Synth Glossary

Filter:: A filter filters out certain frequencies in the sound. There are four main types: a low-pass, high-pass, band-pass and notch, which are covered elseware in the glossary. Filters have two controls - the frequency control selects at which frequency the filter should start operating and the resonance control creates a peak just before the bit where it starts filtering out frequencies. This is used to create acid-type sounds....

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The Solus is a 2 VCO, monophonic analog synthesizer with a 3-octave, 37-note (C-C) keyboard. It, like most ARP synths, features mostly sliders instead of knobs. It was built into a flight-case, with all of its inputs and outputs on the inside of the case lid.

Both VCO's feature a slider selecting variable waveforms from sawtooth to pulse, as well as a slider controlling pulse-width and the amount of pulse-width modulation. VCO2 is syncable to VCO1 and can be detuned. The pulse-width can be modulated by the LFO or the ADSR. The VCF (four-pole, lowpass filter) has controls for frequency, resonance, as well as three sliders controlling modulation amount from the keyboard, the LFO, and the ADSR. It also features a digital ring-modulator and a pitch-bend knob. The back panel features interfaces (in and out) for CV, Gate, and Trig. Also in the back is a footpedal input and External Audio input, as well as high and low outputs.