… Nowadays class D amps are limited in BW, quite miserably, even the Purify. To me, power amp must have BW > 100 kHz and I do not care what anyone thinks about…
I have a couple of Hypex 502s, and I am not sure one needs 100 kHz on a subwoofer, or on a woofer. How fast does it need to slew?
I also of the opinion that there is also no dishonour in mixing Class-D with Class-AB or Class-A… but it is difficult to do that with passive XOs.
In any case, how do the Class-D do feedback? What is the circuit layout?