B&C Speaker 21DS115
4Ω
8Ω
Subwoofer
| Nominal diameter | 21″ / 530 mm |
| Resonance | 36 Hz |
| Q factor | 0.30 |
| Sensitivity | 95.6 dB |
| Linear excursion | ± 16.5 mm |
| Program power | 3400 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 95.6dB
- Frequency response 35 - 500Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 36Hz
- Mechanical quality factor QMS 8.40
- Electrical quality factor QES 0.31
- Total quality factor QTS 0.30
Large signal parameters
- Maximum linear excursion (one way) xmax 16.5mm
- Air volume displaced at xmax VD 2772cm³
- Power handling P 1700W
- Program power Pmax 3400W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.1Ω
- Inductance (1kHz) LE 4.55mH
- VC Diameter 116mm
- Winding height HVC 40mm
- Winding material Aluminium
- Former material Glass Fibre
Magnet
- Flux density B 0.8T
- Force factor Bl 38N/A
- Motor constant Bl/√RE 16.8N/√W
- Air gap height HAG 14mm
- Material Neodymium Inside Slug
Diaphragm
- Effective diameter 462mm
- Effective area SD 1680cm²
- Moving mass (including air load) MMS 390g
- Moving mass MMD 359g
- Material Waterproof Both Sides
Suspensions
- Stiffness KMS 14.7N/mm
- Compliance CMS 68µm/N
- Equivalent volume to the compliance VAS 198L
- Mechanical resistance RMS 7.67N·s/m
- Spider material Silicone
Dimensions
- Nominal diameter 21″
- 530mm
- Overall diameter 547mm
- Baffle cutout diameter 508mm
- Overall depth 255mm
- Flange thickness 13mm
- Mounting depth 242mm
- Volume occupied by the driver 15L
- Net weight 14.7kg
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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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