Eighteen Sound 15ND840
8Ω
Subwoofer
| Nominal diameter | 15″ / 393 mm |
| Resonance | 43 Hz |
| Q factor | 0.37 |
| Sensitivity | 97.7 dB |
| Linear excursion | ± 9.5 mm |
| Program Power | 1200 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 97.7dB
- Frequency response 38 - 4000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 43Hz
- Mechanical quality factor QMS 6.60
- Electrical quality factor QES 0.39
- Total quality factor QTS 0.37
Large signal parameters
- Maximum linear excursion xmax 9.5mm
- Air volume displaced at xmax VD 837cm³
- Power handling P 600W
- Program power Pmax 1200W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.0Ω
- Inductance (1kHz) LE 0.43mH
- VC Diameter 75mm
- Winding height HVC 23.5mm
Magnet
- Force factor Bl 17.9N/A
- Motor constant Bl/√RE 8.01N/√W
- Air gap height HAG 9mm
Diaphragm
- Effective diameter 335mm
- Effective area SD 881cm²
- Moving mass MMS 94g
- Moving mass (without air load) MMD 75.8g
Suspensions
- Stiffness KMS 6.76N/mm
- Compliance CMS 148µm/N
- Equivalent volume to the compliance VAS 163L
- Mechanical resistance RMS 3.85N·s/m
Dimensions
- Nominal diameter 15″
- 393mm
- Overall diameter 393mm
- Baffle cutout diameter 354mm
- Overall depth 184mm
- Flange thickness 13mm
- Mounting depth 171mm
- Volume occupied by the driver (estimated) 3.1L
- Net weight 4.7kg
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Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
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