Grp Synthesizer - Output Module

Four Channel Output Mixer
Ins 1,4 freely pannable L-R
Ins 2,3 hard pannedl full L-R
Stereo Main Out w sep Levels and Vu-Meters.
Two Phones Out with adjustable Volume
Panel Width: 16 HP
+12V =…

Grp Synthesizer - VCO

Oscillator w Sine, Triangle, Saw,Pulse Sub octave (-1/-2)
Octave 64’-2’,three CV In; PW/PWM w CV in
Hard Sync , FM2 bus Exp/Lin
Panel Width: 10 HP
+12V = 60mA
-12V = 50mA
+5V = 0mA

Manual

Grp Synthesizer - VCF 24dB Low Pass

Transistor Ladder Filter w 1-4 poles LP and SELECT aux out
Two audio in (one adj) and two CV In (one adj)
Cutoff, Res, w Automatic Gain Change and ext CV in
Distortion, Amt Res CV In
Panel…

Grp Synthesizer - VCA

Amplifier with selectable Lin/Exp resp..
Audio Input w adj level, Initial Gain and CV1 attn..
Two CV Ins, two Outs w standard and rev polarity
Panel Width: 6 HP
+12V = 10mA
-12V = 12mA
+5V = 0mAManual

Grp Synthesizer - S&H Noise

Sample & Hold wint Noise Generator Int/Ext clock source
Input Level, Glide Amount and Internal Clock Rate
Noise Generator has White, Pink and Low Freq Noise
Panel Width: 6 HP
+12V = 15mA
-12V =…

Grp Synthesizer - Multi

Three multiples with 4, 6 and 4 connections
Panel Width: 4 HP
+12V = 0mA
-12V = 0mA
+5V = 0mAManual

Three-channel Audio/CV Mixer
Each one w Input Level
Main Out Level and dual output, with standard and inv polarity
Panel Width: 6 HP
+12V = 10mA
-12V = 10mA
+5V = 0mAManual

Grp Synthesizer - Fixed Filter Bank

Twelve BP filters, one HP, one LP at spaced cutoff frequencies
Panel Width: 16 HP
+12V = 62mA
-12V = 60mA
+5V = 0mAManual

Grp synthesizer - Envelope Follower

CV and Gate extraction from audio signal with Line/Mic selectable level
There is a pre-amped audio signal output
Panel Width: 6 HP
+12V = 18mA
-12V = 20mA
+5V = 0mAManual

Grp Synthesizer - ADSR

Four stage Envelope Generator
Three time ranges selectable
Gate In and Trig In. Gate In available at Thru Output
Two outputs with standard and inv CV Polarity
Panel Width: 6 HP
+12V = 12mA
-12V = 10mA
+5V =…

Grp Synthesizer - 12dB SVF

State Variable Filter with:
12db HP; Two pole high pass filtering.
6db BP; One pole band pass filtering
12db LP; Two pole low pass filtering
NOTCH; One pole band reject filtering
auxiliary Select Out;…

Grp Synthesizer - Dual LFO

Two Low Frequency Oscillators
Each with 3 selectable freq ranges
Dedicated outs for ramp-triangle-saw and pulse-square waveforms
Panel Width: 6 HP
+12V = 12mA
-12V = 10mA
+5V = 0mAManual