the received data is corrupted. Only the transmission string where the error occurred is corrupted.
When receiving a Bulk Load, it is important that the data loaded to the Xpression is not transmitted faster than it was originally dumped from the Xpression. If information is sent too fast to the Xpression, an error will occur. When dumping information from a data storage device, such as an Alesis Data Disk, it is necessary to perform the dump in sequence mode rather than sysx mode. Sequence mode will dump the information back to the Xpression at the same rate as it was received from the Xpression. The Xpression can receive a data dump at about 65Hz (or about 1 byte every 15 milliseconds).

Factory Restore

The Factory Restore function allows you to restore altered Xpression presets to their original condition as shipped from the factory. Either the entire Xpression memory can be restored, a single preset can be restored to any preset location, or the controller information alone can be restored.
Restoring a single factory preset:
Turn the FUNCTION SELECT control clockwise to "FACTORY RESTORE".

FACTORY RESTORE

Turn the PARAMETER SELECT control one step clockwise to "RESTR 1 TO 1". The number on the left is the original factory preset number to be restored. The number on the right is the preset location that the preset will be stored into.

Factory preset to be restored
Preset location to store into
Turn the PRESET control to select the factory preset to be restored.
Turn the PARAMETER ADJUST control to select the preset location to store the restored preset into.
!! CAUTION !! Pressing the STORE button at this time will overwrite the current preset with the displayed factory preset.
Press the STORE button to begin restoring the selected preset into the selected location. After the process is completed, the display should read "ERRORS 0". This represents the number of bytes that the Xpression found did not initialize properly. Any number of errors other than "0" means that the Xpression may not have initialized properly and the process should be repeated.

ERRORS

The Xpression will remain in this condition until the FUNCTION SELECT control is turned to exit the Factory Restore function. The preset currently recalled will be the preset most recently restored into the current location.
Restoring the Xpression memory (all presets):

!! CAUTION !!

This procedure will permanently erase all user presets (1-128) and replace them with the original factory presets. If you have altered and stored presets which you do not want to erase, do not perform the following procedure.
Turn the PARAMETER SELECT control two steps clockwise to "ALL RESTORE 0".

ALL RESTORE

A specific code number must be entered to restore the Xpression memory. Use the PARAMETER ADJUST control to enter the number "243".

!! WARNING !!

Pressing the STORE button at this time will permanently erase all user presets and replace them with the original factory presets. If you have altered and stored presets which you do not want to erase, turn the FUNCTION SELECT control to exit this function. 62
Press the STORE button at this time to initiate the All Restore procedure and erase all current Xpression presets, replacing them with the original factory presets. The Xpression will display "INITIALIZING" as the Xpression memory is restored.

INITIALIZING

After the All Restore process is completed, the display should read "ERRORS 0". This is the number of bytes that the Xpression found that did not initialize properly. Any number of errors other than "0" means that the Xpression may not have initialized properly and the process should be repeated.
Restoring the Xpression controller assignments:
The controller assignments for the Xpression can also be reinitialized without affecting presets and other stored information. To reinitialize only the controller assignments, enter a code number of "244" at Step 3 on the preceding page (instead of the "243" shown).

Selecting a Power On Preset The Xpression allows you to store a Power On preset which will always be recalled when the unit is turned on.
Turn the PRESET control to the preset number you wish to be recalled each time the unit is turned on.

PRESET TITLE

Press the STORE button while viewing the preset number and title to save it as the Power On preset.

PWR ON PR STORED

Selecting a Configuration The Xpression allows you to select which configurationClassic or Rotaryis active for the current preset.
Turn the FUNCTION SELECT control fully clockwise to "CONFIG SELECT".

CONFIG SELECT

Turn the PARAMETER SELECT control to access the "XXXXXXX SELECTED" parameter.

CLASSIC SELECTED

Turn the PARAMETER ADJUST control to select the desired configuration.

ROTARY SELECTED

Press the STORE button to save the selected configuration. "STORED" will flash briefly on the Xpression display.

Error Messages

8. Appendix

ERROR MESSAGES

Message

MEMORY ERROR

Possible Reason
CODE BYTE IS NOT CORRECT IN EEPROM MEMORY.

Corrective Action

MAKE SURE EEPROM IS TIGHT IN SOCKET. MAKE SURE WITHIN CORRECT OPERATING TEMPERATURE.

DUMP ERROR

MIDI INFORMATION IS BEING RECEIVED AT THE MIDI IN AT THE SAME INFORMATION IS BEING DUMPED.
DISCONNECT MIDI CORD AT MIDI IN OF TRANSMlTTING XPRESSION.

RECEIVE ERROR

MIDI SYSTEM EXCLUSIVE INFORMATION WAS NOT RECEIVED CORRECTLY.
BULK LOAD WAS TRANSMITTED TOO FAST. CHECK SUM BYTE WAS NOT CORRECT. DATA STRINGS NOT CORRECT LENGTH. DATA STRINGS OUT OF ORDER.

XMEM ERROR

EEPROM MEMORY IS NOT BEING STORED TO CORRECTLY.
MAKE SURE EEPROM IS TIGHT IN THE SOCKET. MAKE SURE WITHIN THE CORRECT OPERATING TEMPERATURE.

LOAD ERRORS

MIDI SYSTEM EXCLUSIVE INFORMATION WAS NOT RECEIVED CORRECTLY OR STORED CORRECTLY.
CHECK RECEIVE ERROR AND XMEM ERROR.

MIDI Implementation

MIDI IMPLEMENTATION

Xpression

Your MIDI XChange pedal has been tested and complies with the following Standards and Directives as set forth by the European Union:
Council Directive(s): Standard(s):

89/336/EEC

Electromagnetic Compatibility

EN55013, EN50082-1

This means that this product has been designed to meet stringent guidelines on how much RF energy it can emit, and that it should be immune from other sources of interference when properly used. Improper use of this equipment could result in increased RF emissions, which may or may not interfere with other electronic products. To insure against this possibility, always use good shielded cables for all audio input and output connections. This will help insure compliance with the Directive(s). For more information about other Rocktron products, please see your local dealer or one of our importers closest to you (listed on the Rocktron website - www.rocktron.com).

Precautions

Read all instructions contained in this manual. Keep these instructions Heed all warnings Follow all instructions. Do not use this apparatus near water. Clean with dry cloth
Copyright 2003 GHS Corporation All Rights Reserved.

Precautions Continued.

Do not block any ventilation openings (if applicable). Install in accordance with the manufacturers instructions. Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including amplifiers) that produce heat. This product is not equipped with a plug or cable. This pedal runs on a 9 Volt Battery, if a 9Volt DC adapter is the used please follow adapter manufacturers operation instructions. Only used attachments/accessories specified by the manufacturer. Do not use this product with any case, stand tripod, bracket or table that is not specified by the manufacturer. Insure that the case, stand, tripod, bracket etc. is properly adjusted and setup (follow all instructions). Extra care and caution should be taken to avoid tip over and injury. Unplug this apparatus during lightening storms or when unused during long periods of time. Refer all service to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply or plug is damaged, liquid has been spilled or objects have fallen into the apparatus or if the apparatus has been exposed to rain or moisture, does not operate normally or has been dropped. DO NOT ATTEMPT TO SERVICE THIS EQUIPMENT. QUALIFIED PERSONNEL SHOULD SERVICE THIS EQUIPMENT ONLY. DO NOT MAKE ANY INTERNAL ADJUSTMENTS OR ADDITIONS TO THIS EQUIPMENT AT ANY TIME OR TAMPER WITH INTERNAL ELECTRONIC COMPONENTS AT ANY TIME. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY VOID THE WARRANTY OF THIS EQUIPMENT AS WELL AS CAUSING A SHOCK HAZARD. OPERATING TEMPERATURE Do not expose this unit to excessive heat. This unit is designed to operate between 32 F and 104 F (0 C and 40 C). This unit may not function properly under extreme temperatures.

Introduction

Congratulations on your purchase of the Rocktron MIDI XChange. The MIDI XChange is a simple to use, yet multifunctional MIDI switcher that not only runs MIDI switchable Rocktron product, but other MIDI switchable products as well. Two built-in expression pedal ports allow you plug in up to two Rocktron HEX expression/volume controllers for continuous controlling of all sorts of parameters. A fantastic feature of the MIDI XChange is that it runs on a 9-volt battery as well as external power. Thus, if you are doing a gig where it is hard to run power out to your floor pedals - you wont have any problem with the MIDI XChange as battery operation will allow you to make the preset and controller changes you need. And, the MIDI XChange is also phantom powerable through select Rocktron processors and amplifiers (see connection sections for more details). Finally, the MIDI XChange is housed in a rugged roadworthy extruded aluminum chassis that will stand up to use and abuse. The easy access battery compartment will make changing batteries during a gig a breeze.

Basic Connection with an effect processor
Connection using a Rocktron Xpression and Phantom Power
Connection when using a rack system

from midi out/thru

to midi in of second effects processor

from midi out

to midi in
Connection using a Rocktron Xpression with a Bass amplifier
Connection using a Rocktron HEX Pedal and Xpression Processor
Connection using a Rocktron HEX pedal and a non-Rocktron effects processor

back panel of processor

Functions and Control Layout
Functions and Control Layout continued..
Controls and Function Descriptions
1 Display - This three segment display will show you the preset you are on or which MIDI Channel is currently assigned (see Setting MIDI Channel section for more details). POWER Switch - Pressing this button will turn on the MIDI XChange. Pressing the button again will turn off the MIDI XChange. Upon turning the unit on the display (see point 1) will begin to flash the number 1. At this point you may either press the RECALL switch to select preset 1 or use the UP and DOWN buttons to select the desired preset number. Press the RECALL button to choose the selected preset. CC17 Jack (CONTINUOUS CONTROLLER 17 Jack) This jack will allow you to plug in a Rocktron HEX Volume/ Expression pedal to control various parameters via MIDI (see HOW TO USE THE CC17 AND CC7 PORTS for details on how to operate this simple to use function). CC7 Jack (CONTINUOUS CONTROLLER 7 Jack) This jack will allow you to plug in a Rocktron HEX Volume/ Expression pedal to control various parameters via MIDI (see HOW TO USE THE CC17 AND CC7 PORTS for details on how to operate this simple to use function).
MIDI OUT Jack - This Jack is used to connect to various MIDI devices. Using a standard 5-Pin MIDI Cable or the Rocktron RMM900 7-Pin MIDI Cable connect from this jack to the MIDI IN on the receiving MIDI device. (See the CONNECTIONS sections for details on how to connect up to various MIDI devices). Note - this is a 7-Pin jack, but a standard 5 pin MIDI cable may be used. However, you may use the Rocktron RMM900 7-Pin to 7-Pin MIDI Cable to receive phantom power from select Rocktron units that will provide power to the MIDI XChange.
DOWN Switch - This switch will allow you to scroll down to the desired preset. You may scroll down in two ways: 1) By depressing the switch and releasing it after the click will allow you to scroll down one preset at a time. 2) By depressing the switch and holding it down the preset numbers will automatically start scrolling down. After 4 decrements the decrement speed will increase allowing for faster preset navigating.

RECALL Switch - this switch allows you to select the desired preset. Once you have used the UP switch (see point 8) or DOWN switch (see point 6) and scrolled to the desired preset that preset number will be flashing in the display along with the blue LED. Depressing the RECALL switch once and releasing it after the click will select the preset and the number in the display will stop flashing.
UP Switch - This switch will allow you to scroll up to the desired preset. You may scroll up in two ways: 1) By depressing the switch and releasing it after the click will allow you to scroll one preset at a time. 2) By depressing the switch and holding it down the preset numbers will automatically start scrolling up. After 4 increments the increment speed will increase allowing for faster preset navigating.
9-VOLT ADAPTER INPUT - this 5.5/2.55mm coax plug will take a optional 9V DC adapter (not included) or 9VAC adapter [Rocktron part number 006-1101 (110V) or 006-1102 (220V) - not included] to provide power to the unit. The adapter power rating should be 100mA. Please follow all instructions that appear on the bottom of the unit. Please note - do not use this plug and phantom power at the same time - this may damage the unit. 9-VOLT BATTERY COMPARTMENT - to access pull on small tab labeled OPEN. Replace with a new 9-Volt battery.
MIDI Xchange Operation - Power Sources
The MIDI XChange is unique in respect that you may use most any type of power. 9-VOLT BATTERY The MIDI XChange is supplied with a 9Volt Battery - please see 9-VOLT BATTERY COMPARTMENT section on how to change the battery. Before operation you will need to open the battery compartment and plug in the 9-Volt battery packaged in the compartment. Expected battery life is 12 hours under constant operation. EXTERNAL ADAPTER - *Not Included The MIDI XChange can also run off the following adapters:
1) 9VDC 100ma adapter (5.5/2.55mm Coax Plug - Outer ring positive (+) and Inner ring negative (-)* 2) 9VAC 1.5A Rocktron Adapter [Part number 006-1101 (110V)]* 3) 9VAC 1.5A Rocktron Adapter [Part number 006-1102 (220V)]*
PHANTOM POWER The MIDI XChange can also run off Phantom power through selected Rocktron products and the use of the Rocktron RMM900 7-Pin to 7-Pin MIDI Cable (sold seperately). This operation requires you to use a 9VAC 1.5A Adapter 5.5/2.55mm Coax Plug (not included) plugged into the back of select Rocktron products (see connection diagrams for more detail). Power is then supplied to the MIDI XChange through pins 6 and 7 of the RMM900 MIDI Cord. This is a great set up to minimize adapters and cables out in front of you on stage.
POWER ON SEQUENCE SELECTING AND RECALLING PRESETS When power is applied using the Power switch (see point 2), the MIDI XChanges display a blue LED will begin to flash. The number that appears in the display will look like this:

Now you are ready to select a preset. To select preset number 1 at this point - depress the RECALL switch (see point number 7 for details on the RECALL switch) - the display and the blue LED will stop flashing. This indicates that preset number 1 is selected as shown below:
UP, DOWN and RECALL Switches These switches will allow you to change presets or MIDI channels. The range is 1-128 for the presets and 1-16 for the MIDI Channels. For details on changing the MIDI channel see section titled SETTING MIDI CHANNEL for more details on this function. UP Switch - Depressing and releasing this switch once will increase the preset number by one. Depressing and holding the switch down will engage the automatic increment feature of the MIDI XChange. The MIDI XChange will now begin scrolling up through the preset numbers. After 4 increments the increment speed will increase allowing faster preset navigation. DOWN Switch - Depressing and releasing this switch once will decrease the preset number by one. Depressing and holding the switch down will engage the automatic decrement feature of the MIDI XChange. The MIDI XChange will now begin scrolling down through the preset numbers. After 4 decrements the decrement speed will increase allowing faster preset navigation. RECALL Switch - This switch is used to select the preset or MIDI Channel. This switch is also used to toggle between the last two presets selected. Once you have used the UP or DOWN switches to reach your desired preset you must then depress and release the RECALL switch to select the preset. In this example we have scrolled up from preset 1 to preset 35 (which is now flashing - see diagram following page):
Now preset number 1 is still selected. To select preset 35 depress and release the RECALL switch. The display will now show the number 35:
At this point - if you step on the RECALL switch again the MIDI XChange will toggle back to the last preset - in this case preset number 1. This function allows you to switch back and forth between the last two presets selected - in this case preset 1:

SMART CONTROLLER PORTS

What are SMART CONTROLLERS Typically with most MIDI footcontrollers, when using continuous controller pedal(s) the status of the pedal(s) are not reported when a new program change command has been sent. This would most likely cause a discontinuity in volume requiring the user to step on his volume pedal to correct the change thus updating the pedal status manually. The MIDI XChange issues current status of both controller pedal ports upon the recall program change command being sent out. Also auto enable of these controller messages are detected when any of the two ports have a pedal attached to them. Everthing is handled by the MIDI XChange for ease of use. An example of this would be - when you had reduce the volume of preset 1 with an expression pedal - when switching to preset 2, unlike other MIDI controllers, the MIDI XChange will automatically detect the position of the pedal and apply that to the volume of preset 2 - thus no loud or abrupt volume changes. This is ideal in a live situation. The MIDI XChange has two SMART CONTROLLER PORTS labeled CC17 (see point 3) and CC7 (see point 4). CC stands for CONTINUOUS CONTROLLER.

HOW TO USE THE CC17 and CC7 PORTS: Connections - when using the Rocktron HEX Volume/Expression pedal use a stereo to stereo 1/4 jack cable (not included). When using a pedal other than the HEX you wil need two mono 1/4 male jacks to a RTS1/4 stereo male Y-Cord - there are several different kinds of expression pedal cables a few are shown below:
CC17 Port - This controller port is the default volume controller for all Rocktron products. Thus, all you need to do to control the volume of each preset is plug an expression pedal into this port and it will control the volume on all Rocktron products. CC7 Port - This controller port is the default volume controller for most non-Rocktron products. NOTE: The use of these controllers numbers are not exclusive. By programing the receiving units (Rocktron processors or other nonRocktron processors) controller assignments you could assign controller 17 or 7 to control various different parameters. For example you can assign either controller to control the PITCH parameter in a PITCH SHIFTER to create a whammy effect. SETTING MIDI CHANNEL MIDI Channel selection allows you to select the channel that the MIDI XChange transmits MIDI information on. In most normal operating modes you will want to have selected MIDI channel 1. In this case your receiving MIDI device would have to be set to Receive Channel 1 or OMNI To change the MIDI Channel follow these instructions: 1) Turn MIDI XChange On
2) Press and hold the DOWN switch 3) While holding down the DOWN switch press the UP Switch and release both. The display of the MIDI XChange should be flashing C01 and the blue LED will be flashing as shown in the diagram below.
Using the UP and DOWN switches you may now select the MIDI Channel you would like to use. For example, you would like to select MIDI channel 12. Using the UP button scroll up to C12. The display and the LED will continue to flash as shown below:
To select the MIDI Channel depress and release the RECALL switch once. The display will immediately go back to the selecting and recalling preset mode and a flashing number 1 will appear in the window as shown below:
At this point you may either press the RECALL switch to select preset number 1 or use the UP or DOWN switches to scroll to the desired preset.

MIDI CHANNEL CONFIRMATION If you want to confirm this simply turn off the MIDI XChange and wait 10 seconds then turn it back on a again. The display will indicate the current MIDI Channel.
MIDI MESSAGE MIDI CHANNEL = 1- 16 [0H-FH] PROGRAM CHANGE MESSAGE: [PC COMMAND || MIDI CHANNEL] = 0C0H [VALUE] = 1-128 [000H-07FH] COMPLETE MESSAGE = 0C0 07F CONTINUOUS CONTROLLER MESSAGE [CC COMMAND || MIDI CHANNEL] = 0B0H [CC NUMBER] = 7 or 17 [007H or 011H] [EOX] = 0F7H COMPLETE MESSAGE = 0B0F7

Other Rocktron Products

Rack Gear:
Gainiac (preamp w/12ax7 tube) Chameleon 2000 (preamp w/multi-effects) RepliTone MP(modelling preamp w/multi-effects) Xpression (multi-effects processor) Blue Thunder (bass preamp w/multi-effects) Voodu Valve (preamp w/12ax7 tube and multi-effects) Prophesy (our top of the line preamp with multi-effects) HUSH Super C (guitar noise silencing system) Vendetta VP4 Preamp (All Tube 4-Channel Guitar preamp - 2 Rack Space) Velocity 100 (2x50W Stereo Power Amp for Guitar)

Stomp Boxes:

Rampage Distortion, Tsunami Chorus, Austin Gold Overdrive, Vertigo Vibe Rotating Vibe Pedal, HUSH The Pedal, Sonic Glory Overdrive, Short Timer Digital Delay, Big Crush Compressor, Deep Blue Chorus Silver Dragon Tube Distortion Pedal, Metal Planet Distortion Banshee Talk Box Black Cat Moan Wah Wah

Foot Controllers:

MIDI Mate (Midi Foot Controller) All Access (Midi Foot Controller ) RMM900(7-pin Din MIDI Cable) HEX (Expression Pedal)
RM4 (MIDI Controller for Vendetta amps)
RFS1 and RFS2 (Single and Double Latching Footswitches for Rampage Amps)
Electric Guitar - Acoustic Guitar and Bass Amplifiers:
Vendetta Head(100 W Head 4-Channels All Tube - MIDI Switchable) Vendetta Combo (100W 2x12 Combo Celestion 90s all Tube4-Channel MIDI Switchable) R80DSP (80W 1x12 Amp w/Digital Effects) RT80 (80W 1x12 Amp w/Reverb & Built-in Tuner) R120DSP (120W 2x10 Amp w/Digital Effects) RT122C (120W 2x12 Amp w/Stereo Chorus, Reverb & Chromatic Tuner) R50DSP (50 Watt 2x8"Guitar Amp w/Digital Effects) R50C (50 Watt 2x8"Guitar Amp w/Reverb & Chorus) R20 (20 Watt 1x8"Amp w/Reverb) R10 (10 Watt 1x6.5")
ACOUSTIC (60 Watt Acoustic Amp with Chorus & Reverb) RA50DSP (50W Acoustic Amp w/Digital Effects - Wedge Shape) RA30DSP (30W Acoustic Amp w/Digital Effects - Wedge Shape) RB20 (Bass Amp 20W with 8" Speaker) RB30 (Basss Amp 30W with 10" Speaker)
RB60 (Bass Amp 60W with 12" Speaker) RB100 (Basss Amp 100W with 15" Speaker)
Rocktron - A Division of GHS Corporation 2813 Wilber Ave Battle Creek MI 49015 USA Rocktron Phone: 1-(269)-968-3351 Email: info@rocktron.com

www.rocktron.com

2003-0001 Rev. 02/01/03