Just sent a message to tech support but thought I would try here as well.
Just finished installing five pair of RC80i speakers throughout the house. While testing the fourth pair the sound quality was extremely poor. I suspected my wiring and after checking all connections swapped the pair out with one of the others. The audio quality returned, which means its a speaker problem.
To my ear it sounds as if the tweeters are not enabled at all. There are no highs to speak of, and the phenomenon exists in *both* speakers, not just one.
Any ideas? Am I missing something here? Could it be that both speakers left the factory without the tweeters 'enabled'?
Thanks for all comments!