Brand NEW! Including 90 Days USA Factory Warranty. The Dayton Audio TD20F-4 uses a 3/4" silk dome to produce smooth response with excellent dispersion. At only 2-1/2" diameter and just over 1/2" deep, this tweeter is ideal for use in any compact design. Key Features 3/4" silk dome provides articulate yet non-fatiguing high frequency reproduction Exceptionally flat and smooth frequency response Ferrofluid for improved power handling and damping Neodymium magnet low-distortion motor system Dayton Audio's TD20F-4 3/4" silk dome tweeter incorporates an optimized diaphragm that combines low mass, superb damping, and a carefully calculated dome profile offering an exceptionally flat frequency response. This, along with the low distortion neodymium motor system, ensures that high frequency content is reproduced as transparently as possible. Product Specifications Cone / Dome Diameter 0.75" Cutout Diameter 1.69 Tweeter Type Soft Dome Power Handling (RMS) 20 Watts Impedance 4? Frequency Response 3,000 to 20,000Hz Sensitivity 90dB 2.83V/1m Thiele-Small Parameters Resonant Frequency (Fs) 1696Hz DC Resistance (Re) 3.4? Mounting Information Overall Outside Diameter 2.56" Depth 0.59" - All international buyers are responsible for all tax, duties and/or customs fees.