Intellijel KORGASMATRON II Illustrated supplement by Demonam
Index 01... LP2 / 2-pole low-pass filter 02... LP1 / 1-pole low-pass filter 03... BP1 / 1-pole band-pass filter 04... HP1 / 1-pole high-pass filter 05... HP2 / 2-pole high-pass filter 06... BR1 / 1-pole band-reject filter 07... Dual 1V/Oct sine oscillator 08... Normalled inputs 09... SERIAL configuration 10... PARALLEL configuration 11... XFADE response - 01 12... XFADE response - 02 13... State-variable stereo filter 14... State-variable stereo filter - VC pan patch 15... 1-pole BAND-PASS filter patch 16..
LP2 / 2-pole low-pass filter Input attenuator IN A (and/or B) controls the level into the filter A (and/or B). set filter cutoff frequency For classic tone keep this below 12 oʼclock. set resonance self-oscillate past 1 o'clock Higher gain will suppress the resonance of the filter and change its tone.
LP1 / 1-pole low-pass filter Input attenuator IN A (and/or B) controls the level into the filter A (and/or B). set filter cutoff frequency For classic tone keep this below 12 oʼclock. set resonance self-oscillate past 1 o'clock Higher gain will suppress the resonance of the filter and change its tone.
BP1 / 1-pole band-pass filter Input attenuator IN A (and/or B) controls the level into the filter A (and/or B). set filter cutoff frequency For classic tone keep this below 12 oʼclock. set resonance self-oscillate past 1 o'clock Higher gain will suppress the resonance of the filter and change its tone.
HP1 / 1-pole high-pass filter Input attenuator IN A (and/or B) controls the level into the filter A (and/or B). set filter cutoff frequency For classic tone keep this below 12 oʼclock. set resonance self-oscillate past 1 o'clock Higher gain will suppress the resonance of the filter and change its tone.
HP2 / 2-pole high-pass filter Input attenuator IN A (and/or B) controls the level into the filter A (and/or B). set filter cutoff frequency For classic tone keep this below 12 oʼclock. set resonance self-oscillate past 1 o'clock Higher gain will suppress the resonance of the filter and change its tone.
BR1 / 1-pole band-reject filter Input attenuator IN A (and/or B) controls the level into the filter A (and/or B). set filter cutoff frequency For classic tone keep this below 12 oʼclock. set resonance self-oscillate past 1 o'clock Higher gain will suppress the resonance of the filter and change its tone.
Dual 1V/Oct sine oscillator filter A coarse frequency set filter B coarse frequency set make filter A self-oscillate make filter B self-oscillate filter A kind of fine frequency set filter B kind of fine frequency set filter A sine out 1V/Oct quantized CV filter B sine out sine A and B mix out in PARALLEL configuration 07
Normalled inputs FILTER A : IN A : Signal input to filter A. Patch a audio signal here to be filtered. The knob IN A attenuates this signal. This is normalled to the IN B input of filter B. FM2 A : CV input to VCF A filter cutoff, attenuated with inversion by FM2 A knob. Normalled to VCF B FM2. 1V/Oct A : CV input for filter frequency calibrated for 1V/oct standard. This is normalled to the 1V/Oct CV input of filter B. FILTER B : IN B : Signal input to filter B. Patch a audio signal here to be filtered.
SERIAL configuration Advice : If you are using the Korgasmatron II in SERIAL configuration inserting a plug into IN B jack will break the internal routing from filter A which may cause confusion.
PARALLEL configuration Use MIX output if the Korgasmatron II is in PARALLEL configuration and you want to mix the filters together to one output.
XFADE response - 01 UNIPOLAR signal input BIPOLAR signal input MANUAL set (no input) [0V/+...V] ADSR illustration [-...V/+...V ] triangle LFO illustration [CCW/CW] knob illustration +...V 0V B 1:1 +...V 0V B CW B 1:1 noon 1:1 -...V A -...V A CCW A +...V B +...V B CW A 0V 1:1 0V 1:1 noon 1:1 -...V A -...V A CCW B +...V B +...V B CW B 0V 1:1 0V 1:1 noon 1:1 -...V A -...V A CCW A +...V B +...V B CW A 0V -...V 1:1 A 0V -...
XFADE response - 02 UNIPOLAR signal input BIPOLAR signal input MANUAL set (no input) [0V/+...V] ADSR illustration [-...V/+...V ] triangle LFO illustration [CCW/CW] knob illustration +...V 0V B 1:1 +...V 0V B CW B 1:1 noon 1:1 -...V A -...V A CCW A +...V B +...V B CW A 0V 1:1 0V 1:1 noon 1:1 -...V A -...V A CCW B +...V B +...V B CW B 0V 1:1 0V 1:1 noon 1:1 -...V A -...V A CCW A +...V B +...V B CW A 0V -...V 1:1 A 0V -...
State-variable stereo filter Set the Korgasmatron in PARALLEL configuration. Use same LP-BP-HP-BR's switch position for A & B filters to set type of stereo filter. 2-pole low-pass stereo filter for this illustration.
State-variable stereo filter - VC pan patch Requires 2 bipolar VCAs. Set gain of VCA to +1 and VCA 2 to -1. In this patch, a positive offset patched at VCA 1 CV in & VCA 2 CV in down the amplitude of RIGHT out, while up amplitude of LEFT out. A negative offset patched at VCA 1 CV in & VCA 2 CV in up the amplitude of RIGHT out, while down amplitude of LEFT out. Use same LP-BP-HP-BR's switch position for A & B filters to set type of stereo filter. Low-pass stereo filter for this illustration.
1-pole BAND-PASS filter patch CUTOFF/BANDWIDTH set with A low-pass always > B high-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring band-pass filter at OUT B in SERIAL configuration. band-pass CUTOFF shift : Manually set A & B cutoff, with A low-pass cutoff always > B high-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
1-pole BAND-PASS filter curves MIX B - HIGH-PASS 1-pole FILTER cutoff HP1 MODE SERIAL - B OUT out A -LOW-PASS 1-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. LP1 MODE freq. freq. out B B out freq. out A freq. A B freq.
2-pole BAND-PASS filter patch CUTOFF/BANDWIDTH set with A low-pass always > B high-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring band-pass filter at OUT B in SERIAL configuration. band-pass CUTOFF shift : Manually set A & B cutoff, with A low-pass cutoff always > B high-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
2-pole BAND-PASS filter curves MIX B - HIGH-PASS 2-pole FILTER cutoff HP2 MODE SERIAL - B OUT out A -LOW-PASS 2-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. LP2 MODE freq. freq. out B B out freq. out A freq. A B freq.
1-pole BAND-REJECT filter patch CUTOFF/BANDWIDTH set with A low-pass always < B high-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring band-reject filter at MIX in PARALLEL configuration with 1:1 XFADE. band-reject CUTOFF shift : Manually set A & B cutoff, with A low-pass cutoff always < B high-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
1-pole BAND-REJECT filter curves MIX B - HIGH-PASS 1-pole FILTER cutoff HP1 MODE PARALLEL - 1:1 MIX OUT out A - LOW-PASS 1-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. LP1 MODE freq. freq. out B B out freq. out A freq. A B freq.
2-POLE band-reject filter patch CUTOFF/BANDWIDTH set with A low-pass always < B high-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring band-reject filter at MIX in PARALLEL configuration with 1:1 XFADE. band-reject CUTOFF shift : Manually set A & B cutoff, with A low-pass cutoff always < B high-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
2-pole BAND-REJECT filter curves MIX B - HIGH-PASS 2-pole FILTER cutoff HP2 MODE PARALLEL - 1:1 MIX OUT out A - LOW-PASS 2-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. LP2 MODE freq. freq. out B B out freq. out A freq. A B freq.
Asymmetrical BAND-PASS filter patch CUTOFF/BANDWIDTH set with A low-pass always > B high-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring band-pass filter at OUT B in SERIAL configuration. band-pass CUTOFF shift : Manually set A & B cutoff, with A low-pass cutoff always > B high-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
Asymmetrical BAND-PASS filter curves MIX B - HIGH-PASS 2-pole FILTER cutoff HP2 MODE SERIAL - B OUT out A -LOW-PASS 1-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. LP1 MODE freq. freq. out B B out freq. out A freq. A B freq.
Asymmetrical BAND-REJECT filter patch CUTOFF/BANDWIDTH set with A low-pass always < B high-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring band-reject filter at MIX in PARALLEL configuration with 1:1 XFADE. band-reject CUTOFF shift : Manually set A & B cutoff, with A low-pass cutoff always < B high-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
Asymmetrical BAND-REJECT filter curves MIX B - HIGH-PASS 1-pole FILTER cutoff HP1 MODE PARALLEL - 1:1 MIX OUT out A - LOW-PASS 2-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. LP2 MODE freq. freq. out B B out freq. out A freq. A B freq.
Dual BAND-PASS filter patch CUTOFF/BANDWIDTH set with A band-pass always ≠ B band-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring dual band-pass filter at MIX in PARALLEL configuration with 1:1 XFADE. dual band-pass CUTOFF shift : Manually set A & B cutoff, with A band-pass cutoff always ≠ B band-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
Dual BAND-PASS filter curves MIX B - BAND-PASS 1-pole FILTER cutoff BP1 MODE PARALLEL - 1:1 MIX OUT out A - BAND-PASS 1-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. BP1 MODE freq. freq. out B B out freq. out A freq. A B freq.
Dual BAND-REJECT filter patch CUTOFF/BANDWIDTH set with A band-reject always ≠ B band-reject CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring band-pass filter at OUT B in SERIAL configuration. dual band-reject CUTOFF shift : Manually set A & B cutoff, with A band-reject cutoff always ≠ B band-reject cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
Dual BAND-REJECT filter curves MIX B - BAND-REJECT 1-pole FILTER cutoff BR1 MODE SERIAL - B OUT A - BAND-REJECT 1-pole FILTER cutoff out A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. BR1 MODE freq. freq. out B B out freq. out A freq. A B freq.
(BP1 + LP1) filter patch CUTOFF/BANDWIDTH set with A low-pass always < B band-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring (BP1 + LP1) filter at MIX in PARALLEL configuration with 1:1 XFADE. (BP1 + LP1) CUTOFF shift : Manually set A & B cutoff, with A low-pass cutoff always < B band-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
(BP1 + LP1) filter curves MIX B - BAND-PASS 1-pole FILTER cutoff BP1 MODE PARALLEL - 1:1 MIX OUT out A - LOW-PASS 1-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. LP1 MODE freq. freq. out B B out freq. out A freq. A B freq.
(BP1 + LP2) filter patch CUTOFF/BANDWIDTH set with A low-pass always < B band-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring (BP1 + LP2) filter at MIX in PARALLEL configuration with 1:1 XFADE. (BP1 + LP2) CUTOFF shift : Manually set A & B cutoff, with A low-pass cutoff always < B band-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
(BP1 + LP2) filter curves MIX B - BAND-PASS 1-pole FILTER cutoff BP1 MODE PARALLEL - 1:1 MIX OUT out A - LOW-PASS 2-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. LP2 MODE freq. freq. out B B out freq. out A freq. A B freq.
(BP1 + HP1) filter patch CUTOFF/BANDWIDTH set with A band-pass always < B high-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring (BP1 + HP1) filter at MIX in PARALLEL configuration with 1:1 XFADE. (BP1 + HP1) CUTOFF shift : Manually set A & B cutoff, with A band-pass cutoff always < B high-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
(BP1 + HP1) filter curves MIX B - HIGH-PASS 1-pole FILTER cutoff HP1 MODE PARALLEL - 1:1 MIX OUT out A - BAND-PASS 1-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. BP1 MODE freq. freq. out B B out freq. out A freq. A B freq.
(BP1 + HP2) filter patch CUTOFF/BANDWIDTH set with A band-pass always < B high-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring (BP1 + HP2) filter at MIX in PARALLEL configuration with 1:1 XFADE. (BP1 + HP2) CUTOFF shift : Manually set A & B cutoff, with A band-pass cutoff always < B high-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
(BP1 + HP2) filter curves MIX B - HIGH-PASS 1-pole FILTER cutoff HP2 MODE PARALLEL - 1:1 MIX OUT out A - BAND-PASS 1-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. BP1 MODE freq. freq. out B B out freq. out A freq. A B freq.
(BR1 + LP1) filter patch CUTOFF/BANDWIDTH set with A band-reject always < B low-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring (BR1 + LP1) filter at OUT B in SERIAL configuration. (BR1 + LP1) CUTOFF shift : Manually set A & B cutoff, with A band-reject cutoff always < B low-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
(BR1 + LP1) filter curves MIX B - LOW-PASS 1-pole FILTER cutoff LP1 MODE SERIAL - B OUT A -BAND-REJECT 1-pole FILTER cutoff out A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. BR1 MODE freq. freq. out B B out freq. out A freq. A B freq.
(BR1 + LP2) filter patch CUTOFF/BANDWIDTH set with A band-reject always < B low-pass CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring (BR1 + LP2) filter at OUT B in SERIAL configuration. (BR1 + LP2) CUTOFF shift : Manually set A & B cutoff, with A band-reject cutoff always < B low-pass cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
(BR1 + LP2) filter curves MIX B - LOW-PASS 2-pole FILTER cutoff LP2 MODE SERIAL - B OUT A -BAND-REJECT 1-pole FILTER cutoff out A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. BR1 MODE freq. freq. out B B out freq. out A freq. A B freq.
(BR1 + HP1) filter patch CUTOFF/BANDWIDTH set with A high-pass always < B band-reject CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring (BR1 + HP1) filter at OUT B in SERIAL configuration. (BR1 + HP1) CUTOFF shift : Manually set A & B cutoff, with A high-pass cutoff always < B band-reject cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
(BR1 + HP1) filter curves MIX B - BAND-REJECT 1-pole FILTER cutoff BR1 MODE SERIAL - B OUT out A - HIGH-PASS 1-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. HP1 MODE freq. freq. out B B out freq. out A freq. A B freq.
(BR1 + HP2) filter patch CUTOFF/BANDWIDTH set with A high-pass always < B band-reject CV CUTOFF/BANDWIDTH CV CUTOFF/BANDWIDTH Monitoring (BR1 + HP2) filter at OUT B in SERIAL configuration. (BR1 + HP2) CUTOFF shift : Manually set A & B cutoff, with A high-pass cutoff always < B band-reject cutoff. Keep same relative knobs position for cutoff shift. OR/AND Input same CV signal in A & B FM 1 with same attenuation levels. OR/AND Use FM 2 normalled input and set FM 2 B as FM 2 A.
(BR1 + HP2) filter curves MIX B - BAND-REJECT 1-pole FILTER cutoff BR1 MODE SERIAL - B OUT out A - HIGH-PASS 2-pole FILTER cutoff A out B out A B freq. A freq. out out B A A B A B freq. out A B freq. HP2 MODE freq. freq. out B B out freq. out A freq. A B freq.
Heavy dub bass set bass frequency make filter A self-oscillate set past 12 o'clock for heavy bass filter A bass out bassline CV 47
Ping ! set ping frequency set just under filter A selfoscillation out filter A ping out time short A/D or trigger in A 48
Weird filter Advice : If you are using the Korgasmatron II in SERIAL configuration inserting a plug into IN B jack will break the internal routing from filter A which may cause confusion.
Spacewave sound set filter A coarse frequency set filter B coarse frequency slightly detuned with filter A make filter A self-oscillate make filter B self-oscillate XFADE input attenuator +...V B 0V 1:1 -...
Feedback loop Monitoring MIX output in SERIAL configuration.
Cross-FM Monitoring MIX output in PARALLEL configuration.
Feedback cross-FM Monitoring MIX output in SERIAL configuration.
Drone zone 1 Monitoring OUT B or MIX output in SERIAL configuration. Set filter B FM2 opposite to filter A FM2. Experiment with different cutoff, Q and Q-DRIVE values for both filters. OUT B for +V FM2 input CV : out +...V A B 0V freq. -...V OUT B for -V FM2 input CV : out A slow bipolar FM2 signal input B freq.
Expander - Overview set AUX MOD A AUX IN A level Q CV A level set AUX MOD B AUX IN B level Q CV B level 55
Expander - VC Q filtering Q CV A level Q CV B level Q CV signal filter A out filter B out signal in MIX out 56
Expander - Quad filter AUX IN A level AUX IN B level (AUX B + B) out AUX A signal in AUX B signal in (AUX A + A) out A signal in B signal in (AUX A + A) : (AUX B + B) out 57
Expander - Quad filter feedback loop Monitoring MIX output in SERIAL configuration.
Expander - Cross-Q modulation Monitoring MIX output in PARALLEL configuration.
Expander - Feedback cross-Q modulation Monitoring MIX output in SERIAL configuration.
Expander - Drone zone 2 Monitoring OUT B or MIX output in SERIAL configuration. Set filter B FM2 opposite to filter A FM2. Experiment with different cutoff, Q and Q-DRIVE values for both filters. B OUT : out AUX IN A level A B freq. B OUT for +V FM2 input CV : out A AUX IN B level B freq. B OUT for -V FM2 input CV : out A B freq.
