This is a support Bluetooth 4.2 audio receiver, with a pre-amplifier, Bass crossover Processing. With bass, left and right channel volume adjustment, treble adjustment, the total volume potentiometer control 2.1 amplifier board.
Use DC power supply: 12-24V power supply, Maximum support 50W (left channel) +50 W (right channel) +100 W (bass channel) three-channel output.
Is the use of the United States TI company TPA3116D2 high-performance digital amplifier chip as the core, a parallel bridge subwoofer output, do a left and right channel output.
Wide operating voltage, power-saving design, efficiency up to 90%. You can use good performance switching power supply, laptop switching power supply, you can also use the charging bottle, or car power supply and so on.
Board is a good test of the finished product board is welded, according to figure connected to a good speaker, audio input or connect the Bluetooth audio device and connected to the power can be used.
Volume potentiometer left turn is to adjust lower volume, turn right is to adjust HIGH volume. Press Down is the function switch
Function switch Instructions for use:
1. Plug in the power on default Bluetooth mode
2. Bluetooth disconnected, long press switch can switch to audio input mode
3. Bluetooth play status, short press the switch to pause / play
The main technical parameters:
101 (W) x 100 (D) x 25 (H) mm, excluding potentiometer and socket projection
Voltage range: DC 11-25V (Current 3-4A, or 19-24V / 4-5A, such as high power requirements 20-24V / 8-9A above)
Subwoofer frequency range :20Hz~200Hz
Bluetooth receiving distance:> 8 m (meters)
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,