Eminence KAPPA PRO-12A
Mid Bass
12″ / 305 mm
Nominal diameter
37 Hz
Resonance
0.24
Q factor
95 dB
Sensitivity
± 4.8 mm
Linear excursion
1000 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 95.0
- dB
- Frequency response
- 57 - 2800
- Hz
- Resonance frequency (free air)
- fS
- 37.0
- Hz
- Mechanical quality factor
- QMS
- 6.93
- Electrical quality factor
- QES
- 0.25
- Total quality factor
- QTS
- 0.24
- Maximum linear excursion
- xmax
- 4.8
- mm
- Maximum excursion before damage
- xlim
- 14.8
- mm
- Air volume displaced at xmax
- VD
- 249
- cm³
- Power handling
- P
- 500
- W
- Program power
- Pmax
- 1000
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 5.5
- Ω
- Inductance (1kHz)
- LE
- 1.22
- mH
- VC Diameter
- 76
- mm
- Winding material
- Copper
- Former material
- Polyimide
- Force factor
- Bl
- 17.3
- N/A
- Motor constant
- Bl/√RE
- 7.4
- N/√W
- Air gap height
- HAG
- 9.5
- mm
- Weight
- 2.268
- kg
- Material
- Ferrite
- Effective diameter
- 257
- mm
- Effective area
- SD
- 520
- cm²
- Moving mass
- MMS
- 59
- g
- Moving mass (without air load)
- MMD
- 50.5
- g
- Material
- Paper
- Stiffness
- KMS
- 3.13
- N/mm
- Compliance
- CMS
- 320
- µm/N
- Equivalent volume to the compliance
- VAS
- 121
- L
- Mechanical resistance
- RMS
- 1.98
- N·s/m
- Surround material
- Cloth
- Nominal diameter
- 12
- ″
- 305
- mm
- Overall diameter
- 315
- mm
- Baffle cutout diameter
- 281
- mm
- Overall depth
- 158
- mm
- Volume occupied by the driver
- 2.55
- L
- Net weight
- 7.53
- kg
- Frame material
- Die-cast aluminum