Transducer Size (Millimeters)381
DC Resistance5.1
Resonant Frequency42
Half Space Sensitivity98.01
Rated Noise Power1200
Test Spectrum Bandwidth50Hz -500Hz

Transducer Size (Millimeters)381
DC Resistance5.1 Ω±5.0%
Resonant Frequency42 Hz15%
Half Space Sensitivity @ 2.83V98.01 dB±1.01
Sensitivity @ 1W/1m97.1 dB±1.01
Rated Noise Power (IEC 268-5 18.1)1200 W
Test Spectrum Bandwidth50Hz -500Hz 12 dB/Oc
Effective Piston Area870.9 cm2
Moving Mass107.9 g
Motor Force Factor25.5 T•m
Voice Coil Inner Diameter99.97 mm
Gap Height12 mm
Maximum Linear Excursion7 mm
Ferrofluid Type
Minimum Impedance6.52 Ω±7.5%
Voice Coil Inductance0.75 mH
Mechanical Q Factor4.5
Electrical Q Factor0.23
Total Q Factor0.22
Ratio190.91 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance135 μm/N
Effective Cone Diameter33.3 cm
Motor Efficiency Factor127.5 (T•m2)/Ω
Voice Coil Former MaterialTGL
Transducer Mass7.2 Kg
Equivalent Volume143.9 L

This 15 inch 8 ohm speaker features a FEA optimized Neo magnet motor, a 4in high-temperature CCAW voice coil, and a high strength cast aluminum frame, specially designed motor cooling system incorporate with the cast aluminum heatsink can dramatically increase the power handling and reduce the power compression, the multi-roll surround and spider have been optimized to reduce distortion over the excursion range of this transducer.