BC Speakers Speaker 8NDL51 User Manual

Specification  
Nominal Diameter  
200 (8) mm (in)  
8 Ohm  
Nominal Impedance (1)  
Minimum Impedence  
Nominal Power Handling (2)  
Continuous Power Handling (3)  
Sensitivity (1W/1m) (4)  
Frequency Range  
6.6 Ohm  
200 W  
400 W  
94 dB  
65 -3000 Hz  
51 (2) mm (in)  
Copper  
Voice Coil Diameter  
Winding Material  
Former Material  
Kapton  
Winding Depth  
Magnetic Gap Depth  
Flux Density  
16.5 (0.65) mm (in)  
8 (5/16) mm (in)  
1.05 T  
Thiele & Small Parameters  
Fs  
Re  
Qes  
Qms  
Qts  
66 Hz  
5.3 Ohm  
0.41  
3.6  
0.37  
Vas  
Sd  
14 (0.5) dm3 (ft3)  
220 (34.1) cm2 (in2)  
1 %  
Eta Zero  
Xmax  
Xvar  
Mms  
Bl  
+/- 7 mm  
+/- 7 mm  
28 g  
12.4 Txm  
Le  
0.5 mH  
Mounting and Shipping Info  
Woofer  
8NDL51  
Overall Diameter  
Bolt Circle Diameter  
Baffle Cutout Diameter  
Depth  
225 mm (8.8 in)  
210 mm (8.3 in)  
187 mm (7.4 in)  
90 mm (3.5 in)  
11 mm (0.4 in)  
1.8 kg (4 lb)  
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  
Flange and Gasket Thickness  
Net Weight  
400 W continuous program power capacity  
Ventilated voice coil gap for reduced power compression  
Shipping Weight  
Shipping Box  
2.2 kg (4.8 lb)  
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.  
Power on Continuous Program is defined as 3 dB greater than the  
Nominal rating.  
3
4
Applied RMS Voltage is set to 2.83V for 8 ohms or 2.0V for 4 ohms  
Nominal Impedance  
 

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