O.K. here's the story. I had a rare weekend off from my regular job, so took them to the American Legion. It was a cold rainy night and I didn't expect many people there, so a good chance to try them.
I must add, I had them set up at home for two weeks and had them on at least four hours every day, with no problems. I pushed them hard too.
Anyway, I set up at the Legion and they sounded great for the first set. Then one of them quit. I turned it off and on, I changed cords, changed channels on the mixer, and checked all the regular things. No help. Then I unplugged from the line in and plugged into the mic in, and it worked fine, for a while, then quit again.
I panned everything to the other speaker and turned the left one off. After I took a break, I turned the left one back on and it worked fine for about an hour, then went out again. I feel it is a solder joint or something on the input that is causing the problem. I had something similar happen some years ago with a brand new Peavey and that's what it turned out to be.
The rest of the night was the same. It would work for a while then the sound would stop. It didn't go off, just quit producing sound.
The last set it worked fine, maybe because I turned the volume down some? I don't know.
I will phone the company and see what they suggest. I'm not ready to give up on them, because they really did sound good.
I don't think anyone in the audience noticed that part of the time I was only using one speaker.
I suppose that's the good thing about having two powered speakers, if one goes out you CAN make it with the other.
I usually have a backup system (Logitech) in the car, but didn't this time.
I wouldn't panic because of this. I have had problems with much more expensive gear in the past also.
I will get it replaced and try again.
DonM