Hacking the Ikea Symfonisk Sonos Speaker to Save $$$ - YouTube
The Cheapest Way to Add a Subwoofer to a Sonos System: Use an Ikea Symfonisk! - YouTube
Ikea Symfonisk Sonos hack - USB C power delivery : r/sonos
Hacking Sonos: How one maker created a better music experience with his Raspberry Pi #piday #Raspberrypi @Raspberry_Pi « Adafruit Industries – Makers, hackers, artists, designers and engineers!