Parameters:
AUX audio input + Bluetooth two-in-one HIFI level with filtering 100Wx2 Bluetooth digital amplifier
1. Working mode: class D
2.Audio input: support bluetooth 5.0, AUX analog signal
3. Rated output power: 100W+100W
4. Frequency response: 20Hz to 20KHz
5. Working voltage: DC5V to DC27V
6. Recommended power voltage: DC19V
7. Fit speaker parameters: 4-8 ohms
8. size: 84*52*24mm
9.Net weight: about 130g
Product Feature
This product is full of materials, featuring high performance and high price. It is specially designed to provide high-power and high-fidelity power amplifiers for HIFI music.
TPA3116D2 is a Class D amplifier IC launched by TI Company, which has very high index parameters.Up to 1.2MHZ modulation frequency, high power output distortion less than 0.1%.
Red and gray ring inductance is specially made for digital amplifier, with low loss, high bandwidth and high fidelity.
The 684 thin film capacitor is a special capacitance for audio amplifier, which has the characteristics of low loss, high bandwidth and high fidelity.
AUX and Bluetooth two audio source input mode, two in one.
Potentiometer to adjust the volume, with a switch, easy to control the volume, very suitable for DIY speakers.
Copper DC head, fender terminal, high current, no heat, no wire injury, good wiring, not easy short circuit.
The 5.0 Bluetooth version has higher transmission efficiency and longer transmission distance.
NOTE：
1.For DIY---The outer casing is a material package, It needs to be assembled by itself, and the material package is given a screwdriver.
2.---Attention!The heat sink tape 3M glue needs to be pasted to the chip by itself. Please refer to the picture in the description. The hotter the more sticky the thermal conductivity is.The shell version needs to be assembled by yourself. Screwdriver is given with the shell version.
3.For use---The power switch on the board is standby switch. After the switch is off, the machine is in standby state with low power consumption. If the power is completely turned off or the DC plug on the machine can be unplugged for a long time.O
Question and answer:
1. How to choose a power supply?
The power supply with the board is critical. The higher the voltage, the higher the current and the better the output power. If you only have 12V 1A, you can bring a 3-4 inch speaker. If you are 19V 5A or above, there is no problem with 8-10 inches, and the power supply must be highly valued. If the voltage is too low, the sound will be distorted after the sound is amplified. If the current is too small, the speaker will pull the voltage low, work abnormally or the sound quality will deteriorate.
It is recommended to use 18V19V24V power supply with current above 3A. If you only have 9V12V or 1A 2A power supply, it can also be used but the power is small. Please pay attention to the maximum volume when using it, which may affect the sound quality.
2. How to choose a speaker?
Commonly used speakers are generally 8 ohms, can not distinguish between positive and negative, the effect is the same, 4 ohm speakers can also be used.
If your speaker power is small, it may be used between 10W-30W. The power supply voltage is small to prevent the amplifier from burning out after burning. For example, select a power supply below 15V.
If you are a 50W-200w speaker, don't worry about the speaker burnout. You can choose 12-24V power supply. The higher the voltage you choose, the louder the output sound or power.
3. How to choose Bluetooth or AUX audio input mode?
Power on the power amplifier, connect the speaker, turn the audio knob blue light to turn on, turn on the phone settings - Bluetooth - search for "BT-WUZHI", and then click the connection, there will be a beep when the connection is successful, this When it is in Bluetooth mode, you can play music. The next time you power on, it will automatically connect with the phone.
If you want to use AUX audio input, then disconnect the Bluetooth connection, there will be a voice prompt, insert the audio cable to play music. In AUX (LINE IN) mode, Bluetooth is automatically switched to Bluetooth mode.
4. When the sound becomes louder, the phenomenon of turbid sound appears.
The sound is distorted. Please change the adapter power supply with a higher voltage rating.
5. After the sound becomes louder, the sound is stuck.
The input power is insufficient, and the power supply itself is intermittently powered off. Please replace the power supply with a larger power.
Or the output power is too large, the power amplifier board is seriously heated, and thermal protection occurs, reducing power usage or enhancing heat dissipation.
