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Asteroid Mini User Manual

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Asteroid Mini Synthesizer Reference Manual.
Here is a picture of the module to make sure you got the right reference manual.
Asteroid Mini Synthesizer
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Format: Euro Doepfer compatible, 3U height (5.05")
Power Current Consumption: +108mA, -83mA
Depth: less then 45mm
Circuits involved: VCO, VCA, Envelope Generator, Sub Harmonic Generator, Noise Generator, and trigger
striking circuit.
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Asteroid Mini Specifications

General IconGeneral
EnvelopeADSR
WaveformsSquare, Sawtooth, Triangle
FilterLow-pass
LFO1
SequencerNo
ArpeggiatorNo
KeyboardNo
ConnectivityMIDI In

Summary

Asteroid Mini Synthesizer Overview

Module Specifications and Components

Details module format, power, and involved circuits like VCO, VCA, EG, Noise, and trigger.

Asteroid Mini Synthesizer Functionality

Block Diagram and Design Insights

Explains the module's block diagram and design choices, comparing it to Korg ER-1.

Asteroid Mini Synthesizer Control Panel

VCO Tuning and Envelope Decay

Covers Fine/Tune knobs for pitch and 1UF/9U4 switch for decay range.

VCA Control and Overdrive

Explains the VCA knob for gate control, linear curve, and overdrive.

Decay Knob Interaction

Details how the Decay knob directly affects the VCA.

Asteroid Mini Synthesizer Controls Explained

Modulation, FM, and Subharmonic Levels

Covers Mod VCA, Lin FM, Sub, Boost, and MOD FM inputs.

Delay, Sync, and Waveform Selection

Explains Repeat/Time, Sync, and Triangle/Sine wave switches.

Percussion Shaping and Modulation Depth

Details Pop knob for percussion and Depth knob for VCO modulation.

Noise Generator and Trimmer

Explains the Noise level knob and the internal trimmer.

Asteroid Mini Synthesizer Connectivity and Triggering

Noise and Waveform Output Selectors

Covers HPWN/WN, Noise/Square wave selection, and output level.

Envelope Generator and FX Mixing

Explains Decay knob range setup and FX level mixing with dry signal.

Audio and CV Input/Output Jacks

Details PCV, MIX, RCV/TCV/LCV, DRY/Perc, and Line Out jacks.

Triggering Mechanism Explained

Explains why trigger input is preferred over gate for percussive response.

External Module Integration

Integrating with External Filters

Guide on using the 'Sum' jack for external filter processing and 'EXT VCA' for return.