Eighteen Sound 15NCX750
Coaxial
15″ / 380 mm
Nominal diameter
49 Hz
Resonance
0.37
Q factor
99 dB
Sensitivity
± 5.5 mm
Linear excursion
800 W
Program Power
![Eighteen Sound 15NCX750 Coaxial](/18Sound/15NCX750/18Sound_15NCX750_(Photo).jpg)
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 98.5
- dB
- Frequency response
- 55 - 4500
- Hz
- Resonance frequency (free air)
- fS
- 49.0
- Hz
- Mechanical quality factor
- QMS
- 6.32
- Electrical quality factor
- QES
- 0.40
- Total quality factor
- QTS
- 0.37
- Maximum linear excursion
- xmax
- 5.5
- mm
- Air volume displaced at xmax
- VD
- 485
- cm³
- Power handling
- P
- 400
- W
- Program power
- Pmax
- 800
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 5.4
- Ω
- Inductance (1kHz)
- LE
- 0.66
- mH
- VC Diameter
- 75
- mm
- Winding material
- Copper
- Force factor
- Bl
- 18.4
- N/A
- Motor constant
- Bl/√RE
- 7.92
- N/√W
- Material
- Neodymium
- Effective diameter
- 335
- mm
- Effective area
- SD
- 881
- cm²
- Moving mass
- MMS
- 81
- g
- Moving mass (without air load)
- MMD
- 62.8
- g
- Material
- Water repellent
- Stiffness
- KMS
- 7.69
- N/mm
- Compliance
- CMS
- 130
- µm/N
- Equivalent volume to the compliance
- VAS
- 141
- L
- Mechanical resistance
- RMS
- 3.95
- N·s/m
- Nominal diameter
- 15
- ″
- 380
- mm
- Overall diameter
- 393
- mm
- Baffle cutout diameter
- 360
- mm
- Overall depth
- 185
- mm
- Flange thickness
- 14
- mm
- Mounting depth
- 171
- mm
- Volume occupied by the driver (estimated)
- 3.2
- L
- Net weight
- 4.9
- kg
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
![Eighteen Sound 15NCX750 Impedance](/18Sound/15NCX750/18Sound_15NCX750_(Impedance).png)
![Eighteen Sound 15NCX750 SPL](/18Sound/15NCX750/18Sound_15NCX750_(Frequency_response).png)
![Eighteen Sound 15NCX750 Directivity map](/18Sound/15NCX750/18Sound_15NCX750_(Directivity_map).png)
![Eighteen Sound 15NCX750 Dimensions](/18Sound/15NCX750/18Sound_15NCX750_(Dimensions).png)
Export this driver to a simulation software:
![WinISD](/images/export/WinISD.png)
![Basta!](/images/export/Basta.png)
![Hornresp](/images/export/Hornresp.png)
![QSpeakers](/images/export/QSpeakers.png)
![SpeakerSim](/images/export/SpeakerSim.png)
![MfbLabs](/images/export/MfbLabs.png)
![Speakerbench](/images/export/Speakerbench.png)