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ND25FA-4 1" Soft Dome Neodymium Tweeter 4 Ohm
Quick Overview
Compact, ultra-smooth soft dome tweeter with excellent detail and high power handling. The small faceplate and tiny 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 3kHz makes crossover design an absolute breeze!Product Highlights
- Exceptionally flat treble response with low distortion
- Compact round faceplate design is simple to install
- High-strength neodymium motor with heatsink and ferrofluid cooling
- 1" diameter voice coil for good off-axis dispersion
- Clean, modern styling and appearance
Product Manuals / Spec Sheets / Downloads
Dayton Audio ND25FA-4 Specification SheetDayton Audio ND25FA-4 Data Files
Buying Options
This tweeter is smooth! The Dayton Audio ND25FA-4 is a 1” soft-dome tweeter that 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 that doesn’t become fatiguing or shrill at high volumes, for a highly refined presentation. The compact faceplate allows for close center-to-center spacing of drivers, making these tweeters perfect for line array use or D’Appolito (MTM) configurations with wide dispersion.
| Speaker Series | ND Series |
| Model Number | ND25FA-4 |
| Color | Black |
| Unit of Measure | Each |
| UPC | 848791000850 |
| Warranty - Parts | 5 Years |
| Warranty - Labor | 5 Years |
| Product Shipping Weight (lbs.) | 0.2 |
| Speaker Type | Tweeter |
| Power Handling (RMS) | 20 watts |
| Power Handling (max) | 40 watts |
| Continuous Program Power | -- |
| Impedance | 4 ohms |
| Sensitivity | 90 dB @ 2.83V/1m |
| Frequency Response | 2,500 - 20,000 Hz |
| Voice Coil Diameter | 25 mm |
| Magnet Weight | -- |
| DC Resistance (Re) | 3.2 ohms |
| Voice Coil Inductance (Le) | 0.03 mH |
| Resonant Frequency (Fs) | 1,350 Hz |
| Mechanical Q (Qms) | 3.87 |
| Electromagnetic Q (Qes) | 2.61 |
| Total Q (Qts) | 1.56 |
| Diaphragm Mass Inc. Airload (Mms) | -- |
| Moving Mass Of Diaphragm (Mmd) | -- |
| Mechanical Compliance of Suspension (Cms) | -- |
| Surface Area Of Cone (Sd) | 7.5 cm² |
| Volume of Displacement (Vd) | -- |
| BL Product (BL) | -- |
| Compliance Equivalent Volume (Vas) | -- |
| Maximum Linear Excursion (Xmax) | -- |
| Drivers Mechanical Losses (Rms) | -- |
| Cone / Diaphragm Material | Soft Dome |
| Entry / Exit Diameter | -- |
| Surround Material | -- |
| Voice Coil Wire Material | Copper |
| Voice Coil Former | Kapton® |
| Basket/Frame Material | -- |
| Magnet Material | Neodymium |
| Overall Outside Diameter | 66 mm |
| Overall Depth | 35.9 mm |
| Baffle Cutout Diameter | 45 mm |
| # Mounting Holes | 4 |
| Mounting Hole Diameter | -- |
| Bolt Circle Diameter | -- |
| Product Weight | -- |
| Cone / Dome Diameter | 1" |