B&C Zvučnik 12NDL76

B&C 12NDL76 12" 400W Low Frequency Driver with Neodymium Magnet 8 Ohms (Faston)

800 W continuous program power capacity
76 mm (3 in) aluminium voice coil
50 - 2000 Hz response
100 dB sensitivity
Neodymium magnet allows a very light yet powerful motor assembly
Ventilated voice coil gap for reduced power compression

Specifications

Nominal diameter 320 mm (12.0 in)
Nominal impedance 8 ohms
Minimum impedance 6.2 ohms
Nominal power handling 400 W
Continuous power handling 800 W
Sensitivity (1W/1m) 100.0 dB
Frequency range 50 - 2000 Hz
Voice coil diameter 76 mm (3.0 in)
Winding material Aluminium
Former material Glass Fibre
Winding depth 19 mm (0.75 in)
Magnetic gap depth 10 mm (0.4 in)
Flux density 1.25 T

Design

Surround shape Double Roll
Cone shape Exponential
Magnet material Neodymium Inside Slug
Spider Single
Pole design Straight Pole
Woofer cone treatment WP Waterproof Front Side
Recommended enclosure 42.0 dm3 (1.48 ft3)
Recommended tuning 65 Hz

Parameters

Fs 50 Hz
Re 5.3 ohms
Qes 0.21
Qms 4.2
Qts 0.2
Vas 73.0 dm3 (2.5 ft3)
Sd 522.0 cm2 (80.9 in2)
Reference efficiency 4.3 %
Xmax 6.5 mm
Xvar 6.5 mm
Mms 53 g
Bl 20.1 Txm
Le 1.0 mH
EBP 238 Hz

Mounting and Shipping Info

Overall diameter 315 mm (12.4 in)
Bolt circle diameter 298 mm (11.7 in)
Baffle cutout diameter 283.0 mm (11.1 in)
Depth 141 mm (5.5 in)
Flange and gasket thickness 14 mm (0.55 in)
Air volume occupied by driver 2.5 dm3 (0.08 ft3)
Net weight 3.9 kg (8.6 lb)
Shipping units 1
Shipping weight 4.5 kg (9.9 lb)
Shipping box 340x340x170 mm (13.4x13.4x6.7 in)