Transducer Size (Millimeters)133.35
DC Resistance3.74
Resonant Frequency87.42
Half Space Sensitivity89.21
Rated Noise Power25
Test Spectrum Bandwidth20Hz-4KHz

Transducer Size (Millimeters) 133.35
DC Resistance 3.74 Ω±5.0%
Resonant Frequency 87.42 Hz15%
Half Space Sensitivity @ 2.83V89.21 dB±1.01
Sensitivity @ 1W/1m87.2 dB±1.01
Rated Noise Power (IEC 268-5 18.1)25 W
Test Spectrum Bandwidth 20Hz-4KHz 12 dB/Oc
Effective Piston Area 89.9 cm2
Moving Mass 8.6 g
Motor Force Factor 4.92 T•m
Voice Coil Inner Diameter 25.73 mm
Gap Height 6 mm
Maximum Linear Excursion 2.5 mm
Ferrofluid Type
Minimum Impedance 5.08 Ω±7.5%
Voice Coil Inductance 0.18 mH
Mechanical Q Factor 3.53
Electrical Q Factor 0.73
Total Q Factor 0.6
Ratio 144.97 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 386.4 μm/N
Effective Cone Diameter 10.7 cm
Motor Efficiency Factor 6.5 (T•m2)/Ω
Voice Coil Former Material ASV
Transducer Mass 0.66 Kg
Equivalent Volume 4.39 L

This 5.25 inch 4 ohm driver is a member of the Heritage family.