Features
The new 21SW3000-NDY-4 is an advanced, high-strength Neodymium subwoofer driver featuring 4.5” inside/outside copper coil with an unique dual forced design ventilation system. This combination deliveries 1500 Watts RMS power handling and a minimum weight of 24 lbs. making this subwoofer an unique product in his category.
The combination of special treated carbon fiber loaded cone assembly, large triple roll surround and a double silicon spider gives the 21SW3000-NDY-4 remarkable strength and excursion control under its large 13.2 mm Xmax. Perfect for high output concert and nightclub applications due to its efficiency that’s been designed to provide powerful and accurate sub-bass frequencies with low distortion and low power compression.
Highlights
- Nominal Impedance: 4 Ohms
- Rated AES Power Handling (RMS): 1500 Watts
- Program Power: 3000 Watts
- Sensitivity (1W/1m): 98 dB
- Voice Coil Diameter: 4.5″
Technical Details
GENERAL SPECIFICATIONS
| Nominal Diameter | 21″ (553 mm) |
| Nominal impedance | 4 Ohms |
| Rated AES Power Handling (RMS) | 1500 Watts |
| Program Power | 3000 Watts |
| Sensitivity 2.00V at 1m | 98 dB |
|
Recommended Hi Pass Crossover** **For Full Power Handling |
45 Hz** **12db Per Octave Crossover |
| Frequency Response at -10dB | 35 – 1,800 Hz |
| Voice Coil Diameter | 4.5″ (115 mm) |
| Voice Coil Wire | Copper |
| Voice Coil Winding Depth | 34.0 mm |
| Former Material | Glass Fiber |
| Magnetic Gap Depth | 15.0 mm |
| Frame Material | Die Cast Aluminum |
THIELE-SMALL PARAMETERS
| Equivalent Volume | Vas | 337.3 l |
| Excursion (mathematical)*** | Xmax | 13.25 mm |
| Free Air Resonance | Fs | 31.4 Hz |
| Mechanical Factor | Qms | 11.9 |
| Electrical Factor | Qes | 0.35 |
| Total Factor | Qts | 0.34 |
| Cone Area | Sd | 1924 cm² |
| Mechanical Mass | Mms | 392 g |
| Bl Factor | Bl | 26.65 Tm |
| Dc Resistance | Re | 3.2 Ohms |
| Inductance | Le | 1.45 mH at 1 kHz |
| Mechanical Mass Without Air | Mmd | 345.2 g |
| Mechanical Compliance | Cms | 0.065 mm/N |
***Xmax=(Voice coil winding depth-Magnetic Gap depth)/2+ Mgnetic Gap Depth/4
EXTRA INFO
| Overall Diameter | 21.53” (547 mm) |
| Front Mount Baffle Cutout | 20.0” (508 mm) |
| Mounting Depth | 9.21” (234 mm) |
| Overall Depth | 10.0” (255 mm) |
| Net Weight | 24.0 Lbs (10.9 kg) |
| Shipping Weight | 28.6 Lbs (13.0 kg) |
| Carton Dimensions W x L x H | 23.2” x 22.4” x 10.8” (590 x 570 x 275 mm) |
