This is the operating manual for Yamaha SPX90 Digital Multi-Effect Processor
The manual introduces the Yamaha SPX90 Digital Multi-Effect Processor, describing its 30 preset effects, the ability to create up to 60 user programs, and its MIDI compatibility. It guides users through proper installation, power requirements, and safety precautions before connecting the unit.
Detailed sections cover the front and rear panel controls, program selection, parameter editing, storing edited programs, balance and bypass functions, and MIDI implementation. Technical specifications, backup battery information, and service contact details are also included.
| US/Canadian voltage rating | 110V – 120V, 50/60Hz |
|---|---|
| General voltage rating | 220 – 240V, 50/60Hz |
| Operating temperature range | 0 °C to 40 °C (32 °F to 104 °F) |
| Input impedance | 10 kΩ |
| Output impedance | 600 Ω |
| Input level selector range | -20 dB to +4 dB |
| Output level selector range | -20 dB to +4 dB |
| Number of preset programs | 30 |
| Maximum user programs | 60 (memory numbers 31‑90) |
| Backup battery lifespan | 5 years |
The SPX90 includes 30 preset effect programs stored in ROM.
Use a supply of 110 V – 120 V at 50/60 Hz.
The built‑in backup battery is rated for about 5 years of normal use.