Sequential Prophet Rev 2 User Manual
8/16-Voice Polyphonic Synthesizer
User’s Guide
Version 1.2
Feb 2019
Sequential LLC
1527 Stockton Street, 3rd Floor
San Francisco, CA 94133
USA
©2019 Sequential LLC
www.sequential.com
Tested to Comply
With FCC Standards
FOR HOME OR OFFICE USE
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful interference and (2) this device must accept any interference received, including
interference that may cause undesired operation.
Table of Contents
A Few Words of Thanks ...............................ix
Getting Started ........................................1
Sound Banks ...........................................1
Selecting Programs ......................................2
Editing Programs ........................................2
Comparing an Edited Program to its Original State ..............3
Creating a Program from Scratch ............................ 3
Saving a Program ........................................ 4
Canceling Save ..........................................4
Naming a Program .......................................5
Working with Stacked or Split Programs ......................6
Moving to the Next Level .................................10
Connections .........................................12
Global Settings ......................................14
This Class B digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil numerique de la classe B respecte toutes les exigences du
Reglement sur le materiel brouilleur du Canada.
For Technical Support, email: support@sequential.com
Oscillators ..........................................20
Oscillator Parameters ....................................21
Filter ...............................................23
Filter Envelope .......................................25
Amplier Envelope ...................................27
Auxiliary Envelope ...................................29
Low Frequency Oscillators. . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Modulation ..........................................33
Modulation Parameters ...................................34
Modulation Examples ....................................34
Effects. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Effects Parameters ......................................38
Arpeggiator .........................................40
Arpeggiator Beat Sync ...................................41
Arpeggiator “Momentary Sustain” Mode ...................... 42
MIDI Note Output from the Arpeggiator and Sequencer ..........42
Arpeggiator Parameters ..................................43
Clock Parameters .......................................44
Sequencer ..........................................45
Changing Presets While the Poly Sequencer is Running ......... 46
Programming the Polyphonic Sequencer .....................47
Editing a Polyphonic Sequence ............................48
Copying a Polyphonic Sequence Between Layers .............. 49
Programming the Gated Sequencer. ..............................50
Using Slew ............................................51
Sequencer Parameters ................................... 52
Clock Parameters .......................................53
Unison .............................................54
Using Chord Memory ....................................55
Master Volume/Program Volume ........................57
Exporting Programs and Banks .........................67
Importing Programs and Banks .........................68
Calibrating the Prophet Rev2 ...........................69
Calibrating the Oscillators and Filters ........................ 69
Calibrating the Pitch and Mod Wheels ..........................69
Resetting the Global Parameters ...........................70
Using USB ..........................................70
Appendix A:
Modulation Sources ..................................72
Appendix B:
Modulation Destinations ...............................73
Appendix C: Alternative Tunings ........................74
Appendix D: Troubleshooting and Support ...............78
Troubleshooting ........................................78
Contacting Technical Support ..............................80
Warranty Repair ........................................81
Pan Spread ..........................................58
Transpose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Hold ................................................59
Glide ...............................................59
Pitch and Mod Wheels ................................61
Pitch Wheel ............................................ 61
Modulation Wheel ....................................... 62
Adding Aftertouch ....................................62
Appendix E: MIDI Implementation .......................82
MIDI Messages ......................................... 83
NRPN Messages .......................................87
Control NRPN Data .....................................95
SysEx Messages .......................................95
Packed Data Format ....................................98
SOUND DESIGN
Joseph Akins, Rory Dow, Peter Dyer, Josh Eustis, Peter Gorges, Mike Hiegemann,
Tim Koon, Kurt Kurasaki, Kevin Lamb, Cord Mueller, Drew Neumann, Bob Oxley,
Francis Preve, Lorenz Rhode, Nick Semrad, Huston Singletary, James Terris, and
Mitch Thomas.
A Few Words of Thanks
Thank you for purchasing the Prophet Rev2, the successor to our popular Prophet ’08
synthesizer, which has been a workhorse in the music industry for nearly 10 years.
As enduringly popular as the Prophet ’08 has been, we felt it was time to update it
with new technology and new features.
THE SEQUENTIAL CREW
Art Arellano, Fabien Cesari, Bob Coover, Carson Day, Chris Hector, Tony Karavidas,
Mark Kono, Justin Labrecque, Andy Lambert, Michelle Marshall, Andrew McGowan,
Joanne McGowan, Julio Ortiz, Tracy Wadley, and Mark Wilcox.
Special thanks to Robert Rich for the alternative tunings content.
To that end, we designed the Prophet Rev2 by enhancing and improving everything we could about the original Prophet ’08 and, in many cases, doubling its
power. We took the classic sound of the Prophet ’08’s DCO and Curtis-lter-based
voice and added powerful new features that the original never had, such as waveshape modulation, digital effects, an expanded modulation matrix, a polyphonic step
sequencer (in addition to its original gated step sequencer), a more intuitive user interface, USB connectivity, and more. The result is a modern classic revisited.
Creating the Prophet Rev2 has been a very satisfying adventure in making a good
synth even better. Create some great sounds with it!
Cheers,
Getting Started
OSC 1 FREQ
SYNC
FINE TUNE
SHAPE
SOURCE
DESTINATION
SHAPE MOD SUB OCTAVE
OSC MIX
CUTOFF
PROGRAM
BANK
PARAMETER
VALUE
RESONANCE ENV AMOUNT VELOCITY
Edit Layer B
Stack A+B
MISC PARAMS
show
Split A | B
Compare
Write
Global
U1 P1
Filter Sweep
Osc 1 Freq
C2
120
Phones Left
MAIN/A OUTPUT B OUTPUT
Right Left Right Pedal/CV Sustain Sequencer MIDI Thru MIDI Out MIDI In USB On/OffAC In
KEY AMOUNT AUDIO MOD
SHAPE MOD
NOISE
OSC SLOP
1 2
Triangle
Sawtooth
Rev Saw
Square
Random
SHAPE 4 POLE DELAY ATTACK DECAY SUSTAIN RELEASE
Sawtooth
Saw+Tri
Triangle
Pulse
SHAPE
KEY SYNC
CLK SYNC
Sawtooth
Saw+Tri
Triangle
Pulse
OSC 2 FREQ
FREQUENCY
AMOUNTDESTINATION
PITCH MOD
1
2
3
4
FINE TUNE
OSCILLATORSLOW FREQUENCY OSCILLATORS LOW-PASS FILTER
AUXILIARY ENVELOPEEFFECTCLOCK ARPMODULATION
DESTINATIONMASTER VOLUME
ATTACK
ENV AMOUNT
DECAY
SELECT
AMOUNT
RATE
GLIDE
HOLDUNISON
VELOCITY
SUSTAIN
DELAY
TAP TEMPO ON/OFF
MODEBPM DIVIDE
RELEASE
SELECTON/OFF
CLK SYNC
MIX
PARAM 1 PARAM 2
AMPLIFIER
PAN SPREAD
ATTACK
ENV AMOUNT
DECAY
VELOCITY
SUSTAIN
DELAY
RELEASE
TYPE MODE
rest
DESTINATION
tie
RECORD
Gated
Poly Seq
Only
TRACK
Poly
SEQUENCER
TRANSPOSE
Down
Up
The Prophet Rev2 is a 8/16-voice polyphonic synthesizer with analog
oscillators, lters, and ampliers. The majority of its sound-shaping
controls are located on its front panel, putting a tremendous amount of
power and versatility within easy reach.
This chapter of your user’s guide provides a brief overview of the Rev2,
including such essential tasks as how to edit and save sounds. Later
sections of this manual explain each of the Prophet Rev2’s parameters.
Don’t hesitate to dive right in and start turning knobs and pressing
buttons before you begin reading. Start exploring and let your ears guide
you!
Prophet Rev2 front panel
Sound Banks
The Prophet Rev2 contains a total of 1024 programs. Banks U1-U4 are
user banks that can be overwritten. Banks F1-F4 are factory banks that
are permanent. As shipped, user banks U1-U4 are identical to permanent
factory banks F1-F4. Each bank has 128 programs (x 4 banks = 512
programs each). You can edit the programs of either bank, but you can
only save them to user banks U1-U4.
Why do we include banks of non-rewritable permanent sounds? So
that they are always available, to be used as is, or as templates for new
sounds of your own. It’s easy to design a new sound by tweaking an
existing one.
Prophet Rev2 User’s Guide
Getting Started
1
Edit Layer B
Stack A+B
Split A | B
Compare
Write
Global
U1 P1
AUXILIARY ENVELOPEEFFECTCLOCK ARPMODULATION
DESTINATIONMASTER VOLUME
ATTACK
ENV AMOUNT
DECAY
VELOCITY
SUSTAIN
DELAY
RELEASE
SELECTON/OFF
CLK SYNC
MIX
PARAM 1 PARAM 2
Filter Sweep
Osc 1 Freq
C2
show
MISC PARAMS
120
PROGRAM
BANK
Comparing an Edited Program to its Original State
When editing a program, it is often useful to compare its edited state
to its original state to evaluate your edits. Alternatively, before saving
a program to a new location you may want to check the program in the
target location before you overwrite it.
To compare an edited program to a saved version:
1. Edit a program.
Program and Bank controls
Selecting Programs
Use the bank and program knobs to select and recall programs.
To choose a program:
1. Turn the bank knob to select the bank you want.
2. Turn the program knob to select a program within that bank.
Editing Programs
Because the majority of the sound-shaping controls of the Prophet Rev2
appear on its front panel, editing an existing program is simple: just turn a
knob and listen to its effect. Keep turning knobs and pressing buttons. If you
like what you’ve created, save the program. (See “Saving a Program” on
page 4.)
The rotary controls on the front panel are a mixture of “endless” rotary encoders
(which have no position indicator) and potentiometers or “pots,” which have a position
indicator and a nite travel range from left to right. You can choose between three
different modes that determine how the synth reacts when you edit its parameters with
a pot. For details, see “Pot Mode” on page 16.
2. Press the compare button. It lights up, indicating compare mode.
3. Play the keyboard to hear the saved version of the sound.
4. To disable the compare function and return to the edited sound, press
the compare button again to turn it off. Programs can’t be written while
in compare mode.
It’s also useful to be able to check the value of a parameter for reference.
Normally, to make a parameter value appear in the display, you have to
turn the parameter’s knob — which will change the parameter value. But
there is a way to do this without changing the value:
To check the value of a parameter without changing it:
1. Press and hold the misc parameter button.
2. Turn any parameter knob. The value appears in the display.
3. To check additional parameter values, continue holding d own the
misc parameter button and turn other knobs to check their value.
Creating a Program from Scratch
An existing program can be very useful as a jumping off point for new
sounds. But it’s also useful (and educational) to create a new sound from
scratch. The Prophet Rev2 makes this easy by providing a “basic preset”
that you can quickly recall at any time. This preset is very simple, with a
single oscillator as its basis.
To recall the basic preset:
2
Sequential Prophet Rev2 User’s Guide
• In the transpose section, press and hold the down and up buttons simultaneously, then press the hold button.
Getting Started
3Getting Started
To recall the basic preset using the Global Menu:
1. Press the global button.
2. Use the parameter knob to select basic program.
Comparing Before You Save
Before saving a program to a new location, it’s a good idea to listen to the
program in the target location to make sure you really want to overwrite it.
3. Press the write button.
Saving a Program
If you’ve created a sound that you like, you’ll probably want to save it.
Saving a program overwrites a previously saved program. Sound designers often save many incremental versions of a program as they continue
to rene it. These intermediate versions often make good jumping off
points for new sounds.
To save a program to the same preset location:
1. Press the write button. Its LED begins blinking.
2. Press the write button again. Its LED stops blinking and the program is
saved.
To save a program to a different location:
1. Press the write button. Its LED begins blinking.
2. Turn the bank or program knobs to select a new location. You can only
save to banks U1-U4.
3. Press the write button again. Its LED stops blinking and the program is
saved.
To evaluate a program before you overwrite it:
1. Get ready to save by pressing the write button. It starts ashing.
2. Press the compare button. Its LED lights up.
3. Use the bank and program knobs to navigate to the sound you want to
compare and play the keyboard to hear the sound.
4. To disable the compare function and go back to the edited sound, press
the compare button again to turn it off. (Programs can’t be written
while in compare mode.)
5. If you want to save the edited sound, the write button is still ashing
and ready to save, so navigate to a location with the bank and program
knobs and press write. The sound is saved.
6. Alternatively, if you want to cancel saving and continue editing, press
the global button. Saving is canceled.
Naming a Program
You can rename a program when the write command is active.
To rename a program:
1. Press the write button. Its LED begins blinking.
Saving a program saves any edits to programs on both Layer A and Layer B.
Canceling Save
Sometimes you may want to cancel saving a program before you commit.
To cancel the save process before you commit:
• If the write button LED is ashing, press the global button. The write
LED stops ashing and saving is canceled. You can return to editing if
you want.
4
Sequential Prophet Rev2 User’s Guide
2. Turn the parameter knob to move the cursor forward or backward
3. Turn the value knob to select a character.
4. When you’re done naming the program, press the write button again.
Its LED stops blinking and the program is saved.
Getting Started
5Getting Started
Working with Stacked or Split Programs
The Prophet Rev2 is bi-timbral, meaning that it can produce two
different sounds/programs at the same time, either by stacking them, or
by allowing you to split the keyboard and assign one sound to the upper
section of the keyboard and a different sound to the lower section of the
keyboard.
Stacked Programs
Stacking two programs allows you to create extra fat sounds, since you
can have two completely different programs layered on top of each other.
Polyphony is halved in Stack mode, so if you have a 16-voice Prophet
Rev2, in Stack mode, it functions as an 8-voice because it uses two
voices for each key played.
The two layers are referred to as Layer A and Layer B. By default, Layer
A is always active when you recall a program. If either the split a|b
button or the stack a+b button is lit, then Layer B is also active.
Each Layer can have different Effect, Unison, Arpeggiator, and
Sequencer settings. This allows for some very interesting combinations
of sounds.
As you scroll through various factory programs, you can tell which are
stacked and which are split. On stacked sounds, the stack a+b button is
lit. On split sounds, the split a|b button is lit.
All factory programs have a “B” layer, even if that layer isn’t currently enabled.
To hear Layer B in isolation, press the edit layer b button and disable stack or split (if
active) by turning off the stack a+b btutton or split a|b button. Pressing edit layer b a
second time enables Layer A again.
Button is lit when
split is active
To turn Stack mode on:
• If it’s not currently lit, press the stack a+b button. The button becomes
lit. The program on Layer B is stacked with the program on Layer A.
Polyphony is halved since two voices are used per note.
To turn Stack off:
• If it’s currently lit, press the stack a+b button. The button becomes
unlit. Only the program on Layer A is heard.
To edit Layer B:
1. Press the edit layer b button. Layer B editing is enabled.
2. Change any parameters to change the sound of Layer B.
3. Press the edit layer b button again to turn off Layer B editing.
To edit Layer A and B simultaneously:
1. With Stack mode on (stack a+b button is lit) press and hold the edit
layer b button. It begins ashing, indicating that you are in “Link”
mode.
2. Change any parameters. The parameters are changed on both Layer A
and Layer B.
PROGRAM
BANK
Split and Stack buttons
6
Global
Write
Compare
Split A | B
Stack A+B
Edit Layer B
Button is lit when
stack is active
Press to enable
Layer B editing
3. To turn off Link mode, press the edit layer b button again. It stops
ashing.
Saving a program saves any edits to programs on both Layer A and Layer B.
Sequential Prophet Rev2 User’s Guide
Getting Started
7Getting Started
To copy Layer A to Layer B:
1. Press both the split a|b button and the stack a+b button simultaneously.
2. Turn the parameter knob and select copy layer a to b.
3. Press the write button. Layer A is copied to Layer B.
Split Programs
In split mode, playing a key on the left side of the keyboard will play the
Layer A sound and playing a key on the right side will play the Layer B
sound. Polyphony is allocated equally between the two sounds, with half
of the available voices on Layer A and half on Layer B.
To copy Layer B to Layer A:
1. Press both the split a|b button and the stack a+b button simultaneously.
2. Turn the parameter knob and select copy layer b to a.
3. Press the write button. Layer B is copied to Layer A.
To swap Layer A and Layer B:
1. Press both the split a|b button and the stack a+b button simultaneously.
2. Turn the parameter knob and select swap a and b.
3. Press the write button. Layer A and B are swapped.
The specic key that starts the Layer B sound is called the split point,
and is saved with the program.
All factory programs have a “B” layer, even if that layer isn’t currently enabled.
To turn Split on:
• If it’s not currently lit, press the split a|b button. The button becomes
lit. The left side of the keyboard plays the Layer A sound and the right
side of the keyboard plays the Layer B sound.
To turn Split off:
• If it’s currently lit, press the split a|b button. The button becomes unlit.
Only the program on Layer A is heard across the full range of the
keyboard.
To set the split point:
1. Make sure the split a|b button is lit.
2. Press and hold the split a|b button and press a key on the keyboard.
This sets the start point for Layer B.
3. Release the split a|b button.
To swap Layer A and Layer B sounds:
1. Press both the split a|b button and the stack a+b button simultaneously.
2. Turn the parameter knob and select swap a and b.
3. Press the write button. Layer A and B are swapped.
8
Sequential Prophet Rev2 User’s Guide
Getting Started
9Getting Started
Moving to the Next Level
Before you start exploring the sound creation capabilities of the Prophet
Rev2 we’d like to point you toward a few things that will help you tailor
the instrument to your needs.
First, check out the Global Settings section of this manual. Read about
Pot Modes and determine which works best for you when you’re editing
sounds. You’ll also nd information about MIDI setup. Read this to more
effectively integrate the Prophet Rev2 into your MIDI rig. To get the
most out of the Prophet Rev2’s live performance capabilities, read up on
using a footswitch or expression pedal.
And nally, be on the lookout for tips and notes scattered throughout
this manual to gain a better working knowledge of the Prophet Rev2.
The better you know it, the more you’ll get out of it. We wish you many
hours of musical exploration!
10
Sequential Prophet Rev2 User’s Guide
Getting Started
11Getting Started
Connections
4 5 6 9
PEDAL/CV
MAIN A OUTPUT
7 8
B OUTPUT
1 2 3
1. AC Power Connector—Accepts a standard, grounded IEC power
cord. Operates over a range of 100 to 240 volts and 50 to 60 Hz.
2. USB—For bidirectional MIDI communication with a computer. The
Prophet Rev2 is a Class Compliant USB device and does not require
additional drivers when used with Mac OS or Windows. See “Using
USB” on page 70 for more information.
3. MIDI In, Out, and Thru—Standard 5-pin MIDI DIN connectors.
4. Sequencer—Accepts a momentary, normally open or normally closed
footswitch to turn the sequencer or arpeggiator on and off. Alternatively, an
audio signal connected to this jack can be used to either control sequencer/
arpeggiator playback, or to gate the lter and amplier envelopes while
notes are held. See Pedal/CV on page 13 for more information about
choosing the appropriate mode for these behaviors.
PEDAL/CV
4 5 6 9
B OUTPUT
MAIN A OUTPUT
7 8
6. Pedal/CV—Accepts a standard expression pedal that has a variable
resistor on a TRS (tip-ring-sleeve) ¼ inch phone plug. Once connected,
you can use the modulation matrix to route the pedal to control a variety
of things such as volume or lter cutoff frequency to add expressiveness
to live performance.
7. B Audio Outputs—Unbalanced, ¼ inch audio outputs. Connect audio
cables to these jacks if you want separate stereo outputs for Layer B. If
no cables are connected, Layer B is output on the Main A Outputs.
8. Main/ A Audio Outputs—Unbalanced, ¼ inch audio outputs. These
are the main stereo outputs for the synth. They carry Layer A and also
Layer B if no cables are connected to the “B Audio Outputs” jacks.
9. Headphones—A ¼ inch stereo headphone jack. Headphone volume is
controlled by the master volume knob on the front panel.
Audio signals used to drive the arpeggiator/sequencer should not exceed 5
volts peak-to-peak.
5. Sustain—Accepts a momentary, normally open or normally closed
footswitch to control sustain.
12
Sequential Prophet Rev2 User’s Guide
Connections
13Connections
Global Settings
Press the global button and use the parameter and value knobs to scroll
through and set parameters such as Master Tune and MIDI Channel that
affect all programs globally.
1. Master Coarse Tune: -12…+12—Master Transpose control, 0 is
centered. Steps in semitones up to one octave up (+12) or down (-12).
2. Master Fine Tune: -50…+50—Master Fine Tune control; 0 centered.
Steps in cents as much as a quarter-tone up (+50) or down (-50).
3. MIDI Channel: All, 1…16—Selects which MIDI channel to send and
receive data, 1 to 16. Choosing all receives on all 16 channels.
4. MIDI Clock Mode: Sets the synthesizer’s ability to send and receive
MIDI clock messages:
• Off: MIDI Clock is neither sent nor received
• Master: MIDI Clock is sent, but not received.
• Slave: MIDI Clock is received, but not sent.
• Slave Thru: MIDI Clock is received and passed to MIDI Out
• Slave No S/S (no start and stop): Receives MIDI Clock but does not
respond to MIDI Start or Stop command.
7. MIDI Param Receive: Off, CC, NRPN—Sets the method by which
parameter changes are received via MIDI. As with transmission, NRPNs
are the preferred method.
8. MIDI Control Enable: Off, On—When On, the synth will respond to
MIDI controllers, including Pitch Wheel, Mod Wheel, Pedal, Breath,
Volume, and Expression.
9. MIDI Program Enable: Off, On—When On, the synth will respond
to received MIDI Program Change and other SysEx messages, and will
transmit them (when prompted) to the MIDI Out. See “SysEx Messages”
on page 95 for details.
10. MIDI Program Send: On, Off—When enabled, selecting a program
on the Rev2 will select a program with a corresponding number on an
external synthesizer or device that is congured to accept MIDI Program
Change commands.
11. MIDI Sysex Cable: None, MIDI Port, USB—Sets the port, MIDI or
USB, by which System Exclusive data will be transmitted and received.
12. MIDI Out Select: Off, MIDI, USB, MIDI+USB—Sets the port by which
MIDI data will be transmitted.
In Slave and Slave Thru modes, if no MIDI clock is present at the selected
input, the arpeggiator and sequencer will not function.
5. MIDI Clock Cable: MIDI Port, USB—Sets the port, MIDI or USB, by
which MIDI clocks are received.
6. MIDI Param Send: Off, CC, NRPN—Changes to the values of front
panel controls are transmitted via MIDI as Non-registered Parameter
Number (NRPN) controllers or as Continuous Controllers (CC). Transmission of parameters can also be turned off. See “Appendix E: MIDI
Implementation” on page 82 for details.
NRPNs are the preferred method of parameter transmission, since they cover
the complete range of all parameters, while CCs are limited to a range of 128.
14
Sequential Prophet Rev2 User’s Guide
13. MIDI Arp+Seq: Off, On—When On, the synth’s arpeggiator and
sequencer output MIDI note numbers. You can use this feature to drive
other MIDI-equipped devices such as synthesizers and drum machines.
14. Arp Beat Sync: Off, Quantize—When set to quantize, Arpeggiator
note playback occurs only on the beat — regardless of when you press a
key on the keyboard.
15. Multi Mode: On, Off—Multi Mode allows separate MIDI control of
voices 1-8 and voices 9-16 on 16-voice systems. (On 8-voice systems
this is voices 1-4 and voices 5-8.) This enables independent, bi-timbral
control of the Prophet Rev2.
Global Settings
15Global Settings
When Multi Mode is on, the Prophet Rev2 responds to MIDI data on two
consecutive MIDI channels — the base channel (selected in the Global
menu) and the next highest channel. The base channel controls voices 1-8
(or 1-4 on 8-voice systems) and the other channel controls voices 9-16
(or 5-8 on 8-voice systems). Notes, program changes, and other MIDI
data received on the specied channels provide independent control of
the two parts.
Note that a program change needs to be sent to each of the two channels when setting up Multi Mode. Only Layer A of the selected program
is loaded. There are no stacks or splits in Multi Mode. Use CCs or
Layer A NRPNs for automation of parameters. Program Layer B data is
completely ignored in Multi Mode
16. Local Control: Off, On—When on (the default), the keyboard and
front panel controls directly affect the Prophet Rev2. When off, the
controls are transmitted via MIDI but do not directly affect the “local”
synth (that is, the Prophet Rev2). This is primarily useful for avoiding
MIDI data loops that can occur with some external sequencers.
17. Velocity Curve: Curve 1... Curve 8—Sets one of the eight velocity
curves for the keyboard to adjust the velocity response to your playing
style.
18. Pressure Curve: Curve 1, Curve 2, Curve 3, Curve 4—Sets one of four
pressure curves for the keyboard to adjust the aftertouch to your playing style.
When set to relative, changes are relative to the stored setting. In Rela-
tive mode, the full value range is not available until either the minimum
or maximum value and the respective lower or upper limit of the pot’s
travel is reached.
For example, the Resonance parameter has a value range of 0 to 127.
Let’s say the physical position of the Resonance pot is the equivalent of
a value of 100. If you switch to a program that has a stored Resonance
setting of 63 and turn the pot all the way up, it will only go to 90. To get
to the maximum value of 127, you rst have to turn down until the value is
at the other extreme and the pot is at the limit of its travel (in this case, 0
and fully counter-clockwise, respectively).
In Passthru mode, turning the pot has no effect until after the edited value
equals the preset value (that is, until the edited value “passes through”
the stored value).
Jump mode uses an absolute value based upon the position of the pot
when edited: turn a pot and the value jumps immediately from the stored
value to the edited value.
21. Alt Tuning: Equal Temperment, 1…17—Selects one of the Prophet
Rev2’s built-in tunings. Set to 1. equal temperment, the tuning is standard,
chromatic tuning. Choosing 2 through 16 selects an alternative, non-chromatic, non-Western scale that can be used to emulate ethnic instruments or in
other creative ways.
19. Mono/Stereo: Stereo, Mono—The Prophet Rev2 defaults to stereo
operation. When set to Mono, this parameter defeats all pan settings and
modulation, effectively making each of the outputs a mono output.
20. Pot Mode:
Prophet Rev2’s front
Relative, Passthru, Jump—The rotary controls on the
panel are a mixture of “endless” rotary encoders and
potentiometers or “pots.” The pots are identiable by their lined knobs
and the fact that they have about 300° of travel. There are three pot
modes to determine how the synth reacts when the programmable parameters are edited. (Master volume is not programmable, so these modes
don’t apply.)
16
Sequential Prophet Rev2 User’s Guide
See “Appendix C: Alternative Tunings” on page 74 for a description of
each tuning. Additional tunings can be imported as a SysEx message. For
more information, see Appendix A.
Global Settings
17Global Settings
22. Screen Saver: On, Off—The Prophet Rev2 display has a built-
in screen saver that puts it to sleep when not in use. This features is
designed to prolong the life of the display and we recommend using it. If,
however, you want to disable this feature you can do so by setting it to Off.
23. Seq Pedal Mode: Normal, Trigger, Gate, T-G—Selects the mode for
signals received on the rear-panel sequencer jack.
• With normal selected, a footswitch will start sequencer playback.
• With trig selected, an audio signal connected to the sequencer jack will
step the sequencer when the sequencer’s play button is on.
• With gate selected, an audio signal connected to the sequencer
jack will trigger and gate the envelopes while you hold a note or
chord. Additionally, turning on the sequencer or arpeggiator will add
sequencer or arpeggiator playback — but controlled by the Prophet
Rev2’s clock bpm and value settings and not the audio trigger.
• With t-g (trigger+gate) selected, an audio signal connected to the
sequencer jack will trigger and gate the envelopes while you hold a
note or chord. Additionally, pressing the sequencer’s play button will
also add synchronized sequencer playback.
24. Foot Assign: Breath CC2, Foot CC4, Exp CC11, Volume, LPF Full,
LPF Half—Sets the modulation destination for the rear-panel Pedal/CV
input.
25. Pedal Polarity: Normal, Reversed—There are two types of momen-
tary footswitches, normally open and normally closed. Either type can
be used with the Sustain switch input. This setting allows you to accommodate both models in case yours behaves in a way that is the opposite
of what you expect due to its polarity. (Sustain is on until the footswitch
is pressed and then it turns off, which is the opposite of the expected
behavior.) Connect your pedal and choose the appropriate setting based
on its behavior.
26. Sustain Arp: Arp hold, Sustain—Sets the function for the Sustain
pedal input the rear of the synthesizer. Selecting arp hold and pressing
the sustain pedal causes the arpeggiator to hold the current arpeggio as
if you had pressed the hold button on the front panel. Selecting sustain
chooses normal sustain pedal operation. Selecting hold mom causes the
arpeggiator to sustain (even when you release the notes on the keyboard)
for as long as you hold down the pedal. Releasing the Sustain pedal stops
the arpeggiator.
27. Save Edit B: Off, On—When off, disables saving of Layer B when
you save a program. When on, both Layer A and Layer B of the program
are saved .
28. Calibrate Wheels—Calibrates the Pitch and Mod wheels.
29. Basic Program—Loads a basic, template program.
30. Calibrate—Calibrates the oscillators and lters. You shouldn’t need
to do this under normal circumstances since the lters are calibrated at
the factory and generally don’t require re-calibration or re-tuning.
31. Reset Globals—Sets the global parameters to the factory default
settings.
32. Dump Program—Transmits the current program in SysEx format via
the selected MIDI port. Dumped programs will load back into the same
location in memory when imported back into the synth via MIDI.
33. Dump Bank—Transmits the current bank in SysEx format via the
selected MIDI port. (See item 11, “MIDI Sysex Cable.”) Dumped banks
will load back into the same location in memory when imported back
into the synth via MIDI.
34. Dump All Banks—Transmits all four User Banks in SysEx format
via the selected MIDI port. (See item 11, “MIDI Sysex Cable.”) Dumped
banks will load back into the same location in memory when imported
back into the synth via MIDI.
18
Sequential Prophet Rev2 User’s Guide
Global Settings
19Global Settings
33. Dump Scale—Transmits the currently active alternative tuning scale
in SysEx format via the selected MIDI port. (See item 11, “MIDI Sysex
Cable.”) Dumped scales will load back into the same location when
imported back into the synth via MIDI.
Oscillator 1 can be hard-synced to Oscillator 2 for harmonically-complex
sounds when modulated. Both oscillators feature a fine tune knob for
detuning and thickening sounds.
34. Dump All Scales—Transmits the entire set of 16 alternative tuning
scales in SysEx format via the selected MIDI port. (See item 11, “MIDI
Sysex Cable.”).
Oscillators
Oscillators provide the raw building blocks of the Prophet Rev2’s sound
by producing waveforms, each of which has its own inherent sound character based on its harmonic content. The Prophet Rev2 has two oscillators, plus a sub oscillator and a noise generator, per voice.
Oscillator 1 and 2 are capable of generating sawtooth, sawtooth + triangle, triangle, and pulse waves. You can vary the width of any of these
waveshapes using the shape mod parameter. This provides a great variety
of different waveshapes and timbres.
The oscillators on the Prophet Rev2 are extremely stable. To emulate the
random pitch drift and oscillator instability of vintage instruments, use the osc slop
parameter to dial in as little or as much drift as you like.
You can force either or both of the oscillators to start its wave cycle from its
beginning (its zero crossing) each time you press a note on the keyboard by setting
note reset to on in the misc parameters menu. This is can be useful for creating sounds
that have a very consistent sound each time you trigger them.
Oscillator Parameters
Osc Freq: Sets the base frequency of Oscillator 1 or 2 over a 9-octave
range from 16 Hz to 8KHz (when used with the Transpose buttons). Adjustment is in semitones.
The global master coarse and master fine settings affect the pitch of the oscilla-
tors. See “Global Settings” on page 14 for more information.
Fine Tune: Fine tune control with a range of a quartertone up or down.
The 12 o’clock position is centered. Steps are in cents (50 cents = 1/2
semitone).
Shape: Sawtooth, Sawtooth + Triangle, Triangle, Pulse —This button
selects the waveshape generated by the oscillator. You can also turn the
oscillator off by selecting no waveshape.
OSC 1 FREQ
SYNC
OSC 2 FREQ FINE TUNE
The Oscillator section
20
OSCILLATORS
Sawtooth
Saw+Tri
Triangle
FINE TUNE SHAPE MOD SUB OCTAVE
SHAPE
SHAPE
Pulse
Sawtooth
Saw+Tri
Triangle
Pulse
1 2
OSC MIXSHAPE MOD
Shape Mod: Changes the “pulse” width of the selected waveform, which
modies its harmonic content and timbre. To generate a square wave
NOISE
OSC SLOP
Sequential Prophet Rev2 User’s Guide
when pulse is selected as the waveform, set this parameter to 50.
Applying waveshape modulation using a low frequency oscillator or other
modulation source in the mod matrix is a great way to add movement and thickness to
a sound.
Oscillators
21Oscillators
Sync: Off, On—Turns Oscillator 1 hard sync on. Sync forces Oscillator 1
CUTOFF RESONANCE ENV AMOUNT VELOCITY KEY AMOUNT AUDIO MOD
4 POLE DELAY ATTACK DECAY SUSTAIN RELEASE
LOW-PASS FILTER
(the slave) to restart its cycle every time Oscillator 2 (the master) starts
a cycle. This provides a way to create more complex, harmonically rich
shapes from simple waveforms—especially when the frequency of Oscillator 1 is set to a different interval than Oscillator 2.
Filter
The Filter takes the basic, raw sound of the oscillators and noise generator and subtracts frequencies, changing the harmonic content and character of their sound. This change can be varied over time using the Filter
Envelope to produce more dynamic, animated timbres.
Oscillator 1
Oscillator 2
Oscillator 1
synced to
Oscillator 2
Oscillator hard sync
Try using the auxiliary envelope to sweep the pitch of Oscillator 1 when it is
synced to generate the classic, hard-edged sync sound.
Sub Octave: 0…127—Controls the level of a square wave oscillator
pitched one octave below Oscillator 1. Adding a sub octave to sounds
such as bass is a great way to increase low-register presence.
Osc Mix: 0…127—Enables the outputs of oscillators 1 and 2 to be mixed
in varying amounts. A setting of 0 is equivalent to 100% Oscillator 1
and 0% Oscillator 2. A setting of 127 is the opposite. A setting of 64 is a
50-50 mix of both oscillators.
Noise: 0…127 – Sets the output level of the white noise generator.
The Prophet Rev2’s lter is a classic, resonant low-pass Curtis lter that is
switchable between 2-pole operation (12 dB per octave) and 4-pole operation
(24 dB per octave). The 4-pole lter can self-oscillate when resonance is
set to its maximum.
The Prophet Rev2 Filter
Cutoff: 0...164—Sets the lter’s cutoff frequency. Frequencies are
reduced from the top down, cutting the high frequencies and passing the
low frequencies, hence the name “low-pass.”
Resonance: 0...127—Emphasizes a narrow band of frequencies around
the cutoff frequency. High levels of resonance can cause the lter to self-
oscillate in 4-pole mode and generate its own pitch.
Osc Slop: 0…127 – Adds randomized detuning to the oscillators to
emulate the tuning instability of vintage analog oscillators. This tuning
instability is a big part of what made vintage instruments sound characteristically warm and fat. The oscillators in the Prophet Rev2 are very
stable, and will not drift. Use osc slop parameter to dial in as little or as
much drift as you like.
22
High levels of resonance can sometimes cause the Prophet Rev2 outputs to
clip. Monitor your outputs carefully to ensure optimal, clean signal levels. If you experi-
ence signal clipping, try reducing the levels of the resonance parameter in the lter.
Env Amount: -127...127—Sets the amount of modulation from the lter
envelope to the lter’s cutoff frequency. Any setting above zero means
that each time you strike a key, the lter envelope controls how the lter
opens and closes. Higher amounts more dramatically affect the cutoff
frequency. This control is bipolar. Positive settings produce standard
behavior. Negative settings invert the envelope.
Sequential Prophet Rev2 User’s Guide
Filter
23Oscillators
Loading...