With the Mackie PPM608 Mixer, our passive speakers aren't working. We use CVi-252s, but I'm sure it's an issue with the mixer rather than the speakers.

We've had this same set up for a year with no issues. I checked wires, no issue. When plugging into the mixer only 1 speaker works, the one plugged into the speaker out A output. The speaker out B output doesn't work. There's also static from the one working speaker. The mixer also won't adjust volume/gain, so we had to do that from the computer for the one speaker. The lights on the front of the mixer also aren't showing up with the gain, but the green power sign is still lighting up. Please let me know if you have any ideas to fix this! The mixer was working fine a week ago, last time it was used.