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22mm TW022WA05 Ferrite Magnet Dome 4 Ohm

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    Purchase 22mm TW022WA05 Ferrite Magnet Dome 4 Ohm

    SKU: Wavecor-Tweeter-TW022WA05-01 22mm TW022WA05 Ferrite Magnet Dome 4 Ohm

    $65.00 each
    Brand: Wavecor
    Quantity in Basket:  None



    Wavecor Speaker Driver - TW022WA05 - 22mm Textile Tweeter Low Resonance - 4 Ohm

    TW022WA05 is a tweeter designed for applications requiring the highest level of performance and most extended and linear high frequency response. Tweeters used to feature a separate rear chamber in order to obtain low resonance frequency. Not any longer. By designing the internal parts to accommodate new larger internal volumes, the TW022WA05 offers an unusually low resonance frequency. The design with 22 mm voice coil and wide surround caters for both applications that would normally require traditional ¾" tweeters and those, where 1" tweeters would usually be used.



    • 22 mm design for optimal compromise between on- and off-axis frequency response, resonance frequency, and power handling
    • Internal volumes for low resonance frequency and distortion
    • Precision-coated textile diaphragm for improved consistency and high-frequency extension
    • Optimized dome shape for ultra high frequency cutoff
    • Vented voice coil former for reduced distortion and compression
    • Copper-clad aluminium voice coil wire offering lower moving mass for improved efficiency and transient response
    • Build-in cavities under dome/edge to equalise pressure for lower distortion and lower resonance frequency
    • Flexible lead wires for higher power handling and larger excursion
    • Gold plated terminals to prevent oxidation and ensure long-term reliable connection
    • Delivered with foam gasket attached for hassle-free mounting and secure cabinet sealing


    Frequency SPL and Impedance Response Graphs

    Loudspeaker Frequency Response Graph
    Loudspeaker Frequency Response Graph
    Measuring conditions, SPL
    Driver mounting: Flush in infinite baffle
    Microphone distance: 1.0 m
    Input level: 2.83 VRMS
    Smoothing: 1/6 oct.


    Loudspeaker Impedance Response Graph
    Loudspeaker Impedance Response Graph
    Measuring conditions, impedance
    Driver mounting: Free air, no baffle
    Input signal: Stepped sine wave, semi-current-drive, nominal current 2 mA
    Smoothing: None


    Technical Specifications

    Notes Parameter Value Unit
      Nominal size 22 mm
      Nominal impedance 4 Ohm
      Recommended frequency range
    2.5-25 kHz
    1, 4 Sensitivity, 2.83V/1m (average SPL in range 2.5 - 20 kHz) 91.5 dB
    2 Power handling, short term, IEC 268-5, 2 kHz @ 12dB/oct.   W
    2 Power handling, long term, IEC 268-5, 2 kHz @ 12dB/oct. 80 W
    2 Power handling, continuous, IEC 268-5, 2 kHz @ 12dB/oct. 25 W
      Effective radiating area, Sd 6.1 cm2
    3, 4, 6 Resonance frequency (free air, no baffle), Fs 750 kHz
      Moving mass, incl. air (free air, no baffle), Mms 0.28 g
    3 Force factor, Bxl 1.9 -
    3, 4, 6 Suspension compliance, Cms 0.16 mm/N
    3, 4, 6 Equivalent air volume, Vas 0.0085 ml
    3, 4, 6 Mechanical resistance, Rms 0.25 Ns/m
    3, 4, 6 Mechanical Q, Qms 5.3 -
    3, 4, 6 Electrical Q, Qes 1.36 -
    3, 4, 6 Total Q, Qts 1.08 -
    4 Voice coil resistance, RDC 3.7 Ohm
    5 Voice coil inductance, Le (measured at 20 kHz) 36 uH
      Voice coil inside diameter 22 mm
      Voice coil winding height 1.8 mm
      Air gap height 2.5 mm
      Theoretical linear motor stroke, Xmax ±0.35 mm
      Magnet weight 139 g
      Total unit net weight excl. packaging 0.34 kg
    3, 4, 5 Krm 0.0046 mOhm
    3, 4, 5 Erm 1.07 -
    3, 4, 5 Kxm 1.10 mH
    3, 4, 5 Exm 0.67 -
    Note 1 Measured in infinite baffle.
    Note 2 Tested in free air (no cabinet).
    Note 3 Measured using a semi-constant current source, nominal level 2 mA.
    Note 4 Measured at 25 deg. C
    Note 5 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.
    Note 6 Measured before burn in


    Driver Nominal Dimensions

    Loudspeaker Driver Dimensions and Measurements - all dimensions in mm (approx.)
    Loudspeaker Driver Dimensions and Measurements - all dimensions in mm (approx.)


    Terminal Nominal Dimensions

    Loudspeaker Driver Terminal Dimensions and Measurements - all dimensions in mm (approx.)
    Loudspeaker Driver Terminal Dimensions and Measurements - all dimensions in mm (approx.)
    Thickness, both terminals: 0.5 mm
    Terminal plating: Gold