Make your Speedwoofer 10S MKII wireless with RSL’s AT-4 wireless transmitter. Good for up to 50ft. Going wireless makes installation and finding the right location, a breeze. The signal does not require “line of sight” connection and should fit into environments without issue. Going wireless does not sacrifice sound quality. Keep in mind that you can use a single AT-4 transmitter to connect up to (4) Speedwoofers simultaneously! Best of all, the AT-4 is backwardly compatible with AT-3 generation 10S Speedwoofer models.