Eighteen Sound 8M400
8Ω
Mid-range
| Nominal diameter | 8″ / 200 mm |
| Resonance | 90 Hz |
| Q factor | 0.27 |
| Sensitivity | 97.2 dB |
| Linear excursion | ± 3 mm |
| Program Power | 320 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 97.2dB
- Frequency response 120 - 6100Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 90Hz
- Mechanical quality factor QMS 6.20
- Electrical quality factor QES 0.28
- Total quality factor QTS 0.27
Large signal parameters
- Maximum linear excursion (one way) xmax 3mm
- Maximum excursion before damage xlim 6.5mm
- Air volume displaced at xmax VD 68cm³
- Power handling P 250W
- Program power Pmax 320W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.2Ω
- Inductance (1kHz) LE 0.95mH
- VC Diameter 51mm
- Winding material Aluminum
Magnet
- Force factor Bl 12.2N/A
- Motor constant Bl/√RE 5.35N/√W
- Material Ferrite
Diaphragm
- Effective diameter 170mm
- Effective area SD 227cm²
- Moving mass MMS 14g
- Moving mass (without air load) MMD 11.5g
- Material Curvilinear, Paper
Suspensions
- Stiffness KMS 4.51N/mm
- Compliance CMS 222µm/N
- Equivalent volume to the compliance VAS 16.2L
- Mechanical resistance RMS 1.28N·s/m
- Surround material M-roll, Polycotton
Dimensions
- Nominal diameter 8″
- 200mm
- Overall diameter 210mm
- Baffle cutout diameter 184mm
- Overall depth 106mm
- Flange thickness 15mm
- Mounting depth 91mm
- Volume occupied by the driver (estimated) 1.4L
- Net weight 4.5kg
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Export this driver to a simulation software:
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