No, it is headphones, the most efficient. It doesn't need any heatsink, battery powered still has a long life😱
.
Still I am interested in mixture😀
Like this one:
http://www.diyaudio.com/forums/soli...-hybrid-linear-switching-power-amplifier.html
.Still I am interested in mixture😀
Like this one:
http://www.diyaudio.com/forums/soli...-hybrid-linear-switching-power-amplifier.html
ClassH is 8-10% more efficient than a good class AB design.
No MUCH more.
And less distortion compared with any switching amplifier design, even ClassI.
Last edited:
"ClassH is 8-10% more efficient than a good class AB design."
True, when driving sine waves.
On music with a high peak-to-average ratio it's a different story.
Have you ever been inside a Carver M1.5T?
2x 600W/4R and NO HEATSINK.
Distortion?
On music with good program material and associated gear it sounds at least as good as well respected class AB designs. The non-inverting version of the Carver M1.0T sounded even better than the M1.5T
With the better commutation diodes available today these designs can be even better (than the older designs).
There are of course poor designs of all types. A class H design from NAD didn't sound that good, even though you were listening well below the transition point (the lower rail was ±60V, enough for 400W/4R peaks while still in class AB).
True, when driving sine waves.
On music with a high peak-to-average ratio it's a different story.
Have you ever been inside a Carver M1.5T?
2x 600W/4R and NO HEATSINK.
Distortion?
On music with good program material and associated gear it sounds at least as good as well respected class AB designs. The non-inverting version of the Carver M1.0T sounded even better than the M1.5T
With the better commutation diodes available today these designs can be even better (than the older designs).
There are of course poor designs of all types. A class H design from NAD didn't sound that good, even though you were listening well below the transition point (the lower rail was ±60V, enough for 400W/4R peaks while still in class AB).
A 3-Tier Class-H cuts the waste heat by as much as 30-40% when loaded with music program signals compared to Class-AB. Try it you will see.
Plain wrong, The heat dissipation in class-H is almost halved when compared to similar power class-AB.
Typical class AB makes about 40% of waste heat of its rated output, 100W out = 40W waste heat.
Pure class B (with a regulated supply) is about 22% heat.
A three-rail design is about 13% heat.
Pure class B (with a regulated supply) is about 22% heat.
A three-rail design is about 13% heat.