JBL Studio 210 2-Way On-Wall Surround Loudspeaker (Pair)) JBL Studio 210 On-Wall Surround Speakers feature a 4" PolyPlas driver, delivering an unrivaled midrange accuracy and power A 1" CMMD Lite high-frequency driver brings cinema-grade sound to your listening experience High Definition Imaging (HDI) waveguide creates a wide soundstage with pinpoint imaging Visually Striking 21st Century Design Integrated Keyhole Brackets for Wall Mounting