Wavecor FR070WA04 2¾” fullrange alu-cone 8 ohm

The 2¾” transducers FR070WA03 (4 ohm) and FR070WA04 (8 ohm) were designed especially for high quality multimedia and lifestyle speakers, where sound reproduction without compromises is required.

• True full-range design with on-axis output to beyond 25kHz
• 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 anodized alu cone for better heat transfer
• Optimized off-axis response
• Vented polymer chassis for lower air flow speed reducing audible distortion
• Vented voice coil former for reduced distortion and compression
• Heavy-duty black fiber glass voice coil bobbin to reduce mechanical losses resulting in better dynamic performance and low-level details
• Large motor with 22 mm voice coil diameter for better control and power handling
• 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	FR070WA03		FR070WA04		Unit
  		Before burn-in	After burn-in	Before burn-in	After burn-in
  	Nominal size	2¾		2¾		[inch.]
  	Nominal impedance	4		8		[ohm]
  	Recommended max. upper frequency limit	full range		full range		[kHz]
  1, 5	Sensitivity, 2.83V/1m (average SPL in range 200 - 10,000 Hz)	86		83		[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	10		10		[W]
  	Effective radiating area, Sd	21		21		[sq.cm]
  3, 5, 7	Resonance frequency (free air, no baffle), Fs	121	114	124	117	[Hz]
  	Moving mass, incl. air (free air, no baffle), Mms	2.0		1.9		[g]
  3	Force factor, Bxl	2.3		2.9		[N/A]
  3, 5, 7	Suspension compliance, Cms	0.87	0.97	0.87	0.97	[mm/N]
  3, 5, 7	Equivalent air volume, Vas	0.54	0.61	0.54	0.61	[lit.]
  3, 5, 7	Mechanical resistance, Rms	0.11	0.11	0.11	0.11	[Ns/m]
  3, 5, 7	Mechanical Q, Qms	13.8	13.1	13.4	12.7	[-]
  3, 5, 7	Electrical Q, Qes	0.99	0.94	1.13	1.07	[-]
  3, 5, 7	Total Q, Qts	0.92	0.87	1.04	0.98	[-]
  4	Voice coil resistance, RDC	3.45		6.4		[ohm]
  6	Voice coil inductance, Le(measured at 10 kHz)	71		110		[μH]
  	Voice coil inside diameter	22		22		[mm]
  	Voice coil winding height	7		7		[mm]
  	Air gap height	3		3		[mm]
  	Magnet weight	115		115		[g]
  	Total unit net weight excl. packaging	0.29		0.29		[kg]
  3, 6	Krm					[mohm]
  3, 6	Erm					[-]
  3, 6	Kxm					[mH]
  3, 6	Exm					[-]

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