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NHP25F-4 1" Soft Dome High Power Neodymium Tweeter 4 Ohm
Quick Overview
The Dayton Audio compact NHP25F-4 1" soft 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 NHP25F-4 an amazing value.Product Highlights
- Attached heatsink and ferrofluid cooling for increased power handling
- Over 95 dB efficient is perfect for use in higher output designs
- Compact cast aluminum faceplate minimizes center to center distance
- High temperature neodymium motor allows high output for extended periods
- Extremely smooth response makes for easy transition to midrange diver
Product Manuals / Spec Sheets / Downloads
Dayton Audio NHP25F-4 Specification SheetDayton Audio NHP25F-4 Data Files
Buying Options
Dayton Audios versatile NHP25F-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 up to 20 kHz, excellent off-axis dispersion, and superb sonic detail.
The NHP25F-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
| Speaker Series | ND Series |
| Model Number | NHP25F-4 |
| Color | Black |
| Unit of Measure | Each |
| UPC | 848791004759 |
| 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 | 95 dB 2.83V/1m |
| Frequency Response | 3,000 - 20,000 Hz |
| Voice Coil Diameter | 25.4 mm |
| Magnet Weight | -- |
| DC Resistance (Re) | 3.18 ohms |
| Voice Coil Inductance (Le) | 0.03 mH |
| Resonant Frequency (Fs) | 1689 Hz |
| Mechanical Q (Qms) | 3.75 |
| Electromagnetic Q (Qes) | 2.04 |
| Total Q (Qts) | 1.32 |
| 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 | Silk |
| 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 | -- |