Additional Details ------------------------------ Bullet point: Extremely smooth response makes for easy transition to midrange diver_Over 94 dB efficiency is perfect for use in higher output designs_Attached heatsink and ferrofluid cooling for increased power handling_Compact cast aluminum faceplate minimizes center-to-center distance_High temperature neodymium motor allows high output for extended periods Product description: Quick Overview The Dayton Audio compact NHP25Ti-4 1" titanium dome tweeter uses a high temperature neodymium motor, Ferrofluid cooling, and rear mounted heatsink for improved heat dissipation making this tweeter suitable for higher output systems and even professional line arrays. In addition, the flat response and high efficiency makes the NHP25Ti-4 an amazing value. Product Highlights Extremely smooth response makes for easy transition to midrange diver Over 94 dB efficiency is perfect for use in higher output designs Attached heatsink and ferrofluid cooling for increased power handling Compact cast aluminum faceplate minimizes center-to-center distance High temperature neodymium motor allows high output for extended periods Product Manuals / Spec Sheets / Downloads Dayton Audio NHP25Ti-4 Specification Sheet Dayton Audio NHP25Ti-4 Data FilesBuying Options Buy NowBuy Internationally Product Description Dayton Audios versatile NHP25Ti-4 is a 1" titanium-dome tweeter that offers the performance of more expensive tweeters in a compact and stylish package. The small yet powerful high temperature neodymium motor with attached aluminum heatsink and Ferrofluid-filled magnetic gap reduces power compression and improves long-term power handling. In addition, the carefully designed titanium diaphragm provides accurate treble response to over 20 kHz, excellent off-axis dispersion, and superb sonic detail. The NHP25Ti-4 includes a 2.5" cast aluminum faceplate, however Dayton Audio does offer an optional 4.09" (104 mm) and 4.33" (110 mm) faceplate allowing this tweeter to be used as a drop in replace for many common sized tweeters. 104mm Cast Aluminum Face Plate for NHP Tweeters 110mm Cast Aluminum Face Plate for NHP Tweeters Product Details Model Number NHP25Ti-4 Color Black Unit of Measure Each UPC 848791004889 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 0.25 Speaker Type Tweeter Nominal Diameter 1" Power Handling (RMS) 40 watts Power Handling (max) 80 watts Continuous Program Power -- Impedance 4 ohms Sensitivity 94 dB 2.83V/1m Frequency Response 3,000 - 20,000 Hz Voice Coil Diameter 25.4 mm Magnet Weight -- DC Resistance (Re) 3.23 ohms Voice Coil Inductance (Le) 0.03 mH Resonant Frequency (Fs) 1612 Hz Mechanical Q (Qms) 5.23 Electromagnetic Q (Qes) 2.54 Total Q (Qts) 1.71 Diaphragm Mass Inc. Airload (Mms) -- Moving Mass Of Diaphragm (Mmd) -- Mechanical Compliance of Suspension (Cms) -- Surface Area Of Cone (Sd) -- Volume of Displacement (Vd) -- BL Product (BL) -- Compliance Equivalent Volume (Vas) -- Maximum Linear Excursion (Xmax) -- Drivers Mechanical Losses (Rms) -- Cone / Diaphragm Material Titanium Cone Entry / Exit Diameter -- Surround Material -- Voice Coil Wire Material Copper Voice Coil Former Aluminum Basket/Frame Material Aluminum Magnet Material Neodymium Overall Outside Diameter 63.75 mm Overall Depth 27.2 mm Baffle Cutout Diameter 40.1 mm Mounting Hole Diameter -- Bolt Circle Diameter -- Product Weight --