100W Ultimate Fidelity Amplifier

APEX AX14P 2PAIRS
 

Attachments

  • IMG_20180721_190714.jpg
    IMG_20180721_190714.jpg
    625.8 KB · Views: 1,183
  • IMG_20180721_160136.jpg
    IMG_20180721_160136.jpg
    979.4 KB · Views: 1,148
I do not want to hyack afcouse but only want to let see mine design class d amp, I did get extreme low distortion, using PI-integrater combination for linearization, and safe shift for doubling carrier, but do not now how it sounds yet. busy with a hybrid and circlotron, but now with our extreme summer here, I enjoy first.

Nice amp by the way, vertical mosfets? drive them with beefy drivers, get more sweet spot then.
 

Attachments

  • ScreenHunter_1319 Jul. 20 21.13.jpg
    ScreenHunter_1319 Jul. 20 21.13.jpg
    244.1 KB · Views: 1,004
I do not want to hyack afcouse but only want to let see mine design class d amp, I did get extreme low distortion,

I'm still learning LTSpice:

Is there a difference between running an FFT on the current (you have I/R16 selected in the screenshot) rather than on V/VOut at the load?

want to let see mine design

Do you have a schematic to share? It sounds quite interesting.

Cheers
 
for me its okay this amp tested whole night using karaoke player but nothings happens still singing loud and clear..thanks for your comments regards..

If you set bias current too low it is OK, and the amplifier work near class B. The crossover distortion become high. If you set the volume down and it SPL is so small but you can hear clearly, you will notice the distortion, especially in high frequency. But training people can easily hear the crossover distortion in any volume.