Yamaha DX7

Digital programmable algorithm synthesizer

Yamaha DX7 FM synthesizer 80s
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1983 (May)
Initially sold for ¥230,000

The DX7 is without any doubt a milestone in synthesizer history. It achieved a great success over the years and has now a cult status among players and aficionados, but we must remember that in 1983 it wasn't a groundbreaking instrument, rather a mix of the latest technologies already available.

FM synthesis was in development since the late 70s at Yamaha, with the GS lineup already equipped with digital FM capabilities. It sounded great, but had to be programmed using an external computer, and was extremely heavy, bulky and expensive. Roland was already producing cheap polyphonic synthesizers for the public: for example the Juno 6 retailed for far less than 1000$ in 1982. Nothing particularly innovative with the interface either, as the 1981 Rhodes Chroma already adopted membrane switches and sliders, and many synthesizers already had command panels flush with the keyboard.

Eventually the convergence of all these single avant-garde instances successfully resulted in a synthesizer that received lots of praise for its sonic capabilities. Its engine however requires a different attitude to be programmed, something that since 1983 scared away lots of players used to the common oscillators+filter scheme but can be learned for sure.

The DX7 FM engine has 6 operators, 32 algorithms, pitch envelope generator and keyboard scaling. Modulation can be achieved through foot switches, breath controllers and keyboard aftertouch. Voices cannot be stacked and a basic MIDI implementation is provided, although many later expansion will add these features.

Additional patches storage relies on RAM cartridges type 1, and many presets carts were manufactured also by third parties as the engine could to so much more than the limited selection of factory presets.

Features

  • Programmable 6-operator 32-algorithm digital FM tone generator.
  • Independent 8-parameter envelope generator for each operator.
  • 32-voice internal RAM memory.
  • Cartridge slot for ROM cartridges containing 64 voices or user-programmable 32-voice RAM cartridges.
  • Programmable function memory for real-time performance effects.
  • 61-key velocity and after-touch sensitive keyboard.
  • 16-note polyphonic output.
  • Sustain footswitch, portamento footswitch, volume and modulaion foot controllers, and breath controller inputs.
  • MIDI IN, OUT and THRU terminals.
Yamaha DX7 brochure cover
Yamaha DX7 brochure cover
Yamaha DX7 brochure
Yamaha DX7 brochure

Technical
specifications

Keyboard

61 keys
Touch control: inital touch, after touch

Sound source

FM tone generator (6 operators, 32 algorithms)

Simultaneous note output

Polyphonic: 16 notes
Monophonic: 1 note

Memory capacity

Voice memory: 1 bank x 32 voices

Connection terminals and interfaces

Output (unbalanced)
Output Phones (phone jack)
Control jack: foot switch, foot control
Cartridge insert
Breath control
MIDI IN, MIDI OUT, MIDI THRU

Dimensions and weight

1018w x 102h x 329d (mm) / 40” x 4” x 13”
14.2Kg / 31.2lbs

Yamaha DX7
Owner's manual

To get yourself started with this machine, you might want to check out the manual. Of course, real collectors have the original copy of the DX7 manual in pristine condition, but they're quite hard to find at reasonable prices. You don't really want to get a real DX7 and then read the pdf manual on your smartphone don't you?

Fortunately, to support this website you can now buy a copy of the reprint of the Yamaha DX7 manual. The manual, just like the original, comes with its own "performance notes" booklet, an even rare object to buy nowadays.

Yamaha DX7 manual

External
links