Transducer Size (Millimeters)381
DC Resistance5.23
Resonant Frequency40.43
Half Space Sensitivity98.4
Rated Noise Power450
Test Spectrum Bandwidth40Hz-400Hz

Transducer Size (Millimeters) 381
DC Resistance 5.23 Ω±5.0%
Resonant Frequency 40.43 Hz15%
Half Space Sensitivity @ 2.83V98.4 dB±1.01
Sensitivity @ 1W/1m98.1 dB±1.01
Rated Noise Power (IEC 268-5 18.1)450 W
Test Spectrum Bandwidth 40Hz-400Hz 12 dB/Oc
Effective Piston Area 865.7 cm2
Moving Mass 86.9 g
Motor Force Factor 21.5 T•m
Voice Coil Inner Diameter 75.75 mm
Gap Height 8 mm
Maximum Linear Excursion 2.2 mm
Ferrofluid Type
Minimum Impedance 7.51 Ω±7.5%
Voice Coil Inductance 1.16 mH
Mechanical Q Factor 5.85
Electrical Q Factor 0.25
Total Q Factor 0.24
Ratio 168.46 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 178.3 μm/N
Effective Cone Diameter 33.2 cm
Motor Efficiency Factor 88.3 (T•m2)/Ω
Voice Coil Former Material GSV
Transducer Mass 6.3 Kg
Equivalent Volume 187.7 L

This 15 inch 8 ohm speaker features a FEA optimized ferrite magnet motor, 2.5inch voice coil, cloth surround, paper cone, a vented yoke for motor cooling, and a high strength stamped steel frame. Kevlar loaded non-pressed paper cone to help dampen and control cone resonance. The multi-roll surround and spider have been optimized to reduce distortion over the excursion range of this transducer.