ZK1002L 1002 100WX2 TPA3116 Mini Bluetooth 5.0 Wireless Audio Power Digital Amplifier Board Stereo Amp DC 12V 24V

RM1307731645749545

1, 5.0 bluetooth version , transmiion efficiency is higher, transmiion distance is longer. 2. Large size black gold heat sink ensures efficient heat diipation. 3, potentiometer to adjust the volume, with a switch, easy to control the volume, very suitable for DIY speakers. If it is a metal box, you need to draw out the bluetooth . 4. Copper DC connector is adopted to withstand high current and no heat. 5. 4*470uF green gold capacitor guarantees the power storage capacity and the continuous and stable power supply is the premise of good sound quality. 6. The DC head with cable can be compatible with the input power interface of this product. Even if you don't have the DC head adapter or battery, you can connect it easily. Notes for use: the power switch on the board is standby switch, and the machine is in standby state with low power consumption after the switch is turned off. To completely turn off the power or to remove the DC plug on the machine for a long time, it is ok. Question answers: 1. How to choose the power source? The board's power supply is crucial.The higher the voltage, the greater the current, the more power output, if you only have 12V 1A, this can carry 3-4 inch speakers.If you are above 19V 5A, with 8-10 inches no problem, power must be highly regarded.If the voltage is too low, the sound will easily cause distortion after amplification. If the current is too low to carry the speaker, the voltage will be pulled down, and the work will be abnormal or the sound quality will be poor. It is recommended to use 18V19V24V power supply with current above 5A.If you only have 9V12V or 1A 2A power supply, you can also use it with low power. Be careful when using it at the maximum volume, it may cause distortion and affect the sound quality. 2. How to choose the speaker? Common speakers are usually 8 s, can not distinguish between positive and negative polarity, the effect is the same, 4 s can also be used.If your horn power is small, it may be between 10W and 30W can also be used. The power supply voltage is small to prevent the speaker from burning down after playing loudly. For example, choose the power supply below 15V.If you are a 50w-300w speaker, don't worry about the speaker burning problem, you can choose a 12-24v power supply, the higher the selected voltage, then the greater the output sound or power. 3. How to connect bluetooth? Power up the power amplifier board, connect to the speaker, rotate the audio knob indicator light, turn on the phone Settings -- bluetooth -- search to "-wuzhi", and then click connect, after connecting succefully, there will be ding dong prompt sound, at this time for bluetooth mode, play music can, time on the power will automatically connect back with the phone. 4. It's ok if the sound is small, but when the sound becomes larger, the sound will be turbid. The sound has been distorted. Please replace the adapter with a higher voltage level. 5. It's ok if the voice is small, but when the voice becomes louder, the sound will slow down. The power of the input power is insufficient, and the power supply itself is intermittent power failure protection, please replace the power supply with higher power;Or the power is too large, the power amplifier plate heat serious, there is a thermal protection situation, reduce the power use or strengthen heat diipation.

About shipping
Shipping 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 remote areas,it may take a little longer). 

Special Announcement:
Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resolve the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties or taxes. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .

Your 100% satisfaction is very ant to us
If the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.