Products from the USA may come with an input voltage of 110V–120V, requiring a step-down transformer. Check the device wattage to select the correct power converter.
•Working voltage: DC7-15V (DC input does not need to be divided into positive and negative, because the power input has a rectifier circuit), AC5-12V
•Frequency adjustment range: around 22HZ-280HZ (note that no human voice can be heard at this frequency)
•Board size: 50 * 50MM,Distance between two potentiometers: 30MM
•The subwoofer board is powered by a single power supply and has a built-in dual power conversion chip.
•Two input 2.54mm headers: two sockets are connected in parallel, the stereo sound source is input to one of the sockets, and the other socket can be used as an output (connected to 2.0 power amplifier or 2.0 tones), which is convenient to form 2.1 channel wiring .
