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DUSK
FILTER Knob:
Digital control over an
analog OTA based
12dB/Oct LPF
Mode Pushbutton:
CUT: Manual mode,
control filter with Filter knob,
Exp/CV, or MIDI.
ENV: Envelope mode, filter
responds to input dynamics.
LFO: Low Frequency Osc
mode, drive filter with 6
waveforms, tap in rate.
5 Pin DIN MIDI IN Jack:
Control all of Dusk's
digital features (Filter knob,
Modes, Alt features, Clock,
Multi and Bypass stomps,
and Presets with standard
MIDI CC and PC messages.
Multi Stomp:
CUT Mode: Hold for filter sweep.
ENV Mode: Hold to freeze filter.
LFO Mode: Press for Tap Tempo.
Hold to ramp rate down.
Input, Output, Power
9VDC, centre neg,
2.1mm x 5.5mm barrel,
.
150mA.
Multi Mode
Low Pass
Filter
Analog Resonance and
Volume controls. (Res
trimpot on PCB for fine
tuning of max feedback)
Alt Features Pushbutton:
CUT Mode: Slow, Med,
Fast rates for manual
filter sweep (hold Multi).
ENV Mode: Reverse
Direction of envelope
sweep, Up or Down.
LFO Mode: Choose from 6
waveforms for auto LPF.
1/4" Exp and CV Jack:
Use TRS cable for exp,
any resistance.
Use TS cable for
Bypass Stomp:
Press for True Bypass.
Hold to load and cycle
Through 4 on board
presets.
0-5V CV.
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Summary of Contents for Dr Scientist DUSK
- Page 1 LFO Mode: Choose from 6 waveforms, tap in rate. waveforms for auto LPF. 5 Pin DIN MIDI IN Jack: 1/4” Exp and CV Jack: Control all of Dusk's Use TRS cable for exp, digital features (Filter knob, any resistance. Modes, Alt features, Clock,...
- Page 2 MIDI messages. ENV is Envelope Mode, putting the dynamics of your playing in control of the filter setting. (There's a little blue trimpot on Dusk's PCB that you use to adjust the envelope sensitivity to your specific instrument. It's on the left side, lower middle,...
- Page 3 MIDI. The Expression/CV System – The 1/4” jack on the right side of Dusk is where you can plug in an expression pedal or a control voltage and have it take over for the Filter knob, controlling the setting of the filter.
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Page 4: Midi Implementation
Dusk Multi Mode Low Pass Filter MIDI Implementation Function Value Remote Tap Waveform Select 1 - 6 (0 becomes 1, >6 becomes 6) LFO Rate x 1 (in BPM) 0 - 127 LFO Rate x 2 (in BPM) 0 - 127 (x2) -
Page 5: Mode Led
PC# 0 = Bypass PC# 1 – 4 = Internal Preset # 1 – 4 PC# 5 – 99 = Presets saved with MIDI CC #55 MIDI Clock Controls LFO Rate MIDI Channel Reference Table Mode LED Waveform LED MIDI Channel Green Blue White...
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