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SW310WA01     12 alu-cone subwoofer, 8 ohm

SW310WA01 is a woofer designed for dedicated subwoofer applications. It works 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 makes 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 SW310WA01 masters equally well low level details and extreme dynamic requirements.

FEATURES

SW310WA01  12 subwoofer
  • Extremely rigid aluminium cone to ensure piston motion at high levels and for better heat transfer at high continuous power levels
  • Die cast alu chassis with optimal ventilation and increased stroke
  • Vented cone neck for reduced distortion and compression
  • Vented chassis for lower air flow speed reducing audible 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 145mm magnet for better control and efficiency
  • Black-anodized magnet structure steel parts for increased heat dissipation and power handling
  • Two built-in alu field stabilizing rings for reduced high-level distortion (see drawing)
  • 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

IMPEDANCE RESPONSE

SW310WA01-impedance-response

Measuring conditions, impedance
Driver mounting: Free air, no baffle, back side open (no cabinet)
Input signal: Stepped sine wave, semi-current-drive, nominal current 2 mA
Smoothing: None

NOMINAL SPECIFICATIONS

Notes

  Parameter

Before burn-in

After burn-in

Unit

 

Nominal size

12

[inch.]

 

Nominal impedance

8

[ohm]

 

Recommended max. upper frequency limit

300

[Hz]

1, 3

Sensitivity, 2.83V/1m (calculated from T/S parameters)

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

[W]

 

Effective radiating area, Sd

513

[sq.cm]

3, 6

Resonance frequency (free air, no baffle), Fs

28.5

 

[Hz]

 

Moving mass, incl. air (free air, no baffle), Mms

180

[g]

3

Force factor, Bxl

18.1

[N/A]

3, 6

Suspension compliance, Cms

0.173

 

[mm/N]

3, 6

Equivalent air volume, Vas

65

 

[lit.]

3, 6

Mechanical Q, Qms

11.5

 

[-]

3, 6

Electrical Q, Qes

0.62

 

[-]

3, 6

Total Q, Qts

0.59

 

[-]

4

Voice coil resistance, RDC

6.3

[ohm]

5

Voice coil inductance, Le (measured at 1 kHz)

2.5

[mH]

 

Voice coil inside diameter

51

[mm]

 

Voice coil winding height

31

[mm]

 

Air gap height

8

[mm]

 

Magnet weight

2.7

[kg]

 

Total unit net weight excl. packaging

6.5

[kg]

3, 5

Krm

12.8

[mohm]

3, 5

Erm

0.72

[-]

3, 5

Kxm

18.7

[mH]

3, 5

Exm

0.74

[-]

Note 1

Measured in infinite baffle.

Note 2

Tested in free air (no cabinet).

Note 3

Measured using a semi-constant current source, nominal level 2 mA.

Note 4

Measured at 20 deg. C

Note 5



 

It is generally a rough simplification to assume that loudspeaker transducer voice coils exhibit the characteristics of an inductor. Instead it is a far more accurate approach to use the more advanced model often referred to as the “Wright empirical model”, also used in LEAP-4 as the TSL model (www.linearx.com), involving parameters Krm, Erm, Kxm, and Exm. This more accurate transducer model is described in a technical paper (PDF) here.

Note 6

 

After burn-in specifications are measured 12 hours after exiting the transducer by a 20 Hz sine wave for 2 hours at level 20 VRMS. The unit is not burned in before shipping.
 

OUTLINE DRAWING AND NOMINAL DIMENSIONS (mm)

SW310WA01 outline drawing
SW310WA01-outline-drawing

PACKAGING INFORMATION

Part no. SW310WA01-01

Individual packaging (one piece per box)

Latest update: Apr. 14, 2012

 

Specifications are subject to change without any further notice.
Copyright © 2006-2018 by Wavecor Ltd., Guangzhou, China. All rights reserved.

 

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MORE INFO

SW310WA01 specificationsPDF data sheet
(904KB)

pdf_iconDrawing of motor structure (43KB)

12” passive radiator

Sealed box simulations SW310WA01Sealed box simulations
(340 KB)

 

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