Yamaha CS-15 :: Sonic Death Factory

September 23, 2012 · Posted in Uncategorized 

Exploring the classic Yamaha CS-15, description of the synth below

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.

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