class d amplifier

I have created my own Class D amplifier based 2.1 Karaoke Music System using ready to connect modules according to the following diagram to create the music system. I have used probably three very common modules which many of you may already be familiar with. I am still linking sample Amazon...

Hello, I hope you're all doing well. I'm putting together a sound system for my room. It has two power amps: one for two normal speakers and the other one for a subwoofer. I have put a pre-amp with the power amp that's gonna filter the sound going to the subwoofer. The whole system is powered...