Wavecor SW312WA03 bass driver aluminium 4 ohm

Wavecor SW312WA03  bass driver aluminium 4 ohm

SW312WA03 and SW312WA04 are woofers designed for dedicated sub bass applications. They work equally well for high-end hi-fi, high quality home theater systems, and top multimedia setups.
The extremely stiff aluminium cone, the long linear throw, exaggerated ventilation, and the special dynamic linearization short circuiting rings together make up for an unusually linear and low-distortion woofer. Even at very high signal levels, the unit behaves controlled and without distortion.
Due to low mechanical losses SW312WA03 and SW312WA04 master equally well low level details and extreme dynamic peaks.
Both models are available with black anodized alu cones as SW312WA05 (4 ohm) and SW312WA06 (8 ohm)

• Extremely rigid aluminium cone to ensure piston motion at high levels and for better heat transfer at high continuous power levels
• New reinforced die cast alu chassis with optimal ventilation and increased stroke
• Venting through holes in cone neck for reduced distortion and compression
• Vented chassis for lower air flow speed reducing audible distortion
• Two internally built-in alu rings for stabilizing the magnetic field leading to lower high-level distortion
• Heavy-duty black fiber glass voice coil bobbin to reduce mechanical losses resulting in better dynamic performance and low-level details
• Large motor system with 2” voice coil diameter and 145 mm magnet for better control and efficiency
• Black-anodized magnet structure steel parts for increased heat dissipation and power handling
• Long linear stroke motor for reduced distortion at high levels
• Linear suspension with specially designed CONEX damper (spider) for long durability under extreme operating conditions
• 4-layer voice coil for increased control and better small-cabinet performance

• Notes

  	Parameter	SW312WA03 SW312WA05		SW312WA04 SW312WA06		Unit
  		Before burn-in	After burn-in	Before burn-in	After burn-in
  	Nominal size	12¼		12¼		[inch.]
  	Nominal impedance	4		8		[ohm]
  	Recommended max. upper frequency limit	300		300		[Hz]
  1, 3	Sensitivity, 2.83V/1m (calculated from T/S parameters)	90		87		[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	250		250		[W]
  	Effective radiating area, Sd	488		488		[sq.cm]
  3, 6	Resonance frequency (free air, no baffle), Fs	28		29		[Hz]
  	Moving mass, incl. air (free air, no baffle), Mms	185		172		[g]
  3	Force factor, Bxl	14.5		18.4		[N/A]
  3, 6	Suspension compliance, Cms	0.18		0.18		[mm/N]
  3, 6	Equivalent air volume, Vas	61		61		[lit.]
  3, 6	Mechanical resistance, Rms	2.8		2.8		[Ns/m]
  3, 6	Mechanical Q, Qms	11.5		11.0		[-]
  3, 6	Electrical Q, Qes	0.50		0.60		[-]
  3, 6	Total Q, Qts	0.48		0.57		[-]
  4	Voice coil resistance, RDC	3.2		6.6		[ohm]
  5	Voice coil inductance, Le(measured at 1 kHz)	1.55		2.5		[mH]
  	Voice coil inside diameter	51		51		[mm]
  	Voice coil winding height	31		31		[mm]
  	Air gap height	8		8		[mm]
  	Theoretical linear motor stroke, Xmax	±11.5		±11.5		[mm]
  	Magnet weight	2.7		2.7		[g]
  	Total unit net weight excl. packaging	6.5		6.5		[kg]
  3, 5	Krm	10.4		12.8		[mohm]
  3, 5	Erm	0.70		0.72		[-]
  3, 5	Kxm	11.3		18.7		[mH]
  3, 5	Exm	0.75		0.74		[-]

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