8NDL51 Woofer
50 mm (2 in) copper voice coil
70 – 3000 Hz response
94 dB sensitivity Neodymium magnet allows a very light yet powerful motor assembly Shorting copper cap for extended HF response 400 W continuous program power capacity
Ventilated voice coil gap for reduced power compression
LF Drivers LF Nd Drivers Coaxials HF Drivers Horns
Specification
Nominal Diameter | 200 (8) mm (in) |
Nominal Impedance (1) | 8 Ohm |
Minimum Impedence | 6.6 Ohm |
Nominal Power Handling (2) | 200 W |
Continuous Power Handling (3) | 400 W |
Sensitivity (1W/1m) (4) | 94 dB |
Frequency Range | 65 |
Voice Coil Diameter | 51 (2) mm (in) |
Winding Material | Copper |
Former Material | Kapton |
Winding Depth | 16.5 (0.65) mm (in) |
Magnetic Gap Depth | 8 (5/16) mm (in) |
Flux Density | 1.05 T |
Thiele & Small Parameters
Fs | 66 Hz |
Re | 5.3 Ohm |
Qes | 0.41 |
Qms | 3.6 |
Qts | 0.37 |
Vas | 14 (0.5) dm3 (ft3) |
Sd | 220 (34.1) cm2 (in2) |
Eta Zero | 1 % |
Xmax | +/- 7 mm |
Xvar | +/- 7 mm |
Mms | 28 g |
Bl | 12.4 Txm |
Le | 0.5 mH |
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Mounting and Shipping Info | |
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Overall Diameter | 225 mm (8.8 in) |
Bolt Circle Diameter | 210 mm (8.3 in) |
Baffle Cutout Diameter | 187 mm (7.4 in) |
Depth | 90 mm (3.5 in) |
Flange and Gasket Thickness | 11 mm (0.4 in) |
Net Weight | 1.8 kg (4 lb) |
Shipping Weight | 2.2 kg (4.8 lb) |
Shipping Box | 300x160x180 mm |
| (11.8x6.3x7.1 in) |
1For different impedances, please ask.
22 hours test made with continuous pink noise signal (6 dB crest factor). Power calculated on rated minimum impedance.
3Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
4Applied RMS Voltage is set to 2.83V for 8 ohms or 2.0V for 4 ohms Nominal Impedance
