Railtones subwoofer provides additional bass support. Plugs into the wall and connects wirelessly to the railtones transmitter. Includes 4" driver. Railtones remote will also control volume on the subwoofer.
SubCasts allow you to make up to two subwoofers wireless. No programming, no assigning IP addresses, just plug Sub "out" into SubCast transmitter and power it up, then plug receiver module into subwoofer inputs and power it up. Subwoofers can now be placed anywhere in the room.