100WX2 HIFI Fever high fidelity High power 2.0 stereo Bluetooth digital power amplifier board TPA3116

Attention! Case needs to be assembled by yourself, screwdriver included.
This product is full of materials, mainly high performance, high price, designed to provide high-power high-fidelity power amplifier for HIFI music.
TPA3116D2 is a Class D power amplifier IC launched by TI company, with very high index parameters. The modulation frequency can reach up to 1.2MHZ, and the high-power output distortion is less than 0.1%.
Red and gray ring inductors are specially made for digital power amplifiers, with low loss, high bandwidth, high fidelity characteristics.
The 684 thin film capacitor is a special capacitor for audio amplifiers, with low loss, high bandwidth, and high fidelity characteristics.
AUX and Bluetooth two audio source input methods, two in one.
Potentiometer to adjust the volume, with switch, easy to control the volume, very suitable for DIY speakers.
Copper DC female head, fence terminals, withstand large current, no heat, no wire damage, good wiring, not easy to short circuit.
5.0 Bluetooth version, higher transmission efficiency, longer transmission distance.
Note for use: The power switch on the board is the standby switch, and the machine is in low-power standby state after turning off the switch. To completely turn off the power or if it is not used for a long time, the DC plug on the machine can be unplugged.
Product parameter
Product name: HIF| Step filter 2x100W Bluetooth digital power amplifier board
Product model: ZK-1002
Chip scheme: TPA3116D2 (with AM interference suppression function)
There is no filter: LC filter (the sound is more round and clear after filtering)
Adaptive power supply voltage: 5~27V (optional 9V/12V/15V18V/24V adapter, high power recommended high voltage)
Adaptive horn: 50W~300W, 40~80Ω
Number of channels: Left and right (stereo)
Bluetooth version: 5.0
Bluetooth transmission distance: 15m (no occlusion)
Protection mechanism: over voltage, under voltage, overheating, DC detection, short circuit protection
Tip: Only when the audio input is sufficient and the supply voltage/current is sufficient can there be sufficient output power. The power supply voltage is higher, the relative power will be larger, and the horn with different impedance will have different output power. In the case of sufficient voltage and current, the greater the number of horn ohm, the smaller the relative sound power, please pay attention!
Power supply voltage: 12V —— 8 ohm speaker /24W(left channel) + 24W(right channel), 4 Ohm speaker /40W+ 40W
15V —— 8 EUR /36W + 36W, 4 EUR/greater than 60W + 60W
19V —— 8 EUR /64W +64W, 4 EUR/greater than 92W +92W
24V —— 8 EUR /76W + 76W, 4 EUR/greater than 110W + 110W

Answer to questions:

1. How to choose the power supply?

The power supply of the board is critical. The higher the voltage, the greater the current, and the more sufficient the output power, if you only have 12V/1A, you can bring 3-4 inch speakers. If you are 19V/5A and above, 8-10 inches is fine. Power supply must be highly valued. If the voltage is too low, the sound amplification is easy to cause sound distortion, if the current is too small to bring up the speaker will pull the voltage down, the work is abnormal or the sound quality is poor.

Recommended to use 18V19V24V power supply, current 5A or more. If you only have a 9V12V or 1A 2A power supply, it can also be used but the power is small, pay attention to the maximum volume when using may distort the sound quality.

2. How to choose a speaker?

Commonly used horns are generally 8 ohms, can not distinguish between positive and negative polarity, the effect is the same, 4 ohms of the horn can also be used. If your horn power is small, may be between 10W-30W can also be used, the supply voltage is small to prevent loud after burning the horn, such as choose a power supply below 15V. If you are a 50W-300w horn, do not worry about the problem of the horn burning, you can choose a 12-24V power supply, the higher the selected voltage, then the greater the output sound or power.

3. How to select Bluetooth or AUX audio input mode?

Power on the power amplifier board, connect the speaker, turn the audio knob blue indicator light, open the phone Settings — Bluetooth — search for “BT-WUZHI”, and then click connect, after successful connection, there will be a ding dong prompt tone, at this time for Bluetooth mode, you can play music, the next power will be automatically connected back to the phone.

If you want to use AUX audio input, you can disconnect the Bluetooth connection, there will also be a sound prompt, plug in the audio cable to play music. IN AUX (LINE IN) mode, Bluetooth is automatically converted to Bluetooth mode.

4. Small sound is OK, after the sound becomes louder, there is a phenomenon of cloudy sound?

The sound is distorted, please change the power adapter with higher voltage level.

5. Small sound is OK, after the sound becomes louder, there is a phenomenon of sound lag?

The input power is insufficient, the power supply itself intermittently power off protection, please replace a more powerful power supply; Or the power is too large, the power amplifier board is heated seriously, and there is thermal protection. Reduce the power use or check whether the heat sink is fitted well to strengthen heat dissipation.