Sell AIYIMA Audio TPA3116 Bluetooth 5.0 Stereo Digital Power Audio Sound Amplifier Board Bass Speakers best price

ZK-1002E Specifications:Input power: voltage DC12-24V, current above 9AAmplifier output: MAX100W*2@24V/20Speaker parameters: 2-80; 40-200WInput sensitivity: 800mVSignal to noise ratio: >90dbFrequency response: 20Hz-18KHzBare machine size: 103mm*88mm*30mm (not including the height of the knob seat cushion)Package weight: about 350gPacking size: about 160*155*73mmZK-502E Specifications:Input power: voltage DC12-24V, current 5A or moreAmplifier output: MAX50W*2@24V/4Speaker parameters: 4-8Ω; 20-100WInput sensitivity: 800mVSignal to noise ratio: >90dbFrequency response: 20hz-18kBare machine size: 103mm*88mm*30mm (not including the height of the knob seat cushion)Package weight: about 335gPacking size: about 160*155*73mmInstructions:1. After receiving the product, please check whether the appearance is intact and whether the accessories are complete.2. The power amplifier output is connected to the speaker or speaker, R connects to the right channel, L connects to the left channel (note that the polarity of the speaker is not reversed, the sound will be muddy if it is connected).3. Connect the power supply (the power supply can only be connected to DC power, the voltage should not exceed 25V, and do not connect to the nominal 24V battery pack)4. Turn the volume knob clockwise to turn it on, there will be a Bluetooth notification sound, and the blue light flashes at this time.5. Choose the audio input mode that suits you to input audio. The audio input mode can only be selected from one of three, and cannot be activated at the same time. The audio input mode can be automatically recognized (automatically recognized with priority, USB input>AUX input>Bluetooth input), or manually switched (when multiple audio is connected at the same time, long press the pause/play button to switch the audio input mode) .6. Rotate the volume knob, treble knob and bass knob to adjust the volume and treble and bass gain to a suitable position.7, Quietly enjoy the happiness that music brings you.Common problem:Q: Why does the indicator light not light up after all the wires are connected?Answer: Turn the volume switch to turn it on. If it still does not light up after turning on, check whether the power supply is connected properly and whether the positive and negative poles of the power supply are connected correctly. If everything is right, find a laptop power adapter (power supply should not exceed DC25V) or 12V battery power supply to determine whether it is a power supply probl #Bluetooth #stereo #sound #Amplifier #speaker