I’ve tried again - I reinstalled Raspbian and then the Pimoroni code to drive the speaker phat, but the sound is still bad, i.e. very crackled and the words pretty much inaudible.
Before I installed the speaker code, I was able to play sounds / music via HDMI and that sounded fine.
Is the above enough to get the speaker working, or do I need to install anything else?
It seems unlikely that 2 speaker cards would be damaged, but maybe they are? If no one has any software options to try, I’ll send them back.
Just to demonstrate what they should sound like, has anyone got a video of a Speaker pHat playing the demo sound that is installed with the Pimoroni software?