Wavecor WF182BD15 Kevlar Carbon cone 17 cm 4 ohm midwoofer

The 7” transducers WF182BD13 (round, 4 ohm), WF182BD14 (truncated, 4 ohm), WF182BD15 (round, 8 ohm), and WF182BD16 (truncated, 8 ohm) were designed as high performance bass and midrange units for compact monitors and high-end hi-fi speakers.

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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

• Vented voice coil former for reduced distortion and compression

• 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

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Notes   Parameter WF182BD13/15 WF182BD14/16 Unit Before burn-in After burn-in Before burn-in After burn-in   Nominal size 7 7 [inch.]   Nominal impedance 4 8 [ohm]   Recommended max. upper frequency limit 2.5 2.5 [kHz] 1, 4 Sensitivity, 2.83V/1m (average SPL in range 300 - 1,000 Hz) 91 88 [dB] 2, 4 Power handling, short term, IEC 268-5, no additional filtering 350 350 [W] 2, 4 Power handling, long term, IEC 268-5, no additional filtering 250 250 [W] 2, 4 Power handling, continuous, IEC 268-5, no additional filtering 80 80 [W]   Effective radiating area, Sd 117 117 [sq.cm] 3, 4, 6 Resonance frequency (free air, no baffle), Fs 38 36 39 37 [Hz]   Moving mass, incl. air (free air, no baffle), Mms 16 15.5 [g] 3, 4 Force factor, Bxl 6.9 8.5 [N/A] 3, 4, 6 Suspension compliance, Cms 1.07 1.18 1.07 1.18 [mm/N] 3, 4, 6 Equivalent air volume, Vas 20.8 23 20.8 23 [lit.] 3, 4, 6 Mechanical resistance, Rms 0.35 0.35 0.35 0.35 [Ns/m] 3, 4, 6 Mechanical Q, Qms 10.9 10.5 10.7 10.3 [-] 3, 4, 6 Electrical Q, Qes 0.27 0.26 0.33 0.31 [-] 3, 4, 6 Total Q, Qts 0.26 0.25 0.32 0.30 [-] 4 Voice coil resistance, RDC 3.3 6.3 [ohm] 5 Voice coil inductance, Le (measured at 10 kHz)     [mH]   Voice coil inside diameter 32 32 [mm]   Voice coil winding height 16 16 [mm]   Air gap height 5 5 [mm]   Theoretical linear motor stroke, Xmax +/-5.5 +/-5.5 [mm]   Magnet weight 880 880 [g]   Total unit net weight excl. packaging 2.4 2.4 [kg] 3, 4, 5 Krm     [mohm] 3, 4, 5 Erm     [-] 3, 4, 5 Kxm     [mH] 3, 4, 5 Exm     [-]

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