NO SOLDERING: Coupler Style Connectors Provide Easy Connections To Front & Back Of Wall Plate The subwoofer connection is an RCA connection on the front and an RCA connector on the back. Accepts banana plugs and bare wire, and HDMI 1.3 b connections Allows connection of up to 7 speakers, 1 subwoofer and 1 HDMI device. Dedicated labeling on the front plate. Use with banana plugs, spades or bare wire. Installs in a NEMA 3-gang box. Comes with all necessary screws. One 3-Gang low voltage mounting bracket.