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- FEA optimized suspension for perfect symmetry, reducing even order harmonic distortion
- Balanced Drive motor with perfect force factor symmetry for reduced distortion
- Vented voice coil former for reduced distortion and compression
- Vented chassis for lower air flow speed reducing audible distortion
- Heavy-duty black fiber glass voice coil bobbin to increase power handling and reduce mechanical losses resulting in better dynamic performance and low-level details
- Progressive suspension with optimized compromise between linearity and soft clipping
- New damper (spider) woven of a mix of polymers and natural fibers for improved durability
- Gold plated terminals to prevent oxidation for long-term reliable connection
- Delivered with foam gasket attached to the frame for hassle-free mounting and secure enclosure sealing
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Notes
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Parameter
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WF168OM01
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WF168OM02
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Unit
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Before burn-in
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After burn-in
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Before burn-in
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After burn-in
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Nominal size
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6.5
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6.5
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[inch.]
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Nominal impedance
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4
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8
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[ohm]
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Recommended max. upper frequency limit
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3
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3
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[kHz]
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1, 3
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Sensitivity, 2.83V/1m (average 300-3,000Hz)
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88
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85.5
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[dB]
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2
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Power handling, short term, IEC 268-5, no additional filtering
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[W]
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2
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Power handling, long term, IEC 268-5, no additional filtering
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[W]
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2
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Power handling, continuous, IEC 268-5, no additional filtering
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55 (65)
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55 (65)
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[W]
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Effective radiating area, Sd
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131
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131
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[sq.cm]
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3, 6
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Resonance frequency (free air, no baffle), Fs
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39
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40
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[Hz]
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Moving mass, incl. air (free air, no baffle), Mms
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13.8
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12.9
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[g]
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3
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Force factor, Bxl
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4.8
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6.0
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[N/A]
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3, 6
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Suspension compliance, Cms
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1.21
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1.21
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[mm/N]
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3, 6
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Equivalent air volume, Vas
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29.5
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29.5
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[lit.]
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3, 6
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Mechanical resistance, Rms
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0.39
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0.39
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[Ns/m]
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3, 6
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Mechanical Q, Qms
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8.7
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8.4
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[-]
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3, 6
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Electrical Q, Qes
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0.47
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0.57
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[-]
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3, 6
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Total Q, Qts
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0.45
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0.54
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[-]
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4
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Voice coil resistance, RDC
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3.2
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6.3
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[ohm]
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5
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Voice coil inductance, Le (measured at 10 kHz)
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0.30
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0.48
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[mH]
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Voice coil inside diameter
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32
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32
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[mm]
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Voice coil winding height
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12.4
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12.4
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[mm]
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Air gap height
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4
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4
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[mm]
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Theoretical linear motor stroke, Xmax
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+/-4.2
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+/-4.2
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[mm]
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Magnet weight
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[g]
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Total unit net weight excl. packaging
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[kg]
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3, 5
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Krm
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0.60
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0.84
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[mohm]
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3, 5
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Erm
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0.88
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0.90
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[-]
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3, 5
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Kxm
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12.1
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18.4
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[mH]
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3, 5
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Exm
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0.63
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0.64
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[-]
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Note 1
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Measured in infinite baffle.
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Note 2
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Tested in free air (no cabinet).
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Note 3
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Measured using a semi-constant current source, nominal level 2 mA.
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Note 4
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Measured at 20 deg. C
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Note 5
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It is generally a rough simplification to assume that loudspeaker transducer voice coils exhibit the characteristics of an inductor. Instead it is a far more accurate approach to use the more advanced model often referred to as the “Wright empirical model”, also used in LEAP-4 as the TSL model (www.linearx.com), involving parameters Krm, Erm, Kxm, and Exm. This more accurate transducer model is described in a technical paper (PDF) here.
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Note 6
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After burn-in specifications are measured 12 hours after exiting the transducer by a 20 Hz sine wave for 2 hours at level 10/14.1 VRMS (4/8 ohm version). The unit is not burned in before shipping.
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OUTLINE DRAWING AND NOMINAL DIMENSIONS
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TERMINAL NOMINAL DIMENSIONS (mm)
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PACKAGING AND ORDERING INFORMATION
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Part no. WF168OM01-01
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4 ohm version, bulk packaging
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Part no. WF168OM02-01
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8 ohm version, bulk packaging
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Latest update: November 11, 2015
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Specifications are subject to change without any further notice.
Copyright © 2006-2023 by Wavecor Ltd., China. All rights reserved.
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MORE INFO
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