AOSHIKE 2pcs 4 Inch DIY Bass Speaker Loudspeaker Vibrating Membrane Passive Bass Woofer Diaphragm Plate,Speaker Passive Radiator Replacement Kit

If you want a Bluetooth version:

https://www.amazon.com/dp/B077GS6SC9

Operating voltage range: DC 12-25V (current 3-4A above, if the power of the larger recommended 19-24V / 4-5A above);
Audio input sensitivity: 500-800mV;
Frequency response range: 20Hz-20KHz;
Horn impedance:
Left and right channel speakers: 3.5-8 Î©, woofer impedance: 2-8 Î©;
Maximum output power: 50W (left channel) + 50W (right channel) + 100W (bass channel).

Package Included:
1*TPA3116 2.1 Subwoofer Amplifier Board
1*PH2.0-3P single plug shielded wire

About power selection:

24V Power Adapter:

https://www.amazon.com/dp/B076DCCDZD

https://www.amazon.com/dp/B01J19G00E

https://www.amazon.com/dp/B06Y1DTG35

The use of DC power supply, positive and negative reverse protection, positive and negative reverse connected no power.

The power supply must not be mistakenly connected to the horn's output connector. This can cause damage to the amplifier chip.

The maximum working voltage is 25V (Note: The maximum working voltage of TPA3116 power amplifier chip is 26V, do not use more than 26V).

If you use an ordinary AC transformer power supply, you must add rectifier filter before you can use it. (Note: The no-load voltage after rectification should not exceed 26V).

This is a front amplifier, bass divider processing amplifier board. With bass, left and right channel volume adjustment, treble adjustment, total volume potentiometer control 2.1 power amplifier board.
Use DC power 12-24V, maximum support 50W (left channel) + 50W (right channel) + 100W (bass channel) three-channel output.
Using TPA3116D2 high-performance digital power amplifier chip as the core. A parallel bridge to do the subwoofer output, the other to do the left and right channel output.
Wide operating voltage, power-saving design, the efficiency of up to 90% or more. You can use a good performance of the switching power supply, laptop switching power supply, you can also use the car power and so on.
Boot anti-shock protection design, start no POP burst sound.
This is a front amplifier, bass divider processing amplifier board. With bass, left and right channel volume adjustment, treble adjustment, total volume potentiometer control 2.1 power amplifier board.
Use DC power 12-24V, maximum support 50W (left channel) + 50W (right channel) + 100W (bass channel) three-channel output.
Using TPA3116D2 high-performance digital power amplifier chip as the core. A parallel bridge to do the subwoofer output, the other to do the left and right channel output.
Wide operating voltage, power-saving design, the efficiency of up to 90% or more. You can use a good performance of the switching power supply, laptop switching power supply, you can also use the car power and so on.
Boot anti-shock protection design, start no POP burst sound.

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KNACRO TPA3116 2.1 Subwoofer Amplifier Board DC12-24V HiFi Digital Amplifier Board 50W + 50W + 100W;