I would not say so. There are arguments in the video, I do not have enough knowledge to judge their validity.
His two points are the class d open loop performance and output filter distortions, as admitted by Bruno Putzeys, as inferior to AB amps. Seems he didn't get the memo that Bruno's designs aren't run open loop and that the feedback corrects both of these issues.
Exactly my point. You have to watch the video to know what is being discussed with no precis. clickbait
30-year-old designs didn't sound great, no. But if you have $5 to your name, you can buy a 40W Class D that has a THD+noise of 0.01%. And that's a lower end device.
Here's one for example: https://www.mouser.com/ProductDetai...es/MA12040XUMA1?qs=qSfuJ%2Bfl/d6NJkYOb7QZag==
Here's one for example: https://www.mouser.com/ProductDetai...es/MA12040XUMA1?qs=qSfuJ%2Bfl/d6NJkYOb7QZag==
Eh? Yes? Not sure what you're referring to. My point is that the big issues surrounding Class D have been solved. I did a lot of digging into what companies like TI, AD and Maxim are up to when I designed my own modest little amplifier, and Class D amplifiers is an area of a lot of cutting edge research with huge breaktrhoughs over the last couple of decades.
Sukhov is missing that D-class amp load is always in bridge, what increase PSRR a lot.
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Balanced-construction speaker crossover??
Differential amplifier construction from the amplifier input??
Differential amplifier construction from the amplifier input??
The feedback fix is indeed a thing to alleviate the load dependency of these amps, sadly it's only in higher priced units. Still a massive amount of cheaper amps giving people HF boosts if their speakers present a particular load. Some good A/B amps were just cheaper than the class D with feedback filter so I've switched to those for now.
I'm pretty sure most modern Class D amplifiers have some kind of feedback. Or are you referring to post-filter feedback?
You'll find my measurements of that amplifier (FFA001V3) from post#519 to #538.
Finally designer revealed it's a post-filter FB implementation.
https://www.diyaudio.com/community/threads/2x150w-amp-module-for-sale.388868/post-7086291
Price is for the stereo class D and it's onboard SMPS
George
Old dvd home cinema with class D ( DDX STA505 or discrete class D Souded good as I remember ).
I have listened to TPA3116D2, my board sounds ok but lacks in the highs , maybe poor filters on the board, or to low cross point.
I have listened to TPA3116D2, my board sounds ok but lacks in the highs , maybe poor filters on the board, or to low cross point.
