Moog-music Slim Phatty User Manual download pdf (Page 10)

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Slim Phatty User’s Manual - The Components

Page 13

Slim Phatty User’s Manual - The Components

Now let’s take a look at the individual module components that make up the Slim Phatty Synthesizer, start-

ing with the Oscillator section and moving right across the front panel, explaining the features and functions

of the Filter, Envelope Generator and Output sections. Then we’ll cover the Modulation section, the Input/

Output Back Panel, and the User Interface section.

A. The Oscillator Section

The Oscillators are the main sound source of the Slim Phatty. The oscillators in the SP are analog Voltage

Controlled Oscillators (VCOs) that feature a temperature regulation circuit that provides them with excel-

lent tuning stability. The SP’s VCOs can produce a total musical range of 9 octaves!

The Components

Oscillator One serves as a master oscillator to which Oscillator 2 is

tuned. The timbres of the oscillators are adjusted by their variable

waveform (WAVE) controls. There is also a switch for syncing Oscilla-

tor 2 to Oscillator 1, and a control for adjusting the glide rate which is

explained below.

The frequencies of the oscillators are controlled and affected by a

number of sources. The main control source is a ‘NOTE ON’ com-

mand transmitted from an external MIDI controller. The MIDI ‘NOTE

ON’ command is translated into a Control Voltage (CV) that allows

the oscillators to be played in an equal tempered scale. Adding to

that, the SP’s glide circuit can be switched on to slow the CV changes

between notes, resulting in portamento. The CV is then mixed with

the Octave switch CV, the Frequency offset control (Oscillator 2), the

Pitch CV In (if plugged in on the back panel), the ne tune control, and

the output of the Mod Matrix when the “Pitch” destination is selected.

Oscillator Section Controls:

Octave:

Each Oscillator has a switch labeled OCTAVE that selects the relative frequency range. To select the octave,

simply press the switch. Each press of the switch advances the setting, as indicated by the corresponding

LED. When the topmost octave is reached, the next button press cycles back to the lowest octave. The

panel markings 16’, 8’, 4’ and 2’ are octave standards based on organ stops. On the 16’ setting the highest A

on the keyboard is A440.

Oscillator Level:

Each oscillator has a switch labeled LEVEL that allows the analog edit control to adjust the oscillator level.

This allows you to control the relative strength of each oscillator in the mixer from 0 to 100%.

THE COMPONENTS

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Moog-music Slim Phatty User Manual Page 10