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Class D Switching Power Amplifiers and Power D/A conversion

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Old Today, 08:46 AM   #811
JMF11 is offline JMF11  France
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I was reading recently some talk from Nelson Pass where he developed some elements about differences in amplifiers, and in the nature of the respective distortions, and what I understand as possible to interpret as positive aspects of second and third harmonic distortion as pleasurable colour.


Would be fun to artificially "inject" second and/or third harmonic distortion between the neutral DAC and the neutral 0.001% THD power amplifier stage (I'm pretty sure not to be the first to have this idea).


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Old Today, 09:19 AM   #812
IVX is offline IVX  Ukraine
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And this one trick I also have tried, 2nd harmonic become noticeable from .5-2%, and it is not really warm or sweet or whatever how called it NP. It is rather weird sounding for me )) If you want to try, make my ADAU1701(I hared that design somewhere on diyaudio.com) demo-board and add 2nd harmonic. A lot of myths regarding sweet harmonics or about their sweet distributions but what I really believe that the power supply strongly affecting the sound, in many cases a power supply is contributor #1 into the sound.
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Old Today, 01:42 PM   #813
matt_garman is offline matt_garman  United States
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TPA3255 - all about DIY, Discussion, Design etc.
Quote:
Originally Posted by JMF11 View Post
Would be fun to artificially "inject" second and/or third harmonic distortion between the neutral DAC and the neutral 0.001% THD power amplifier stage (I'm pretty sure not to be the first to have this idea).
Mastering engineer Bob Katz did exactly that with his "Blender": Katz's Corner Episode 25: Adventures in Distortion. (Link credit goes to Alexandre in this post.)
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