B&C Speakers Coaxials 12 CX B User manual

Speakers Coaxials HF Compression drivers Horns
1
B&C
Thanks to its power handling, very good output
level over a wide frequency range and excellent
dispersion, this 12” coaxial transducer allows for
high quality performance in compact cabinets
Specifications
Nominal Diameter 320 mm. (12 in.)
Nominal Impedance 8 Ω
Minimum Impedance 6.3 Ω(LF), 7.2 Ω(HF)
Frequency Range 55 – 18000 Hz
Dispersion Angle190°
LF unit
Sensitivity (1W/1m)299 dB
Power Handling
(60 –600 Hz)
Nominal3250 W
Continuous Program4500 W
Voice Coil Diameter 65 mm. (2.5 in.)
Winding Material Copper
HF unit
Sensitivity (1W/1m)5104.5 dB
Power Handling
(2200 –20000 Hz)
Nominal 30 W
Continuous Program 60 W
Voice Coil Diameter 44 mm. (1.75 in.)
Winding Material Aluminium
Diaphragm Material Mylar
Min. Recom. Crossover61.8 kHz
Thiele & Small Parameters7
Fs 54 Hz
Re 5.5 Ω
Qes 0.37
Qms 7.2
Qts 0.35
Vas 94.6 dm.3 (3.3 cu. ft.)
Sd 522 cm.2 (80.9 sq. in.)
η03.8 %
X max ± 2.6 mm.
Mms 35 gr.
Bl 13.4 Tm
Le 1.2 mH
12 CX B |Coaxials
Progetto3 7-01-2005 15:25 Pagina 1

Speakers Coaxials HF Compression drivers Horns
2
B&C
Mounting and Shipping Informations
Overall Diameter 316 mm. (12.4 in.)
Bolt Circle Diameter 296 mm. (11.6 in.)
Baffle Cutout Diameter 282 mm. (11.1 in.)
Depth 182 mm. (7.2 in.)
Flange and Gasket Thickness 16 mm. (5/8 in.)
Net Weight 7.2 Kg. (15.8 lb.)
Shipping Weight 8 Kg. (17.6 lb.)
Shipping Box 380x380x240 mm.
(15x15x9.4 in.)
1 Included by –6 dB down points, averaged from 1 kHz to 8 kHz.
With B&C XO-2 crossover filter.
2 Applied RMS Voltage is set to 2.83V for 8 ohms and 4V for 16
ohms Nominal Impedance. Average SPL from 200 to 3000 Hz.
3 2 hours test made with continuous pink noise signal (6 dB crest
factor) within the specified range . Power calculated on rated mini-
mum impedance. Loudspeaker in free air.
4 Power on Continuous Program is defined as 3 dB greater than the
Nominal rating.
5 Average SPL from 1500 to 18000 Hz.
6 12 dB/oct. or higher slope high-pass filter.
XO-2 Crossover
Filter Type Two way
Nominal Impedance 8 Ω
Crossover Frequency 1.8 kHz
Slope 6 dB/oct. (Low)
12 dB/oct. with Eq. (High)
Overall Dimensions 142x107 mm. (5.6x4.2 in.)
Weight 0.4 Kg. (0.9 lb.)
Filtered on axis response (2.83V/1m)
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