Do I need the same cable length for all boxes? Teufel Support May 07, 2022 07:18 Updated Up to a length of 15 meters, there is no sonic difference with different cable lengths according to our experience. Related articles Stereo speakers: Which amplifier goes with which Teufel stereo speaker? Contact Teufel Customer Service - Phone Number What are the advantages of connecting a second subwoofer? Where & how can I listen to Teufel products? Inquiries about sponsoring, press, marketing & more.