I just purchased some used LSi9's and had a question about them. When I listen to each driver with the volume low, it sounds like one of the woofers is louder than the other. I was thinking maybe one was not working and running as a passive radiator but I took it out and it does work. I purchased the speakers without being able to hear them so I had to check them out at home. I think both the LSI9 do the same thing and just found it odd and I wanted to see if thats normal.