Transducer Size (Millimeters)165.1
DC Resistance3.02
Resonant Frequency56.12
Half Space Sensitivity91.08
Rated Noise Power30
Test Spectrum Bandwidth20Hz-20KHz

Transducer Size (Millimeters) 165.1
DC Resistance 3.02 Ω±5.0%
Resonant Frequency 56.12 Hz15%
Half Space Sensitivity @ 2.83V91.08 dB±1.01
Sensitivity @ 1W/1m87.7 dB±1.01
Rated Noise Power (IEC 268-5 18.1)30 W
Test Spectrum Bandwidth 20Hz-20KHz 12 dB/Oc
Effective Piston Area 138.9 cm2
Moving Mass 12.4 g
Motor Force Factor 4.23 T•m
Voice Coil Inner Diameter 25.86 mm
Gap Height 4 mm
Maximum Linear Excursion 3.8 mm
Ferrofluid Type N/A
Minimum Impedance 3.67 Ω±7.5%
Voice Coil Inductance 0.16 mH
Mechanical Q Factor 3.04
Electrical Q Factor 0.74
Total Q Factor 0.6
Ratio 94.32 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)75.68
Suspension Compliance 646.8 μm/N
Effective Cone Diameter 13.3 cm
Motor Efficiency Factor 5.9 (T•m2)/Ω
Voice Coil Former Material ASV
Transducer Mass 0.7 Kg
Equivalent Volume 17.53 L

This 6.5 inch 4 ohm woofer member of the BC product family features a coated paper cone, rubber surround, and powerful voice coil suspended in a ferrite motor. It allows high excursion and features a rigid plastic basket. It is designed to be a high performance transducer.