Building a DIY 5.1 Audio Video Receiver – Part 3

The TDA7498 class D amplifier board that I purchased to power my front speakers was working great. The audio quality is at par with what my Pioneer 5.1 AVR delivered using class AB amplifier. I could not tell the difference in audio quality. None the less, I wanted to make sure the quality is really as good as my ears led me to believe. Enter a function generator and oscilloscope to make sure the frequency response is satisfactory over the range of audible frequencies (20 Hz to 20 kHz). If you don’t happen to know, a class D amplifier uses … Continue reading “Building a DIY 5.1 Audio Video Receiver – Part 3”