This morning I came to play my music via. Roon as normal and I noticed a lot of distortion on mid-highs in the right speaker. At first I thought it was just me (I’d not yet had my morning coffee) but it became increasingly obvious something was wrong. So, to cut a long story short, the KEF’s appear to have developed a fault in the right speaker. There isn’t any noticeable noise from the speakers when music isn’t playing. It is only when the drivers are having to produce sound that the distortion is audible. This suggest to me that’s something has happened to the tweeter driver? I’ve no idea what as nothing has changed overnight.
To be absolutely certain it wasn’t something else I’ve spent the best part of today troubleshooting (trying Roon and Audirvana, ethernet/optical/USB inputs) and the issue is there in all cases.
@DarwinOS I think this was slightly different to your issue?
Anyway, I am now waiting to hear back from my dealer. But, for now, it looks like these will be going back. I’ve only had them 6 weeks.