Eighteen Sound 8M400F
8Ω
Woofer
| Nominal diameter | 8″ / 210 mm |
| Resonance | 89 Hz |
| Q factor | 0.26 |
| Sensitivity | 96.5 dB |
| Linear excursion | ± 3 mm |
| Program Power | 320 W |
.png)
Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 96.5dB
- Frequency response 200 - 9000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 89Hz
- Mechanical quality factor QMS 4.03
- Electrical quality factor QES 0.28
- Total quality factor QTS 0.26
Large signal parameters
- Maximum linear excursion (one way) xmax 3mm
- Air volume displaced at xmax VD 68cm³
- Power handling P 250W
- Program power Pmax 320W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.1Ω
- Inductance (1kHz) LE 0.7mH
- VC Diameter 51mm
Magnet
- Force factor Bl 13.1N/A
- Motor constant Bl/√RE 5.8N/√W
Diaphragm
- Effective diameter 170mm
- Effective area SD 227cm²
- Moving mass MMS 16.9g
- Moving mass (without air load) MMD 14.4g
Suspensions
- Stiffness KMS 5.29N/mm
- Compliance CMS 189µm/N
- Equivalent volume to the compliance VAS 13.7L
- Mechanical resistance RMS 2.35N·s/m
Dimensions
- Nominal diameter 8″
- 210mm
- Overall diameter 210mm
- Baffle cutout diameter 186mm
- Overall depth 106mm
- Flange thickness 15mm
- Mounting depth 91mm
- Volume occupied by the driver (estimated) 1.5L
- Net weight 4.9kg
.png)
.png)
.png)
Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
Amplion.jpg.webp)
.jpg.webp)
.jpg.webp)