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Thumbnail Filmstrip of Wavcor Speaker Driver WF146WA01 - 4 Ohm 6in. Paper Cone Mid-Woofer Images
Wavecor Speaker Driver - WF146WA01 - 4 Ohm 6" Paper Cone Mid-Woofer
Description
Nominal impedance is 4 ohm for WF146WA01 and 8 ohm for WF146WA02. Otherwise the two models are identical. WF146WA01/02 are mid/woofers designed for demanding bass and midrange applications.
They work equally well for high-end hi-fi, high quality home theater systems, and top multimedia setups. Powering is by a large 90 mm magnet structure that ensures good efficiency and optimal T/S parameters.
A large 32 mm voice coil ensures high power handling - thermally and mechanically The optimized paper cone ensures large bandwidth and low distortion.
Distortion is further reduced by efficient venting and an alu shorting ring stabilizing the magnetic field in the air gap. WF146WA01/02 are very good choices for compact 2-way speaker systems or even as midrange in multi-way systems.
Features
- Alu field-stabilizing ring inside magnet assembly for reduced high-level distortion
- Vented voice coil former for reduced distortion and compression
- New vented chassis for lower air flow speed reducing audible distortion
- Heavy-duty black fiber glass voice coil bobbin to increase power handling and reduce mechanical losses resulting in better dynamic performance and low-level details
- Large motor system with 1¼” voice coil diameter and 90 mm magnet for better control, power handling, and efficiency
- Black magnet parts for better heat transfer to increase power handling
- New progressive suspension with specially designed
- Conex damper (spider) for long durability under extreme operating conditions
- Gold plated terminals to prevent oxidation, for long-term reliable connection
Frequency SPL and Impedance Response Graphs
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
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 | |
Befrore |
After Burn-in |
|||
| Nominal size | 5¾ | inch | ||
| Nominal impedance | 4 | Ohm | ||
| Recommended max. upper frequency limit |
3.5 | kHz | ||
| 1, 3 | Sensitivity, 2.83V/1m (average SPL in range 200 - 1,000 kHz) | 90 | dB | |
| 2 | Power handling, short term, IEC 268-5, no additional filtering | W | ||
| 2 | Power handling, long term, IEC 268-5, no additional filtering | W | ||
| 2 | Power handling, continuous, IEC 268-5, no additional filtering. | 55 | W | |
| Effective radiating area, Sd | 95 | cm2 | ||
| 3, 6 | Resonance frequency (free air, no baffle), Fs | 56 | Hz | |
| Moving mass, incl. air (free air, no baffle), Mms | 10.4 | g | ||
| 3 | Force factor, Bxl | 5.1 | - | |
| 3, 6 | Suspension compliance, Cms | 0.78 | mm/N | |
| 3, 6 | Equivalent air volume, Vas | 10.0 | lit. | |
| 3, 6 | Mechanical Q, Qms | 7.0 | - | |
| 3, 6 | Electrical Q, Qes | 0.45 | - | |
| 3, 6 | Total Q, Qts | 0.42 | - | |
| 4 | Voice coil resistance, RDC | 3.2 | Ohm | |
| 5 | Voice coil inductance, Le (measured at 10 kHz) | 0.24 | mH | |
| Voice coil inside diameter | 32 | mm | ||
| Voice coil winding height | 11 | mm | ||
| Air gap height | 5 | mm | ||
| Magnet weight | 400 | g | ||
| Total unit net weight excl. packaging | 1.03 | kg | ||
| 3, 5 | Krm | 0.19 | mOhm | |
| 3, 5 | Erm | 0.96 | - | |
| 3, 5 | Kxm | 4.9 | mH | |
| 3, 5 | Exm | 0.69 | - | |
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 20 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 After burn-in specifications are measured 12 hours after exiting the transducer by a 20 Hz sine wave for 2 hours at level 10/14.1 VRMS (4/8 ohm version). The unit is not burned in before shipping.
Driver Nominal Dimensions
Loudspeaker Driver Dimensions and Measurements - all dimensions in mm (approx.)
Terminal Nominal Dimensions
Loudspeaker Driver Terminal Dimensions and Measurements - all dimensions in mm (approx.)
Thickness, both terminals: 0.5 mm
Terminal plating: Gold