8NDL51
Woofer
LF Drivers
LF Nd Drivers
Coaxials
HF Drivers
Horns
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
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 -3000 Hz
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
Mounting and Shipping Info
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)
1
For different impedances, please ask.
2
2 hours test made with continuous pink noise signal (6 dB crest factor).
Power calculated on rated minimum impedance.
3
Power on Continuous Program is defined as 3 dB greater than the
Nominal rating.
4
Applied RMS Voltage is set to 2.83V for 8 ohms or 2.0V for 4 ohms
Nominal Impedance
