Walker6string makes an interesting point. I have had problems in the past blowing the tweeters in my Thiels while playing them at high volumes for long periods. Luckly Thiel is customer friendly, offers a great warranty package (10 years) and will have a new replacment driver or tweeter at your door step in two to three days.
Also the setting up of those little guys is crucial (As mentioned above). You need to keep them off the back walls (At least 3') if possible. And try to fire them straight on not towed in or out.
Also the setting up of those little guys is crucial (As mentioned above). You need to keep them off the back walls (At least 3') if possible. And try to fire them straight on not towed in or out.