Eighteen Sound 15NLW9500
4Ω
8ΩSubwoofer
Nominal diameter | 15″ / 380 mm |
Resonance | 34 Hz |
Q factor | 0.29 |
Sensitivity | 93.8 dB |
Linear excursion | ± 9 mm |
Program Power | 1400 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 93.8dB
- Frequency response 42 - 2000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 34Hz
- Mechanical quality factor QMS 7.84
- Electrical quality factor QES 0.30
- Total quality factor QTS 0.29
Large signal parameters
- Maximum linear excursion xmax 9mm
- Air volume displaced at xmax VD 765cm³
- Power handling P 1000W
- Program power Pmax 1400W
Voice Coil
- Nominal impedance Z 4Ω
- DC resistance RE 2.7Ω
- Inductance (1kHz) LE 0.58mH
- VC Diameter 100mm
- Winding material Copper
Magnet
- Force factor Bl 18.2N/A
- Motor constant Bl/√RE 11.1N/√W
- Material Neodymium
Diaphragm
- Effective diameter 329mm
- Effective area SD 850cm²
- Moving mass MMS 172g
- Moving mass (without air load) MMD 155g
Suspensions
- Stiffness KMS 7.87N/mm
- Compliance CMS 127µm/N
- Equivalent volume to the compliance VAS 148L
- Mechanical resistance RMS 4.69N·s/m
Dimensions
- Nominal diameter 15″
- 380mm
- Overall diameter 387mm
- Baffle cutout diameter 353mm
- Overall depth 177mm
- Flange thickness 24mm
- Mounting depth 153mm
- Volume occupied by the driver (estimated) 3.9L
- Net weight 7.0kg
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