12NDL76-08 12″ Woofer – Technical Specifications
High-Power Low-Frequency Driver for Professional Audio Systems
1. Key Features
- 76mm (3″) Aluminum Voice Coil – Enhanced thermal management
- 400W AES Power Handling – Robust performance for demanding applications
- 50Hz–2kHz Frequency Response – Optimized for low-frequency reproduction
- 100dB Sensitivity (1W/1m) – High-efficiency sound output
- Neodymium Magnet System – Powerful 1.25T magnetic flux density
2. Typical Characteristics
| Parameter | Value |
|---|
| Nominal Diameter | 320 mm |
| Nominal Impedance | 8 Ω |
| Minimum Impedance | 6.2 Ω |
| AES Power Handling | 400 W |
| Sensitivity (1W/1m) | 100 dB SPL |
| Frequency Range | 50–2000 Hz |
| Voice Coil Diameter | 76 mm |
| Winding Material | Aluminum |
| Former Material | Glass Fibre |
| Winding Depth | 19 mm |
| Magnetic Gap Depth | 10 mm |
| Flux Density | 1.25 T |
3. Design Details
| Parameter | Value |
|---|
| Surround Shape | Double Roll |
| Cone Shape | Exponential |
| Magnet Type | Neodymium Inside Slug |
| Spider | Single |
| Pole Design | Straight Pole |
| Cone Treatment | Waterproof Front Side |
| Recommended Enclosure Volume | 42.0 L |
| Recommended Tuning Frequency | 65 Hz |
4. Thiele/Small Parameters
| Parameter | Value |
|---|
| Resonant Frequency (Fs) | 50 Hz |
| DC Resistance (Re) | 5 Ω |
| Electrical Q (Qes) | 0.21 |
| Mechanical Q (Qms) | 4.2 |
| Total Q (Qts) | 0.2 |
| Equivalent Volume (Vas) | 73.0 L |
| Piston Area (Sd) | 522.0 cm² |
| Efficiency (η₀) | 4.3% |
| Maximum Linear Excursion (Xmax) | ±6.5 mm |
| Maximum Mechanical Excursion (Xvar) | ±6.5 mm |
| Moving Mass (Mms) | 53 g |
| BL Factor (BL) | 20.1 T·m |
| Voice Coil Inductance (Le @1kHz) | 1.0 mH |
| Efficiency Bandwidth Product (EBP) | 238 |
5. Mounting & Shipping Information
| Parameter | Value |
|---|
| Overall Diameter | 315 mm |
| Bolt Circle Diameter | 298 mm |
| Baffle Cutout Diameter | 283.0 mm |
| Depth | 141 mm |
| Flange & Gasket Thickness | 14 mm |
| Air Volume Occupied by Driver | 2.5 L |
| Net Weight | 3.9 kg |
| Shipping Units | 1 |
| Shipping Weight | 4.5 kg |
| Shipping Box Dimensions | 340×340×170 mm |
Notes
- Specifications may vary slightly due to manufacturing tolerances
- For optimal performance, follow recommended enclosure and tuning guidelines
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