Cwejman Modules

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VCO2-RM
D-LFO
ADSR-VC2
DMF-2
VCA-2P

"The 2RM is equipped with seven waveforms, LFO mode, sync and waveform outputs are routed to a DC coupled ring modulator (RM). The oscillator's frequency is controlled by COARSE, TUNE knobs and FM inputs. TUNE finetunes the oscillators (± 6 semitones).
Frequency modulation (leveled FM1, FM2 and FM3 ) determinates the intensity of frequency modulation and/or pitch control. All FM inputs are carefully calibrated for 1Volt/octave sensitivity. Frequency modulation, by an audio signal, creates so called "side-bands" that consist of sum and difference of signals frequencies.
These additional frequencies do mostly have a non harmonic sound. Modulation, by low periodic waveforms, such as LFO or envelope generator creates momentary pitch shift of modulated oscillator common named vibrato (by LFO) or pitch bend (by envelope generator).
SYNC means that sync'ed oscillators frequency is tracked by the frequency of controlling oscillator;
OSC2's frequency is syncronized to OSC1's frequency. When the tuned frequency of sync-ed oscillator has the same or multiple of frequency of controlling oscillator then sync-ed oscillators waveform has no or very little "glitch" which results in a sync-ed smooth waveform (sinus waveform). The sync-ed waveforms (with additional FM modulation) are perfect for cutting edge lead sound and hard, funky basses.
PULSE WIDTH % adjusts the pulse width of the pulse wave from 5% to 95%.
WAVEFORM selects the waveform or a mix of waveforms from an oscillator. PULSE WIDTH control works also on the waveform mixes where the pulse wave is included.
Ring modulator (RM) is a classic audio effect device and due to the non harmonic character of the output signal, very useful to create metallic timbres such as bells, sweeping whistles and percussive sounds and tremolo effects (modulated by low periodic signal like a LFO). Two input signals are pre-patched to OSC1 and OSC2 outputs. Using the inputs X and Y, any other external signal can be routed directly into the ring modulator. As modulation source the ring modulator can produce a huge amount of complex waveforms both in the low and audio frequency range."

"The D-LFO consists of two identical low frequency oscillators. The LFO2 can be internally sync-ed to LFO1 by an internal switch. The TRIP POINT control the voltage point at which the waveform is sync-ed; continuously from lowest to highest point of the waveform. Additionally the external signal can be used as sync source in two modes; the SYNC T converts the external signal to a very narrow pulse for a distinct sync and the SYNC G extract pulse width of the external signal for sync with a "steady state" sync-ed waveform. The RM/AM is a ring modulator / amplitude modulator. It is coupled to both LFO's outputs and has a separate output "RM-AM" and input for external signal (pre-patched to the LFO2's output)."

"Both envelope generators are identical and provide control voltages that can be used for dynamic change of all voltage controlled parameters, such as; frequency, amplitude, pulse width, cutoff.
The most common use is controlling a filters cutoff frequency and a voltage controlled amplifiers amplitude in order to achieve dynamic timbre- and level-changes. All parameters such as attack time, decay time, sustain level, release time and output level are voltage controlled."

"The DMF-2 is a dual mode and dual slope filter and emulates the familiar low pass filter in 4 pole mode and expands sonic potential by adding a unique designed 6 pole low pass mode and quasi and pass mode.
Both filters (A and B) are identical and can be controlled separately and by master inputs for the cutoff (CM A+B). The audio outputs from both filters are combined (LPF A+B and BPF A+B) with dual resonance (peak and offers "formant" shaped sounds in low pass and band pass mode. Filters has an individual audio inputs and additionally combined input (AUDIO A+B).
The DMF-2 is characterized by a non-linear transfer function, so-called saturation mode, that is affected by the level strength of the incoming signals. The design quality of LPF's and new features makes the DMF-2 very flexible and results in qualities, such as:
*CUTOFF, Q-PEAK are voltage controlled
*4 and 6 poles low pass mode (24 dB/octave and 36 dB/octave)
*Qasi band pass mode (6dB/octave high pass on the low side and 24dB/octave
low pass on the high side)
*Saturable; from "warm" and "smooth" sound (at low to moderate level of
incoming signal) to heavy distorted "nasty" and "aggressive" (at high level of
incoming signals)
*Ideal as "effect filter"
*Formant mode (dual peak) with summed inputs and outputs
*Stereo effects
*Low noise"

"The VCA-2P is a stereo (dual channel) voltage controlled amplifier. VCA LEFT and VCA RIGHT can work in linear or logarithmic mode. The panning VCA can be coupled as panning VCA between VCA LEFT and VCA RIGHT (PAN switch in position "IN" and controlled manually by knob and/or by signal inserted to LEVEL CV, PAN input) or as an stand-alone dual voltage controlled amplifier (PAN L, PAN R). The pannig VCA's are different from main VCA's in the sense that amplitude modulation acts with both positive and negative control signal and around zero.
The depth of amplitude modulation is dependent of amount of controlling signal. The left and right VCA has an build-in BLEND function; in position "0" the signal is not affected by level controls and successively in position "10" the amplifier is fully controlled (greatest dynamic range) by LEVEL CV controls.
The VCA LEFT and VCA RIGHT are controlled by CV LEVEL signals inserted to inputs AMOUNT (left and right) and LEFT (VCA LEFT) and RIGHT (VCA RIGHT). The AMOUNT (actually another two VCA's) controls the amplitude of LEFT and RIGHT control signals. An example; the envelope generators amplitude, inserted to the LEFT or RIGHT, can be controlled by another positive going signal inserted to the AMOUNT inputs."