Oberton 8NM200
Mid-range
8″ / 210 mm
Nominal diameter
84 Hz
Resonance
0.2
Q factor
97 dB
Sensitivity
± 2.75 mm
Linear excursion
400 W
Program Power
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 97.4
- dB
- Frequency response
- 100 - 4000
- Hz
- Resonance frequency (free air)
- fS
- 83.9
- Hz
- Mechanical quality factor
- QMS
- 11.30
- Electrical quality factor
- QES
- 0.21
- Total quality factor
- QTS
- 0.20
- Maximum linear excursion
- xmax
- 2.75
- mm
- Air volume displaced at xmax
- VD
- 56
- cm³
- Power handling
- P
- 200
- W
- Program power
- Pmax
- 400
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 5.3
- Ω
- Inductance (1kHz)
- LE
- 0.37
- mH
- VC Diameter
- 51
- mm
- Winding height
- HVC
- 10
- mm
- Winding material
- Aluminium
- Former material
- Kapton
- Flux density
- B
- 1.55
- T
- Force factor
- Bl
- 14.88
- N/A
- Motor constant
- Bl/√RE
- 6.49
- N/√W
- Air gap height
- HAG
- 9
- mm
- Material
- Neodymium
- Effective diameter
- 160
- mm
- Effective area
- SD
- 202
- cm²
- Moving mass
- MMS
- 16.6
- g
- Moving mass (without air load)
- MMD
- 14.3
- g
- Material
- Paper with glassfiber
- Stiffness
- KMS
- 4.61
- N/mm
- Compliance
- CMS
- 217
- µm/N
- Equivalent volume to the compliance
- VAS
- 12.1
- L
- Mechanical resistance
- RMS
- 0.77
- N·s/m
- Nominal diameter
- 8
- ″
- 210
- mm
- Overall diameter
- 225
- mm
- Baffle cutout diameter
- 187
- mm
- Overall depth
- 82
- mm
- Volume occupied by the driver (estimated)
- 0.74
- L
- Net weight
- 2.0
- kg
- Frame material
- Die cast aluminium