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ND20FB-4 Rear-Mount 3/4" Neodymium Dome Tweeter 4 Ohm
Quick Overview
This versatile tweeter is a huge step above the average "budget" tweeter. It has the sensitivity, smoothness, and power handling to individually do a two-way with most small woofers.Product Highlights
- Compact neodymium motors have low stray field
- Ferrofluid enhances power handling and helps damp resonance
- Rear-mount design minimizes housing size
- Center-to-center spacing as low as 1-1/2"
- Great top-end air and sparkle
Product Manuals / Spec Sheets / Downloads
Dayton Audio ND20FB-4 Specification SheetDayton Audio ND20FB-4 Data Files
Buying Options
Dont let the low price fool you! This versatile tweeter is a huge step above the average "budget" tweeter. Conceived with line array thoughts in mind, it is finally possible to achieve the inter-driver spacing needed to minimize comb filtering out to nearly 20 kHz. But its uses dont stop at line arrays-- it has the sensitivity, smoothness, and power handling to individually do a two-way with most small woofers. Or, use it in an A-pillar in your car as a great inexpensive component tweeter. Give them a try for your next budget or micro speaker-- you will be pleasantly surprised!
| Speaker Series | ND Series |
| Model Number | ND20FB-4 |
| Color | Black |
| Unit of Measure | Each |
| UPC | 844632000881 |
| Warranty - Parts | 5 Years |
| Warranty - Labor | 5 Years |
| Product Shipping Weight (lbs.) | 0.1 |
| Speaker Type | Tweeter |
| Nominal Diameter | .75" |
| Power Handling (RMS) | 15 watts |
| Power Handling (max) | 30 watts |
| Continuous Program Power | -- |
| Impedance | 4 ohms |
| Sensitivity | 90 dB @ 1W/1m |
| Frequency Response | 3,500 - 25,000 Hz |
| Voice Coil Diameter | 19 mm |
| Magnet Weight | -- |
| DC Resistance (Re) | 3.2 ohms |
| Voice Coil Inductance (Le) | 0.03 mH |
| Resonant Frequency (Fs) | 2,072 Hz |
| Mechanical Q (Qms) | 2.08 |
| Electromagnetic Q (Qes) | 3.74 |
| Total Q (Qts) | 1.33 |
| Diaphragm Mass Inc. Airload (Mms) | -- |
| Moving Mass Of Diaphragm (Mmd) | -- |
| Mechanical Compliance of Suspension (Cms) | -- |
| Surface Area Of Cone (Sd) | 2.8 cm² |
| Volume of Displacement (Vd) | -- |
| BL Product (BL) | -- |
| Compliance Equivalent Volume (Vas) | -- |
| Maximum Linear Excursion (Xmax) | -- |
| Drivers Mechanical Losses (Rms) | -- |
| Cone / Diaphragm Material | Textile Soft Dome |
| Entry / Exit Diameter | -- |
| Surround Material | -- |
| Voice Coil Wire Material | Copper |
| Voice Coil Former | Aluminum |
| Basket/Frame Material | -- |
| Magnet Material | Neodymium |
| Overall Outside Diameter | 39 mm |
| Overall Depth | 19 mm |
| Baffle Cutout Diameter | 29 mm |
| # Mounting Holes | 4 |
| Mounting Hole Diameter | -- |
| Bolt Circle Diameter | -- |
| Product Weight | -- |
| Cone / Dome Diameter | 3/4" |