Transducer Size (Millimeters)101.6
DC Resistance6.27
Resonant Frequency61.03
Half Space Sensitivity87.23
Rated Noise Power45
Test Spectrum Bandwidth60Hz - 8kHz

Transducer Size (Millimeters) 101.6
DC Resistance 6.27 Ω±5.0%
Resonant Frequency 61.03 Hz15%
Half Space Sensitivity @ 2.83V87.23 dB±1.01
Sensitivity @ 1W/1m86.8 dB±1.01
Rated Noise Power (IEC 268-5 18.1)45 W
Test Spectrum Bandwidth 60Hz - 8kHz 12 dB/Oc
Effective Piston Area 54.1 cm2
Moving Mass 4.7 g
Motor Force Factor 5.53 T•m
Voice Coil Inner Diameter 32.41 mm
Gap Height 4 mm
Maximum Linear Excursion 14.2 mm
Ferrofluid Type
Minimum Impedance 7.26 Ω±7.5%
Voice Coil Inductance 0.06 mH
Mechanical Q Factor 4.98
Electrical Q Factor 0.37
Total Q Factor 0.35
Ratio 175.89 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 1433.2 μm/N
Effective Cone Diameter 8.3 cm
Motor Efficiency Factor 4.9 (T•m2)/Ω
Voice Coil Former Material TiSV
Transducer Mass 0.41 Kg
Equivalent Volume 5.89 L

This 4 inch 8 ohm member of the NE family has leading-edge transducer technology packaged in a cutting edge, stylistic design. The woofers 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 and dust cap are constructed of natural wood fiber material with proprietary coating formulas and processes, so as to yield high clarity products. The cone designs also utilize pentacone technology for improved frequency response. 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. Rounding out the design is a 4-way terminal block connector, for ease of electrical connection.