EMS Synthi A (pre 74 filter)
The following is an effect-type patch often associated with early EMS synthi series instruments.
Oscillators:
Oct Osc1-8’ Osc2-8’ Osc3-2’
Wave Osc1-Tri, Osc2-Tri, Osc3-Tri
Freq Osc1-n/a, Osc2-0, Osc3+1.5
Mixer:
level Osc1-10, Osc2-0, Osc3-0, Ext-5.9
Osc1-On, Osc2-Off, Osc3-Off, Ext-On
Filter:
Freq-760Hz, Spacing-0, Res-8.5, KB Amt-0, Mode-LP/LP, A/B Poles- 18db
EG amt +3.6
Filter envelope:
Attack-3mS, Decay-10 sec, Sustain-0, Release-5 sec
Amplitude envelope:
Attack-3mS, Decay-10 sec, Sustain-), Release-3 sec, Env gate- Keyboard.
Mod Wheel Bus:
Source-Osc 3, Destination-Pitch, Shaping-On/PGM, Amount-7.8
Pedal Mod Bus:
Source-Osc 3, Destination-Filter, Shaping-On/PGM, Amount-0
PGM Shaping 1: Source-Keyboard CV, Offset Value- H=+63 L=+63.
LFO:
Rate-6Hz, LFO Sync-Off
LH Controller switches:
Glide-0 (off), Release-On
1>2 Sync-Off, 3>1 FM, Osc3 KB ctrl-On, Osc3 freq-Lo
Trigger-Multi, Key Mode-low note
Main Volume 6.8
Note:
Use mod wheel to alter speed of effect. Speed different across Keyboard.
Patch mixer feedback loop.
Try effect with spring reverb.