KEF KW1-RX Add-on receiver for KEF wireless subwoofer adapter kit at Crutchfield
KW1 Wireless Subwoofer Adapter Kit | KEF International
Episode® Wireless Subwoofer Kit
UPBRIGHT Adapter For Vizio VSB210WS Sound Bar Wireless Subwoofer Speaker System Power Supply Cord Cable Charger - Walmart.com
Amazon.com: BIC America WTR-Sys Wireless Transmitter/Receiver Kit for Hookup of Wireless Subwoofers and Wireless Powered Speakers, 8.30in. x 8.30in. x 2.20in. : Electronics
MartinLogan SW2-TRD Wireless subwoofer adapter kit at Crutchfield