The MX-4S is a voltage controlled stereo mixer with four independent inputs. All parameters such as input gain, panning and output again ( both left and right channels output level are ganged) are controlled manually by knobs or associated CV inputs. The mixer accept both DC and audio signals so it can be used for audio signals and control signals. The LED bars displays the outgoing signals strength. The performances of the mixer such as low distortion and low noise, are superior thanks to ” the state of the art” voltage controlled devices.
両方のフィルターからのオーデイオアプトプットは、デュアルレゾナンス(ピーク、フォルマント形状のローパス、バンドパスモード)と(LPF A + BとB F A + B)を組み合わせています。フィルターは個別のオーディオインプットの他に(AUDIO A + B)インプットがあります。DMF-2は、インプットシグナルのレベル強度の影響を受けるノンライナートランスファー機能(non-linear transfer function)いわゆるサチュレーションモードを特徴とする。
*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
DMF-2 Dual Mode/Slope Filter
3U Eurorack module
16HP wide
20mm deep ( behind the front panel )
Weight 0.4 kg
power consumption: 40mA
How to use Cwejman Ribbon cable connectors
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
RES-4, four band voltage controlled parametric resonator
The RES-4 is a four band pass filters in to two outputs; BAND PASS and NOTCH. The BAND PASS is a sum of all four filters (RES1, RES2, RES3 and RES4) in phase and the NOTCH is a sum of filter1 (RES1) + fiter3 (RES3) in phase and filter2 (RES2) + (filter4 (RES4) inverted. The result of these two outputs is a different frequency response with differently positioned notches for the BAND PASS and the NOTCH.
All parameters (Peak frequency, Bandwidth and Level) can be controlled manually (knobs) or by CV inputs, individually for all four resonators. Additionally, peak frequencies and levels, for all four resonators, can be controlled by linked CV inputs (MASTER CV FREQ and LEVEL)
The RES-4 has two switchable modes: bandpass and notch and it even has a bypass switch.
The SPH-1 is a 14-stage stereo image phaser. It consist of two identical voltage controlled all-pass filters with seven notches stretched over the whole audio range which ensures constant phasing effect.
The all pass filters are combined with original audio signals resulting in an almost constant gain and phase shift of 2400 degrees across the entire audio range (see diagrams below).
Additionally, the phasing effect remain almost constant even in saturation mode.
Phasing (SPECTRUM) is controlled by modulating low frequency oscillator (MOD RATE, MOD LEVEL) and by external signals (SPECTRUM CV, and separate SPECTRUM LEFT, RIGHT).
The low frequency oscillator’s rate can be modulated by external signal (RATE CV, RATE CV INPUT).
The SPH-2 provides one audio input for both phasers labelled by SUM AUDIO.
The audio outputs are provided by output socket labelled AUDIO, LEFT, MIX (mixed left and right phaser) and RIGHT. Outputs are revealed by white surrounds.
The FEEDBACK knob controls the amount of multi resonance for both phasers up to self-oscillating.
The SPATIAL/ROTATING switch couples phaser between two different stereo images. The BYPASS/ L&R INPUT inserts both phasers in the audio chain in position L&R INPUT.
The main purpose with the frequency shifter is to make frequency shift up and down for processed audio signal. Two signal sources are needed; the carrier and the audio. Both carrier and audio signals are splitted in two chains and are pre-processed to accomplish 90 degrees phase shift between splitted signals.
The carrier generator has two frequency ranges; LF (low frequency) and AUDIO and it’s controlled by knobs
COARSE, FINE and external CV signals (CARRIER CV). The carrier generators outputs are pure sine waveforms with 90 degrees delay between them. Outputs are patched to both ring modulators inputs. Two ring modulators (dual balanced multipliers) receives 0 and 90 degrees shifted carrier and audio signals . The outputs from the multipliers are combined in two ways; the frequency shift UP and DOWN. The frequency shifted audio signal is a sum (UP) or difference (DOWN) of the carrier generators frequency (a pure sine waveform) and all audio signals frequencies (fundamentals and harmonics). The FSH-1 works in two modes; as frequency shifter and as dual ring modulator. A ring modulator is a classic audio effect device and due to the non-harmonic character of the output signal. It’s very useful to create metallic timbres such as bells, sweeping whistles and percussive sounds and tremolo effects. The obvious effect (particularly in LF mode) is a stereo panning effect of audio signal.
The VCA-4MX consists of four individual voltage controlled amplifiers.
All amplifiers are identical and work in a semi-logarithmic mode. Amplifiers accept both DC and AC signals. The VCA-4MX has eight outputs for maximal flexibility. All amplifiers has an individual output, two summing outputs for all amplifiers ( both normal and inverted ) and additionally two summing outputs for VCA1 + VCA2 and VCA3 + VCA4 .
The VCA-4MX can be used as quad attenuator ( using all four amplifiers separately), as a four input mixer ( using summing outputs ) and as two separate two inputs mixers.
All amplifiers has dedicated level controller (knobs) and CV inputs which controls outgoing signals attenuation in semi-logarithmic mode. The manual controllers (knobs) determinates the maximal amount of controlled gain ( or rather attenuation ). The semi-logarithmic transfer function is much
more practical than a true logarithmic because it’s imitates the natural behavior of volume controllers.