Wavecor WF120BD05 Glass Fiber 11cm midwoofer 4 ohm

Name: Wavecor WF120BD05 Glass Fiber 11cm midwoofer 4 ohm
Brand: WAVECOR
SKU: WF120BD05
Price: 148 EUR
Availability: InStock

Wavecor WF120BD05 Glass Fiber 11cm midwoofer 4 ohm

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€148.00

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The 4¾” transducers WF120BD05/WF120BD09 (4 ohm) and WF120BD06/WF120BD10 (8 ohm) were designed as high performance bass and midrange units for very compact monitors and high-end hi-fi speakers.
The only difference between WF120BD05 and WF120BD09 is the shape of the mounting flange of the frames. WF120BD06 and WF120BD10 differ in the same way.

- - 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
  - Cone made of a new paper/glass fiber mix with improved consistency and stability
  - 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	WF120BD05 / WF120BD09		WF120BD06 / WF120BD10		Unit
	Parameter	Before burn-in	After burn-in	Before burn-in	After burn-in	Unit
	Nominal size	4¾		4¾		[inch.]
	Nominal impedance	4		8		[ohm]
	Recommended max. upper frequency limit	3.5		3.5		[kHz]
1, 4	Sensitivity, 2.83V/1m (average SPL in range 300 - 1,000 Hz)	87		84		[dB]
2, 4	Power handling, short term, IEC 268-5, no additional filtering	150		150		[W]
2, 4	Power handling, long term, IEC 268-5, no additional filtering					[W]
2, 4	Power handling, continuous, IEC 268-5, no additional filtering	60		60		[W]
	Effective radiating area, Sd	54		54		[sq.cm]
3, 4, 6	Resonance frequency (free air, no baffle), Fs	52	48	54	50	[Hz]
	Moving mass, incl. air (free air, no baffle), Mms	7.3		6.7		[g]
3	Force factor, Bxl	4.1		5.2		[N/A]
3, 4, 6	Suspension compliance, Cms	1.29	1.50	1.29	1.50	[mm/N]
3, 4, 6	Equivalent air volume, Vas	5.3	6.2	5.3	6.2	[lit.]
3, 4, 6	Mechanical resistance, Rms	0.30	0.30	0.30	0.30	[Ns/m]
3, 4, 6	Mechanical Q, Qms	7.9	7.4	7.6	7.0	[-]
3, 4, 6	Electrical Q, Qes	0.45	0.42	0.54	0.50	[-]
3, 4, 6	Total Q, Qts	0.43	0.40	0.50	0.47	[-]
4	Voice coil resistance, RDC	3.2		6.4		[ohm]
5	Voice coil inductance, Le (measured at 10 kHz)	0.087		0.16		[mH]
	Voice coil inside diameter	32		32		[mm]
	Voice coil winding height	12		12		[mm]
	Air gap height	4		4		[mm]
	Theoretical linear motor stroke, Xmax	±4		±4		[mm]
	Magnet weight	370		370		[g]
	Total unit net weight excl. packaging	1.05		1.05		[kg]
3, 4, 5	Krm	40		109		[mohm]
3, 4, 5	Erm	0.39		0.35		[-]
3, 4, 5	Kxm	61		145		[mH]
3, 4, 5	Exm	0.32		0.27		[-]