I recently divorced the 15" driver from the main amp on my system to run it with its own amp, dsp and passive volume using paralleled speaker output from the main amp and voltage divider to knock it back to line level. This involved hunting round the house for spare interconnects to link the four components and I cobbled them together with cables as diverse as freebies and Audionote solid silver. It was no real surprise that there was an earth loop issue which the 15" driver revealed to the point of annoyance.


By pure coincidence I bought a number of Klotz 5000 cables from this site. They had earthed screen which to quote a song by Shania "that don't impress me much". Well I installed them without any great expectation primarily just to harmonise the cables.


The earth hum disappeared.