B&C Speakers Coaxials 12 CX B Manual de usuario

Speakers Coaxials HF Compression drivers Horns

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

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)

Progetto3 7-01-2005 15:25 Pagina 2

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