2.4 Filter
The filter of the EREBUS is a 2-pole 12db/octave pre-fed resonating Low Pass
Filter. Pre-fed means that it has a build in pre-resonant accent that it is
always active on the 1/6th of the filter’s total input gain and completely
independent from the normal resonance control, thus making the EREBUS a
much more aggressive and edgy synth. Resonating means that with the
resonance control at 100% you get a self-oscillation.
2.5 Amplifier
EREBUS’s amplifier has a build-in AR envelope generator. Notice that
when the output Level is at max you get 8V/pp, so be careful not to hurt
your ears or damage your speakers.
When one of the Oscillators is Off (when its dedicated wave switch is in the center position), the MIX
knob will not have any effect and the Oscillator that is ON will always be added to the Filter.
1. Both Oscillators Master Tune.
2. Oscillator 1 Wave selection.
Center position sets the Osc1 OFF
3. Oscillator 2 Detune.
4. Oscillator 2 Wave selection.
Center position sets the Osc2 OFF
5. Oscillator 1 Octave selector.
6. Oscillator 2 Octave selector.
7. Sets the Glide’s Rate for the Osc1 (portamento)
8. Sets the Glide’s Rate for the Osc2 (portamento)
9. Sets the Mix level between Osc1 and Osc2.
10. Hard syncs the Osc2 to Osc1.
1. Sets the Cutoff frequency of the filter.
2. Sets the Post Resonance amount.
Adding Resonance will drastically increase the synth’s output volume, due
to the nature of the Filter.
1. Master volume
2. Attack speed
3. Release speed
1
2
7
8
6
5
4
10
9
3
1
2
1
2
3
