For smaller sets up to Theater 1, we recommend using the 2.5 mm Teufel speaker cable for optimum listening quality if the required length of 15 meters is not exceeded.
For Theater 2 and the larger systems, we recommend the Teufel cable with a 4 mm cross-section for the front/centre speakers and the 2.5 mm cable for the effect speakers up to a length of 15 meters.
For even greater lengths, a higher cross-section would also have to be selected here.