Transducer Size (Millimeters)203.2
DC Resistance5.56
Resonant Frequency73.93
Half Space Sensitivity94.82
Rated Noise Power220
Test Spectrum Bandwidth70Hz-700Hz

Transducer Size (Millimeters) 203.2
DC Resistance 5.56 Ω±5.0%
Resonant Frequency 73.93 Hz15%
Half Space Sensitivity @ 2.83V94.82 dB±1.01
Sensitivity @ 1W/1m94.4 dB±1.01
Rated Noise Power (IEC 268-5 18.1)220 W
Test Spectrum Bandwidth 70Hz-700Hz 12 dB/Oc
Effective Piston Area 217.7 cm2
Moving Mass 20.3 g
Motor Force Factor 11.49 T•m
Voice Coil Inner Diameter 45.5 mm
Gap Height 6 mm
Maximum Linear Excursion 2.2 mm
Ferrofluid Type
Minimum Impedance 7.32 Ω±7.5%
Voice Coil Inductance 0.48 mH
Mechanical Q Factor 3.03
Electrical Q Factor 0.4
Total Q Factor 0.35
Ratio 210.62 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 228.7 μm/N
Effective Cone Diameter 16.7 cm
Motor Efficiency Factor 23.7 (T•m2)/Ω
Voice Coil Former Material KSV
Transducer Mass 2.4 Kg
Equivalent Volume 15.04 L

This 8 inch 8 ohm speaker features a FEA optimized ferrite magnet motor, a 1.8 inch high-temperature voice coil, vented yoke for motor colling, 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.