B&C Speakers 8 PL 21 - Manual

5
B&C
Extremely high efficiency midrange,
2’’ aluminium voice coil with very flat
response up to 5 kHz.
Specifications
Nominal Diameter 200 mm (8 in.)
Nominal Impedance 8 Ω
Minumum Impedance 6.6 Ω
Power Handling
(90 –900 Hz)
Nominal
1 200 W
Continuous Program 2 400 W
Sensitivity (1W/1m) 3 99 dB
Frequency Range 90-5000 Hz
Voice Coil Diameter 50 mm (2 in.)
Winding Material Aluminium
Former Material Kapton
Winding Depth 9 mm (11/32 in.)
Magnetic Gap Depth 8 mm (5/16 in.)
Flux Density 1.25 T
Also available in 16 Ω , data upon request
Thiele & Small Parameters 4
Fs 94 Hz
Re 5.4 Ω
Qes 0.3
Qms 5.5
Qts 0.29
Vas 13 dm. 3 (0.46 cu. ft.)
Sd 220 cm. 2 (34.1 sq. in.)
η
0 3.4 %
X max ± 1 mm.
Mms 15 gr.
Bl 12.7 Tm
Le 0.3 mH
Mounting and Shipping Informations
Overall Diameter 225 mm. (8.8 in.)
Bolt Circle Diameter 210 mm. (8.3 in.)
Baffle Cutout Diameter 187 mm. (7.4 in.)
Depth 89 mm. (3.5 in.)
Flange and Gasket Thickness 9.5 mm. (3/8 in.)
Net Weight 4.4 Kg. (9.7 lb.)
Shipping Weight 4.7 Kg. (10.3 lb.)
Shipping Box 220x220x130 mm
(8.7x8.7x5.1 in.)
1 2 hours test made with continuous pink noise signal (6 dB crest factor) within the
specified range . Power calculated on rated minimum impedance. Loudspeaker in
free air.
2 Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
3 Applied RMS Voltage is set to 2.83V for 8 ohms and 4V for 16 ohms Nominal
Impedance. Average SPL from 200 to 4000 Hz.
4 Thiele-Small parameters are measured after a high level 20 Hz sine wave precon-
ditioning test.
8 PL 21 |
Midrange
Speakers
Coaxials HF Compression drivers Horns