Radius 200 On-Wall Speaker (Single) Special Order Designed for rack or shelf mounting in a dedicated home theatre system. Placed front and centre in a serious AV system, twin 4" C-CAM mid/bass drivers astride a 1" C-CAM tweeter result in the compact Radius 200 anchoring the entire sound field with life-like fidelity. Frequency Response 60 Hz - 35 kHz Sensitivity (1W @ 1M) 86 dB Nominal Impedence 6 Ohms Maximum SPL 106 dBA (Pair) Power Handling (RMS) 150 W Recommended Amplifier Requirements 40 - 150 W Bass Alignment Bass reflex - rear ported Drive Unit Complement 2x 4" C-CAM bass/mid-range driver1x 1" C-CAM Gold Dome tweeter External Dimensions (Including Grille and Terminals) HxWxD 4 5/16" x 13" x 6 7/16" (125mm x 330mm x 164mm) Cabinet Dimensions HxWxD 4 5/16" x 13" x 5 1/2" (125mm x 330mm x 140mm) Weight (each) 7 lb 14 oz (3.6 kg) Sold As Single Unit