Eighteen Sound 8NW650
8Ω
16ΩWoofer
8″ / 200 mm
Nominal diameter
63 Hz
Resonance
0.25
Q factor
94 dB
Sensitivity
± 5.5 mm
Linear excursion
600 W
Program Power
![Eighteen Sound 8NW650 Woofer](/18Sound/8NW650/18Sound_8NW650_(Photo_1).jpg)
![Eighteen Sound 8NW650 Woofer](/18Sound/8NW650/18Sound_8NW650_(Photo_2).jpg)
- Amazon.com
- $$$
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 93.7
- dB
- Frequency response
- 55 - 6300
- Hz
- Resonance frequency (free air)
- fS
- 63.0
- Hz
- Mechanical quality factor
- QMS
- 3.70
- Electrical quality factor
- QES
- 0.27
- Total quality factor
- QTS
- 0.25
- Maximum linear excursion
- xmax
- 5.5
- mm
- Air volume displaced at xmax
- VD
- 127
- cm³
- Power handling
- P
- 300
- W
- Program power
- Pmax
- 600
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 6.1
- Ω
- Inductance (1kHz)
- LE
- 0.71
- mH
- VC Diameter
- 65
- mm
- Winding material
- Aluminum
- Force factor
- Bl
- 15.2
- N/A
- Motor constant
- Bl/√RE
- 6.15
- N/√W
- Material
- Neodymium
- Effective diameter
- 171
- mm
- Effective area
- SD
- 230
- cm²
- Moving mass
- MMS
- 26
- g
- Moving mass (without air load)
- MMD
- 23.5
- g
- Material
- Weather protected
- Stiffness
- KMS
- 4.08
- N/mm
- Compliance
- CMS
- 245
- µm/N
- Equivalent volume to the compliance
- VAS
- 17.8
- L
- Mechanical resistance
- RMS
- 2.78
- N·s/m
- Nominal diameter
- 8
- ″
- 200
- mm
- Overall diameter
- 210
- mm
- Baffle cutout diameter
- 185
- mm
- Overall depth
- 111
- mm
- Flange thickness
- 8
- mm
- Mounting depth
- 103
- mm
- Volume occupied by the driver (estimated)
- 0.97
- L
- Net weight
- 2.4
- kg
Available on (affiliate link)
Specifications
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
![Eighteen Sound 8NW650 Impedance](/18Sound/8NW650/18Sound_8NW650_(Impedance).png)
![Eighteen Sound 8NW650 SPL](/18Sound/8NW650/18Sound_8NW650_(Frequency_response).png)
![Eighteen Sound 8NW650 Dimensions](/18Sound/8NW650/18Sound_8NW650_(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)