Wavecor WF120BD06 4 3/4″ die cast, paper/glass fiber mid/woofers, 8Ohm
Overview:
The 4.75” transducers WF120BD06(8 ohm) was designed as high performance bass and midrange units for very compact monitors and high-end hi-fi speakers.
Features:
- 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 1.25” 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
Nominal Specification:
Parameter | WF120BD06 | Unit | |
Before burn-in | After burn-in | ||
Nominal size | 4.75 | [inch.] | |
Nominal impedance | 8 | [ohm] | |
Recommended max. upper frequency limit | 3.5 | [kHz] | |
Sensitivity, 2.83V/1m (average SPL in range 200 – 1,000 Hz) | 84 | [dB] | |
Power handling, short term, IEC 268-5, no additional filtering | 150 | [W] | |
Power handling, long term, IEC 268-5, no additional filtering | [W] | ||
Power handling, continuous, IEC 268-5, no additional filtering | 60 | [W] | |
Effective radiating area, Sd | 54 | [sq.cm] | |
Resonance frequency (free air, no baffle), Fs | 54 | 50 | [Hz] |
Moving mass, incl. air (free air, no baffle), Mms | 6.7 | [g] | |
Force factor, Bxl | 5.2 | [N/A] | |
Suspension compliance, Cms | 1.29 | 1.50 | [mm/N] |
Equivalent air volume, Vas | 5.3 | 6.2 | [lit.] |
Mechanical resistance, Rms | 0.30 | 0.30 | [Ns/m] |
Mechanical Q, Qms | 7.6 | 7.4 | [-] |
Electrical Q, Qes | 0.54 | 0.50 | [-] |
Total Q, Qts | 0.50 | 0.47 | [-] |
Voice coil resistance, RDC | 6.4 | [ohm] | |
Voice coil inductance, Le (measured at 10 kHz) | 0.16 | [mH] | |
Voice coil inside diameter | 32 | [mm] | |
Voice coil winding height | 12 | [mm] | |
Air gap height | 4 | [mm] | |
Magnet weight | 370 | [g] | |
Total unit net weight excl. packaging | 1.05 | [kg] | |
Krm | 109 | [mohm] | |
Erm | 0.35 | [-] | |
Kxm | 145 | [mH] | |
Exm | 0.27 | [-] |
Reviews
There are no reviews yet.