B&C 8PS21 WP 8" Replacement Woofer Speaker 400W 8-Ohm 2" Copper Voice coil
B&C's 8PS21 8'' woofer features a 2'' copper voice coil on a Kapton® former, die cast frame, ceramic ferrite magnet, and a 200 watts RMS power handling rating. A copper ring in the 8PS21's magnetic circuit reduces distortion and extends high frequency response up to 3 kHz. The 8PS21 is an ideal compact pro woofer choice when used singly or in multiples.
Specifications
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Nominal diameter: 200 mm (8.0 in)
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Nominal impedance: 8-Ohm
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Minimum impedance: 7.0-Ohm
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Nominal power handling: 200 W
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Continuous power handling: 400 W
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Sensitivity (1W/1m): 94.0 dB
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Frequency range: 70 - 3000 Hz
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Voice coil diameter: 50 mm (2.0 in)
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Winding material: Copper
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Former material: Kapton
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Winding depth: 16 mm (0.62 in)
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Magnetic gap depth: 8 mm (0.31 in)
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Flux density: 1.1 T
Design
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Surround shape: Double Roll
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Cone shape: Exponential
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Magnet material: Ferrite
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Spider: Single
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Pole design: T-Pole
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Woofer cone treatment: None
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Recommended enclosure: 14.0 dm3 (0.49 ft3)
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Recommended tuning: 73 Hz
Parameters
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Fs: 73 Hz
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Re: 5.4
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Qes: 0.36
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Qms: 4.2
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Qts: 0.33
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Vas: 14.0 dm3 (0.49 ft3)
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Sd: 220.0 cm2 (34.1 in2)
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no: 1.5 %
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Xmax: 5.0 mm
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Xvar: 4.0 mm
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Mms: 23 g
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Bl: 12.6 Txm
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Le: 0.5 mH
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EBP: 202 Hz
Mounting Information
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Overall diameter: 225 mm (8.8 in)
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Bolt circle diameter: 210 mm (8.3 in)
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Baffle cutout diameter: 187.0 mm (7.4 in)
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Depth: 91 mm (3.6 in)
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Flange and gasket thickness: 11 mm (0.4 in)
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Air volume occupied by driver: 1.2 dm3 (0.04 ft3)
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Net weight: 3.4 kg (7.5 lb)
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Shipping weight:: 3.7 kg (8.1 lb)
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Shipping box: 220x220x130 mm (8.7x8.7x5.1 in)
