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Slim Phatty User’s Manual - The Basics
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Slim Phatty User’s Manual - The Basics
The Slim Phatty (SP for short) is a monophonic analog synthesizer that is a descendant of the classic Minimoog
Model D. The SP features 2 ultra-stable oscillators, a genuine Moog 24dB/Octave low pass filter, two 4-stage
analog envelope generators and a flexible modulation matrix. The SP’s front panel has four variable-function
edit controls for real time adjustment of the Modulation, Oscillator, Filter and Envelope Generator parameters,
plus dedicated controls for Fine Tuning, Octave Switching, Glide, and Volume. The User Interface section has
the controls for Preset selection and management, adjustment of global parameters, and System Exclusive MIDI
function and utilities. The SP features 100 factory preset sounds, which can be modified or replaced by your
own sounds.
Here’s a brief description of the front panel components.
Front Panel:
1. The LCD display and User Interface - provides controls to access the presets, the arpeggiator, and
other software functions. The Fine Tune control is located here, along with switches for Glide On/Off
and Octave transpose.
2. The Modulation section - features a programmable modulation matrix. The Modulation section has
controls to select the modulation Source (LFO Triangle, LFO Square, LFO Sawtooth, LFO Ramp,
Filter EG or Oscillator 2) the LFO Rate, the modulation Destination (Pitch, Filter, Waveform or
Oscillator 2) and the modulation Amount parameters. Pressing and holding the AMOUNT switch
enables the MODULATION control knob to act as a MOD WHEEL control.
3. The Oscillators section - features two analog oscillators, each with individual Octave, Level and Wave-
form controls. Additional controls are provided for tuning the second oscillator relative to the first,
setting the Glide Rate, and engaging Oscillator Hard Sync. The oscillator outputs are summed together
along with the External Audio Input and routed to the Filter section.
4. The Filter section - features the classic Moog 24dB/Octave ‘ladder filter’, and includes controls for
adjusting Cutoff Frequency, Resonance, Keyboard Amount, Envelope Amount, and Overload. The output
of the Filter is routed to the output Voltage Controlled Amplifier (VCA), which is controlled by the
Volume Envelope Generator.
Overview and Features
