Vifa NE149-W-04

€125.55 *

Prices incl. VAT plus shipping costs

Delivery time appr. 1-3 workdays

  • 7235150
Vifa NE149W-04, this 5.25 inch 4 ohm member of the NE family has leading-edge transducer... more
Product information "Vifa NE149-W-04"

Vifa NE149W-04, this 5.25 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. 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.



Transducer Size     5.25 in
DC Resistance     3.39 Ω ±5.0%
Resonant Frequency     70.24 Hz 15%
Half Space Sensitivity @ 2.83V     89.16 dB ±1.01
Sensitivity @ 1W/1m     87.2 dB ±1.01
Rated Noise Power (IEC 268-5 18.1)     60 W
Test Spectrum Bandwidth (1300-20000 Hz)     50Hz - 5kHz 12 dB/Oct
Effective Piston Area     85 cm2
Moving Mass     11.4 g
Motor Force Factor     6.18 T•m
Voice Coil Inner Diameter     38.44 mm
Gap Height     6 mm
Maximum Linear Excursion     5 mm
Ferrofluid Type      
Minimum Impedance     5.07 Ω ±7.5%
Voice Coil Inductance     0.06 mH
Mechanical Q Factor     6.34
Electrical Q Factor     0.45
Total Q Factor     0.42
Ratio     168.85 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)      
Suspension Compliance     451.1 μm/N
Effective Cone Diameter     10.4 cm
Motor Efficiency Factor     11.3 (T•m2)/Ω
Voice Coil Former Material     ASV GSV
Transducer Mass     0.7 Kg
Equivalent Volume     4.57 L


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