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 Resistance5.56 Ω±5.0%
Resonant Frequency73.93 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 Bandwidth70Hz-700Hz 12 dB/Oc
Effective Piston Area217.7 cm2
Moving Mass20.3 g
Motor Force Factor11.49 T•m
Voice Coil Inner Diameter45.5 mm
Gap Height6 mm
Maximum Linear Excursion2.2 mm
Ferrofluid Type
Minimum Impedance7.32 Ω±7.5%
Voice Coil Inductance0.48 mH
Mechanical Q Factor3.03
Electrical Q Factor0.4
Total Q Factor0.35
Ratio210.62 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance228.7 μm/N
Effective Cone Diameter16.7 cm
Motor Efficiency Factor23.7 (T•m2)/Ω
Voice Coil Former MaterialKSV
Transducer Mass2.4 Kg
Equivalent Volume15.04 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.