Type: On-Wall/In-Wall 4.7" Shallow Profile Speaker, Design: 2 wayDriver Size : HF 1" dome tweeter, LF 2 x 5" woofer 2 x 5" high- compliance passive radiators, Amplifier Power: 100 - 200 watt, Nominal Impedance: 8Ω, Sensitivity : 88dB, Frequency Response : 56Hz-22kHz , Dimensions (WxHxD):313mm x 770mm x 121mm, Mounting Options: Key-hole bracket fitted, Accessories:IWO WB 71 (optional On wall bracket) sold separately.Weight:10.9kg