Independent research and development, self-produced self marketing, excellent performance of the latest version of the TDA2050A + TDA2030A + ne5532 three channel (2.1) super subwoofer amplifier board finished plate, the output power: left and right channel 18W+18W, subwoofer 32W, completely compatible with the lm1875. A power supply output terminal and an audio input terminal of the decoding board are provided with the power supply of the 12V decoder board (the ground GND of the audio input of the decoder board when the actual connection is connected is not reduced. This is a good welding, after cleaning, test qualified to allow the listing of finished products, in kind as shown in Figure
The purchase of the board presented 3 potentiometer plastic screw cap, the quality is very good, random hair color
Overview of this board
Bass strong, strong, clear and crisp. Using the chip for the new original: the default bass unit for the 1 TDA2050-- output peak of 32W, the dual channel unit for the 2 TDA2030-- output peak of 18W+18W. TDA2030, TDA2050, LM1875 can be completely interchangeable, if all replaced by TDA2050 or LM1875, please change the radiator. The power amplifier chip has five pins: positive, negative, forward, reverse, and output. Chip heat sink and a cathode connected through electric work when the heat dissipation of the chip never and ground short circuit, or immediately burned out. Above is a schematic diagram of the board wiring, please check the wiring.
Left and right channels: TDA2030Ax2, peak power: 18Wx2, recommended by the 2.5-4 inch, 4-8 European 10-30W full frequency speaker.
Bass output: TDA2050Ax1, peak power: 32W, recommended with 5-8 inch, 4-8 European 30-50W bass speaker.
Working power supply: AC dual AC9-15V transformer, recommended for the use of dual AC12V power of more than 30W of the transformer.
Output power: DC12V1.5A, power supply to the 12V decoder board.
PCB material: FR-4 glass fiber board, thickness: 1.6mm.
PCB size: 135x60mm.
Radiator specifications: 100x33x37mm (long x wide x high).
Potentiometer shaft center distance: 25mm, shaft diameter: 6MM.
PCB mounting hole spacing: 128mm (long) x38mm (wide).
Net weight: 230g.
Convenient decode board input port: the board is provided with a MP3 decoder board audio input hub (specifications 3P-2.0mm) and to decode board power supply of 12V DC regulated power supply output hub 2P-2.0mm. Use the board output 12V power supply to supply the decoding board, the actual wiring when decoding in audio input to GND don't pick capable of reducing interference; if the decoding board separate power supply must be connected to GND. This shop has a variety of 12V power supply of lossless audio WAV+MP3 decoding board and decoding board with the amplifier board power supply end of the positive and negative poles corresponding, the wiring is very convenient, the hand can directly plug can sound