Beyma 12BR70
8Ω
Subwoofer
| Nominal diameter | 12″ / 300 mm |
| Resonance | 31 Hz |
| Q factor | 0.50 |
| Sensitivity | 90.4 dB |
| Linear excursion | ± 8 mm |
| Program Power | 250 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 90.4dB
- Frequency response 35 - 4000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 31Hz
- Mechanical quality factor QMS 4.40
- Electrical quality factor QES 0.56
- Total quality factor QTS 0.50
Large signal parameters
- Maximum linear excursion (one way) xmax 8mm
- Maximum excursion before damage xlim 26mm
- Air volume displaced at xmax VD 432cm³
- Power handling P 125W
- Program power Pmax 250W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.6Ω
- Inductance (1kHz) LE 0.8mH
- VC Diameter 50.8mm
- Winding height HVC 19mm
Magnet
- Force factor Bl 12.1N/A
- Motor constant Bl/√RE 5.11N/√W
- Air gap height HAG 7mm
Diaphragm
- Effective diameter 262mm
- Effective area SD 540cm²
- Moving mass MMS 74g
- Moving mass (without air load) MMD 65.2g
Suspensions
- Stiffness KMS 2.9N/mm
- Compliance CMS 345µm/N
- Equivalent volume to the compliance VAS 142L
- Mechanical resistance RMS 3.3N·s/m
Dimensions
- Nominal diameter 12″
- 300mm
- Overall diameter 312mm
- Baffle cutout diameter 278mm
- Overall depth 134mm
- Volume occupied by the driver (estimated) 1.8L
- Net weight 3.6kg
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Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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