Eighteen Sound 15NCX750
8Ω
Coaxial
| Nominal diameter | 15″ / 380 mm |
| Resonance | 49 Hz |
| Q factor | 0.37 |
| Sensitivity | 98.5 dB |
| Linear excursion | ± 5.5 mm |
| Program power | 800 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 98.5dB
- Frequency response 55 - 4500Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 49Hz
- Mechanical quality factor QMS 6.32
- Electrical quality factor QES 0.40
- Total quality factor QTS 0.37
Large signal parameters
- Maximum linear excursion (one way) xmax 5.5mm
- Air volume displaced at xmax VD 485cm³
- Power handling P 400W
- Program power Pmax 800W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.4Ω
- Inductance (1kHz) LE 0.66mH
- VC Diameter 75mm
- Winding material Copper
Magnet
- Force factor Bl 18.4N/A
- Motor constant Bl/√RE 7.92N/√W
- Material Neodymium
Diaphragm
- Effective diameter 335mm
- Effective area SD 881cm²
- Moving mass (including air load) MMS 81g
- Moving mass MMD 62.8g
- Material Water repellent
Suspensions
- Stiffness KMS 7.69N/mm
- Compliance CMS 130µm/N
- Equivalent volume to the compliance VAS 141L
- Mechanical resistance RMS 3.95N·s/m
Dimensions
- Nominal diameter 15″
- 380mm
- Overall diameter 393mm
- Baffle cutout diameter 360mm
- Overall depth 185mm
- Flange thickness 14mm
- Mounting depth 171mm
- Volume occupied by the driver (estimated) 3.2L
- Net weight 4.9kg
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Export this driver to a box design software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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