ZK-502L Mini Stereo Bluetooth 5.0 Digital Audio Power Amplifier Board 50W*2

Strong compatibility with various speakers
Knob potentiometer design, easy to adjust the power on and off
With reverse connection protection, over-voltage protection, under-voltage protection, over-temperature protection, short-circuit protection.
Self-recovery overheat protection.
Widely used in modified speakers, power amplifier devices and car Bluetooth devices.
 
Specification
Product number: ZK-502L
Bluetooth version: 5.0 (unlocked, 15m)
Adaptable power supply voltage: 5~24V (9V/12V/15V18V/24V and other adapters are optional, high voltage is recommended for high power)
Number of sound channels: left and right dual channels (stereo)
Adapter speaker: 30-200W, 4Ω, 8Ω
Adapter power supply: DC15~36V (below 9v undervoltage protection, can also support 12v power supply)
Power supply voltage: 12v-8Ω speakers / 12w (left channel) + 12w (right channel)
4Ω speaker/20w+20w
15V-8Ω/18+18W, 4Ω/greater than 30+30W
19V-8Ω/32+32W, 4Ω/greater than 45+45W
24V-8Ω/48+38W, 4Ω/greater than 50+50W
Protection mechanism: self-recovery overheat protection, self-recovery short-circuit protection
Product size: 74x38x22 (mm)
 
Note
Only when the audio input is sufficient and the power supply voltage/current is sufficient, there is sufficient output power. The higher the supply voltage, the higher the relative power, different sound speakers will have different output power. When the voltage and current is enough, the bigger the speaker, the less relative sound, please note!
 
List
1 x Amplifier board
1 x DC cable
1 x Enclosure kit

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Am 10.11.2022 hat der Verkäufer die folgenden Angaben hinzugefügt:

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