User Guide

7
GRANDMOTHER OVERVIEW
Grandmother is a sonic playground that harkens back to Moog’s modular roots, where synthesis is not
only about the end result, but also the journey of discovery and experimentation. While capable of
highly complex sounds and modulation, Grandmother’s semi-modular design requires absolutely no
patching, ensuring that human beings of any skill level can easily explore and experience the joys and
magic of analog synthesis.
Inspired by the classic Moog modular synthesizers that came before it, Grandmother’s sound engine,
modulation engine, and onboard spring reverb tank are completely analog, resulting in an unrestricted
sonic vocabulary of immeasurable beauty and power. In addition, Grandmother also features an easy-
to-use Arpeggiator and Sequencer for added enjoyment and programmable syncopation.
Though not required, creative patching and exploration are the keys to discovering exciting new
relationships between modules and to truly unlocking Grandmother’s innite expanse of auditory
inspiration. Patching can also be used to override internal connections, allowing each section to
function just as an independent module would.
In addition to its standalone function, Grandmother is also an ideal analog audio processor for external
sound sources, and a powerful keyboard front end for expanding a Mother-32, DFAM, or any Eurorack
modular system.
PERFORMANCE
32-note keyboard with arpeggiator
and a 256-note sequencer with
three sequence locations
SOUND SOURCES
Two voltage-controlled oscillators
with hard sync and a white noise
generator
ANALOG EFFECTS
6” spring reverb tank
SOUND BLENDING
3-channel mixer with an additional
1/4” external audio input
SOUND SHAPING
Classic 4-pole 10Hz to 20kHz
Ladder lter and a patchable
1-pole high pass lter
UTILITIES
Patchable 4-point mult and a
bipolar attenuator
DYNAMICS
Analog ADSR envelope
MODULATION
Wide-range analog LFO
with Sync input and a
Sample/Hold output
PATCH POINTS
41 patch points with 21
inputs and 20 outputs
32’
16’ 8’
4’ 16’
8’ 4’
2’
20Hz 20kHz
200Hz 2kHz
+
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0
+
-
+
-
SPRING REVERB
MOD