B&C Speakers 6NDL44 User Manual

Specification

Nominal Diameter 170 (6.5) mm (in)
Nominal Impedance (1) 8 Ohm
Minimum Impedence 5.8 Ohm
Nominal Power Handling (2) 200 W
Continuous Power Handling (3) 400 W
Sensitivity (1W/1m) (4) 91.5 dB
Frequency Range 70 - 6000 Hz
Voice Coil Diameter 44 (1.7) mm (in)
Winding Material Copper
Former Material Kapton
Winding Depth 12 (1/2) mm (in)
Magnetic Gap Depth 6 (1/4) mm (in)
Flux Density 1.25 T

Thiele & Small Parameters

Fs 68 Hz
Re 5.0 Ohm
Qes 0.35
Qms 9
Qts 0.34
Vas 7.5 (0.26) dm3 (ft3)
Sd 132 (20.5) cm2 (in2)
Eta Zero 0.65 %
Xmax 6.0 mm
Xvar 5.5 mm
Mms 17.8 g
Bl 10.3 Txm
Le 0.57 mH

6NDL44

Woofer

400 W continuous program power capacity

44 mm (1.7 in) copper voice coil

70 - 6000 Hz response

91.5 dB sensitivity

LF Drivers LF Nd Drivers Coaxials HF Drivers Horns

Mounting and Shipping Info

Overall Diameter 187 mm (7.4 in)
Bolt Circle Diameter 172 mm (6.7 in)
Baffle Cutout Diameter 145 mm (5.7 in)
Depth 82 mm (3.2 in)
Flange and Gasket Thickness 11 mm (0.4 in)
Net Weight 1.2 kg (2.6 lb)
Shipping Weight (4 units) 6.1 kg (13.4 lb)
Shipping Box (4 units) 405x225x210 mm

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 Nominal Impedance.

(15.9x8.8x8.3 in)