Bluetooth 2.1 amplifier board with high power, finished product digital Class D 3-channel HIFI super bass, fever-grade

Basic parameters

Board size: 100 (length) X 92 (width) X 38 (height) mm (excluding potentiometers and other socket protrusions)

Working voltage: 22 - 26VDC (recommended DC24V5-10A)

Output impedance: subwoofer 2 - 8Ω, left and right channels 4 - 8Ω

Output power: subwoofer 100W (24V/3Ω)

50W for left and right channels (24V/4Ω)

Input impedance: 20KΩ

Signal input: 800-1500mV P-P

Frequency response: 20Hz-20KHz (±3dB)

20-250Hz (subwoofer)

Distortion: subwoofer <10%

left and right channels <1%

Product introduction

This amplifier board uses all high-end original SMD components, solid materials, including TPA3116D2 chip, never disassembled products. . . With carefully selected components, the quality is very good. The component layout is neat and the appearance is also very beautiful. From the overall appearance of the board, it can be seen that the audio correction capacitor uses blue Philips fever capacitors; the volume adjustment uses a small high-quality sealed potentiometer made in Taiwan; the power filter capacitor uses 2 4700UF large pond electrolytics, high temperature, low resistance and long life; the audio output uses a red-gray ring high-efficiency inductor dedicated to audio, with good high-frequency extension, high efficiency and no heat Product highlights

1. Power-on delay output protection, no impact sound, protect expensive speaker units

2. High output power, low distortion, high sound restoration. No noise, interference current sound

3. Support single power supply DC 24V, or AC 18V (requires additional rectifier filter circuit), dual power supply mode

4. Multiple audio input methods, onboard Bluetooth receiving module, or input audio from 3P socket to meet different module connections

5. Support subwoofer cutoff frequency adjustment (cutoff range 180Hz-250Hz)

6. Designed with anti-reverse circuit to avoid improper use or power polarity reverse damage to the amplifier board

7. Adopt high-quality gold slotted radiator, high-end, atmospheric, and upscale

8. Adopt original imported chips, high-quality components, SMT patch technology, reliable quality, high cost performance

9. The product layout is reasonable and the color matching is beautiful, just like a fine work of art