Your Xpression™ has been tested and complies with the following Standards and Directives as set forth by the European Union: Low Voltage Directive(s): Council Directive(s): Standard(s): Safety: 72/23/EEC 89/336/EEC (93/68/EEC) Electromagnetic Compatibility EN55013, EN50082-1, EN55020 IEC 60065 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.
Contents 1. Introduction ................................................................................................................................ 1 2. Quick Setup ................................................................................................................................. 3 3. Front Panel .................................................................................................................................. 4 4. Rear Panel ...............................................
1. Introduction Congratulations on your purchase of the Rocktron Xpression™ guitar and bass effects processor! The Xpression is an easy to use, yet professional, multi-effects processor where 100% of the processing power is dedicated to producing rich, lush effects and EQ for guitar and bass. The Xpression is designed to maximize EFFECTS to be used with your favorite preamp or amplifier, thus there are no distortion presets in the Xpression.
PRECAUTIONS NOTE: IT IS VERY IMPORTANT THAT YOU READ THIS SECTION TO PROVIDE YEARS OF TROUBLE FREE USE. THIS UNIT REQUIRES CAREFUL HANDLING. All warnings on this equipment and in the operating instructions should be adhered to and all operating instructions should be followed. Do not use this equipment near water. Care should be taken so that objects do not fall and liquids are not spilled into the unit through any openings.
2. Quick Setup SELECTING A PRESET STEP 1 Turn the PRESET control to select the desired preset. The new preset will be recalled automatically. CHANGING PRESET PARAMETERS STEP 2 Turn the FUNCTION SELECT control to the desired effect or utility function. STEP 3 Turn the PARAMETER SELECT control to the parameter you wish to alter under the selected effect or utility function. STEP 4 Use the PARAMETER ADJUST control to select the new parameter value.
3. Front Panel 1 POWER switch 2 PRESET control This control scrolls through and instantly recalls the successive presets. 3 TAP (DELAY/RATE) button This button is used to select a new delay time or modulation rate based on the length of time occurring between two taps. See Section 7 (page 50): "Tap Delay" for more information. 4 DISPLAY panel The DISPLAY panel provides 16 characters consisting of 14 segments each.
Front Panel Desccription 9 FUNCTION SELECT control This control allows access to each function of the Xpression™. These functions include: Global Reverb Tremolo Phaser Speaker Sim Delay Pitch Shift Rotary Speaker Copy Program Changes Chorus Title Edit Controller Assig Remote Control Config Select MIDI Channels MIDI Dump/Load Factory Restore EQ Mixer HUSH Compressor Flanger 10 BYPASS button/led When lit, the effects are bypassed and only the input signal is passed to the Xpression™ outputs.
4. Rear Panel 1 RIGHT CHANNEL INPUT jack This standard ¼" mono jack provides input to the right channel of the Xpression. When using only one input (mono), this jack should be used. 2 LEFT CHANNEL INPUT jack This standard ¼" mono jack provides input to the left channel of the Xpression. When using only one input (mono), this jack should NOT be used. 3 RIGHT CHANNEL OUTPUT jack This standard ¼" mono jack provides an output for the right channel of the Xpression.
Rear Panel Description 7 MIDI THRU/OUT jack This standard 5-pin DIN connector can be connected to the MIDI IN jack of another device via a standard MIDI cable. There are limitations to the number of devices that can be chained (or series connected) in this fashion. Note: 8 7 Inherently in MIDI there is a limit to the number of devices which can be chained together (connected in series).
5. Connections Using the Xpression™ within a guitar rack system Guitar to input from mono output Guitar Preamp to Xpression mono input back panel of xpression INPUTS R(MONO) OUTPUTS L R L CAUTION: DO NOT REMOVE COVER. SHOCK HAZARD NO USER SERVICEABLE PARTS INSIDE. RISQUE DE CHOC NE PAS OUVRIR. MIDI IN ROCKTRON BATTLE CREEK MI MODEL: XPRESSION SERIAL#: Made in China for Rocktron Designed in the USA HUSH iIS A REGISTERED TRADEMARK OF GHS Corp. MIDI THRU/OUT PHANTOM POWER POWER 9VAC/DC 9VAC/1.
Using the Xpression™ in a preamp effects loop 9
Using the Xpression with a Guitar Amplifier Head 10
Using the Xpression with a Guitar Combo Amplifier 11
Using the Xpression with a Bass Amplifier Head head Bass Head from bass head to bass cabinet bass Cabinet 12
Using the Xpression with a Bass Amplifier Combo 13
Using the Xpression with a MIDI Footcontroller 14
Using the Xpression with a Phantom Powerable MIDI Footcontroller 15
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 preset’s sound is its configuration. The Xpression provides two main effect configurations—the Classic configuration and the Rotary configuration. Each configuration provides a different selection of available effects.
Block Diagrams Classic Configuration Block Diagram 17
Block Diagrams Rotary Configuration Block Diagram 18
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.
Functions and Parameter Descriptions GLOBAL Function INSTR 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).
Functions and Parameter Descriptions MIXER Function The next function displayed when turning the FUNCTION SELECT control is the Mixer function. The Mixer function parameters are included in all presets—regardless of which effects are active for the current preset - although the parameter values stored in this function are only for the currently recalled preset. This digital mixer allows you to control the signal levels pertaining to each preset’s configuration and stores those levels for each preset.
Functions and Parameter Descriptions HUSH Function The HUSH® function is accessible in all presets—regardless of the configuration currently recalled. HUSH is Rocktron’s patented single-ended noise reduction system. The HUSH system contained in the Xpression is a fully digital implementation of HUSH achieved through Digital Signal Processing (DSP), and is modeled after the latest HUSH design. The low level expander of the HUSH system operates like an electronic volume control.
Functions and Parameter Descriptions COMPRESSOR Function 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.
Functions and Parameter Descriptions EQ Function 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: Rocktron’s SIMBiotic EQ is a custom designed EQ circuit providing the ULTIMATE tool for tonal shaping of your sound.
Functions and Parameter Descriptions DELAY Function Delay provides a reproduction of the input signal, occurring at a prescribed time (usually expressed in milliseconds) following the input signal. The Xpression provides two discrete delays (Delay 1 and Delay 2), each of which has its own set of parameters to determine its particular characteristics.
Functions and Parameter Descriptions SOURCE 2 This parameter is used to select whether the Source 2 input will be the VOICE 2 output from the previous effect in the signal chain or the direct signal. In configurations where there is no effect immediately preceding the delay, both Source 1 and Source 2 will be the direct signal. DLY HF DAMP The DELAY HIGH FREQUENCY DAMPING parameter controls the amount of high frequency content in the delayed and regenerated signals.
Functions and Parameter Descriptions REVERB Function 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.
Functions and Parameter Descriptions TREMOLO Function The Tremolo effect continuously varies the volume of the signal. The PARAMETER SELECT control will allow you to access each of the following Tremolo parameters: The PARAMETER ADJUST control allows you to adjust the selected parameter: TREMOLO I/O The TREMOLO I/O parameter determines whether the tremolo circuit is active or bypassed for the current preset. Select IN if you want to engage the tremolo. Select OUT if you want to bypass the Tremolo.
Functions and Parameter Descriptions PHASER Function Phase shifting involves splitting the input signal into two signals, then shifting the phase of different frequencies of one signal before mixing it back with the original signal. The PARAMETER SELECT control will allow you to access each of the following Phaser parameters.
Functions and Parameter Descriptions FLANGER Function 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.
Functions and Parameter Descriptions CHORUS Function 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.
Functions and Parameter Descriptions PITCH SHIFT Function Pitch Shifting is used to change the pitch of the input signal to produce a harmony note based on the input signal. The harmony voice may be of any fixed interval - up to one octave above the input signal to two octaves below - and is selected in 20-cent increments. Fine adjustment can be made in one cent (1/ 100th semitone) increments.
Functions and Parameter Descriptions PITCH SHIFT INTERVALS PARAMETER CORRESPONDING VALUE INTERVAL +1200 +1100 +1000 +900 +800 +700 +600 +500 +400 +300 +200 +100 0 -100 -200 -300 -400 -500 -600 -700 -800 -900 -1000 -1100 -1200 -1300 -1400 -1500 -1600 -1700 -1800 -1900 -2000 -2100 -2200 -2300 -2400 NOTE: 33 one octave Major 7th minor 7th Major 6th minor 6th perfect 5th diminished 5th perfect 4th Major 3rd minor 3rd Major 2nd minor 2nd Unison Major 7th minor 7th Major 6th minor 6th perfect 5th diminished 5t
Functions and Parameter Descriptions SPEAKER SIMULATOR Function The Speaker Simulator function provides a realistic approximation of a miked speaker cabinet for applications involving connecting the Xpression directly to a mixing console, recording system or other full range system.
Functions and Parameter Descriptions ROTARY SPEAKER Function *For added versatility when using continuous control, the SLOW SPEED and FAST SPEED parameters cover the same range (0 to 100). Therefore, it is possible to have a SLOW setting which is faster than the FAST setting. **Please note that when using the Rotary Speaker function has been selected, the hi-pass filter is no longer available.
Functions and Parameter Ranges Master Xpression Effects Parameter List (The actual functions displayed are configuration-dependent) Function Parameter Parameter Range (via FUNCTION SELECT control) (via PARAMETER SELECT control) (via PARAMETER ADJUST control) GLOBAL instr hp cut OUTPUT HUSH OFFSET MUTE DIRECT Guitar, Bass 80 Hz, 160 Hz, 240 Hz Stereo, Mono -10dB to +30dB Out, In Out, In MIXER LEFT DIR RIGHT DIR EFFECT LEVEL dry path PHS DIR/EFF CHR DIR/EFF FLN DIR/EFF REV DIR/EFF VOLUME -∞ to +6
Functions and Parameter Ranges 37 Function Parameter Range (via FUNCTION SELECT control) (via PARAMETER SELECT control) (via PARAMETER ADJUST control) delay DLY TIME1 FINE 1 DLY RGN 1 DELAY OUT 2 DLY PAN2 DLY TIME2 FINE 2 DLY RGN 2 D>SPILLOVER 0ms to 1000ms 0ms to 9ms -∞ to 0dB -∞ to 0dB Left<0 to 100>Right 0ms to 1000ms 0ms to 9ms -∞ to 0dB Off, On REVERB REV INPUT R-MIX EFF/DLY REVERB LVL REV DECAY REV HF DAMP R>SPILLOVER Muted, Active Effect<0 to 100>Delay -∞ to 0dB 0 to 99 0 to 99 Off, On
Functions and Parameter Ranges Function Parameter Range (via FUNCTION SELECT control) (via PARAMETER SELECT control) (via PARAMETER ADJUST control) CHORUS CHORUS I/O CRS OUT 1 CRS PAN 1 CRS DPTH 1 CRS RATE 1 CRS>DLY1 TIME1 CRS OUT 2 CRS PAN 2 CRS DPTH 2 CRS RATE 2 CRS>DLY2 TIME 2 Out, In -∞ to 0dB Left<0 to 100>Right 0 to 100 0 to 254 2ms to 40ms 32nd, 16th, 8th, Triplet, ¼, ½, or None -∞ to 0dB Left<0 to 100>Right 0 to 100 0 to 254 2ms to 40ms 32nd, 16th, 8th, Triplet, ¼, ½, or None PITCH SHIFT
7. Operating the Xpression™ Selecting a preset Step 1 Turn the PRESET control to the desired preset you wish to recall. The selected preset will be recalled automatically.
Operating the Xpression™ Changing preset parameters Step 1 Turn the FUNCTION SELECT control to select the function heading which contains the parameter(s) you wish to change. **** Step 2 REVERB Turn the PARAMETER SELECT control to the specific parameter you wish to change. REV DECAY Step 3 59 Turn the PARAMETER ADJUST control to alter the parameter value. The LED above the STORE button will light, indicating that the preset has had a parameter altered from its stored value.
Operating the Xpression™ Editing a preset title Step 1 To begin the Title Edit function, turn the FUNCTION SELECT control clockwise until the Xpression™ displays "TITLE EDIT". ** TITLE EDIT ** Step 2 Turn the PARAMETER SELECT control clockwise to initiate the Title Edit mode. Turning this control will also select the character location to be edited. A flashing decimal will follow the character currently selected. 57 P.
Operating the Xpression™ Step 5 After all the characters have been edited as needed, press the STORE button to save the new title memory. The Xpression™ will flash "STORED" briefly. STORED Note: The STORE button must be pressed to save the new title. Exiting the Title Edit function before pressing the STORE button will erase any editing that was done in Title Edit. Also, after flashing "STORED", the Xpression™ will remain in the Title Edit mode.
Operating the Xpression™ Controller Assignments The Controller Assignment function allows for specific Xpression™ adjustable parameters to be mapped (or assigned)* to a MIDI controller for real-time control by an expression pedal. The Controller Assignment option also lets you store an upper and lower parameter value limit which the controller cannot exceed.
Operating the Xpression™ Step 3 Use the PARAMETER ADJUST control to select the controller number to be assigned to the PA-A parameter. Any number from 0 to 120 may be selected, as well as OFF (will not respond to MIDI control changes). Match the number selected for this parameter with the controller number on the MIDI transmitter. CTR A Step 4 7 After selecting the desired controller number, press the STORE button to save the number for the "CTR A" parameter.
Operating the Xpression™ Note: Step 8 The Xpression™ allows you to select an upper and lower value limit which the parameter cannot exceed. For example, if a parameter has a value range from -∞ to 0dB, yet you would like the range of the parameter to vary from only -12dB to 2dB, you may set a lower limit of -12 and an upper limit of -2 via the Upper and Lower Limit parameters.
Operating the Xpression™ Step 12 Use the PARAMETER ADJUST control to select the lowest value which the parameter is not to fall below through MIDI control changes. LLIM A Step 13 -12 After selecting a value for the lower limit, press the STORE button to save it. "STORED" will flash briefly on the display. STORED Selecting a lower limit value that is greater than the upper limit value will invert the response of the controller - i.e.
Operating the Xpression™ 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: Step 1 Turn the FUNCTION SELECT control to "COPY". **** COPY **** Step 2 Turn the PARAMETER SELECT control one step clockwise to access the "PR> XX to >PR XX" parameter, as shown below.
Operating the Xpression™ Step 6 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. STORED 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.
Operating the Xpression™ Step 5 Press the STORE button to copy the selected title into the selected preset location. "STORED" will flash briefly before displaying the preset title at its new location. STORED Copying controller assignments: Step 1 Turn the FUNCTION SELECT control to "COPY". **** COPY **** Step 2 Turn the PARAMETER SELECT control three steps clockwise to access the "CA> XX to >CA XX" parameter, as shown below.
Operating the Xpression™ Tap Delay The Xpression allows you to change the delay times and/or modulation rates for any given preset while you are playing two different ways: 1. By tapping the TAP DELAY/RATE button on the front panel of the Xpression, or 2.
Operating the Xpression Program Changes Program Changes allow for different MIDI program numbers to be assigned to Xpression preset numbers. For example, MIDI program #58 can be mapped to Xpression preset #34. Then, when program #58 is selected from a MIDI transmitting device (such as a Rocktron All Access foot controller), preset #34 will be recalled on the Xpression. The Program Changes Map table is shipped from Rocktron at a one-to-one correspondance (i.e.
Operating the Xpression Step 5 If "MAP" has been selected, turn the PARAMETER SELECT control one step clockwise to display the current Program Changes mapping assignments. XXX Step 6 MAP TO XXX The number on the left of the display is the MIDI program number (or the number sent via a MIDI footswitch or other MIDI transmitter). Turn the PARAMETER SELECT control to select the MIDI program number to map to a preset.
Operating the Xpression 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. Step 1 Turn the FUNCTION SELECT control clockwise until the Xpression displays "MIDI CHANNELS".
Operating the Xpression 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.
Operating the Xpression Step 4 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. 32 PR DUMP/LOAD TRANSMITTING XPRESSION Step 5 Use the PRESET control on the receiving Xpression to select the preset location to store the received preset.
Operating the Xpression 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.
Operating the Xpression Step 5 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).
Operating the Xpression To reload user data from a sequencer Step 1 Connect a standard MIDI cable from the MIDI OUT of the transmitting sequencer to the MIDI IN on the receiving Xpression. IMPORTANT: Do not allow a looping connection from the MIDI OUT/THRU of the receiving Xpression back to the MIDI IN of the transmitting sequencer. Step 2 Turn the FUNCTION SELECT controls on both the receiving Xpression until "MIDI DUMP/ LOAD" is displayed.
Operating the Xpression Step 4 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).
Operating the Xpression 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: Step 1 Turn the FUNCTION SELECT control clockwise to "FACTORY RESTORE".
Operating the Xpression !! CAUTION !! Pressing the STORE button at this time will overwrite the current preset with the displayed factory preset. Step 5 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.
Operating the Xpression 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. Step 1 Turn the FUNCTION SELECT control clockwise to "FACTORY RESTORE". FACTORY RESTORE Step 2 Turn the PARAMETER SELECT control two steps clockwise to "ALL RESTORE 0".
Operating the Xpression Step 4 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.
Operating the Xpression 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. Step 1 Turn the PRESET control to the preset number you wish to be recalled each time the unit is turned on. 34 Step 2 PRESET TITLE Press the STORE button while viewing the preset number and title to save it as the Power On preset.
Operating the Xpression Selecting a Configuration The Xpression allows you to select which configuration—Classic or Rotary—is active for the current preset. Step 1 Turn the FUNCTION SELECT control fully clockwise to "CONFIG SELECT". CONFIG SELECT Step 2 Turn the PARAMETER SELECT control to access the "XXXXXXX SELECTED" parameter. CLASSIC SELECTED Step 3 Turn the PARAMETER ADJUST control to select the desired configuration.
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 RECEIVE ERROR MIDI INFORMATION IS BEING RECEIVED AT THE MIDI IN AT THE SAME INFORMATION IS BEING DUMPED. MIDI SYSTEM EXCLUSIVE INFORMATION WAS NOT RECEIVED CORRECTLY. DISCONNECT MIDI CORD AT MIDI IN OF TRANSMlTTING XPRESSION. BULK LOAD WAS TRANSMITTED TOO FAST.
MIDI Implementation MIDI IMPLEMENTATION Xpression Date: March 1, 2003 Version: 1.
Technical Data TECHNICAL DATA MEASUREMENT CONDITIONS Maximum Input: +20dBu Input Level pot minimum Maximum Output: +20dBu Output Level pot maximum Nominal Input Range: (16dB Headroom) +4dBu to -21dBu Input Level pot minimum Input Level pot maximum Input Impedance: 470K ohms Output Impedance: 120 ohms Dynamic Range: 104dB (HUSH IN) 94dB (HUSH OUT) Peak Signal/A Weighted Noise Floor, Direct Level = +6dB, Digital, Effects Level = -∞ THD+N .
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Suggested MIDI Footcontrollers: Rocktron All Access Rocktron MIDI Mate Rocktron MIDI XChange www.rocktron.com Rocktron - A Division of GHS Corporation 2813 Wilber Ave Battle Creek MI - 49015 USA Tel: 1-269-968-3351 Fax: 1-269-968-6913 Email: info@rocktron.
