1. Product Parameters
Input Voltage: 8–18V DC (Wide Range, 12V Recommended)
Output Power: 15W × 2 RMS (Peak 25W × 2 @4Ω)
THD+N: Frequency Response: 20Hz–20kHz (±1dB)
Signal-to-Noise Ratio: >95dB (Ultra-Low Hiss)
Output Impedance: 4–8Ω (Bookshelf/Car Speakers)
Operating Temp.: -40°C to +105°C
Dimensions: 65mm × 45mm × 20mm

2. Key Pin Functions
DC+: DC Input Positive (8–18V, connect to battery/power supply positive)
DC-: Power & Signal Ground (Must share common GND with audio source)
LIN/RIN: Left/Right Audio Input (3.5mm AUX jack, 200mV–2V sensitivity)
LOUT+/LOUT-: Left Channel Output (Connect to speaker ± terminals)
ROUT+/ROUT-: Right Channel Output
MUTE: Active-Low Control

3. Common FAQs
Q1: Overheating in car engine bay?

A: Thermal Protection:

Add 40mm fan if ambient >50°C .
Ensure voltage ≤14.4V (engine running) .
Q2: Only one channel works!

A: Signal Isolation:

Swap L/R input cables to isolate board vs. source fault .
Check solder joints at LOUT/ROUT terminals .
Q3: "Pop" noise during engine ignition?

A: Anti-Interference Fix:

Add 1000μF capacitor between DC+ and DC- .
Route audio cables away from ignition wires .
Q4: Bass distortion at high volume?

A: Power & Impedance:

Use ≥12V/3A power (undervoltage clips output) .
Verify speaker impedance ≥4Ω (2Ω loads cause overcurrent) .