Transducer Size (Millimeters)381
DC Resistance5.46
Resonant Frequency42.65
Half Space Sensitivity95.47
Rated Noise Power200
Test Spectrum Bandwidth40Hz-400Hz

Transducer Size (Millimeters) 381
DC Resistance 5.46 Ω±5.0%
Resonant Frequency 42.65 Hz15%
Half Space Sensitivity @ 2.83V95.47 dB±1.01
Sensitivity @ 1W/1m95 dB±1.01
Rated Noise Power (IEC 268-5 18.1)200 W
Test Spectrum Bandwidth 40Hz-400Hz 12 dB/Oc
Effective Piston Area 855.3 cm2
Moving Mass 64.2 g
Motor Force Factor 11.66 T•m
Voice Coil Inner Diameter 50.5 mm
Gap Height 8 mm
Maximum Linear Excursion 3.3 mm
Ferrofluid Type
Minimum Impedance 7.22 Ω±7.5%
Voice Coil Inductance 0.68 mH
Mechanical Q Factor 6.69
Electrical Q Factor 0.69
Total Q Factor 0.63
Ratio 68.01 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 216.9 μm/N
Effective Cone Diameter 33 cm
Motor Efficiency Factor 24.9 (T•m2)/Ω
Voice Coil Former Material KSV
Transducer Mass 3.48 Kg
Equivalent Volume 222.83 L

This 15 inch 8 ohm speaker features a FEA optimized ferrite magnet motor, a 2 inch high-temperature voice coil, 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.