I am working with SSM2529 but I had some problems.
1. When I play audio file sine (1khz_44100_mono_30s.wav) to test. After that I'm using OSCILOSCOPE to view on OUPUT pin (OUTP + OUTN) of SM2529. It's not sine wave, I see square wave (rising1111ws450.png).
2. When I adjust volume louder (maximum) then speaker is quite noise.
I also attach audio file and wave form which I capture from OSC.
I attach SSM2529 schematic connection. As for the load, I'm using speaker (8ohm, 2W).