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Roland SH-101 Synthesizer

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Roland SH-101 Synthesizer (Grey)

The Roland SH-101 is a monophonic bass synthesiser manufactured in 1983 featuring a small 32 key keyboard with a simple arpeggiator and realtime sequencer. The sound is generated from one oscillator with three simultaneous waveforms – a triangle, a square/pwm and a square sub oscillator. There is also a pulse width control with a switch which allows you to modulate the square waveform using either the envelope generator or the LFO making it possible to create some really nice ‘chorused’ sounds. It also has a white noise generator. The OSC section also has a dedicated for controlling the amount by which the oscillator is modulated (vibrato). The three waveforms and the noise level are combined using the SOURCE MIXER.

The SH 101 has a dedicated LFO offering random, sine, square or noise waveforms. Also present is ‘Random’ – a Sample & Hold generator clocked at the LFO rate. The amount of filter modulation and pitch bend produced when moving the bender (left and right) can be set independently, as can the amount that pushing the bender away from you affects the LFO modulation. This allows some really expressive use of the bender to create subtle (or drastic) changes to your sounds as you play the keyboard. There is a knob for setting the portamento amount, with an ‘auto’ switch, which when set, will only apply portamento when two keys are held simultaneously. The filter is a 24dB-per-octave low-pass filter capable of self oscillation with control over cutoff frequency (FREQ), the resonance (RES), and the envelope amount (ENV) as well as variable controls for modulation (MOD) and keyboard tracking (KYBD).

Roland SH-101 (Red)

The SH-101′s has one four-stage envelope (ADSR) that is shared between the filter (VCF) and the audio (VCA). There is a switch to set whether this is triggered by the LFO or by the keyboard. The VCA has a switch to select either “Gate” or “Gate+Trigger” modes).  When choosing “Gate+Trigger” mode the ADSR affects both the VCF and VCA. In “Gate” mode the ADSR only affects the VCF.  When playing in “Gate+Trig” mode the keyboard has last-note priority, and triggers the envelope every time a key is pressed. When playing in “Gate” mode the keyboard has low-note priority, and will only retrigger the envelopes after all previous keys have been released. These options allow for different types of playing styles.

Connections include CV/GATE inputs and outputs and CV hold pedal. There is also external clock inputs for the arpeggiator and sequencer. A shoulder strap and a small handgrip (with a pitch modulation trigger and a pitch bend wheel) can be plugged into the side of the SH-101 so that it can be used as a “key tar”.

The SH-101 is available in three colors: grey, blue, and red.


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