Transducer Size (Millimeters)165.1
DC Resistance3.27
Resonant Frequency38.7
Half Space Sensitivity89.85
Rated Noise Power80
Test Spectrum Bandwidth40Hz - 4kHz

Transducer Size (Millimeters)165.1
DC Resistance3.27 Ω±5.0%
Resonant Frequency38.7 Hz15%
Half Space Sensitivity @ 2.83V89.85 dB±1.01
Sensitivity @ 1W/1m86.7 dB±1.01
Rated Noise Power (IEC 268-5 18.1)80 W
Test Spectrum Bandwidth40Hz - 4kHz 12 dB/Oc
Effective Piston Area134.8 cm2
Moving Mass19.2 g
Motor Force Factor7.07 T•m
Voice Coil Inner Diameter38.44 mm
Gap Height6 mm
Maximum Linear Excursion5 mm
Ferrofluid Type
Minimum Impedance3.88 Ω±7.5%
Voice Coil Inductance0.08 mH
Mechanical Q Factor8.57
Electrical Q Factor0.3
Total Q Factor0.29
Ratio131.63 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance882.1 μm/N
Effective Cone Diameter13.1 cm
Motor Efficiency Factor15.3 (T•m2)/Ω
Voice Coil Former MaterialTiSV
Transducer Mass0.82 Kg
Equivalent Volume22.51 L

This 6.5 inch 4 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.