Yamaha CS-40m

Yamaha CS-40m Image

The CS-40m is a duophonic (2-voice) analog synthesizer that was introduced in 1979. Although Yamaha had already conquered polyphony with their legendary 8-voice CS-80, the CS-40m offered a more affordable approach to something other than a mono-synth. It has a semi-compact 44 note (3 1/2 octave) keyboard, 36 knobs, 12 sliders and over a dozen buttons for easy hands-on performance and editing. There are also 20 patches of memory which can be off-loaded to cassette tape.

The CS-40m certainly isn't as phatt as the CS-80. In fact, the CS-40m is more like a 2-voice version of the CS-20m. Like most CS-series synths the CS-40m has two analog oscillators per voice. Triangle, sawtooth, and square (pulse) waveforms are available on each oscillator, plus there is a noise generator. There is also a simple AR (attack/release) envelope generator for each VCO.

The CS-40m has a multi-mode VCF (filter) switchable between lowpass, bandpass, and highpass filtering. Basic filter cutoff and resonance controls are here, but the filter's resonance can't be driven to self-oscillate. It does, however, have its own ADSR envelope generator for nice sweeping filter effects. There is a basic LFO (Low Frequency Modulator) for modulating the VCO, VCF or VCA. All these classic controls and features and sounds... you would expect wood panels... and there are! The CS-40m has been used by Electronic Dream Plant, Sneaker Pimps, Ultravox, Duran Duran, and Vangelis.

Lookup Yamaha CS-40m Prices

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15 Visitor comments
Jeremy
April 15, 2013 @ 6:23 pm
Hey Delzep,
If you still have the CS-40M and are willing to sell it for the price mentioned please throw me an email: jeremymuehling@sbcglobal(dot)net
Pat
January 9, 2013 @ 9:14 am
@delzep lol. Classy.
delzep
September 26, 2012 @ 7:00 am
@"I am looking to sell a CS-40m that is in great working condition. It was recently serviced. If anyone has an idea of what these are worth please email me."

about 100€. Its your lucky day though, I'll give you 200.
Christian Thompson
September 9, 2012 @ 11:35 pm
I am looking to sell a CS-40m that is in great working condition. It was recently serviced. If anyone has an idea of what these are worth please email me.

christian@newcastleproaudio.com
zaiusz
April 21, 2012 @ 12:37 am
This thing is a secret weapon... enormous bass, soft pads, superb buzzy multimode filter. Excellent for modern bass heavy electronic music. One thing I really enjoy with this one, using a guitar synth with a midi/cv converter. By setting one of the voices to low note and the other to high note priorities using say a pro2000, slowly strumming a chord sounds incredible; like nothing I've ever heard. The low note always stays low but as you strum up the other note glides higher and higher.

I've made sure to keep this one in my arsenal due to it's unique sound and flexibility. 5/5
 
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  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Demos & Media
  • YouTube Thumbnail
    Yamaha CS-40M
    by analoguecrazy4

    Manual - Download the original owner's manual from SoundProgramming.net.

  • Specifications
  • Polyphony - (2-voices) Duophonic
  • Oscillators - 2 VCO's + noise gen. Triangle, Sawtooth, Square (Pulse) waveforms.
  • LFO - Waveforms: sine, up-ramp, down-ramp, square, and sample-and-hold.
  • Filter - multimode: Low-, Band-, High-Pass w/ cutoff, resonance, and ADSR envelope controls
  • VCA - ADSR (x5 switch)
  • Arpeg/Seq - None
  • Effects - None
  • Keyboard - 44 keys (3 1/2 octaves)
  • Memory - 20 patches via 2 banks of 10 presets; external cassette interface
  • Control - CV/Trigger outputs for each voice and CV inputs for portamento, sustain, brilliance, volume and filter.
  • Date Produced - 1979 - 1986

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