Transducer Size (Millimeters)304.8
DC Resistance5.45
Resonant Frequency59.07
Half Space Sensitivity96.85
Rated Noise Power350
Test Spectrum Bandwidth60Hz-600Hz

Transducer Size (Millimeters)304.8
DC Resistance5.45 Ω±5.0%
Resonant Frequency59.07 Hz15%
Half Space Sensitivity @ 2.83V96.85 dB±1.01
Sensitivity @ 1W/1m96.5 dB±1.01
Rated Noise Power (IEC 268-5 18.1)350 W
Test Spectrum Bandwidth60Hz-600Hz 12 dB/Oc
Effective Piston Area547.4 cm2
Moving Mass51.4 g
Motor Force Factor15.22 T•m
Voice Coil Inner Diameter65.5 mm
Gap Height8 mm
Maximum Linear Excursion2.5 mm
Ferrofluid Type
Minimum Impedance7.39 Ω±7.5%
Voice Coil Inductance0.71 mH
Mechanical Q Factor4.31
Electrical Q Factor0.45
Total Q Factor0.41
Ratio145.5 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance141.2 μm/N
Effective Cone Diameter26.4 cm
Motor Efficiency Factor42.5 (T•m2)/Ω
Voice Coil Former MaterialGSV
Transducer Mass4.9 Kg
Equivalent Volume59.41 L

This 12 inch 8 ohm speaker, features a FEA optimized ferrite magnet motor, a 2.5 inch high-temperature voice coil, a vented yoke for motor cooling, and a high strength stamped steel frame. It also features 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.