Note:
(Note that due to the different components of the product modified board, the stock will be different from the picture. This cannot be regarded as a reason for return. If you cannot accept it, please do not buy it)
Description:
1. This is a DC12-24V single power supply, with TI's TPA3116D2 high-performance digital power amplifier chip as the core, which can support 50W (left channel) + 50W (right channel) dual-channel output.
2. Support Bluetooth audio receiver, with external audio input interface, bass, midrange, treble three-tone potentiometer, function control switch/volume adjustment potentiometer.
3. Wide working voltage, power saving design, efficiency up to 90%. You can use a good switching power supply, the switching power supply of a notebook computer, or a rechargeable bottle or car power supply.
4. The board is a finished board that has been welded and tested. Connect the speakers as shown, connect the appropriate power supply, connect the Bluetooth audio device, or connect the correct audio input.
5. Power on: Default Bluetooth mode, waiting for Bluetooth audio device to connect...
6. Source input player: Bluetooth disconnected state -> press the volume potentiometer switch -> switch to source input mode
Technical Parameters:
1. Dimensions (length * width * height): 110 * 83 * 25mm, excluding the protruding part of the switch socket.
2. Operating voltage range: DC 12-24V (current 3-4A, such as the above power requirements 20-24V / 5-6A) If you use AC transformer power supply, you must add a rectifier filter to the DC power supply,
can use. Please note that the DC no-load voltage should not exceed 25.5V (this is very important)
3. Bluetooth receiving distance:> 8m (Bluetooth version 4.2) to block the receiving distance without obstacles, and the Bluetooth performance of the mobile phone itself will also affect the receiving distance.
4. Sound source input sensitivity: 600-800mV; frequency range: 20Hz-20KHz
5. Speaker impedance: 4-8 ohms
6. Output power:
Power 12V /8Ω speaker> 10W x 2; 12V /4Ω> 15W x 2;
21V /8Ω> 30W x 2; 21V /4Ω = 50W x 2;
24V /8Ω> 35W x 2; 24V /4Ω> 60W x 2;
This is based on the above test conditions, the actual test data on the instrument, the output power is related to the power supply voltage/current, speaker impedance, and the size of the audio input. When the power supply voltage/current is sufficient, the power supply voltage is usually higher, and the relative output power can be made larger. Speakers with different impedances also have different output powers. Generally, speakers have smaller impedance and more power.
