Eighteen Sound 8MB720
8Ω
Woofer
| Nominal diameter | 8″ / 225 mm |
| Resonance | 108 Hz |
| Q factor | 0.32 |
| Sensitivity | 97.9 dB |
| Linear excursion | ± 2.3 mm |
| Program Power | 500 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 97.9dB
- Frequency response 150 - 3500Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 108Hz
- Mechanical quality factor QMS 4.60
- Electrical quality factor QES 0.35
- Total quality factor QTS 0.32
Large signal parameters
- Maximum linear excursion xmax 2.3mm
- Air volume displaced at xmax VD 51cm³
- Power handling P 250W
- Program power Pmax 500W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.2Ω
- Inductance (1kHz) LE 0.11mH
- VC Diameter 51mm
Magnet
- Force factor Bl 13.4N/A
- Motor constant Bl/√RE 5.88N/√W
- Material Ferrite
Diaphragm
- Effective diameter 170mm
- Effective area SD 227cm²
- Moving mass MMS 18g
- Moving mass (without air load) MMD 15.4g
Suspensions
- Stiffness KMS 8.2N/mm
- Compliance CMS 122µm/N
- Equivalent volume to the compliance VAS 9L
- Mechanical resistance RMS 2.66N·s/m
Dimensions
- Nominal diameter 8″
- 225mm
- Overall diameter 225mm
- Baffle cutout diameter 186mm
- Overall depth 105mm
- Flange thickness 11mm
- Mounting depth 94mm
- Volume occupied by the driver (estimated) 1.5L
- Net weight 4.6kg
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Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
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