This is an assembled board of a low pass filter design for addition of a subwoofer to the audio system. The low pass frequency and the low pass signal level can be varied continuous by two on-board potentiometer. The low pass frequency is adjustable from 50Hz to 150Hz. PCB dimension : 103mm x 88mm. We do air shipping worldwide at US$5.50.
Power Input : 12VAC x2 to 15Vx2 30mA.
For this item we do not provide schematic. As long as power is fed onto the board it can function.