In this post I’m going to share some interesting electronic circuit of 3-way active cross over PCB Layout. The complete project files can able to download. The downloading link at the bottom of this article. The circuit is designed with TL071 op-amp IC. The active cross over board can able to separate the audio signals as per the nature of the audio signals.
The out put will be the High frequency – especially for the tweeter to work. The next is Mid frequency – The mid frequency is most important for the Human vocal clarity in the home audio system. The Third one is Low frequency cross over section – From this output stage only the low audio signals will be deliver.
What is 3 way crossover ?
The 3-way crossover, from the name it self is mentioning the meaning of 3-way passage of different type of audio frequency. The audio coming from the audio system is in mixed form of audio frequency, The 3-way crossover helps to separate these frequency and pass through the 3 different audio amplifier for more clarity and performances
The three way crossover is constructed as a combined circuit of High frequency, Mid frequency or Band pass frequency and a low pass filters. These are denoted as HPF, BPF, and LPF respectively. Each of these have own efficiency and working performance in the audio system.
Difference between Active crossover and Passive crossover
The crossover is in two type, Active crossover and Passive crossover. These two type of crossover is working based on different ways. The passive crossover didn’t need any external power supply. The active filter need an external power supply.
passive crossover is connected at the out put stage of the amplifier which may reduce the performance of the amplifier. The active crossover connecting on the pre section of the amplifier audio amplifier input, so their is no power loss of amplifier.
Check how i build 2-way Passive Crossover circuit for center channel
3 Way active crossover PCB Layout
