This manual explains the safety precautions, installation requirements and basic operation of the ULTRACOUSTIC ACX series audio power amplifiers. It includes warnings about electrical hazards, proper ventilation, grounding and the need for professional service when opening the unit.
The document details the front‑panel controls, rear‑panel connectors, wiring examples, sound‑processing features such as FBQ equalizer and built‑in effects, and provides a full technical data sheet with input/output impedances, power ratings, dimensions and power‑supply options. This manual is written in Chinese.
| Instrument Input Impedance | 10 MΩ |
|---|---|
| Line Out Output Impedance | 4.3 kΩ |
| Maximum Output Level (Line Out) | >24 dBu |
| Amplifier Power per Channel | 45 W into 4 Ω |
| Dimensions (ACX450) | 413 x 455 x 212 mm |
| Weight (ACX450) | 13.2 kg |
| Power Supply Voltage (US/Canada) | 120 V~ 60 Hz |
Use a fuse of the same type and rating as specified in the manual.
Yes, the fuse holder has two positions that allow switching between 120 V and 230 V.
A 6.3 mm mono jack labeled INSTRUMENT on the front panel.
Press the FBQ button on the front panel to turn the FBQ function on.