B&C 21IPAL 21-Inch Speaker Driver - 2500W, 1 Ohm

B&C 21SW152 21-Inch Speaker Driver Features

- 5000 W continuous program power capacity
- 153 mm (6 inch) 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

B&C 21SW152 21-Inch Speaker Driver Specifications

- Nominal Basket Diameter: 530 mm (21.0 inches)
- Nominal Impedance: 1 Ω
- Minimum Impedance: 1.1 Ω
- Nominal Power Handling: 2500 W
- Continuous Power Handling: 5000 W
- Frequency Response: 37 - 1000 Hz
- Sensitivity: 99.0 dB
- Voice Coil Diameter: 153 mm (6.0 inches)
- Winding Material: Aluminium
- Former Material: Glass Fibre
- Winding Depth: 48 mm (1.9 inches)
- Magnetic Gap Depth: 18.0 mm (0.7 inches)
- Flux Density: 1.35 T
- Connection: Spade Terminals

Design:
- Surround shape: Triple Roll
- Cone shape: Radial
- Magnet material: Neodymium Inside Slug
- Spider: Double Silicone
- Pole design: T-Pole
- Waterproofing Treatment: TWP Waterproof Both Sides
- Recommended enclosure: 200.0 dm³
- Recommended tuning: 40 Hz

Parameters:
- Fs: 37 Hz
- Re: 0.7 Ω
- Qes: 0.22
- Qms: 4.9
- Qts: 0.21
- Vas: 155.0 dm³
- Sd: 1680 cm²
- η₀: 3.2 %
- Xmax: ± 22.0 mm
- Xvar: ± 15.0 mm
- Mms: 487.0 g
- Bl: 19.1 Txm
- Le: 0.5 mH
- EBP: 168 Hz

Physical:
- Overall diameter: 547 mm (21.5 inches)
- Bolt circle diameter: 527 mm (20.7 inches)
- Baffle cutout diameter: 508 mm (20.0 inches)
- Depth: 269 mm (10.59 inches)
- Flange and gasket thickness: 13 mm (0.51 inches)
- Air volume occupied by driver: 16.0 dm³
- Net weight: 23.0 kg

Further Product Information Below

B & C 21IPAL (1 Ohm) Data Sheet (PDF)

B & C 21IPAL Technical Drawing (PDF)