From Organ to Synthesizer: The Evolution of the Yamaha Electone
- Thom Holmes

- Oct 5, 2024
- 7 min read
My Podcast: The Holmes Archive of Electronic Music
My blog for the Bob Moog Foundation.

I’ve been fascinated by home organs all my life. My mother played a Wurlitzer back in the day and when it came time for me to take some keyboard lessons, I took them on the organ. But that’s another story.
In this episode, I want to share with you recordings dating from 1963 to 1991 of the Yamaha Electone organ. The Electone began as a home organ back in the fifties to compete with the likes of Hammond, Thomas, Wurlitzer, Conn, Baldwin, Lowrey, Farfisa and others. By the 1970s, with the introduction of synthesizers, many of these companies found their organ sales withering and dropped out of the market. Yamaha, on the other hand, engineered a way to transform their Electone home organ into several more advanced stage and theater models. By the mid-1970s, Yamaha had as many as sixteen models available at the same time, each with a particular tweak for the targeted market. Some of these models incorporated features of synthesizers, while some did not. One thing was certain, no matter what the particular model, the Electone became one of the world’s leading organs, sitting alongside Hammond. But the sound was different than the Hammond and was not produced using the classic tone-wheel, electromechanical methods. From its beginning, the Yamaha always used electronic oscillators. That shouldn’t be surprising because all makers were producing organs with integrated circuit boards by that time. What seemed to work for Yamaha was its development of hybrid machines that were partly home organ and partly synthesizer.
How is the technology of a home organ different than that of a synthesizer? Home Organs generally have all preset voices, they are polyphonic, include limited audio filtering of the overall sounds, and usually have built-in speakers in their cabinets. Home organs are less versatile for modifying the preset voices, usually creating a new sound by filtering out other parts of the preset sound—something called divide-down circuitry.
Synthesizers, on the other hand, create the basic waveforms such as sine, square, sawtooth, triangle, pulse, and white noise that are then manipulated to create an infinite variety of sounds, often unique to person who programs the patches. Of course, most synthesizers come with an abundance of preset sounds as well, but unlike the voice on an organ, you can tweak every aspect of the sound on a synthesizer. Synthesizers also provide different methods of sound synthesis, such as subtractive synthesis, FM synthesis, wavetable, and granular synthesis, allowing for much more flexibility in creating both natural and abstract sounds.
In the case of Yamaha, in 1977 they introduced what was called the Pulse Analog Synthesis System, commonly referred to as PASS. This was way to bridge the gap from home organ technology to synthesizers while actually preserving both product lines, using PASS as needed for home or stage organs. Their models began to have a synthesizer section that could be called upon, or even one or two keyboard manuals dedicated to those features. They used this technology to bridge the gap from pure analog synthesizers to synthesizers using digital control of analog sounds, to fully digital instruments in the 1980s. We will hear examples of most of these transitional products in this episode. One that you won’t hear is the Yamaha GX-1, the space age looking 800-pound stage organ used by a few notable artists, including Led Zeppelin. But we will hear from some lesser known Yamaha artists who were experts on these hybrid organs, the EX-42 with its similar space age design plus Electone models E-70, E-75, the CS-80, and 7000, all making an appearance from about 1970 to 1982. I tried to pick selections that either showcased the home organ or synth features of the given model of Electone. I hope you will be surprised by some of what you’ll hear.
For more history about the Electone, and there is plenty, I’ve provided a couple of links on the podcast website under the playlist that you might like to explore.
Episode 134
From Organ to Synthesizer: The Evolution of the Yamaha Electone
Playlist
Opening background music: Hidemi Saito, Tadashi Yoshida, side 1 from Enchanting Mood (Electone Sound) (1963 Nivico). Composed by Tadashi Yoshida; Electone organ, Hidemi Saito. Used the Electone E-1.
Introduction to the podcast voiced by Anne Benkovitz.
Additional opening, closing, and other incidental music by Thom Holmes.







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