B&C Speakers 21IPAL

Subwoofer 21", 5000 W continuous, 37-1000 Hz, 99 dB

• ​5000 W continuous program power capacity
• ​153 mm (6 in) split winding aluminium voice coil
  
  37 - 1000 Hz response
  
  ​99 dB sensitivity
  ​Neodymium magnet allows a very high force factor and linear excursion
  ​Double silicone spider with optimized compliance
  ​80 mm peak-to-peak excursion before damage
  ​Ventilated voice coil gap for reduced power compression​
  

CARATTERISTICHE

• Nominal Diameter: 530 mm (21 in)
  
• Minimum Impedance: 1.1 Ω
• Continuous Power Handling: 5000 W
• Frequency Range: 37 Hz - 1000 Hz
• Winding Material: Aluminium
• Winding Depth: 48 mm (1.9 in)
• Flux Density: 1.35 T
• Nominal Impedance: 1 Ω
• Nominal Power Handling: 2500 W
• Sensitivity: 99 dB
• Voice Coil Diameter: 153 mm (6 in)
• Former Material: Glass Fibre
• Magnetic Gap Depth: 18 mm (0.7 in)
• Woofer Cone Treatment: TWP Waterproof Both Sides

Parameters

• Fs: 37 Hz
• Qes: 0.22
• Qts: 0.21
• Sd: 1680 cm² (260.4 sq²)
• Xmax: 22 mm
• Mms: 487 g
• Le: 0.5 mH
• Re: 0.7 Ω
• Qms: 4.9
• Vas: 155 dm³ (5.47 ft³)
• η0: 3.2 %
• Xvar: 15 mm
• Bl: 19.1 Tm
• EBP: 168 Hz

Design

• Surround Shape: Triple Roll
• Magnet Material: Neodymium Inside Slug
• Pole Design: T-Pole
• Recommended Enclosure: 200 dm³ (7.06 ft³)
• Cone Shape: Radial
• Spider: Double Silicone
• Woofer Cone Treatment: TWP Waterproof Both Sides
• Recommended Tuning: 40 Hz

Mounting and Shipping Info

• Overall Diameter: 547 mm (21.5 in)
• Baffle Cutout Diameter: 508 mm (20 in)
• Flange and Gasket Thickness: 13 mm (0.51 in)
• Net Weight: 23 kg (50.71 lb)
• Shipping Weight: 25.3 kg (55.78 lb)
• Bolt Circle Diameter: 527 mm (20.7 in)
• Depth: 269 mm (10.59 in)
• Air Volume Occupied by Driver: 16 dm³ (0.56 ft³)
• Shipping Box: 570x570x320 mm (22.44x22.44x12.60 in)