Wavecor WF152BD03 6" paper mid woofer 4 ohm

The 6” transducers WF152BD03 (4 ohm) and WF152BD04 (8 ohm) were designed as high performance bass and midrange units for compact monitors and high-end hi-fi speakers.

• 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 coated semi-air-dried paper 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

• Notes

  	Parameter	WF152BD03		WF152BD04		Unit
  		Before burn-in	After burn-in	Before burn-in	After burn-in
  	Nominal size	6		6		[inch.]
  	Nominal impedance	4		8		[ohm]
  	Recommended max. upper frequency limit	3.5		3.5		[kHz]
  1	Sensitivity, 2.83V/1m (average SPL in range 300 - 1,000 Hz)	91		88.5		[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	70		70		[W]
  	Effective radiating area, Sd	93		93		[sq.cm]
  3, 6	Resonance frequency (free air, no baffle), Fs	55.5	50	56.5	51	[Hz]
  	Moving mass, incl. air (free air, no baffle), Mms	11.0		10.6		[g]
  3	Force factor, Bxl	5.8		7.3		[N/A]
  3, 6	Suspension compliance, Cms	0.75	0.93	0.75	0.93	[mm/N]
  3, 6	Equivalent air volume, Vas	9.2	11.4	9.2	11.4	[lit.]
  3, 6	Mechanical resistance, Rms	0.43	0.46	0.43	0.46	[Ns/m]
  3, 6	Mechanical Q, Qms	8.9	7.5	8.7	7.3	[-]
  3, 6	Electrical Q, Qes	0.36	0.33	0.44	0.40	[-]
  3, 6	Total Q, Qts	0.35	0.31	0.42	0.38	[-]
  4	Voice coil resistance, RDC	3.2		6.3		[ohm]
  5	Voice coil inductance, Le (measured at 10 kHz)	0.096		0.15		[mH]
  	Voice coil inside diameter	32		32		[mm]
  	Voice coil winding height	14		14		[mm]
  	Air gap height	5		5		[mm]
  	Magnet weight	630		630		[g]
  	Total unit net weight excl. packaging	1.46		1.46		[kg]
  3, 5	Krm	46		50		[mohm]
  3, 5	Erm	0.39		0.42		[-]
  3, 5	Kxm	260		580		[mH]
  3, 5	Exm	0.16		0.12		[-]

  
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