MINI Bluetooth 5.0 Wireless Audio Digital Power amplifier Stereo board 50Wx2

Product name: Mini version 2*50W Bluetooth digital power amplifier board Adaptation power supply voltage: 5-24V Adapted speakers: 30W-200W, 4Ω, 8Ω Channel: left and right dual channels Bluetooth version: 5.0

The potentiometer adjusts the volume, with a switch, it is convenient to control the volume, which is very suitable for DIY speakers.

If it is a metal box, the Bluetooth needs to be led out.

The copper DC connector is used, which can withstand high current and does not generate heat.

Capacitor 470uf35V solid capacitor, to ensure the power storage and heat diation capacity, stable and continuous power supply is a prerequisite for good sound quality.

The DC head lead wire is compatible with the input power interface of this product. Even if you don't have a DC head adapter or battery, you can easily wire it.

The 5.0 Bluetooth version has higher transmiion efficiency and longer transmiion distance.

The power amplifier module does not contain a power supply, it needs an external power supply, or it can be connected to a laptop power supply.

Question answer:

1. How to choose a power supply?

The power supply of the board is very ant. The higher the voltage, the greater the current, and the more sufficient output power. If you only have 12V 1A, you can bring 3-4 inch speakers. If you are above 19V 5A, there is no problem with 8-10 inches, and the power supply must be highly regarded. If the voltage is too low, the amplified sound will easily cause sound distortion. If the current is too small, the speaker will pull down the voltage, which will result in abnormal operation or poor sound quality.

It is recommended to use a power supply of 18V19V24V with a current of 3A or more. If you only have 9V12V or 1A 2A power supply, you can also use it but the power is low. Note that when the volume is maximized, it may be distorted and affect the sound quality.

2. How to choose a speaker?

Commonly used speakers are generally 8 s, and the positive and negative polarities are not distinguished, and the effect is the same. 4 speakers can also be used. If your speaker has a low power, it may be between 10W-30W. The power supply voltage is lower to prevent the speaker from burning after the amplified sound. For example, choose a power supply below 15V. If you are a 50W-200w speaker, don't worry about the problem of speaker burnout, you can choose a 12-24V power supply. The higher the voltage you choose, the greater the sound or power that can be output.

3. How to connect to Bluetooth?

Power on the power amplifier board, connect the speaker, turn the audio knob to light up, open the phone settings-Bluetooth-search for "-WUZHI", and then click connect, after the connection is succeful, there will be a Ding Dong sound, this time it is In Bluetooth mode, just play music, and the phone will automatically connect back to the phone next time it is powered on.

4. It's okay if the voice is small, but when the voice becomes louder, the voice becomes muddy?

The sound is distorted, please change to a higher voltage adapter power supply.

5. It's okay if the voice is small, but when the voice becomes louder, the voice freezes?

If the input power is insufficient, the power supply itself has intermittent power fai protection, please replace with a higher power power supply; or the power is too large, the power amplifier board heats up seriously, and thermal protection occurs. Reduce power usage or strengthen heat diation.

About shping
Shping and Packaging All it will be double checked and well packed before sending.It will be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for e areas,it may take a little longer). 

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