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| Wavecor WF120BD01-01 (ea.) | |
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4¾", die cast alu, nomex cone, 85 mm ferrite, cu cap, 1¼" VC, 4 ohm
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 | Wavecor WF120BD01-01 (ea.) midbass driver's product information |  |
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The 4¾” transducers WF120BD01 (4 ohm) and WF120BD02 (8 ohm) were 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
- Black Nomex 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
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| Wavecor WF120BD01-01 (ea.) midbass driver's specifications | |
| Nominal size | 4¾ [inch.] |
| Nominal impedance | 4 [ohm] |
| Recommended max. upper frequency limit | 4 [kHz] |
| Sensitivity, 2.83V/1m (average SPL in range 300 - 1,000 Hz) | 85 [dB] |
| 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 | 46[Hz] |
| Moving mass, incl. air (free air, no baffle), Mms | 8.9 [g] |
| Force factor, Bxl | 5.1 |
| Suspension compliance, Cms | 1.45 [mm/N] |
| Equivalent air volume, Vas | 6.0 [lit.] |
| Mechanical Q, Qms | 6.7 |
| Electrical Q, Qes | 0.33 |
| Total Q, Qts | 0.31 |
| Voice coil resistance, RDC | 3.4[ohm] |
| Voice coil inductance, Le (measured at 10 kHz) | 0.12[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 | 1.0 [kg] |
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| Wavecor WF120BD01-01 (ea.) Midbass Driver additional photos | |
| More information about Wavecor WF120BD01-01 (ea.) Midbass | |
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