Hi,
I have built a TDA7293 amplifier. I find it's sound satisfactory at low volume levels. At high volume levels it's not satisfactory. It's starts sounding very similar to my AVR (which is based on class D amplifiers). I hear what I presume is distortion or noise and there is a high listening fatigue. Since this chip is known to have the audio quality of a typical class AB amplifier, I think something's obviously wrong.
I am using polyster film capacitors in signal path. Transformer and supply capacitors are overpowered, so no worries there. There are power supply decoupling disc capacitors as suggested in the data sheet.
The only thing that's different is I have soldered components on a universal solder-board instead of a usual PCB. Does anyone have a similar experience?
I have built a TDA7293 amplifier. I find it's sound satisfactory at low volume levels. At high volume levels it's not satisfactory. It's starts sounding very similar to my AVR (which is based on class D amplifiers). I hear what I presume is distortion or noise and there is a high listening fatigue. Since this chip is known to have the audio quality of a typical class AB amplifier, I think something's obviously wrong.
I am using polyster film capacitors in signal path. Transformer and supply capacitors are overpowered, so no worries there. There are power supply decoupling disc capacitors as suggested in the data sheet.
The only thing that's different is I have soldered components on a universal solder-board instead of a usual PCB. Does anyone have a similar experience?