Amazon.com: REL Acoustics Airship™ Wireless Subwoofer Transmitter Created for 212/SX, S/510 and S/812. Compatible with G1 Mark II. Not Compatible Serie T/i, Serie HT, Legacy Serie S or No.25. : Electronics
REL Reference G1 Mark II Subwoofer Now On Demo! - Hifi Lounge
REL Acoustics Gibraltar G1 Mk II Powered Subwoofer; Mark II - The Music Room