Polyphonic Keyboard Controller for Synths
FVC - Four Voice Controller
4 Versions
- Four Voice Controller
- Four Voice Controller + ADSR 5V output for each voice
- Four Voice Controller + ADSR 10V output
- 2nd ADSR for VCF (5 or 10V)
Features
Polyphonic control of 4 MIDI channels
All keyboard modes from original Oberheim FVS except REASSIGN
2,3 or 4 voice operation
Continuous or Reset poly mode
Split
Split Mode Mono - Poly or Poly - Mono
Unison
Freeze
2 x ADSR envelope per channel use for VCA and VCF Faux Vibrato LFO - Triangle wave offset added to Pitch Bend message
Adjustable Pitch Bend and Split Point
64 Patch Memories - recalled with MIDI Program Change
ADSR, Split, Pitch Bend range and LFO speed all saved
Requires MIDI Controller keyboard
All functions are controlled with CC numbers
MIDI IN and 2 unbuffered MIDI Outs 5 Volt versions are suitable for Behringer Model D, Pro-1, Cat and K210 Volt version best option for 2-XM
This is the stripped down version of the 2-XM controller
All keyboard modes from original Oberheim FVS except REASSIGN
2,3 or 4 voice operation
Continuous or Reset poly mode
Split
Split Mode Mono - Poly or Poly - Mono
Unison
Freeze
2 x ADSR envelope per channel use for VCA and VCF
Adjustable Pitch Bend and Split Point
64 Patch Memories - recalled with MIDI Program Change
ADSR, Split, Pitch Bend range and LFO speed all saved
Requires MIDI Controller keyboard
All functions are controlled with CC numbers
MIDI IN and 2 unbuffered MIDI Outs
This is the stripped down version of the 2-XM controller
CC Numbers
16 - Pitch Bend On/Off voice 1
17 - Pitch Bend On/Off voice 2
18 - Pitch Bend On/Off voice 3
19 - Pitch Bend On/Off voice 4
30 - Cont/Reset
31 - Split
32 - Split Mode
33 - Poly/Unison
34 - Freeze
35 - Filter track Off/Half/Full
37- Write Program
37- Write Program
40 - LFO Frequency
48 - No of voices 2-4
ADSR
53 - Attack
53 - Attack
54 - Decay
55 - Sustain
56 - Release
Pitch Bend Range (can be set on the fly using the sustain pedal)
Sustain pedal is used to select Split Point on the fly.
SYSEX - DUO Mode On/Off (can be changed in SynthTribe)
SYSEX - Trigger Modes (can be changed in SynthTribe)
SYSEX - Octave +/- (can be changed in SynthTribe)
Parts
The basic version just needs a Pro Micro plus a few components for MIDI in which can be easily mounted on the SIAM Modular prototype board.
10V versions need some op amps for voltage doubling.
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