A step-by-step tutorial to add any inexpensive powered sub to your Sonos system with an Ikea Symfonisk or any Sonos speaker (Playbar, Beam, Play1, Play 5, etc.). Great to adding bass to your Sonos home theater system with an Arc, Beam, Playbar, or Playbase. I tried to cover every question people asked me in the comments over the last 6 months. I cover: adding a sub to a stereo setup, home theater system, creating a room for the sub, and bi-amping a passive two-way speaker with the Symfonisk electronics. Speaker to RCA converters: Kicker - http://amzn.com/B00I4EF1BC Pyle - http://amzn.com/B000ES9QNA Rockford Fosgate - http://amzn.com/B009B8EJYU SCOSCHE - http://amzn.com/B00009UHRE