This manual provides safety guidelines, installation steps, and operating instructions for the Digisynthetic DH series power amplifiers (models DH 500, DH 700, DH 900, DH 1200, DH 1400, DH 1800). It explains panel controls, rear‑panel connections, and mode selection (stereo or bridge) as well as recommended wiring practices.
Technical specifications, dimensions, power requirements, and warranty information are listed in detail. The document also includes troubleshooting advice and protection circuit descriptions to help users maintain reliable performance. This manual is written in Chinese.
| Output Power (8 Ω) | 49 W / 80 W / 100 W (DH 500/700/900) |
|---|---|
| RMS Power (8 Ω) | 80 W / 1400 W / 2000 W (DH 500/700/900) |
| Sensitivity (V) | 440 mV / 530 mV / 580 mV (DH 500/700/900) |
| Input Impedance | 20 kΩ (balanced) / 10 kΩ (unbalanced) |
| Frequency Response | 20 Hz – 20 kHz |
| Power Consumption (idle) | 90 W |
| Dimensions (H × W × D) | 2U, 482 mm × 423 mm × 89 mm |
The switch must be changed only when the amplifier is turned off; adjust the STEREO/BRIDGE setting while power is disconnected.
The unit includes over‑heat, over‑load, short‑circuit, input‑overload, and high‑frequency protection, plus DC output protection for the speakers.
Do not connect the output ground to the signal input ground; keep them separate to avoid oscillation.