For example, choose a power supply below 15V. You need a lower power supply voltage to prevent the speaker from burning after amplifying the sound. If your speaker has a low power, such as between 20W-50W, it can be used. The dive frequency of the subwoofer speaker must be at least 50 Hz. The subwoofer speaker cannot be connected to an ordinary speaker, and a speaker with a subwoofer speaker must be connected with a power between 20-100. The left and right channel speakers need to be connected to full-range speakers or mid- to high-frequency speakers, and the power is between 20W-100W. Regarding speaker types: commonly used speakers are generally 4-8 ohms, which can be used. When the volume is selected close to the maximum, it may be distorted and affect the sound quality. If you only have 9V12V or 1A 2A power supply, it can be used but the power is low. It is recommended to use a power supply of 18V19V24V with a current above 5A. If the current is too low, the speaker will pull down the voltage, which will result in abnormal operation or poor sound quality. If the voltage is too low, the amplified sound will easily cause sound distortion. If it is above 19V 5A, there is no problem with 8-10 inches, and the power supply must be highly regarded. The power supply is 12V1A and can be equipped with 34-inch speakers.
The higher the voltage, the greater the current, and the more adequate the output power.
A power supply with a large ripple will cause the bottom noise of the power amplifier board to become larger and there will be current noise. The ripple of the selected power supply must be small. The power supply with the board is very important. Please make sure that the power of the adapter power supply is greater than the actual working power of the amplifier! The higher the power supply voltage, the greater the output power, and the smaller the speaker impedance, the greater the output power. Tip: Only when the audio input is sufficient and the power supply voltage/current is sufficient, there will be sufficient output power. Protection Mechanism: Anti reverse connection. Output Power: Left and right channels <50W, Subwoofer <100W Power Range: DC 12-24 V / 5A above (Do not connect to 24V battery pack) Product Name: 2.1 channel audio amplifier moduleīluetooth Version: 5.0 (no shielding, 15 meters)Ĭhip Solution: Domestic power amplifier chip