Since the cable was laid in an empty pipe, which also houses the Versorgungslitzen are laid for sockets I had due to inadequate shielding of the cable a classical 50 Hz hum on my subwoofer, which could not be resolved by a NF-noise filter.
In my case, the cable has its purpose in any case not met. (I have now installed a satellite cable and about my subwoofer connected, the shield is perfect and it is buzzing nothing).
Conclusion: If the cable is laid in the "free", without having other lines nearby, it may probably work.
