Hello all,
I am looking for the best class D in high frequencies from 1Khz to 20Khz from a 24V supply.
Low THD and 25W (8R) on a single channel is all I need.
I have tried old Tripath, TAS and TPA series from TI. All sounded OK, but I have not been blown away. The implementations I have used are quite basic I think.
Can anyone make any suggestions? I want to keep it off the shelf as much as possible but I am happy to make small modifications if it is very beneficial. Cost I am looking for less than 60USD if possible - so no Hypex unfortunately.
Many thanks to all in advance for your thoughts.
I am looking for the best class D in high frequencies from 1Khz to 20Khz from a 24V supply.
Low THD and 25W (8R) on a single channel is all I need.
I have tried old Tripath, TAS and TPA series from TI. All sounded OK, but I have not been blown away. The implementations I have used are quite basic I think.
Can anyone make any suggestions? I want to keep it off the shelf as much as possible but I am happy to make small modifications if it is very beneficial. Cost I am looking for less than 60USD if possible - so no Hypex unfortunately.
Many thanks to all in advance for your thoughts.
jasowat said:
The distortion due to the loudspeakers themselves is more dominant than that of the electronics, which is probably why you weren't blown away. If that's not the case then I think you need to try and recollect the last time you were, in fact, blown away and use that setup (and listening conditions) as a reference.
When I first tried out TDA8932 I found the higher frequencies rather harsh. Then I discovered the reason for this was the application in the DS didn't provide a clean enough supply for the analog signal stages. When I corrected this omission by giving the signal stages a regulated supply, the higher frequencies became very clean. I've not made a measurement of the THD though. Here's my design for a 25W/8R classD amp with a regulated signal supply separate from a regulated output stage supply : https://www.diyaudio.com/community/threads/transformer-input-tda8932-mono-amp.357678/
Almost all modern amps are flat within a fraction of a dB to 20K. You are either going to get low end junk, or go used for $60.
Dominant for sure, but different and I can't explain why. I can hear differences in equipment measuring .0X something, or even .000x, knowing full well my speakers are well over .5% at that level. Why? Discussion on ASR is impossible.
If your message is that the best dollar spent is always for speakers, I would agree fully. But Little boxes with lights on them are sexier. 🙂 A well executed Tripath is actually very good and until recently not equaled in the low end class D. The Topping PA5 has changed that equation, but not for $60
Possibly, but I don't know either. And, if the OP has extremely high standards, then the 60$ limit is just going to filter out all options .....
