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Yamaha | CS15

Description

This synth really has its own sound. The CS-15's got style. Built like a tank with a lot of nice knobs and best of all, not one but two of those funny sounding multimode filters. It's actually a duophonic / bitimbral synth but you have to connect it to CV (Hz/V like Korg not V/Oct) to get the extra voice. Each of the two VCOs has its own CV/Gate control.

The best things about it are the flexibility of the VCFs and the routings to the filters and envelopes. You can rout VCO 1 to both VCFs and the VCFs to any of the envelopes positive or negative voltage. The VCFs are 12 dB/Oct and are switchable between low, band or high-pass. They are the key to the nice sound of the Yamaha CS family. Other nice features are noise, external-in for processing other sounds, LFO with Sample & Hold for those bubbling sounds and an individual auto-bend for the VCOs.

The CS-15 is great for strange blips, bass and tiny highpass sounds. The ADSRs aren't as fast as the CS-10 but they are ok. A nice feature is the 'brilliance' slider that can control either or both VCFs. At their extremely low prices, the CS-15 is an analog that's definitely worth checking out for yourself. 

BrandYamaha
ModelCS15
DeviceSynth
TypeKeys
Engine TypeAnalog
EngineVCO
Voices (max)1/2
Oscillators2
LFO1 with triangle, saw and S&H waveforms
Engine Detailed2 VCO + white noise (Triangle, sawtooth, variable PW)
Filter (VCF)2 multimode (LP/BP/HP). Controlled by either or both ADSRs.
Envelope (VCA)ADSR
Keys37
Key typeKeys
VelocityN
AftertouchN
AudioExternal Audio in
CV-gateCV/Gate x2
Produced:1978 - 1983
Legend: Obvious Y: Yes, N: No, N/A: Not Applicable
VCO Voltage Controlled Oscillator DCO Digital Controlled Oscillator
LFO Low Frequency Oscillator Sub Sub Oscillator
VCF Voltage Controlled Filter VCA Voltage Controlled Amplifier
Velocity As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key. Aftertouch Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.
Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.

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