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Vifa NE85W-04 2-1/2" Full Range Woofer

Brand:| Model: NE85W-04
Overview
Vifa's NE Series full-range drivers feature an innovative sculpted, open cast aluminum basket design that minimizes internal acoustic reflections and acts as the neodymium motor's heatsink.
Highlights
  • Cast aluminum frame acts as a heatsink
  • Sculpted design promotes cooling and reduces reflections
  • High-strength compact neodymium motor
  • Aluminum cone with half-roll rubber surround
  • Long-throw voice coil on titanium former
  • Copper pole piece cap for extended HF response
  • 4 ohm nominal impedance
Part # 
264-1052
Weight: 0.5 lbs.  
IN STOCK
List Price$52.99
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Part # 264-1052
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Product Details

Vifa NE85W-04 2-1/2" Full Range Woofer

Vifa's NE Series full-range drivers feature an innovative sculpted, open cast aluminum basket design that minimizes internal acoustic reflections and acts as the neodymium motor's heatsink. The cone is aluminum, with a butyl rubber surround designed by finite element analysis for linearity of performance. FEA techniques also contribute to the motor's copper cap, which reduces inductance and extends high frequency performance.



Product Specifications
  • Nominal Diameter2-1/2"
  • Power Handling (RMS)20 Watts
  • Power Handling (max)40 Watts
  • Impedance4 ohms
  • Frequency Response100 to 20,000 Hz
  • Sensitivity82.7 dB 1W/1m
  • Voice Coil Diameter1"
Thiele-Small Parameters
  • Resonant Frequency (Fs)105 Hz
  • DC Resistance (Re)3.7 ohms
  • Voice Coil Inductance (Le)0.06 mH
  • Mechanical Q (Qms)8.5
  • Electromagnetic Q (Qes)0.69
  • Total Q (Qts)0.64
  • Compliance Equivalent Volume (Vas)0.03 ft.³
  • Mechanical Compliance of Suspension (Cms)1.07 mm/N
  • BL Product (BL)2.75 Tm
  • Diaphragm Mass Inc. Airload (Mms)2.16g
  • Maximum Linear Excursion (Xmax)1.75 mm
  • Surface Area of Cone (Sd)22.1 cm²
Materials of Construction
  • Cone MaterialAluminum
  • Surround MaterialRubber
  • Voice Coil FormerTitanium
  • Basket / Frame MaterialCast Aluminum
  • Magnet MaterialNeodymium
Mounting Information
  • Overall Outside Diameter3.35"
  • Baffle Cutout Diameter2.25"
  • Depth2.02"
  • # Mounting Holes3
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.05 ft.³
  • Sealed F3131 Hz
  • Vented Volume0.08 ft.³
  • Vented F368 Hz
Vifa NE85W-04 2-1/2" Full Range Woofer
  • BrandVifa
  • ModelNE85W-04
  • Part Number264-1052
  • UPC844632083877
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (2 Reviews)
  • Weight0.5 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Reviews

Vifa NE85W-04 2-1/2" Full Range Woofer
Vifa NE85W-04 2-1/2" Full Range Woofer is rated 3.5 out of 5 by 2.
Rated 3 out of 5 by from High/Low distortionJust tested this driver with SoundEasy and a new high dynamic range microphone I made following Linkwitz's recommendation. Distortion tested at at 2.83V and 8V RMS is moderately high (3-10%) below 200-1,200 Hz and remarkably low above 1,200 Hz (0.1-0.2%). So it would make a great upper midrange but not so good as a woofer. Did not test below 200Hz.
Date published: 2011-06-21
Rated 4 out of 5 by from Small, high quality...loud!Cast basket, quality construction.I initially purchased these as replacement dash speakers for my BMW X5, but they are too deep won't fit, so I installed these as replacements in my JVC bookshelf system, could have used the next size larger, but oh well...These little things have brought new life into my 12 yr old 25w x 2 system. Very clear, loud, and surprising amount of bass. Glad I got them.
Date published: 2010-02-18

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Vifa NE85W-04 2-1/2" Full Range Woofer

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