Wavecor SW270WA01 25 cm bass paper cone 4ohm

The 10½” transducer SW270WA01 was designed specifically for high performance  subwoofer applications where sound quality and low distortion are the priorities. It features the Wavecor Balanced Drive motor technology.

• Balanced Drive motor structure for optimal drive force symmetry resulting in largely reduced even order harmonic distortion
• Extremely large linear stroke, Xmax = ± 11 mm, ensuring low distortion at high output levels
• Very rigid air dried paper cone cone to ensure piston motion at high levels for reduced distortion
• Chassis with extensive venting for lower air flow speed reducing audible distortion
• 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 2” 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 platedd 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	Before burn-in	After burn-in	Unit
  	Nominal size	10½		[inch.]
  	Nominal impedance	4		[ohm]
  	Recommended max. upper frequency limit	400		[Hz]
  1, 3	Sensitivity, 2.83V/1m (calculated from T/S parameters)	88		[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	150		[W]
  	Effective radiating area, Sd	312		[sq.cm]
  3, 6	Resonance frequency (free air, no baffle), Fs	28		[Hz]
  	Moving mass, incl. air (free air, no baffle), Mms	88		[g]
  3	Force factor, Bxl	9.7		[N/A]
  3, 6	Suspension compliance, Cms	0.37		[mm/N]
  3, 6	Equivalent air volume, Vas	51		[lit.]
  3, 6	Mechanical resistance, Rms	1.9		[Ns/m]
  3, 6	Mechanical Q, Qms	8.1		[-]
  3, 6	Electrical Q, Qes	0.53		[-]
  3, 6	Total Q, Qts	0.49		[-]
  4	Voice coil resistance, RDC	3.2		[ohm]
  5	Voice coil inductance, Le (measured at 1 kHz)	1.4		[mH]
  	Voice coil inside diameter	51		[mm]
  	Voice coil winding height	28		[mm]
  	Air gap height	6		[mm]
  	Theoretical linear motor stroke, Xmax	±11		[mm]
  	Magnet weight			[g]
  	Total unit net weight excl. packaging	3.6		[kg]
  3, 5	Krm	17		[mohm]
  3, 5	Erm	0.61		[-]
  3, 5	Kxm	10.5		[mH]
  3, 5	Exm	0.75		[-]