The real advantage of using a class D amp, especially TPA3122 is the fact that this IC doesn’t need a heatsink because it has a high efficiency. Another great thing about it is that you can buy a $20 ...

C Z = 1 / (2 * π * f C * R L). Where R Z is the Zobel resistance and C Z is the Zobel capacitance, R L is the impedance of the loudspeaker, f C is the desired cutoff frequency. For our 27.4-kHz ...

Sincea Class D amplifier has an output that switches between on and off, thenoise created by that switching must be filtered out. "You just have tobe careful with the filter design and circuit ...