Hello, I am having some issues with some studio monitors and have been lying around and I am trying to use them again. One of them creates no sound at all, the front light still illuminates though. The other appears to only play sound from the tweeter and not the sub. I have tried different inputs and different input devices with the same result. I will be trying to get them repaired, I am just wondering if anyone has encountered this before, as I'd hope they are not ruined.