Wavecor SW118WA01 10 cm subwoofer 4 ohm

4½” High Performance Steel Frame Subwoofer Units.
Suitable for dedicated subwoofer applications  and as low frequency transducers in 2½-, 3- and multi-way speaker systems.

• Balanced Drive motor structure for optimal drive force symmetry resulting in largely reduced even order harmonic distortion
• Large linear stroke, ensuring low distortion at high output levels
• Rigid paper cones to ensure piston motion even at high levels - for reduced distortion
• Rigid steel chassis’ with extensive venting for lower air flow speed reducing audible distortion
• Heavy-duty fiber glass voice coil former to reduce mechanical losses resulting in better dynamic performance and low-level details
• Large motor structures for better control and power handling
• Built-in alu field-stabilizing rings for reduced distortion at high levels
• Low-loss suspension (high Qm) for better reproduction of details and dynamics
• Black plated 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
• Delivered with foam gasket attached for hassle-free mounting and secure cabinet sealing

• Notes

  	Parameter	SW118WA01		SW118WA02		Unit
  		Before burn-in	After burn-in	Before burn-in	After burn-in
  	Nominal size	4½		4½		[inch.]
  	Nominal impedance	4		8		[ohm]
  	Recommended max. upper frequency limit	1,200		1,200		[Hz]
  1, 3	Sensitivity, 2.83V/1m (calculated from T/S parameters)	86		83.5		[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	40		40		[W]
  	Effective radiating area, Sd	49		49		[sq.cm]
  3, 6	Resonance frequency (free air, no baffle), Fs	58		60		[Hz]
  	Moving mass, incl. air (free air, no baffle), Mms	7.9		7.3		[g]
  3	Force factor, Bxl	4.7		5.9		[N/A]
  3, 6	Suspension compliance, Cms	0.97		0.97		[mm/N]
  3, 6	Equivalent air volume, Vas	3.3		3.3		[lit.]
  3, 6	Mechanical resistance, Rms	0.34		0.34		[Ns/m]
  3, 6	Mechanical Q, Qms	8.4		8.1		[-]
  3, 6	Electrical Q, Qes	0.41		0.50		[-]
  3, 6	Total Q, Qts	0.39		0.47		[-]
  4	Voice coil resistance, RDC	3.2		6.3		[ohm]
  5	Voice coil inductance, Le(measured at 1 kHz)	0.48		0.78		[mH]
  	Voice coil inside diameter	26		26		[mm]
  	Voice coil winding height	12		12		[mm]
  	Air gap height	4		4		[mm]
  	Theoretical linear motor stroke, Xmax	±4		±4		[mm]
  	Magnet weight					[g]
  	Total unit net weight excl. packaging	0.80		0.80		[kg]
  3, 5	Krm	0.17		0.27		[mohm]
  3, 5	Erm	0.97		0.96		[-]
  3, 5	Kxm	7.0		10.7		[mH]
  3, 5	Exm	0.66		0.65		[-]