Wavecor WF120BD03

€144.00 *

Prices incl. VAT plus shipping costs

Delivery time approx. 5 working days

  • wf120bd03
Wavecor WF120BD03 4¾" die cast, paper cone mid/woofer 4 Ohm   The 4¾” transducer... more
Product information "Wavecor WF120BD03"

Wavecor WF120BD03 4¾" die cast, paper cone mid/woofer 4 Ohm


The 4¾” transducer WF120BD03 (4 ohm) is designed as high performance bass and midrange unit for very compact monitors and high-end hi-fi speakers.


  • 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
  • Black coated semi-air-dried paper cone
  • 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



  • power handling (continuous/programme) = 50 W
  • frequency range = 60-4000 Hz
  • resonance frequency fs = 70 Hz
  • impedance R = 4 Ohm
  • sound pressure level SPL = 88,5 dB (2,83V; 1m)
  • DC resistance Re = 3,2 Ohm
  • force factor BL = 4,5 N/A
  • voice coil inductance L = 0,086 mH
  • effective piston radiating area Sd = 54 cm2
  • effective mechanical mass incl. air load mms = 6,55 g
  • equivalent volume of compliance Vas = 4,25 l
  • total Q factor Qts = 0,38 (Qms=6, Qes=0,4)
  • voice coil diameter = 26 mm
  • maximum peak linear excursion vibration xlin = +/- 4 mm
  • mounting diameter d = 100 mm
  • overall diameter d = 120 mm
  • mounting depth (not countersunk) t = 72 mm
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