This is a user manual for the Yamaha DSP-AX457 Natural Sound AV Amplifier, which describes the features and operation of the product.
This manual begins with safety warnings and proper handling instructions to prevent fire, electric shock, and injury. It explains how to install the unit, connect speakers, antennas, and external devices, and how to protect the settings with the MEM. GUARD feature.
The later sections cover basic and advanced setup, remote‑control functions, various sound‑field programs, and detailed connection diagrams for DVD players, game consoles, and other audio‑video sources. Troubleshooting tips and specifications are also included. This manual is written in Japanese.
| Required Power Voltage | AC100V (50/60 Hz) |
|---|
The unit must be used with AC 100 V at 50 Hz or 60 Hz.
Use the MEM. GUARD function to save the modified settings.