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 Resistance3.74 Ω±5.0%
Resonant Frequency87.42 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 Bandwidth20Hz-4KHz 12 dB/Oc
Effective Piston Area89.9 cm2
Moving Mass8.6 g
Motor Force Factor4.92 T•m
Voice Coil Inner Diameter25.73 mm
Gap Height6 mm
Maximum Linear Excursion2.5 mm
Ferrofluid Type
Minimum Impedance5.08 Ω±7.5%
Voice Coil Inductance0.18 mH
Mechanical Q Factor3.53
Electrical Q Factor0.73
Total Q Factor0.6
Ratio144.97 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance386.4 μm/N
Effective Cone Diameter10.7 cm
Motor Efficiency Factor6.5 (T•m2)/Ω
Voice Coil Former MaterialASV
Transducer Mass0.66 Kg
Equivalent Volume4.39 L

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