Transducer Size (Millimeters)304.8
DC Resistance5.76
Resonant Frequency66.97
Half Space Sensitivity96.28
Rated Noise Power250
Test Spectrum Bandwidth60Hz-600Hz

Transducer Size (Millimeters) 304.8
DC Resistance 5.76 Ω±5.0%
Resonant Frequency 66.97 Hz15%
Half Space Sensitivity @ 2.83V96.28 dB±1.01
Sensitivity @ 1W/1m96.1 dB±1.01
Rated Noise Power (IEC 268-5 18.1)250 W
Test Spectrum Bandwidth 60Hz-600Hz 12 dB/Oc
Effective Piston Area 543.3 cm2
Moving Mass 46.2 g
Motor Force Factor 13.96 T•m
Voice Coil Inner Diameter 50.5 mm
Gap Height 8 mm
Maximum Linear Excursion 2.4 mm
Ferrofluid Type
Minimum Impedance 7.73 Ω±7.5%
Voice Coil Inductance 0.66 mH
Mechanical Q Factor 4.76
Electrical Q Factor 0.58
Total Q Factor 0.51
Ratio 130.54 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 122.2 μm/N
Effective Cone Diameter 26.3 cm
Motor Efficiency Factor 33.8 (T•m2)/Ω
Voice Coil Former Material KSV
Transducer Mass 3.8 Kg
Equivalent Volume 51.43 L

This 12 inch 8 ohm speaker features a FEA optimized ferrite magnet motor, a 2 inch high-temperature voice coil, the yoke with vent can cool magnet system, and a high strength stamped steel frame. The multi-roll surround and spider have been optimized to reduce distortion over the excursion range of this transducer.