I really don't think it's the speaker cables, although Lloyd Walker and others make RFI-killing doohickeys you can put across your speaker terminals. And Purist Audio's Dominus and Venustas (even Musaeus) have enough Ferox shielding to keep out any RFI, so you might want to audition a pair.
But I honestly think the problem is elsewhere. When this does occur, does it occur across several sources (or is the EMM stuff your only source)?
But I honestly think the problem is elsewhere. When this does occur, does it occur across several sources (or is the EMM stuff your only source)?