Transducer Size (Millimeters)50.8
DC Resistance3.66
Resonant Frequency166.01
Half Space Sensitivity85.67
Rated Noise Power25
Test Spectrum Bandwidth150Hz - 18kHz

Transducer Size (Millimeters) 50.8
DC Resistance 3.66 Ω±5.0%
Resonant Frequency 166.01 Hz15%
Half Space Sensitivity @ 2.83V85.67 dB±1.01
Sensitivity @ 1W/1m82.7 dB±1.01
Rated Noise Power (IEC 268-5 18.1)25 W
Test Spectrum Bandwidth 150Hz - 18kHz 12 dB/Oc
Effective Piston Area 14.7 cm2
Moving Mass 1.6 g
Motor Force Factor 2.85 T•m
Voice Coil Inner Diameter 25.73 mm
Gap Height 3 mm
Maximum Linear Excursion 1.7 mm
Ferrofluid Type N/A
Minimum Impedance 4 Ω±7.5%
Voice Coil Inductance 0.04 mH
Mechanical Q Factor 5.01
Electrical Q Factor 0.74
Total Q Factor 0.65
Ratio 256.98 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 583.7 μm/N
Effective Cone Diameter 4.33 cm
Motor Efficiency Factor 2.2 (T•m2)/Ω
Voice Coil Former Material TiSV
Transducer Mass 0.14 Kg
Equivalent Volume 0.18 L

This 2 inch 4 ohm member of the NE family has leading-edge transducer technology packaged in a cutting edge, stylistic design. The full-range drivers in this family feature an innovative cast aluminium basket design which minimizes acoustic reflections inside the driver, through large basket windows and sculpted basket spokes. The basket also is designed to act as a highly coupled heat sink to the Neodymium-Iron-Boron magnet (NdFeB) motor, so as to improve power handling capacity. The cone is aluminium, with a butyl rubber surround designed through finite element analysis for linearity of performance. The voice coil bobbin is titanium, for improved performance. The FEA-designed motor features copper caps to minimize inductance and extend performance to high frequencies.