accuton C168-6-990
Mid-range
6.5″ / 168 mm
Nominal diameter
55 Hz
Resonance
0.21
Q factor
92 dB
Sensitivity
± 3 mm
Linear excursion
240 W
Program Power
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 92.4
- dB
- Resonance frequency (free air)
- fS
- 55.0
- Hz
- Mechanical quality factor
- QMS
- 4.76
- Electrical quality factor
- QES
- 0.22
- Total quality factor
- QTS
- 0.21
- Maximum linear excursion
- xmax
- 3.0
- mm
- Air volume displaced at xmax
- VD
- 40
- cm³
- Power handling
- P
- 120
- W
- Program power
- Pmax
- 240
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 5.4
- Ω
- Inductance (1kHz)
- LE
- 0.06
- mH
- Winding material
- Copper
- Former material
- Titanium
- Force factor
- Bl
- 11.66
- N/A
- Motor constant
- Bl/√RE
- 5.02
- N/√W
- Diameter
- 146
- mm
- Height
- 28
- mm
- Effective diameter
- 130
- mm
- Effective area
- SD
- 133
- cm²
- Moving mass
- MMS
- 16.1
- g
- Moving mass (without air load)
- MMD
- 14.9
- g
- Material
- Ceramic
- Stiffness
- KMS
- 1.92
- N/mm
- Compliance
- CMS
- 520
- µm/N
- Equivalent volume to the compliance
- VAS
- 13.1
- L
- Mechanical resistance
- RMS
- 1.17
- N·s/m
- Nominal diameter
- 6.5
- ″
- 168
- mm
- Overall diameter
- 168
- mm
- Baffle cutout diameter
- 147
- mm
- Overall depth
- 50
- mm
- Flange thickness
- 6
- mm
- Mounting depth
- 44
- mm
- Volume occupied by the driver (estimated)
- 0.26
- L