GBS-85N25PR07-04

Transducer Size (Millimeters)88.9
DC Resistance3.47
Resonant Frequency133.32
Half Space Sensitivity84.95
Rated Noise Power12
Test Spectrum Bandwidth100-800Hz

Transducer Size (Millimeters)88.9
DC Resistance3.47 Ω±5.0%
Resonant Frequency133.32 Hz15%
Half Space Sensitivity @ 2.83V84.95 dB±1.01
Sensitivity @ 1W/1m82 dB±1.01
Rated Noise Power (IEC 268-5 18.1)12 W
Test Spectrum Bandwidth100-800Hz 12 dB/Oc
Effective Piston Area35.3 cm2
Moving Mass5.7 g
Motor Force Factor4.66 T•m
Voice Coil Inner Diameter25.73 mm
Gap Height3 mm
Maximum Linear Excursion1.7 mm
Ferrofluid Type
Minimum Impedance4.02 Ω±7.5%
Voice Coil Inductance0.35 mH
Mechanical Q Factor4.75
Electrical Q Factor0.77
Total Q Factor0.66
Ratio202 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance248.2 μm/N
Effective Cone Diameter6.7 cm
Motor Efficiency Factor6.3 (T•m2)/Ω
Voice Coil Former MaterialASV
Transducer Mass0.13 Kg
Equivalent Volume0.43 L

GBS 3.5inch woofer. 4Ohm, Paper cone, rubber surround, with Neo magnets . 6 layers voice coil.