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ND65-4 2-1/2" Aluminum Cone Full-Range Driver 4 Ohm
Quick Overview
Dayton Audios compact ND65-4 aluminum cone driver demonstrates the latest advances in high-excursion design processes.Product Highlights
- Rubber-edged aluminum alloy cone
- Large excursion capability
- Self-shielded Neo-Balanced motor structure
- 4-layer underhung voice coil with polyimide former
- High power handling
Product Manuals / Spec Sheets / Downloads
Dayton Audio ND65-4 Specification SheetDayton Audio ND65-4 Data Files
Buying Options
Dayton Audios compact ND65-4 aluminum cone driver demonstrates 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 speaker applications, or combined in multiples and line arrays.
OPTIMUM CABINET SIZE *
Sealed Volume 0.05 ft.³
Sealed F3 102 Hz
Vented Volume 0.08 ft.³
Vented F3 53 Hz
* Enclosure volume/F3s based on BassBox "optimum" calculations
| Speaker Series | ND Series |
| Model Number | ND65-4 |
| Color | Black |
| Unit of Measure | Each |
| UPC | 844632081460 |
| Warranty - Parts | 5 Years |
| Warranty - Labor | 5 Years |
| Product Shipping Weight (lbs.) | 0.4 |
| Speaker Type | Full-Range |
| Nominal Diameter | 2.50" |
| Power Handling (RMS) | 15 watts |
| Power Handling (max) | 30 watts |
| Continuous Program Power | -- |
| Impedance | 4 ohms |
| Sensitivity | 83 dB @ 2.83V/1m |
| Frequency Response | 85 - 20,000 Hz |
| Voice Coil Diameter | 19 mm |
| Magnet Weight | -- |
| DC Resistance (Re) | 3.5 ohms |
| Voice Coil Inductance (Le) | 0.44 mH @1 kHz |
| Resonant Frequency (Fs) | 89.5 Hz |
| Mechanical Q (Qms) | 5.56 |
| Electromagnetic Q (Qes) | 0.68 |
| Total Q (Qts) | 0.61 |
| Diaphragm Mass Inc. Airload (Mms) | 2.5g |
| Moving Mass Of Diaphragm (Mmd) | -- |
| Mechanical Compliance of Suspension (Cms) | 1.26 mm/N |
| Surface Area Of Cone (Sd) | 15.6 cm² |
| Volume of Displacement (Vd) | 5.4 cm³ |
| BL Product (BL) | 2.68 Tm |
| Compliance Equivalent Volume (Vas) | 0.53 liters |
| Maximum Linear Excursion (Xmax) | 3.5 mm |
| Drivers Mechanical Losses (Rms) | -- |
| Cone / Diaphragm Material | Black Anodized Aluminum Cone |
| Entry / Exit Diameter | -- |
| Surround Material | Rubber |
| Voice Coil Wire Material | Copper |
| Voice Coil Former | Kapton® / Polyimide |
| Basket/Frame Material | Steel |
| Magnet Material | Neodymium |
| Overall Outside Diameter | 64 mm |
| Overall Depth | 48 mm |
| Baffle Cutout Diameter | 52 mm |
| # Mounting Holes | 4 |
| Mounting Hole Diameter | -- |
| Bolt Circle Diameter | -- |
| Product Weight | -- |