Features
- 3000 W continuous program power capacity
- 150 mm (6 in) copper voice coil
- 30 - 1000 Hz response
- 95 dB sensitivity
- Ventilated voice coil and aluminium demodulating ring
- 60 mm peak-to-peak excursion before damage
- Double silicone spider with optimized compliance
- The next generation 21' subwoofer from B&C features a massive neodymium ring magnet coupled with a 150 mm (6') split winding voice coil, that safely allows over 60 mm (2.5') of controlled peak-to-peak excursion. The newly engineered, ventilated chassis and double silicone spider keep things safe and cool.
Specifications
- Nominal Diameter530 mm (21.0 in)
- Nominal Impedance4 Ω
- Minimum Impedance4.0 Ω
- Nominal Power Handling11500 W
- Continuous power handling23000 W
- Sensitivity (1W/1m)395.0 dB
- Frequency Range30 - 1000 Hz
- Voice Coil Diameter150 mm (6.0 in)
- Winding MaterialCopper
- Former MaterialGlass Fibre
- Winding Depth30.0 mm (1.18 in)
- Magnetic Gap Depth12.0 mm (0.5 in)
- Flux Density1.2 T
Design
- Surround ShapeTriple Roll
- Cone ShapeRadial
- Magnet MaterialNeodymium Ring
- SpiderDouble Silicone
- Pole DesignT-Pole
- Woofer Cone TreatmentTWP Waterproof Both Sides
- Recommended Enclosure190.0 dm3 (6.71 ft3)
- Recommended Tuning33 Hz
Parameters4
- Resonance Frequency29 Hz
- Re3.0 Ω
- Qes0.27
- Qms8.1
- Qts0.26
- Vas254.0 dm3 (8.9 ft3)
- Sd1680.0 cm2 (260.4 in2)
- η₀2.0 %
- Xmax± 15.0 mm
- Xvar± 16.0 mm
- Mms494.0 g
- Bl32.6 Txm
- Le1.3 mH
- EBP107 Hz
Mounting and Shipping Info
- Overall Diameter547 mm (21.5 in)
- Bolt Circle Diameter527 mm (20.7 in)
- Baffle Cutout Diameter508.0 mm (20.0 in)
- Depth250 mm (8.2 in)
- Flange and Gasket Thickness16 mm (0.62 in)
- Air Volume Occupied by Driver0.0 dm3 (0.0 ft3)
- Net Weight18.0 kg (40.0 lb)
- Shipping Units1
- Shipping Weight20.3 kg (44.75 lb)
- Shipping Box570x570x320 mm (22.44x22.44x12.60 in)
- 2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated minumum impedance. Loudspeaker in free air.
- Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
- Applied RMS Voltage is set to 2V for 4 ohm Nominal Impedance
- Thiele-Small parameters are measured after a high level 20 Hz sine wave preconditioning test.