[RFI] Sonos and RFI?

[Jim Brown]

Hi Eric,

HF RFI mostly couples via wires attached to the equipment. The only wire 
on these boxes is their AC power cable, which is 99.99% likely to be 
running an SMPS, which is in turn running a digital power amp. I would 
be VERY surprised if you don't hear RF noise from the SMPS. A serious 
ferrite choke on the AC cable should kill the worst of it, but there 
will be no fix for SMPS or digital noise radiated directly from the 
unit. A good design will avoid that by good circuit layout and 
construction.

73, Jim K9YC

  On 12/13/2017 4:03 PM, Eric Rosenberg wrote:
> Being that the speakers are amplified are powered, has any Somnos owner on
> this list had problems with RFI?