Eighteen Sound 8MB400
8Ω
Woofer
Nominal diameter | 8″ / 200 mm |
Resonance | 64 Hz |
Q factor | 0.38 |
Sensitivity | 93.1 dB |
Linear excursion | ± 5.8 mm |
Program Power | 400 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 93.1dB
- Frequency response 55 - 5200Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 64Hz
- Mechanical quality factor QMS 3.23
- Electrical quality factor QES 0.43
- Total quality factor QTS 0.38
Large signal parameters
- Maximum linear excursion xmax 5.8mm
- Air volume displaced at xmax VD 132cm³
- Power handling P 280W
- Program power Pmax 400W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.0Ω
- Inductance (1kHz) LE 0.96mH
- VC Diameter 50mm
- Winding material Aluminum
Magnet
- Force factor Bl 9.3N/A
- Motor constant Bl/√RE 4.16N/√W
- Material Ferrite
Diaphragm
- Effective diameter 170mm
- Effective area SD 227cm²
- Moving mass MMS 18g
- Moving mass (without air load) MMD 15.5g
- Material Weather protected
Suspensions
- Stiffness KMS 2.91N/mm
- Compliance CMS 344µm/N
- Equivalent volume to the compliance VAS 23.9L
- Mechanical resistance RMS 2.24N·s/m
Dimensions
- Nominal diameter 8″
- 200mm
- Overall diameter 210mm
- Baffle cutout diameter 186mm
- Overall depth 99mm
- Flange thickness 14mm
- Mounting depth 85mm
- Volume occupied by the driver (estimated) 1.2L
- Net weight 3.6kg
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