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DAYTON AUDIO ND64-4 Speaker Driver Full Range 15W 4 Ohm 85dB 100Hz-20kHz Ø6.3cm
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Dayton Audio ND64-4
Speaker Driver Full Range 15W 4 Ohm 85dB 100Hz-20kHz Ø6.3cm
The Dayton Audio ND64-4 is a full-range loudspeaker, capable of a large linear excursion of 6mm peak-to-peak. It features a dual neodymium magnet structure, a 19mm diameter CCAW voice coil and a copper tube to minimize distortion. The neodymium motor is combined with a rigid yet lightweight aluminum-magnesium diaphragm for a dynamic and punchy sound. The ND64-4 is perfect for use in single driver speaker designs as well as in multi-way speakers.
Technical characteristics
| Specifications | |
|---|---|
| Speaker driver type | Full range |
| Nominal diameter | Ø63mm (2.5") |
| Power handling | RMS : 15W Max : 30W |
| Impedance | 4Ω |
| Frequency response | 100Hz - 20kHz |
| Sensitivity | 85.2dB 2.83V/1m |
| Voice coil diameter | Ø19m (0.75") |
| Weight | 159g |
| Overall external dimensions | 64 x 38.8mm |
| Magnet weight | - |
| Spécifications | |
|---|---|
| Resonant frequency (fS) | 103Hz |
| DC Resistance (RE) | 3.7Ω |
| Electrical quality factor (QES) | 0.36 |
| Mechanical quality factor (QMS) | 4.36 |
| Total quality factor (QTS) | 0.33 |
| Suspension equivalent air volume (VAS) | 0.42L |
| Maximum impedance (Zmax) | - |
| Voice coil inductance (LE) | 0.37mH |
| Force factor (B·l) | 4.13T·m |
| Suspension mechanical resistance (RMS) | 0.4N·s/m |
| Suspension mechanical compliance (CMS) | 930µm/N |
| Moving mass (MMD) | 2.5g |
| Moving mass including airload (MMS) | 2.56g |
| Surface of the diaphragm (SD) | 15.6cm² |
| Effective diaphragm diameter | Ø4.5cm |
| Maximum linear excursion (Xmax) | ±1.9mm |
| Displacement volume at Xmax (VD) | 3cm³ |
| Efficiency (η₀) | 0.12% |
| Efficiency bandwidth product (EBP) | 286 |
| Materials | |
|---|---|
| Diaphragm material | Anodized aluminum |
| Surround material | Rubber |
| Magnet material | Neodymium |
| Frame material | Steel |
| Mounting informations | |
|---|---|
| Overall external diameter | Ø64mm |
| Cutout diameter | Ø53mm |
| Total depth | 39mm |
| Mounting bolt diameter | Ø66mm |
| Number of mounting holes | 4 |
| Optimum cabinet size (determined with BassBow 6 Pro High Fidelity) | |
|---|---|
| Sealed volume | 0.06L |
| Sealed F3 | 265.5Hz |
| Vented volume | 0.14L |
| Vented F3 | 117.3Hz |
| Speaker Power (W RMS) | 15.0 |
| Speaker Type | Full range |
| Impedance (Ω) | 4 |
| Loudspeaker diameter (mm) | 63.0 |
| Diaphragm type | Aluminium |
| Efficiency / Sensitivity (dB) | 85.0 |
| Max Linear Excursion (Xmax) (mm) | 2.0 |
| Lowest frequency (Hz) | 100 |
| Highest frequency (Hz) | 20000 |
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