B&C Speakers 8PS21 User Manual

Specification

Nominal Diameter 200 (8) mm (in)
Nominal Impedance (1) 8 Ohm
Minimum Impedence 7 Ohm
Nominal Power Handling (2) 200 W
Continuous Power Handling (3) 400 W
Sensitivity (1W/1m) (4) 94 dB
Frequency Range 70 -3000 Hz
Voice Coil Diameter 50 (2) mm (in)
Winding Material Copper
Former Material Kapton
Winding Depth 16 (5/8) mm (in)
Magnetic Gap Depth 8 (5/16) mm (in)
Flux Density 1.1 T

Thiele & Small Parameters

Fs 73 Hz
Re 5.4 Ohm
Qes 0.36
Qms 4.2
Qts 0.33
Vas 14 (0.5) dm3 (ft3)
Sd 220 (34.1) cm2 (in2)
Eta Zero 1.5 %
Xmax +/- 5 mm
Xvar +/- 4.5 mm
Mms 23 g
Bl 12.6 Txm
Le 0.5 mH

8PS21

Woofer

400 W continuous program power capacity

50 mm (2 in) copper voice coil

70 – 3000 Hz response

94 dB sensitivity

Shorting copper cap for extended HF response

LF Drivers LF Nd Drivers Coaxials HF Drivers Horns

Mounting and Shipping Info

Overall Diameter 225 mm (8.8 in)
Bolt Circle Diameter 210 mm (8.3 in)
Baffle Cutout Diameter 187 mm (7.4 in)
Depth 91 mm (3.6 in)
Flange and Gasket Thickness 11 mm (0.4 in)
Net Weight 3.4 kg (7.5 lb)
Shipping Weight 3.7 kg (8.1 lb)
Shipping Box 220x220x130 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 or 2.0V for 4 ohms
Nominal Impedance

(8.7x8.7x5.1 in)