So i just put together a sure electronics TPA3122 amplifier the other day. I have found that if you power up the amp to fast it goes into some sort of protection where it just clicks. If you build this amp and are having the same problem, try turning it off and on again or finding a way to apply power to it a bit slower (seems to be more of a problem when you use a higher V to power the board).
Other then that the amp is working fine but I'm not sure what I should be using as a power supply and what voltage I should run it at for the best sound.
When I power the amp up and I connect my oscope to the power and ground I can see that my power rails are directly being affected by the audio source. I also see what looks like switching noise when no audio is playing. Is this normal?
So far I have tried a 12V smps wallwart, a 29V regulated linear supply and a meanwell 24V smps (lots of clicking problems). I am seeing this on all the supplies. Should I be concerned on how modulation of the power supply lines will affect the sound of the amp or is this normal? I have only built class a amplifiers up to this point so I am not use to seeing this from an amp.
Other then that the amp is working fine but I'm not sure what I should be using as a power supply and what voltage I should run it at for the best sound.
When I power the amp up and I connect my oscope to the power and ground I can see that my power rails are directly being affected by the audio source. I also see what looks like switching noise when no audio is playing. Is this normal?
So far I have tried a 12V smps wallwart, a 29V regulated linear supply and a meanwell 24V smps (lots of clicking problems). I am seeing this on all the supplies. Should I be concerned on how modulation of the power supply lines will affect the sound of the amp or is this normal? I have only built class a amplifiers up to this point so I am not use to seeing this from an amp.