Article on Class A-D Amplification

[PeteJ]

For those like me who know nothing about this stuff, I found it (fairly) useful:

https://www.soundonsound.com/techniques/what-class-d-amplification

[agedhorse]

Except that the limitations on class D amplification are absurdly out of date (by maybe 20 or more years). 

In quality designs, these limitations are WAY to the right of the real world decimal point. In fact, it's possible to have HIGHER damping factors with class D not lower, the output reconstruction filters have almost no impact in the audio band due to the higher modern PWM frequency, and EMC/EMI ("radio noise") is very well under control as any commercial product is required by regulations/law to be compliant to strict standards.

[velvetkevorkian]

The article is 15 years old, in fairness.

[Marvin]

I got to the bit where the writer started explaining Class A and gave up. It made no sense at all, and clearly the writer shouldn't have stated that the reader need not worry if they knew nothing of electronics.

[agedhorse]

5 hours ago, velvetkevorkian said:

The article is 15 years old, in fairness.

I missed the date, hence their comments and conclusions being wrong for the times. 20 years ago, there were challenges, but electronic technology (especially power semiconductors) have come a long way since then.