Transducer Size (Millimeters)304.8
DC Resistance2.78
Resonant Frequency19.94
Half Space Sensitivity88.56
Rated Noise Power150
Test Spectrum Bandwidth25Hz - 1kHz

Transducer Size (Millimeters) 304.8
DC Resistance 2.78 Ω±5.0%
Resonant Frequency 19.94 Hz15%
Half Space Sensitivity @ 2.83V88.56 dB±1.01
Sensitivity @ 1W/1m85 dB±1.01
Rated Noise Power (IEC 268-5 18.1)150 W
Test Spectrum Bandwidth 25Hz - 1kHz 12 dB/Oc
Effective Piston Area 506.7 cm2
Moving Mass 113.9 g
Motor Force Factor 11.12 T•m
Voice Coil Inner Diameter 51.32 mm
Gap Height 8 mm
Maximum Linear Excursion 9 mm
Ferrofluid Type
Minimum Impedance 3.55 Ω±7.5%
Voice Coil Inductance 0.38 mH
Mechanical Q Factor 15.6
Electrical Q Factor 0.32
Total Q Factor 0.31
Ratio 63.51 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 559.2 μm/N
Effective Cone Diameter 25.4 cm
Motor Efficiency Factor 44.6 (T•m2)/Ω
Voice Coil Former Material TiSV
Transducer Mass 2.68 Kg
Equivalent Volume 201.66 L

This 12 inch 4 ohm member of the NE family has leading-edge transducer technology packaged in a cutting edge, stylistic design. The subwoofers 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 NdFeB motor, so as to improve power handling capacity. An additional heat sink is available to provide extra thermal protection if needed. The cone and dust cap are constructed of natural wood fiber material with proprietary coating formulas & 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.