Transducer Size (Millimeters)101.6
DC Resistance7.57
Resonant Frequency86.75
Half Space Sensitivity85.02
Rated Noise Power20
Test Spectrum Bandwidth20Hz-12KHz

Transducer Size (Millimeters)101.6
DC Resistance7.57 Ω±5.0%
Resonant Frequency86.75 Hz15%
Half Space Sensitivity @ 2.83V85.02 dB±1.01
Sensitivity @ 1W/1m85.4 dB±1.01
Rated Noise Power (IEC 268-5 18.1)20 W
Test Spectrum Bandwidth20Hz-12KHz 12 dB/Oc
Effective Piston Area67.9 cm2
Moving Mass8.3 g
Motor Force Factor5.9 T•m
Voice Coil Inner Diameter32 mm
Gap Height4 mm
Maximum Linear Excursion0.7 mm
Ferrofluid Type
Minimum Impedance8.81 Ω±7.5%
Voice Coil Inductance0.04 mH
Mechanical Q Factor3.47
Electrical Q Factor0.99
Total Q Factor0.77
Ratio112.8 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance404.3 μm/N
Effective Cone Diameter9.3 cm
Motor Efficiency Factor4.6 (T•m2)/Ω
Voice Coil Former MaterialASV
Transducer Mass0.22 Kg
Equivalent Volume2.62 L

This 8ohm 4.5inch full range transducer is a member of the new BMR family. This driver features a powerful neodymium magnet , nestled within an innovative suspension system. The motor contains a copper cap to lower inductance and distortion. The flat cone is honeycomb paper material, with rubber surround, with plastic basket. Is designed to be a high performance full range driver. This family driver is used for shallow applications such as television soundbars and compact music system.