ZK-502H HIFI Bluetooth 5.0 TPA3116D2 Digital Power Audio Amplifier board 50WX2 Stereo AMP Amplificador Home Theater AUX USB
Product name: HIFI level 2x50W Bluetooth 5.0 power amplifier module
Chip scheme: TPA3776D2 (with AM interference suppression function)
Audio input: Bluetooth+AUX+U disk+computer USB sound card (plug and play)
Adapter power supply: 9-24V (high voltage is recommended for high power)
Adapted speakers: 10-100W; 4-8Q
Number of channels: left and right dual channels (stereo)
Bluetooth version: 5.0 (>15 meters, unobstructed)
Protection mechanism: overvoltage, undervoltage, overheating, DC detection, short circuit protection
Product size: 60x60x29mm
Product weight: about 104g (including packaging)
Tip: Only when the audio input is sufficient and the power supply voltage/current is sufficient, there will be enough output power. The higher the power supply voltage, the higher the relative power, and speakers with different impedances will have different output powers. In the case of sufficient voltage and current, the larger the horn ohms, the smaller the relative sound power.
Power supply voltage: 12V-----8 ohms/12W (left channel) +12W (right channel), 4 ohms/20W+20w
15V-----8 ohm/18+18W, 4 ohm/30+30w
19v-----8 ohm/32+32W, 4 ohm/40+40w 24V-----8 ohm/38+38W, 4 ohm/50+50w
How to choose a power supply?
The power supply for the module is critical. The power supply requires small output ripple and low internal resistance. The higher the voltage, the higher the current and the better the output power. If yyou 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 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 18v 19v 24v power supply with current above 3A. If you only have 9v 12v 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.