Mosfet Amplifier Circuit For Subwoofer. In this project i will make a special power amplifier for the subwoofer speaker that i use for a power amplifier circuit that is power socl 500w which use 2sc5200 and 2sa1943 final transistor 1 set pair. The audio signal is filtered by the sallen key low pass filter using the opamp such that only frequencies below and equal to 200hz are passed and remaining filtered.
Irf250 mosfet amplifier 200w irf 250 amplifier circuit diagram. Nov 19 2018 explore zdravko kostadinov s board 100w hi fi power amplifier with 741 bg on pinterest. The amplifier has a low distortion of 0 1 a damping factor greater than 200 input sensitivity of 1 2v and the bandwidth is from 4hz to 4 khz.
This post about the 1000w mono power amplifier using 2sc52000 transistor and 2sa1943 as the final transistor.
Subwoofer home theater amplifier circuit is designed for subwoofer speaker system that used on subwoofer home theater system using ic lm324 as a based filtering subwoofer signal input and as a buffer it s power amplifier. The amplifier can be also used as a sub woofer amplifier but a subwoofer filter stage has to be added before the input stage. Nowadays it is used as a power subwoofer amplifier driver board. This low frequency signal is given to the input of the transistor q1 through the coupling capacitor c3.
