Feature

●This is a -powered 12-24V power supply, using TIs TPA3116D2 high-performance digital power amplifier chip as the core, to do parallel bridged bass channel power amplification output, to do left and right channel power amplification output.
●support 100W + 50W + 50W three-channel output.
●Support external audio input interface, with preamplifier, bass crossover processing; bass volume, bass frequency, left and right channel volume, treble, function control switch / total volume, 5 adjustment potentiometers.
●Wide working voltage, energy-saving design, efficiency up to 90%. You can use a good performance switching power supply, laptop switching power supply, you can also use a charging bottle, or car power supply, etc...
●The board is a finished board that has been soldered and tested. Connect the speaker box according to the picture, connect the appropriate power supply, connect to the audio device to play, or connect the sound source input correctly.

Description

Description:
The main Parameters:
Size : 100 x 100 x 24mm, excluding potentiometer and socket projection.
Operating voltage range: 12-24V
Note that the no-load voltage should not be greater than 25.5V.
Audio input sensitivity: 600-800mV.
Frequency response range: 20Hz-20KHz.
Speaker impedance:left and right channel speakers: 4-8 ohm,bass speaker impedance: 2-8 ohm.
The output power is related to the supply voltage/current, the speaker impedance, and the size of the audio input.
When the power supply voltage/current is sufficient, usually the power supply voltage is higher and the relative output power can be made larger.
Speakers with different impedances have different output powers.
Usually, the speaker impedance is smaller and the power is easier to achieve.

Package included:
1*amplifier board

Product Questions
1. Amplifier board has current sound and noise during use
Most of our amplifier board use power supply. The board itself does not produce current sound and noise.
The main causes of current acoustic noise are:
A, The power supply filter used is not good; the current sound is caused by wrong input by the power or audio input.
B, The input signal quality is poor; the output of the device connected to the input is improper, and the noise is caused by the abnormal input of the audio source.
C, The input cable is of poor quality; the line is in poor connect; the wiring is damaged; the wiring is suspended
D, The input connection has other playback devices, and some devices share the power supply to cause noise.
2. No sound output, no sound in 1 channel?
A, The speaker is broken, or the speaker cable is not connect well.
B, The input cable is not in good connect; the wiring is damaged; the output of the device connected to the inpu