Brand NEW! Including 90 Days USA Factory Warranty. Dayton Audio's compact, ultra-smooth ND25FA-4 soft dome tweeter features excellent detail and high power handling. The small faceplate and neodymium motor make it easy to keep center-to-center distance to a minimum for improved off-axis response, and the exceptionally flat response above 3 kHz. Key Features Exceptionally flat treble response with low distortion Compact round faceplate design is simple to install High-strength neodymium motor with heatsink and ferrofluid cooling Perfect for placement in car A-pillars 1" diameter voice coil for good off-axis dispersion and excellent power handling Clean, modern styling and appearance This tweeter is smooth! The Dayton Audio ND25FA-4 1" soft-dome tweeter combines an exceptionally flat response above 3 kHz with a compact round faceplate for a clean, modern appearance that integrates easily into any design. The tiny yet powerful neodymium motor structure features an aluminum heatsink and ferrofluid cooling for low power compression and improved long-term power handling. A copper pole cap within the motor further reduces distortion and inductance effects. Choose the ND25FA-4 when you need detail that won't become fatiguing or shrill at high volumes, for a highly refined presentation. The compact faceplate allows close center-to-center spacing of drivers, making these tweeters perfect for line array use or D'Appolito (MTM) configurations with wide dispersion. Product Specifications Cone / Dome Diameter 1" Cutout Diameter 1.77 Tweeter Type Soft Dome Power Handling (RMS) 20 Watts Impedance 4? Frequency Response 2,500 to 20,000Hz Sensitivity 90dB 2.83V/1m Thiele-Small Parameters Resonant Frequency (Fs) 1350Hz DC Resistance (Re) 3.2? Voice Coil Inductance (Le) 0.03mH Mechanical Q (Qms) 3.87 Electromagnetic Q (Qes) 2.61 Total Q (Qts) 1.56 Mounting Information Overall Outside Diameter 2.60" Depth 1" - All international buyers are responsible for all tax, duties and/or customs fees.