Do I need the same cable length for all boxes? Teufel Support November 25, 2022 08:07 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? How do I mount banana plugs correctly? ROCKSTER: The protective edges are damaged. Are there any replacements?