Sorry you're having a problem, especially during this season of great music.
Since one speaker is only playing at 5% relative volume, that likely rules out sound cancellation effects as the culprit.
It wasn't completely clear from your post that you had systematically followed the usual means of isolating speaker vs. pre-amp vs. amp problems, so I'll just ask:
1. When you switch speaker wires between left and right channels, what happens?
2. When you switch preamp-to-amp interconnects between left and right channels, what happens?
Other Qns:
How did this setup fail, e.g., did it ever work in current configuration?
What about your grounds, and any power supplies?
Good luck. I'm betting that with the help from other A'goners here, you'll be able to come up with the solution.
...and without abandoning a separate pre and amp configuration!
Since one speaker is only playing at 5% relative volume, that likely rules out sound cancellation effects as the culprit.
It wasn't completely clear from your post that you had systematically followed the usual means of isolating speaker vs. pre-amp vs. amp problems, so I'll just ask:
1. When you switch speaker wires between left and right channels, what happens?
2. When you switch preamp-to-amp interconnects between left and right channels, what happens?
Other Qns:
How did this setup fail, e.g., did it ever work in current configuration?
What about your grounds, and any power supplies?
Good luck. I'm betting that with the help from other A'goners here, you'll be able to come up with the solution.
...and without abandoning a separate pre and amp configuration!