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21″ Replacement Neodymium Speaker 2000w RMS Sub Bass Woofer 4Ω – BWN21

£249.17 £207.50 Inc VAT

(includes 20% VAT)
30 day money back guarantee

20 in stock

Premier 21″ 2000w RMS 4Ω Professional Sub Bass Neodymium Speaker

Genuine 2000w RMS RATED Neodymium Speaker

FREE DELIVERY UK MAINLAND

Bishopsound drivers are high-quality PA speakers using strong chassis. Made from professional grade materials and tested fully before shipping.

This 21″ Sub Speaker is ideal for use in vocal PA, keyboards, club systems and earth shaking subwoofers

Description

This is a superb 21″ 2000w RMS Neodymium speaker for professional use.

GENERAL CHARACTERISTICS

  • Overall diameter 548 mm
  • Net weight 18 kg
  • Shipping weight 21 kg
  • Shipping box 590x590x300 mm
  • Magnet NEO
  • Flux Density 1.1 T

ELECTRICAL CHARACTERISTICS

  • Nominal Impedance 4 Ω
  • Musical Power 4000 W
  • RMS Rated Power 2000 W
  • Sensitivity@1W/1m 96 dB

THIELE-SMALL PARAMETERS

  • Voice Coil DC Resistance Re 3.6 Ω
  • Resonance Frequency Fs 35.0 Hz
  • Mechanical Q Factor Qms 10.5
  • Electrical Q Factor Qes 0.45
  • Total Q Factor Qts 0.43
  • Mechanical Moving Mass Mms 335 g
  • Mechanical Compliance Cms 252 um/N
  • Force Factor BL 24.3 Wb/m
  • Equivalent Acoustic Volume Vas 260.0 It.
  • Maximum Linear Displacement Xmax ±14 mm
  • Reference Efficiency ηo 2.250 %
  • Diaphragm Area Sd 1680 Cm2
  • Losses Electrical Resistance Res Ω
  • Voice Coil Inductance@ 1K Hz LE m H

CONSTRUCTIVE CHARACTERISTICS

  • Magnet NEO
  • Voice Coil Winding Copper
  • Voice Coil Former Glass Fibre
  • Cone Paper
  • Surround Treated Cloth
  • Dust Cap Paper
  • Basket Aluminum
  • Depth 252 mm
  • Bolt circle diameter 525 mm
  • Baffle cutout diameter 505 mm
  • Flange and gasket thickness 15 mm
  • Air volume occupied by driver 16.0 dm3

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