Design and simulation of audio amplifiers based on amplification circuits

This article introduce a circuit design method for audio signal two-way frequency division and power amplification, which utilizes amplifier circuits and active crossover networks. Two AD603 chips are used to achieve a gain of 46dB in the circuit and a common-collector amplification circuit is established to maximize the input impedance; High-pass and low-pass filter circuits are established using 2N3906 and 2N3904 chips, respectively. After software simulation testing, the design can achieve audio amplification function.