B&C Speaker 21SW150
4Ω
Low frequency
| Nominal diameter | 21″ / 530 mm |
| Resonance | 29 Hz |
| Q factor | 0.26 |
| Sensitivity | 95 dB |
| Linear excursion | ± 15 mm |
| Program power | 3000 W |
Discontinued
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 95dB
- Frequency response 30 - 1000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 29Hz
- Mechanical quality factor QMS 8.10
- Electrical quality factor QES 0.27
- Total quality factor QTS 0.26
Large signal parameters
- Maximum linear excursion (one way) xmax 15mm
- Air volume displaced at xmax VD 2520cm³
- Power handling P 1500W
- Program power Pmax 3000W
Voice Coil
- Nominal impedance Z 4Ω
- DC resistance RE 3.0Ω
- Inductance (1kHz) LE 1.3mH
- VC Diameter 150mm
- Winding height HVC 30mm
- Winding material Copper
- Former material Glass Fibre
Magnet
- Flux density B 1.2T
- Force factor Bl 32.6N/A
- Motor constant Bl/√RE 18.8N/√W
- Air gap height HAG 12mm
- Material Neodymium Ring
Diaphragm
- Effective diameter 462mm
- Effective area SD 1680cm²
- Moving mass (including air load) MMS 494g
- Moving mass MMD 446g
- Material Waterproof
Suspensions
- Stiffness KMS 15.9N/mm
- Compliance CMS 63µm/N
- Equivalent volume to the compliance VAS 254L
- Mechanical resistance RMS 11.1N·s/m
- Spider material Double Silicone
Dimensions
- Nominal diameter 21″
- 530mm
- Overall diameter 547mm
- Baffle cutout diameter 508mm
- Overall depth 250mm
- Flange thickness 16mm
- Mounting depth 234mm
- Volume occupied by the driver 15L
- Net weight 18.0kg
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Export this driver to a box design software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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