hmmm, i really hope it is a cable or something , the woofers are worser, but still replacable, the crossover on the other hand might be a real tough one,

the woofer in the other speaker is functioning eh?
i don't know for sure, but i believe the thiels have a seperate crossover part for the woofer, there might be something wrong with the crossover, but really i hope it's something simple...

let us know what you find out...