At how many Hz do I have to disconnect my tweeter in active mode?

Depending on the model, a high-pass filter should be used. The recommended crossover frequency for tweeters is between 2500 Hz / 2.5 kHz and 3500 Hz / 3.5 kHz, depending on the model and size. Smaller tweeters should be cut off even higher. Please contact one of our ETON dealers or our customer support, we can tell you the exact frequency for your model, for various systems this information is also included in the manual.