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 mechanicallyThe 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
Recommended max. upper frequency limit
Sensitivity, 2.83V/1m (average SPL in range 200 - 1,000 Hz)
Power handling, short term, IEC 268-5, no additional filtering
Power handling, long term, IEC 268-5, no additional filtering
Power handling, continuous, IEC 268-5, no additional filtering
Effective radiating area, Sd
Resonance frequency (free air, no baffle), Fs
Moving mass, incl. air (free air, no baffle), Mms
Force factor, Bxl
Suspension compliance, Cms
Equivalent air volume, Vas
Mechanical Q, Qms
Electrical Q, Qes
Total Q, Qts
Voice coil resistance, RDC
Voice coil inductance, Le(measured at 10 kHz)
Voice coil inside diameter
Voice coil winding height
Air gap height
Total unit net weight excl. packaging
Measured in infinite baffle.
Tested in free air (no cabinet).
Measured using a semi-constant current source, nominal level 2 mA.
Measured at 20 deg. C
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.
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.
Download PDF data sheet