Joia, thank you for your reply. I was able to get the amp “working” by changing the wiring from stereo to mono.
+ - + - to + + - -
Doing this allowed sound to come out of both speakers.
However, I have no idea why the amp suddenly decided to change it’s mind about the wiring I had in place for over 6 months. It seems like it suddenly was expecting a mono wiring connection.
Good question - I do not know. My passive speakers are on my patio and are not high end. They sounded fine when I did the re-wiring and there was no obvious sound issue.
I’m still perplexed as to how it could have suddenly changed. It makes me worried that something else will fail down the road. I’ve reached out to Arylic support and no response yet.