Eighteen Sound 15NMB420
8Ω
Subwoofer
| Nominal diameter | 15″ / 380 mm |
| Resonance | 42 Hz |
| Q factor | 0.29 |
| Sensitivity | 99.4 dB |
| Linear excursion | ± 6.5 mm |
| Program Power | 700 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 99.4dB
- Frequency response 40 - 5000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 42Hz
- Mechanical quality factor QMS 6.00
- Electrical quality factor QES 0.30
- Total quality factor QTS 0.29
Large signal parameters
- Maximum linear excursion xmax 6.5mm
- Air volume displaced at xmax VD 585cm³
- Power handling P 450W
- Program power Pmax 700W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.6Ω
- Inductance (1kHz) LE 0.8mH
- VC Diameter 75mm
- Winding material Aluminum
Magnet
- Force factor Bl 19N/A
- Motor constant Bl/√RE 8.03N/√W
- Material Neodymium
Diaphragm
- Effective diameter 339mm
- Effective area SD 900cm²
- Moving mass MMS 73g
- Moving mass (without air load) MMD 54.7g
- Material Weather protected
Suspensions
- Stiffness KMS 5.08N/mm
- Compliance CMS 197µm/N
- Equivalent volume to the compliance VAS 225L
- Mechanical resistance RMS 3.21N·s/m
Dimensions
- Nominal diameter 15″
- 380mm
- Overall diameter 387mm
- Baffle cutout diameter 353mm
- Overall depth 169mm
- Flange thickness 11mm
- Mounting depth 158mm
- Volume occupied by the driver (estimated) 2.6L
- Net weight 3.9kg
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Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
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