My KEF Kube-2 subwoofer failed, lets see why - YouTube
KEF Kube-1 Powered Subwoofer for sale online | eBay
RussAudio - Repaired a KEF Kube 1 subwoofer. Fault reported:- Doesn't power up. Confirmed as described. Removed power module for inspection/repairs. Checked over for degrading/distressed components and solder joints OK. Removed several