Eighteen Sound 8CX650
Coaxial
8″ / 200 mm
Nominal diameter
65 Hz
Resonance
0.35
Q factor
93 dB
Sensitivity
± 6 mm
Linear excursion
400 W
Program Power
![Eighteen Sound 8CX650 Coaxial](/18Sound/8CX650/18Sound_8CX650_(Photo_1).jpg)
![Eighteen Sound 8CX650 Coaxial](/18Sound/8CX650/18Sound_8CX650_(Photo_2).png)
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 92.7
- dB
- Frequency response
- 90 - 4700
- Hz
- Resonance frequency (free air)
- fS
- 65.0
- Hz
- Mechanical quality factor
- QMS
- 6.40
- Electrical quality factor
- QES
- 0.37
- Total quality factor
- QTS
- 0.35
- Maximum linear excursion
- xmax
- 6.0
- mm
- Air volume displaced at xmax
- VD
- 136
- cm³
- Power handling
- P
- 200
- W
- Program power
- Pmax
- 400
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 4.9
- Ω
- Inductance (1kHz)
- LE
- 0.7
- mH
- VC Diameter
- 65
- mm
- Winding material
- Edgewound Aluminum
- Force factor
- Bl
- 12.0
- N/A
- Motor constant
- Bl/√RE
- 5.42
- N/√W
- Effective diameter
- 170
- mm
- Effective area
- SD
- 227
- cm²
- Moving mass
- MMS
- 25.6
- g
- Moving mass (without air load)
- MMD
- 23.1
- g
- Stiffness
- KMS
- 4.27
- N/mm
- Compliance
- CMS
- 234
- µm/N
- Equivalent volume to the compliance
- VAS
- 16.6
- L
- Mechanical resistance
- RMS
- 1.63
- N·s/m
- Nominal diameter
- 8
- ″
- 200
- mm
- Overall diameter
- 210
- mm
- Baffle cutout diameter
- 185
- mm
- Overall depth
- 132
- mm
- Flange thickness
- 8
- mm
- Mounting depth
- 124
- mm
- Volume occupied by the driver (estimated)
- 1.9
- L
- Net weight
- 5.6
- kg
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
![Eighteen Sound 8CX650 Impedance](/18Sound/8CX650/18Sound_8CX650_(Impedance).png)
![Eighteen Sound 8CX650 SPL](/18Sound/8CX650/18Sound_8CX650_(Frequency_response).png)
![Eighteen Sound 8CX650 Directivity map](/18Sound/8CX650/18Sound_8CX650_(Directivity_map).png)
![Eighteen Sound 8CX650 Dimensions](/18Sound/8CX650/18Sound_8CX650_(Dimensions).jpg)
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)