Product description
1. This is a low power amplifier board with preamp, low crossover, and low volume potentiometer control. It is for the professionals who already have 2.0 amps, and the DIY combination is used for 2.1 amps.
2. It is based on TPA3116D2 of ti high performance digital power amplifier chip.
3. Use DC 12-24V power supply, wide working voltage, energy-saving design, efficiency up to 90%. Supports up to 100W (bass) bass channel output.
4. You can use a good performance switching power adapter, portable switching power supply, or rectified and filtered transformer power supply, you can also use a rechargeable power supply, or car power supply, etc.
5. Boot anti-shock protection design, no popping at boot, pay attention to high requirements.
6. The joint is a finished board that has been welded and tested. Connect the speaker according to the picture and the input with audio input and power.
Board size: 55 X 83 X 29mm (excluding potentiometer protrusion 15mm)
Operating voltage range: DC9-25V (current 2-3A or more, if the power is larger, it is recommended to be 19-24V4A or more)
Frequency response range: input: 20Hz-20KHz
Audio input sensitivity: 500mV
Subwoofer Impedance: 2-8 ohms
1. Supply voltage and power supply, speaker impedance and audio source input size. Generally, the power supply voltage is higher, and the supported output power will be larger.
2. Speakers with different impedances can support different power output. Usually the speaker power is smaller and easier to achieve.
Wiring method (important):
3.Instructions to check the web page before use >> 2. Connect the speaker cable >> 3. Connect the audio input cable >> 4. Confirm that the wiring is correct, and finally plug in the power! To change the wiring or move the board, you need to remove the power before working. Incorrect use, short circuit between solder joints or short circuit between parts can cause chip damage.
Precautions for use (important):
About selecting the power supply:
1. The board is powered by DC power supply, with protection of positive and negative reverse connection, positive and negative connection, and no power.
2. The power supply is not allowed to connect to the speaker output interface incorrectly, which will cause damage to the power amplifier chip.
3. The maximum working voltage is 25V (note: do not use more than 25V when using).
4. The board is powered by the DC power supply. Use a good DC power source. If the performance of the power supply is poor, there may be hum, or current sound ... Especially for the switching power supply, try to use ground pin 3, similar to a 3-pin ac plug for laptop . Note: Household AC power strips must be grounded. If they are not grounded, some switching power supplies may have current sounds.