Been out of the car audio loop for a while, but my guess is class H is a variant of class D, but better suited for full range applications (Class D was traditionally for low frequencies only).
Class A/B are inefficient and generate more heat, but they potentially have slightly better sound quality. Class D (and i guess H) generate less heat and draw less current as well.
__________________
2012 Mercedes C63 AMG P31 Sedan, ROW, aFe, Eurocharged Dyno Tune. 438WHP/415WTQ
2010 SOLD: 40th Anniversary 370z
|