NE225W-04

Transducer Size (Millimeters)203.2
DC Resistance3.12
Resonant Frequency33.15
Half Space Sensitivity90.18
Rated Noise Power125
Test Spectrum Bandwidth30Hz - 1.5kHz

Transducer Size (Millimeters)203.2
DC Resistance3.12 Ω±5.0%
Resonant Frequency33.15 Hz15%
Half Space Sensitivity @ 2.83V90.18 dB±1.01
Sensitivity @ 1W/1m87.1 dB±1.01
Rated Noise Power (IEC 268-5 18.1)125 W
Test Spectrum Bandwidth30Hz - 1.5kHz 12 dB/Oc
Effective Piston Area227 cm2
Moving Mass37.2 g
Motor Force Factor8.36 T•m
Voice Coil Inner Diameter51.32 mm
Gap Height8 mm
Maximum Linear Excursion7.6 mm
Ferrofluid Type
Minimum Impedance3.9 Ω±7.5%
Voice Coil Inductance0.16 mH
Mechanical Q Factor9.8
Electrical Q Factor0.35
Total Q Factor0.33
Ratio99.25 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance619.5 μm/N
Effective Cone Diameter17 cm
Motor Efficiency Factor22.4 (T•m2)/Ω
Voice Coil Former MaterialTiSV
Transducer Mass1.86 Kg
Equivalent Volume44.82 L

This 8 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 Neodymium-Iron-Boron magnet (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.