Cwejman S1 MK2 Manuale Utente

S1 MK2 User’s Manual(Guide/Handbook)

6Now begin to experiment:- Turn the FILTER MIX knob in the MASTER AMP section in position LPF or MMF to hear signals of all oscillators.- Change

7This allows you to individually modulate the frequency of each of oscillator and the master controller just by moving the FM LEVEL knobs in the oscil

8Master modulation level1 millisecond to 10 seconds, 5 octave range-3 to +3 in one octave steps±3 semitones.Low-Pass Filter frequency corner tuning; a

9OSCILLATORSThe Oscillators (OSC1-3) are the main sound sources of the instrument. They are identical, except to their pre-patched frequency modulatio

10OSCILLATORS CV INPUTSThese input sockets provide the use of external signals for amplitude (AM)- and pulse width modulation (PWM).The LEVEL inputs p

11CV, LEVELAmplitude modulation input, ± 5 Volts wave @ 5Volts input CV.CV, PWMPulse width modulation input, 5% pulse width/ 1Volt input CV.MixerThis

12Ring ModulatorA ring modulator is a classic audio effect device and due to the non harmonic character of the output signal, very useful to create me

13LFO, Low Frequency OscillatorThe LFO provides a sub-audio signal for modulation purposes. It is used to achieve periodic modulations like sweeps, vi

14Audio mixer for oscillator 1, 2, 3, ring modulator and pre-patched multi mode filters output. The output signals of the three oscillators, the ring

15FiltersThe most important sound shaping device of every substractive synthesizer is the filter. It cuts off specific and adjustable frequency ranges

Table of contentspageCertification... 1Warranty and Assista

16FUNCTIONSCUTOFF controls the filters cutoff- (or corner-) frequency.POLE selects between 4 pole low pass, quasi band pass (that sounds different tha

19CUTOFFFrequency corner; 16 Hz to 16 kHzQ-PEAKFlat to self-oscillationPOLES4/6 poles (24/36 dB/octave) and additional BAND-PASS mode CM; CUTOFFMODUL

18FUNCTIONSCUTOFF controls the cutoff- (or corner-) frequency of the filter from 16Hz to 16kHz.POLE selects between 2, 4 and 6 pole configuration for

19CUTOFFFrequency corner; 16Hz to 16kHzQ-PEAKFlat to self-oscillationPOLES2/4/6 poles (12/24/36 dB/oct) @ low-pass and high-pass mode2/4/6 poles (6/12

20The envelope generators provide control voltages (CV's) that can be used to dynamicy change of parameters, such as; frequency, amplitude, pulse

21The envelope generators provide control voltages that can be used to dynamically change timbres. This section provides the output stage of the S1. T

22AUDIO,FILTER MIXMix control for Lowpass Filter andMulti-Mode Filter audio output.AUDIO,OVERDRIVEOverdrive control from clean to full saturatedaudio

REAR PANEL23

MIDI INTERFACEMIDI IN (and programming), MIDI OUT (only program verification)and MIDI THRUMIDI OUTPUTSCV1 Fixed: main tune, 0 to 10 Volts (10 oct

Oscillator 2 and 3:1. Repeat the procedure as for Oscillator 1, using one of the other oscillators as reference.MASTER SCALEThis procedure tunes the e

Reset Message Received... 29CV Gate/Trigg Configuration...

MIDIGeneralThe MIDI interface is a so-called MIDI to CV & Gate/Trigger that converts MIDI messages toanalog control voltages (CV) and Gate/Trigge

Gate1 activates Envelope Generator 1 (with fixed connection to Gate1) and/or EnvelopeGenerator 2. The selection is made by MASTER CONTROLLER selector

CV2FunctionCV2 is preprogrammed for Note-On Velocity but can be reprogrammed, see the followingsection Functions for CV Outputs. CV2 is pre-patched f

How MIDI Messages are HandledProgram ChangeProgram Change messages with patch #01 restore the parameter settings to their defaultvalues. A currently

Settings for CV OutputsCV Output 1 is always Pitch Out and it is not possible to use it for anything else.CV Outputs 2-5 can be programmed to react to

Example 2:The CV2 Output Range is set to 32 as default. To change this to 64 for a 200% range instead dothe following. Presume that the instrument h

Table 1, Parameter ValuesParameter FunctionNRPN FineValue(NRPNCoarse = 0)Data EntryCoarse ValueCommentBase Note 01 0-127, default is 24Lowest possible

Upgrading SoftwareSoftware in the S1 CVGate interface can be upgraded via MIDI.Software is upgraded via a programmer software that runs on any Windows

34INSIDE THE SYNTHESIZERThe S1 synthesizer is an analog instrument (not including the MIDI Converter of course). Mostparameters such as frequency, am

35In other words the sine wave has its own character, it sounds nearly clean but it can change its timbre by, e.g.a filter sweep (dynamic) or by a fil

CERTIFICATIONCwejman certifies that this instrument was thoroughly tested and inspected and found tomeet its published specifications when it was ship

36Pulse WaveformThe pulse wave is another classic waveform with variable pulse width and contains very strongovertones. Unlike the sawtooth wave the

For example, if the pulse with 33% pulse width is modified by the Multi-Mode Filter (Highpass mode, Q- peak = 7) in series with the Lowpass Filter (Q-

28OSCILLATOR2 SINUS out, FM+AM(OSC1/SAW)+SYNC3.00 4.00 5.00 6.00 7.00 8.00Time (milliseconds)OSCILLATOR2 FM(OSC1-SAW)+SYNC, 0SC1 & OSC2 SAW outOUT

Even though these waveforms do not look like noise, they are synthesized noise. By frequencymodulating the oscillators in a ring a multitude of signa

RING MODULATOR, INPUTS; OSC2/SIN & OSC3/SIN OUTPUT (Volts)5.02.50.0-2.5-5.0-7.53.00 4.00 5.00 6.00 7.00 8.00Time (milliseconds)7.5RING MODULATOR,

The illustration below shows the suppression of square wave overtones in the LPF.Q-peak affects the amplitude of the corner frequency from flat to sel

LOWPASS FILTER (6 POLE MODE), SELF-OSCILLATION MODE, MODULATED by LFO/SAW OUTPUT (Volts)5.02.50.0-2.5-5.0-7.5100 200 300 400 500 600Time (milliseconds

dBV rms0.0-10.0-20.0-30.0-40.0-50.0-60.0-70.0-80.0-90.01.0k 3.0k 5.0k 7.0k 9.0k 11.0k 13.0k 15.0k 17.0k 19.0kFrequency (Hz)LOWPASS FILTER, OSC1/SQR WA

MULTI MODE FILTERThis filter has musical characteristics that differ from the Low Pass Filter. It has low pass, high pass andband pass mode and is li

MASTER AMPLIFIERAttenuation in the voltage controlled amplifier (VCA) is controlled by Envelope Generator 1 and 2 viathe panning mixer (ENVELOPE MIX)

Before Using this SynthesizerChecking AccessoriesUpon receipt of this instrument, run the checks shown below:Run visual checks against any and all dam

ENVELOPE GENERATORSBoth envelope generators are identical and provide control voltages that can be used to dynamic change of all voltage controlled pa

LFO'sThe Low Frequency Oscillator (LFO) can be used as modulation sources of all voltage controlled parameters, such as; oscillators frequency, p

48The illustration below shows the output signal and distortion just below the clipping limit, and theclipped output signal and accompanying distortio

Safety SymbolsThe WARNING sign denotes a hazard. It calls attention to a procedure, practice or the like which, if not correctly performed or adhered

The S1 is a semi-modular, analogue monophonic synthesizer. It is easy to get started with since it is pre-patched for optimal use of its sound produci

5CALIBRATIONOSC1, OSC2, OSC3, SCALE; 1 Volt/octaveOSC1, OSC2, OSC3, RANGE; ’RANGE’ octave stepsMASTER, SCALE; general scale sensitivity calibrationMA