We have a Velodyne sub. We have it connected with an adaptor cable from powerlink to what I believe is a 2 phono cable. It has a switch on it for Auto/On. We have it set to Auto.
Beovision 7-55 with Beolab 7-4, 9s and 4000s
Beovision 10-40 with Beolab 1s and 6000s
Beosound 1, 5, 2000, and 3000
Beotime, Beotalk, Beocoms