MATRIXSYNTH

SEQUENTIAL Circuits PROPHET 2002 SAMPLER SYNTHESIZER SN 0527

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Pics of the inside below.

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Casio KX-101 BoomBox Synthesizer

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You can find a couple of demos in previous posts featuring the KX-101 here.

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CASIO CZ-101 Digital Synthesizer Keyboard

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Sequential Circuits Six-Trak SN 1046

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Drum replacement in the 80s | Akai S700 audio trigger input

video upload by Espen Kraft

"Use the audio trigger input of the Akai S700 or X7000 to trigger samples live from any external source. A great way of playing live or as we did in the 80s when we had to replace drums from analog tape."

Featuring the Isla Instruments S2400.

EXPERT SLEEPERS | Lorelei - VCO Voltage Controlled Oscillator

video upload by DANIELE

"Lorelei is a versatile oscillator by Expert Sleepers with quadrature sine outputs, waveshaping and sync/cross-modulation options.

From the manual:

Cross-modulation/sync: in a common-or-garden ramp-based analogue VCO, oscillator sync works by resetting the ramp integrator based on the frequency of the syncing signal. Lorelei works quite diferently, though similar efects can be obtained. In Lorelei, the sync input essentially prevents the oscillator from oscillating when the input is above a certain voltage (around 3.3V), but this is not an on-of thing – the efect gradually applies as the voltage increases. The upshot of this is that smooth waveforms (e.g. sine or triangle) for the syncing input produce a diferent efect to, say, square or pulse waveforms. Also, when using a pulse wave as the sync input, the pulsewidth of the signal also afects the result quite drastically."