Product Description

Audio Speakers DIY Bluetooth 5.0 High Power Digital Amplifier Stereo Board 50W+50W AMP Amplificador Audio Home Theater


The potentiometer adjusts the volume with a switch for easy control of the volume, making it ideal for DIY speakers.If it is a metal box, you need to bring out the Bluetooth antenna.

The copper DC connector is used to withstand high current and no heat.

Capacitor 470uf35V solid capacitors ensure power storage and heat dissipation, and stable power supply is a prerequisite for good sound quality.

Free DC head lead, compatible with the input power interface of this product, even if you don't have a DC head adapter or battery, it can be easily wired.

5.0 Bluetooth version, the transmission efficiency is higher, the transmission distance is farther.

Precautions for use: The power switch on the board is the standby switch. After the switch is turned off, the machine is in a low-power standby state. To completely turn off the power or unplug the DC plug on the machine for a long time.


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 connect to Bluetooth?

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.

 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. 


package include:

 Amplifier Stereo Board *1set



Welcome to our store!
 
We are a professional worldwide wholesale company, with our own factory located in China.
 
We supply many products including video game, health & beauty, phone accessories, computers accessories, camera & camcorder,car accessories, Clothing accessories, games, toys & hobbies, jewelry, antique & craftwork. High product quality,reasonable prices, excellent customer service and a reliable credit standing is our tenet.
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Payment must be received in 7 business days of auction closing.
 
Please leave note for your special request (e.g. Colors or Size) in PayPal when you pay the order.
 
Any special request cannot be accepted after 24 hours of payment, because most of orders will be processed instantly and same day dispatched.
  • Item will be shipped out within 48 hours upon receipt of your payment.
  • The shipping time details, please read the shipping and delivery together with the price.
  • We ship to your PayPal address. Please make sure your PayPal address is correct before you pay.
  • Considering the cost of business and easy shipping, usually the item is packed in retail packaging.

CountryShipping Time

Working Days + Saturday 
+ Sunday

5-78-1516-2021-2526-30>31
United StatesRate(item arrived)5.1%50.1%29.6%10.5%4.7%Refund
United KingdomRate(item arrived)9.9%63.2%19.1%3.4%4.4%Refund
AustraliaRate(item arrived)21.4%50.0%14.3%7.2%7.1%Refund
FranceRate(item arrived)10.5%28.6%43.8%10.1%7.0%Refund
GermanyRate(item arrived)11.1%22.2%30.3%20.9%15.5%Refund
CanadaRate(item arrived)0.0%47.1%31.4%17.6%3.9%Refund
SpainRate(item arrived)3.7%24.1%48.2%13.8%10.2%Refund
If this item is defective upon receipt, customer has up to 14 days from date of receipt for exchange of a new one.But buyers should be pay for the shipping charge for returning.
 
We care about our valued customers, and are always willing to work things out. If you have any problems, please e-mail us immediately.
If you have any questions, please feel free to send eBay message to us, our service specialists 24 Hours a Day, 7 Days a Week (maybe there is some delay in weekends).
 
Our aim is to provide Top Level Customer Service, normally so we will try our best to solve any problem.
 
Please DON'T leave negative or neutral feedback if you haven't received item in 30 days, because we have mentioned the shipping time repeatedly.
About Us
Welcome to our store!
 
We are a professional worldwide wholesale company, with our own factory located in China.
 
We supply many products including video game, health & beauty, phone accessories, computers accessories, camera & camcorder,car accessories, Clothing accessories, games, toys & hobbies, jewelry, antique & craftwork. High product quality,reasonable prices, excellent customer service and a reliable credit standing is our tenet.
Payment
We accept PayPal only.
 
Payment must be received in 7 business days of auction closing.
 
Please leave note for your special request (e.g. Colors or Size) in PayPal when you pay the order.
 
Any special request cannot be accepted after 24 hours of payment, because most of orders will be processed instantly and same day dispatched.
Shipping
  • Item will be shipped out within 48 hours upon receipt of your payment.
  • The shipping time details, please read the shipping and delivery together with the price.
  • We ship to your PayPal address. Please make sure your PayPal address is correct before you pay.
  • Considering the cost of business and easy shipping, usually the item is packed in retail packaging.

CountryShipping Time

Working Days + Saturday 
+ Sunday

5-78-1516-2021-2526-30>31
United StatesRate(item arrived)5.1%50.1%29.6%10.5%4.7%Refund
United KingdomRate(item arrived)9.9%63.2%19.1%3.4%4.4%Refund
AustraliaRate(item arrived)21.4%50.0%14.3%7.2%7.1%Refund
FranceRate(item arrived)10.5%28.6%43.8%10.1%7.0%Refund
GermanyRate(item arrived)11.1%22.2%30.3%20.9%15.5%Refund
CanadaRate(item arrived)0.0%47.1%31.4%17.6%3.9%Refund
SpainRate(item arrived)3.7%24.1%48.2%13.8%10.2%Refund
Terms
If this item is defective upon receipt, customer has up to 14 days from date of receipt for exchange of a new one.But buyers should be pay for the shipping charge for returning.
 
We care about our valued customers, and are always willing to work things out. If you have any problems, please e-mail us immediately.
Contact Us
If you have any questions, please feel free to send eBay message to us, our service specialists 24 Hours a Day, 7 Days a Week (maybe there is some delay in weekends).
 
Our aim is to provide Top Level Customer Service, normally so we will try our best to solve any problem.
 
Please DON'T leave negative or neutral feedback if you haven't received item in 30 days, because we have mentioned the shipping time repeatedly.
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