The speakers and subwoofer of the dead 5.1 from the BBK were connected to this device as 3.1 (to the central subwoofer). To watch movies just right, and even the wires were not required - the BT connects perfectly. Got pros: It works, BT connects, there are enough frequency settings for the channels - the sub is separate Has cons: At the maximum volume, it falls silent - you have to turn the volume up by 3/4 in order to control it from the TV set. The case is difficult to build in anywhere - the tips of the skewers are too short, I had to glue the outside to the subwoofer with double-sided tape. BP is not included.