<p>Only when the audio input is sufficient and the power supply voltage\/current is sufficient will there be enough output power. If the power supply voltage is higher, the relative power will be higher.</p> <p>Speakers with different impedances will have different output powers.</p> <p>In the case of sufficient voltage and current, the larger the ohms of the speaker, the smaller the relative sound power, please pay attention!</p> <p>voltage:</p> <p>12V ------- 8 ohm speakers\/12W (left channel) + 12W (right channel) 4 ohm speakers\/20 (left channel) + 20W (left channel),</p> <p>15V ------- 8 ohms\/18+18W, 4 ohms\/ 30+30W,</p> <p>19V ------- 8 ohms\/32+32W, 4 ohms\/ 45+45W,</p> <p>24V ------- 8 ohms\/38+38W, 4 ohms\/ 55+55W,</p> <p>Product name: 2.1 channel audio amplifier board</p> <p>Supply voltage: DC12-24V</p> <p>Output power: 50w*2+100w subwoofer*1</p> <p>Output load: 4-8ohm</p> <p>Frequency response range: 14-100KHZ</p> <p>Number of channels: 3 (left channel + right channel + subwoofer)</p> <p>Switching frequency: 1.2MHZ</p> <p>Colour:orange</p> <p>Material: PCB</p> <p>Size:100 x 70 x 30mm</p> <p>Package Contents:</p> <p>1 x digital power amplifier board</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>