27 ms·The motor is a bunch of big Ls, and the Cs are already used to feed the chopper.by CarVac 2y agoThe motor is a bunch of big Ls, and the Cs are already used to feed the chopper.amelius 2y agoA class D amplifier + speaker has a very similar circuit topology, yet here we apply filtering all the time ...bmicraft 2y agoSomeone might argue that for a speaker the sound is more important than efficiency or even price (per unit of power output)