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ND140-4 5-1/4" Aluminum Cone Midbass Driver 4 Ohm
Quick Overview
Dayton Audios compact aluminum cone drivers demonstrate the latest advances in high-excursion design processes.Product Highlights
- Extended-range 54 Hz to 8 kHz performance
- Rubber-edged aluminum alloy cone
- Large excursion capability 4 mm Xmax, 20 mm peak
- Self-shielded Neo-Balanced motor structure
- 1" 4-layer underhung voice coil with polyimide former
- 40 watts RMS power handling
Product Manuals / Spec Sheets / Downloads
Dayton Audio ND140-4 Specifications SheetDayton Audio ND140-4 Data Files
Buying Options
Dayton Audios compact aluminum cone drivers demonstrate the latest advances in high-excursion design processes. An efficient, low-distortion Neo-Balanced motor is combined with a rigid yet lightweight aluminum diaphragm, yielding impressive high-impact audio reproduction. Perfect for single point-source applications, or combined in multiples and line arrays.
OPTIMUM CABINET SIZE *
Sealed Volume 0.78 ft.³
Sealed F3 65 Hz
Vented Volume 1 ft.³
Vented F3 34 Hz
* Enclosure volume/F3s based on BassBox "optimum" calculations
| Speaker Series | ND Series |
| Model Number | ND140-4 |
| Color | Black |
| Unit of Measure | Each |
| UPC | 844632081484 |
| Warranty - Parts | 5 Years |
| Warranty - Labor | 5 Years |
| Product Shipping Weight (lbs.) | 1 |
| Speaker Type | Midrange |
| Nominal Diameter | 5.25" |
| Power Handling (RMS) | 40 watts |
| Power Handling (max) | 80 watts |
| Continuous Program Power | -- |
| Impedance | 4 ohms |
| Sensitivity | 88.4 dB @ 2.83V/1m |
| Frequency Response | 54 - 8,000 Hz |
| Voice Coil Diameter | 1" |
| Magnet Weight | -- |
| DC Resistance (Re) | 3.7 ohms |
| Voice Coil Inductance (Le) | 0.79 mH @ 1 kHz |
| Resonant Frequency (Fs) | 59.2 Hz |
| Mechanical Q (Qms) | 5.35 |
| Electromagnetic Q (Qes) | 0.72 |
| Total Q (Qts) | 0.63 |
| Diaphragm Mass Inc. Airload (Mms) | 10.1g |
| Moving Mass Of Diaphragm (Mmd) | -- |
| Mechanical Compliance of Suspension (Cms) | 0.71 mm/N |
| Surface Area Of Cone (Sd) | 86.6 cm² |
| Volume of Displacement (Vd) | 34.6 cm³ |
| BL Product (BL) | 3.9 Tm |
| Compliance Equivalent Volume (Vas) | 7.22 liters |
| Maximum Linear Excursion (Xmax) | 4.0 mm |
| Drivers Mechanical Losses (Rms) | -- |
| Cone / Diaphragm Material | Black Anodized Aluminum Cone |
| Entry / Exit Diameter | -- |
| Surround Material | Rubber |
| Voice Coil Wire Material | -- |
| Voice Coil Former | Kapton Polyimide |
| Basket/Frame Material | -- |
| Magnet Material | Neodymium |
| Overall Outside Diameter | 138 mm |
| Overall Depth | 70.5 mm |
| Baffle Cutout Diameter | 120 mm |
| # Mounting Holes | 4 |
| Mounting Hole Diameter | -- |
| Bolt Circle Diameter | -- |
| Product Weight | -- |
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