01
From the Community
From the community
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02
Audio Demos
03
Compatible Sound ROMs
04
Parts & Components
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05
Modifications
06
Owner Registry
Production figures for the GX-1 were never widely published, so there’s no official record of how many were built — or how many survive. This registry is a community census: every owner who logs their unit makes it the closest thing there is to a real count.
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07
System Components
CONTENTS
01From the Community02Audio Demos03Compatible Sound ROMs04Parts & Components05Modifications06Owner Registry07System ComponentsManufacturer
Yamaha
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Specifications
- LFO
- 3
- Dates
- 1973/1975- 1977
- Price
- $60,000
- Filter
- voltage controlled 2-pole low-pass and high-pass filters per oscillatorstatic band-pass and high-pass filters on sawtooth and square waves only
- Effects
- 2 x spring reverb
- Keyboard
- 1 x 61-key, horizontal aftertouch1 x 61 key37-key, velocity, vertical and horizontal aftertouch25 pedals
- Polyphony
- 18 voices totally:2 xpolyphonicsectionswith 8 note dual-osc polyphony per sectionSolo section single-oscmonophonicPedal section with triple-oscmonophonic
- Attenuator
- 2 envelope generators
- Oscillator
- Upper and Lower poly sections - 2 per voiceSolo section - 1Pedal section - 3
- Timbrality
- 4
- Manufacturer
- Yamaha
- Synthesis type
- AnalogSubtractive
- External control
- None