This document is the user manual for TOA DA-250F and DA-250FH multi-channel power amplifiers, which introduces the safety precautions, overview, features, usage considerations, installation considerations, button settings and speaker connection methods, removable terminal plug connection methods, input sensitivity setting methods, protection action list, filter cleaning methods, etc.
This manual provides safety precautions, installation guidelines, and detailed operation instructions for the TOA DA-250F and DA-250FH multichannel power amplifiers. It includes descriptions of front and rear panel functions, button settings, speaker connections, and filter cleaning procedures.
The document also lists technical specifications such as output power, frequency response, distortion, input sensitivity, and environmental limits, along with a parts list and dimensions for proper rack mounting. This manual is written in Chinese.
| Output Power (8Ω) | 170W x 4 |
|---|---|
| Output Power (4Ω) | 250W x 4 |
| BTL Output Power | 500W (8Ω) x 2 |
| Frequency Response | 20Hz~20kHz (8Ω), 50Hz~20kHz (4Ω) |
| Total Harmonic Distortion | 0.1%–0.3% |
| Input Sensitivity | +4dB (1.23V) / -10dB (0.24V) |
| Input Impedance | 10kΩ (balanced) |
| Signal‑to‑Noise Ratio | 105 dB |
| Power Supply Voltage | AC 220‑240V, 50/60 Hz |
| Power Consumption | 200 W per 4‑channel set |
| Operating Temperature | -10 °C to +40 °C |
| Operating Humidity | ≤90 % RH (no condensation) |
| Dimensions (W×H×D) | 482 mm × 44 mm × 400 mm |
| Weight | 6.8 kg |
The amplifier should be used in temperatures from –10 °C to +40 °C.
It provides 250 W per channel at 4 Ω.
Remove the heat‑sink panel and clean the filter inside.
Turn off the power before connecting the speaker cables.