WF120BD10 Glass Fiber 11CM BASS MIDRANGE 8 OHM

    WF120BD10 Glass Fiber 11CM BASS MIDRANGE 8 OHM

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    €148.00
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    WF120BD10 Glass Fiber 11CM BASS MIDRANGE 8 OHM

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    The 4¾” transducers WF120BD05/WF120BD09 (4 ohm) and WF120BD06/WF120BD10 (8 ohm) were designed as high performance bass and midrange units for very compact monitors and high-end hi-fi speakers.
    The only difference between WF120BD05 and WF120BD09 is the shape of the mounting flange of the frames. WF120BD06 and WF120BD10 differ in the same way.

    • Balanced Drive motor structure for optimal drive force symmetry resulting in largely reduced even order harmonic distortion
    • Copper cap on center pole to reduce voice coil inductance and to minimize variations in voice coil inductance as a function of voice coil position
    • Cone made of a new paper/glass fiber mix with improved consistency and stability
    • Rigid die cast alu chassis with extensive venting for lower air flow speed reducing audible distortion
    • Vented voice coil former for reduced distortion and compression
    • Vented center pole with dual flares for reduced noise level at large cone excursions
    • Heavy-duty black fiber glass voice coil former to reduce mechanical losses resulting in better dynamic performance and low-level details
    • Large motor with 1¼” voice coil diameter for better control and power handling
    • Built-in alu field-stabilizing ring for reduced distortion at high levels
    • Low-loss suspension (high Qm) for better reproduction of details and dynamics
    • Black motor parts for better heat transfer to the surrounding air
    • Conex spider for better durability under extreme conditions
    • Gold plated terminals to ensure long-term trouble free connection
    • Notes

        Parameter

      WF120BD05 / WF120BD09

      WF120BD06 / WF120BD10

      Unit

      Before burn-in

      After burn-in

      Before burn-in

      After burn-in

       

      Nominal size

      [inch.]

       

      Nominal impedance

      4

      8

      [ohm]

       

      Recommended max. upper frequency limit

      3.5

      3.5

      [kHz]

      1, 4

      Sensitivity, 2.83V/1m (average SPL in range 300 - 1,000 Hz)

      87

      84

      [dB]

      2, 4

      Power handling, short term, IEC 268-5, no additional filtering

      150

      150

      [W]

      2, 4

      Power handling, long term, IEC 268-5, no additional filtering

       

       

      [W]

      2, 4

      Power handling, continuous, IEC 268-5, no additional filtering

      60

      60

      [W]

       

      Effective radiating area, Sd

      54

      54

      [sq.cm]

      3, 4, 6

      Resonance frequency (free air, no baffle), Fs

      52

      48

      54

      50

      [Hz]

       

      Moving mass, incl. air (free air, no baffle), Mms

      7.3

      6.7

      [g]

      3

      Force factor, Bxl

      4.1

      5.2

      [N/A]

      3, 4, 6

      Suspension compliance, Cms

      1.29

      1.50

      1.29

      1.50

      [mm/N]

      3, 4, 6

      Equivalent air volume, Vas

      5.3

      6.2

      5.3

      6.2

      [lit.]

      3, 4, 6

      Mechanical resistance, Rms

      0.30

      0.30

      0.30

      0.30

      [Ns/m]

      3, 4, 6

      Mechanical Q, Qms

      7.9

      7.4

      7.6

      7.0

      [-]

      3, 4, 6

      Electrical Q, Qes

      0.45

      0.42

      0.54

      0.50

      [-]

      3, 4, 6

      Total Q, Qts

      0.43

      0.40

      0.50

      0.47

      [-]

      4

      Voice coil resistance, RDC

      3.2

      6.4

      [ohm]

      5

      Voice coil inductance, Le (measured at 10 kHz)

      0.087

      0.16

      [mH]

       

      Voice coil inside diameter

      32

      32

      [mm]

       

      Voice coil winding height

      12

      12

      [mm]

       

      Air gap height

      4

      4

      [mm]

       

      Theoretical linear motor stroke, Xmax

      ±4

      ±4

      [mm]

       

      Magnet weight

      370

      370

      [g]

       

      Total unit net weight excl. packaging

      1.05

      1.05

      [kg]

      3, 4, 5

      Krm

      40

      109

      [mohm]

      3, 4, 5

      Erm

      0.39

      0.35

      [-]

      3, 4, 5

      Kxm

      61

      145

      [mH]

      3, 4, 5

      Exm

      0.32

      0.27

      [-]

      WF120BD06_10-SPL-&-IMP-respWF120BD09_10-outline-drawingTerminals-dimensions
    WF120BD10
    2 Items

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