Beyma SM-118/N
8Ω
Woofer
| Nominal diameter | 18″ / 460 mm |
| Resonance | 42 Hz |
| Q factor | 0.58 |
| Sensitivity | 95.2 dB |
| Linear excursion | ± 7.3 mm |
| Program Power | 800 W |
Discontinued
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 95.2dB
- Frequency response 40 - 4000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 42Hz
- Mechanical quality factor QMS 5.50
- Electrical quality factor QES 0.65
- Total quality factor QTS 0.58
Large signal parameters
- Maximum linear excursion xmax 7.3mm
- Maximum excursion before damage xlim 15mm
- Air volume displaced at xmax VD 834cm³
- Power handling P 400W
- Program power Pmax 800W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 6.3Ω
- Inductance (1kHz) LE 1.1mH
- VC Diameter 77mm
- Winding height HVC 17.5mm
Magnet
- Force factor Bl 18.3N/A
- Motor constant Bl/√RE 7.29N/√W
- Air gap height HAG 7mm
- Material Ferrite
Diaphragm
- Effective diameter 383mm
- Effective area SD 1150cm²
- Moving mass MMS 130g
- Moving mass (without air load) MMD 102g
Suspensions
- Stiffness KMS 9.09N/mm
- Compliance CMS 110µm/N
- Equivalent volume to the compliance VAS 206L
- Mechanical resistance RMS 6.2N·s/m
Dimensions
- Nominal diameter 18″
- 460mm
- Volume occupied by the driver (estimated) 3.1L
- Net weight 7.0kg
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Export this driver to a simulation software:
Closed Box Simulator·
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