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Class D is just Dandy!

I thought it was time we had a pro- Class D thread. There's plenty of threads about comparisons, or detractors of Class D.

That's fine, you don't have to like Class D amps, and if you don't please go participate on one of those threads.

For those of us who are very happy and excited about having musical, capable amps that we can afford to keep on 24/7 and don't require large spaces to put them in, this thread is for you.

Please share your experiences with class D amps!
erik_squires
randy-11
1,913 posts
 
higher switching frequency moves it further from the range of human hearing and enables "kinder, gentler" filtering
georgehifi's avatar
georgehifi
10,312 posts
 
randy-11
higher switching frequency moves it further from the range of human hearing and enables "kinder, gentler" filtering

+1 many times over Randy, seems like your one of the few that get it here!

Just to add to that, the "gentle" filter is on the output speaker terminals, and has to take the full grunt (wattage) of what the amps gives out, it has to be "gentle" (low order), if complex it would soon fry up.
Or as Mark Levinson tried with $$$$ the No. 53 monoblocks, a higher order filter and massive to take the grunt, (as you can see by the 4 x chokes on each monoblock), but that has problems also as well as expensive, it wasn’t received very well.

http://www.stereophile.com/images/1212levin.side.jpg

Cheers George
erik_squires OP
16,416 posts
 
Always fun to talk tech.... but I've been living with dreamy sounding amps for a while now. I don't need my switching frequency increased to have the best.

E
georgehifi's avatar
georgehifi
10,312 posts
 
I'll lay money on it Eric your the one of the first to change to the higher switching speeds when they come available/affordable, hopefully soon, judging by Technics lead in this area of higher switching speeds.
 
I know I will sell my inefficient, hot, heavy, boat anchors just before it happens, before they become worthless, as will today's Class-D amps.

Cheers George
randy-11
1,913 posts
 
I always thought the gentle filter slope was b/c steep "brick wall" filtering caused audible distortions...

I do agree that the amplifier is the closest component most of us have that is near perfection.  Speakers, room tmts, DACs, source material... all are in more need of improvement on a relative basis.
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