Wavecor WF182BD13 7″ die cast, Kevlar/Carbon fibre cone mid/woofers 4Ohms
Overview:
The 7” transducers WF182BD13 (round, 4 ohm) was designed as high performance bass and midrange units for compact monitors and high-end hi-fi speakers.
Features:
- New cone of interwoven Kevlar/Carbon fibers, a new reference for the combination of low mass, rigidness, and damping – highly beneficial properties for midrange reproduction
- Balanced Drive motor structure for optimal drive force symmetry resulting in largely reduced even order harmonic distortion
- Vented, inverted center dome for reduced compression
- 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
- Rigid die cast alu chassis with extensive venting for lower air flow speed reducing audible distortion
- 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 Specifications:
Parameter | WF182BD13 | Unit | |
Before burn-in | After burn-in | ||
Nominal size | 7 | [inch.] | |
Nominal impedance | 4 | [ohm] | |
Recommended max. upper frequency limit | 2.5 | [kHz] | |
Sensitivity, 2.83V/1m (average SPL in range 200 – 1,000 Hz) | 91 | [dB] | |
Power handling, short term, IEC 268-5, no additional filtering | 350 | [W] | |
Power handling, long term, IEC 268-5, no additional filtering | 250 | [W] | |
Power handling, continuous, IEC 268-5, no additional filtering | 80 | [W] | |
Effective radiating area, Sd | 117 | [sq.cm] | |
Resonance frequency (free air, no baffle), Fs | 38 | 36 | [Hz] |
Moving mass, incl. air (free air, no baffle), Mms | 16 | [g] | |
Force factor, Bxl | 6.9 | [N/A] | |
Suspension compliance, Cms | 1.07 | 1.18 | [mm/N] |
Equivalent air volume, Vas | 20.8 | 23 | [lit.] |
Mechanical resistance, Rms | 0.35 | 0.35 | [Ns/m] |
Mechanical Q, Qms | 10.9 | 10.5 | [-] |
Electrical Q, Qes | 0.27 | 0.26 | [-] |
Total Q, Qts | 0.26 | 0.25 | [-] |
Voice coil resistance, RDC | 3.3 | [ohm] | |
Voice coil inductance, Le (measured at 1 kHz) | – | [mH] | |
Voice coil inside diameter | 32 | [mm] | |
Voice coil winding height | 16 | [mm] | |
Air gap height | 5 | [mm] | |
Magnet weight | 880 | [g] | |
Total unit net weight excl. packaging | 2.4 | [kg] |
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