This is a user manual for a car amplifier. It introduces the product's features and characteristics, including installation, use, and maintenance.
This manual explains how to install the CMQ405 car amplifier, connect speakers and the car audio system, and wire the power supply. Safety precautions, recommended mounting locations, and required hardware such as 25 mm screws are detailed.
Operating instructions cover input level adjustment, HPF/LPF mode selection, bass‑boost settings, and the meaning of the green and red protection indicators. The document also lists technical specifications, part numbers, and environmental compliance information, and provides a troubleshooting guide for common issues such as fuse failure or overheating. This manual is written in Chinese.
| Total Harmonic Distortion | 0.09 % |
|---|---|
| Signal‑to‑Noise Ratio | 100 dB |
| Frequency Response | 5 kHz – 50 kHz |
| Input Sensitivity | 300 mV – 6 V |
| Input Impedance | 22 kΩ |
| Fuse Rating | 25 A × 2 |
| Dimensions (L × W × H) | 390 mm × 240 mm × 54 mm |
| Weight | 3.02 kg |
Remove the blown fuse and replace it with two 25 A fuses that are supplied with the unit or purchased separately.
The red PROTECTED light shows the amplifier has shut down because of overheating, speaker DC, voltage out of range, or a speaker short circuit.
Connect speakers with an impedance of 2 Ω–8 Ω for stereo mode, or 4 Ω–8 Ω when the unit is bridged.