User Manual
Table Of Contents
- A Few Words of Thanks
- Chapter 1: Getting Started
- Rear Panel Connections
- Setting Up the Pro 3
- Using the Main Display
- Sound Banks
- Editing Programs
- Saving a Program
- Using Paraphonic Mode
- Exploring the Pro 3 in Greater Depth
- Chapter 2: Pro 3 Controls
- Oscillators
- Mixer
- Filters
- Amplifier Envelope
- Auxiliary Envelopes
- Low Frequency Oscillators
- Modulation
- Effects
- Arpeggiator
- Sequencer
- Normal, Gated, and Trigger Modes
- Programming the Sequencer
- Recording Phrases/Sequences A,B,C, or D.
- Sequencing Parameter Changes in Real-Time
- Copying a Sequence from One Track to Another
- Copying and Pasting an Entire Sequence
- Muting a Sequence Track
- Creating An Extended Sequence
- Paraphonic Sequencing
- Adding Rests, Ties, and Velocity
- Editing Duration
- Adding Ratcheting
- Editing Other Elements of a Sequence
- Setting or Changing the Destination of a Track
- Recording Additional Sequencer Tracks for Modulation
- Using Slew
- Turning off the Sequencer’s “Notes” Track
- Sequencer Parameters (Front Panel)
- Additional Sequencer Parameters (Display Menus)
- Cue Program
- Tuned Feedback
- Master Volume/Program Volume
- Transpose
- Hold
- Glide
- Pitch and Mod Wheels
- Touch slider
- Adding Aftertouch
- Distortion
- Play List
- Miscellaneous Parameters
- Global Settings
- Chapter 3: Programming the Pro 3
- Synthesis 101: Synth Bass
- Creating Synth Brass
- Creating a Hard-Sync Lead
- Chapter 4: Using the Pro 3 with External Devices
- Appendix A: Modulation Sources
- Appendix B: Modulation Destinations
- Appendix C: Troubleshooting and Support
- Appendix D: Calibrating the Pro 3
- Appendix E: Alternative Tunings
- Appendix F: MIDI Implementation
- Bookmark 1
- Bookmark 1
24
Filters
Sequential
Filters
The Pro 3 has three different lters, each of which has its own unique
character:
• low-pass 1 - 4-pole ota is a 4-pole, 24 db-per-octave resonant lter
based on the Sequential Prophet-6 lter. It can self-oscillate (generate a
sine wave) when resonance is set to its maximum.
• low-pass 2 - 4-pole ladder is a classic 4-pole, 24 db-per-octave resonant
transistor ladder lter. It can self-oscillate when resonance is set to its
maximum
• state-variable - 2-pole ota is a 2-pole, 12 db-per-octave lter based on
the Sequential OB-6 lter. It features low-pass, band-pass, high-pass,
and notch operation. The State-Variable lter cannot self-oscillate.
Another characteristic of the State-Variable lter is that increasing the
amount of resonance does not decrease the amount of low-frequencies
(bass). On Low-pass 1 and Low-pass 2, increasing the amount of reso-
nance de-emphasizes low frequencies. The bp and state controls apply
only to the State-Variable lter.
The differences between these lters can be subtle or dramatic, depending
on their individual settings, the amount of lter resonance applied, and
other factors. The function of the lters is to subtract frequencies from
the sound produced by the oscillators, noise generator, and/or external
audio input, thereby changing the overall harmonic content of the synth’s
sound. This change is varied over time using the Filter Envelope to
produce more dynamic timbres.