Soundstream TWS.4 1-Inch Aluminum Tantalum Dome Tweeter, Set of 2 1 Aluminum Tantalum Dome Tweeter,100w 4-ohm Rated Input Power: 110W Polished Aluminum Housing Dual-Mounting  surface or angle Built-in 12 dB In-Line Crossover Freq. Resp. 5KHZ-25KHZ,SPL 95dB