Custom Modular System
Progress Shots


1976

Module Complement
921 Oscillator
921A Oscillator Driver
921B Oscillator
1
4
12
The 921B's were each modified with the addition of an LFO switch that allowed you to break the connection from the 921A while dropping the frequency a couple octaves and increasing the range of the front panel Range control. Also, the "CV In" jack was modified for exponential rather than linear response.
904A Lowpass Filter
904B Hipass Filter
904C Filter Coupler
3
3
3
The Low and High-pass filter panels were redesigned to fit one panel-width each. The Filter Coupler was incorporated on the High-pass panel, reducing the width of a complete bank from 6, down to 2 units.
914 Fixed Filter Bank
1
The 914 Filter Bank was modified with individual band outputs.
903A White Sound
905 Reverb
902 VC Amplifier
1
1
8
911 Envelope Generator
911A Dual Trigger Delay
912 Envelope Follower
8
3
1
Each Envelope Generator had both V & S-Trig Inputs with LED indicator. Also, a Regen switch was added to each that routed the output to the V-Trig Input, allowing it to be used as an LFO, with the waveshape and frequency determined by the Attack and Decay times.
984 4-Chnl Mixer
CP3 Mixer
Rev Attenuator
1
5
1
950 Keyboard
950B Scale Programmer
Switchboard
2
1
1
The scale programmer was modified to allow macro as well as micro-tonal scale tuning, and the panels were redesigned to run the length of the cabinet (bottom row). The Switchboard to the left of the keyboards was just a big mixer, an input for each key of the lower keyboard, and one output.
960 Sequencer
961 Interface
962 Sequential Switch
2
1
4
Frequency Follower
Frequency Shifter
VC Phase Shifter
Theremin Controller
Oil Can Reverb
Laryngeal Interface
1
1
2
1
1
2

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