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SW215WA01     8 paper cone subwoofer, 4 ohm

 

 

 

 

Wavecor Balanced Drive Technology

8” High Performance Steel Frame Subwoofer Unit.
Suitable for dedicated subwoofer applications  and as low frequency transducer in 2-, 3- and multi-way speaker systems.

Frequency resp.
Specifications
Dimensions
Ordering info

FEATURES

SW215WA01_subwoofer
  • 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 air-dried paper cone 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
  • Vented center pole with dual flares for reduced noise level at large cone excursions
  • Heavy-duty fiber glass voice coil former to reduce mechanical losses resulting in better dynamic performance and low-level details
  • Large motor structure 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 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

FREQUENCY RESPONSE

SW215WA01-FR

Measuring conditions, SPL
Driver mounting: Flush in infinite
     baffle, back side open (no cabinet)
Microphone distance: 1.0 m
Input signal: 2.83 VRMS stepped sine wave
Smoothing: 1/6 oct.

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

SW215WA01-IMP

NOMINAL SPECIFICATIONS

Notes

  Parameter

Before
burn-in

After
burn-in

Unit

 

Nominal size

8

[inch.]

 

Nominal impedance

4

[ohm]

 

Recommended max. upper frequency limit

500

[Hz]

1, 3

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

89

[dB]

2

Power handling, short term, IEC 268-5, no additional filtering

1,500

[W]

2

Power handling, long term, IEC 268-5, no additional filtering

400

[W]

2

Power handling, continuous, IEC 268-5, no additional filtering

150

[W]

 

Effective radiating area, Sd

206

[sq.cm]

3, 6

Resonance frequency (free air, no baffle), Fs

32

 

[Hz]

 

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

53

[g]

3

Force factor, Bxl

8.4

[N/A]

3, 6

Suspension compliance, Cms

0.46

 

[mm/N]

3, 6

Equivalent air volume, Vas

27.7

 

[lit.]

3, 6

Mechanical resistance, Rms

0.89

 

[Ns/m]

3, 6

Mechanical Q, Qms

12

 

[-]

3, 6

Electrical Q, Qes

0.49

 

[-]

3, 6

Total Q, Qts

0.47

 

[-]

4

Voice coil resistance, RDC

3.2

[ohm]

5

Voice coil inductance, Le (measured at 1 kHz)

1.2

[mH]

 

Voice coil inside diameter

39

[mm]

 

Voice coil winding height

25

[mm]

 

Air gap height

5

[mm]

 

Theoretical linear motor stroke, Xmax

10

[mm]

 

Magnet weight

 

[g]

 

Total unit net weight excl. packaging

2.4

[kg]

3, 5

Krm

7.0

[mohm]

3, 5

Erm

0.68

[-]

3, 5

Kxm

6.9

[mH]

3, 5

Exm

0.78

[-]

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 10 VRMS. The unit is not burned in before shipping.
 

OUTLINE DRAWING AND NOMINAL DIMENSIONS

SW215WA01 outline drawing PDF
SW215WA01-outline-drawing

TERMINAL NOMINAL DIMENSIONS (mm)

Terminals-dimensions

PACKAGING AND ORDERING INFORMATION

Part no. SW215WA01-01

4 ohm version, individual packaging (one piece per box)

Latest update: Dec. 25, 2015
 

 

Specifications are subject to change without any further notice.
Copyright © 2006-2015 by Wavecor Ltd., Guangzhou, China. All rights reserved.

 

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MORE INFO

PDF data sheet
(1.39 MB)

 

Balanced Drive technical paperBalanced Drive technical paper
(2.34 MB)

 

 

 

 

 

 

SW215WA01 cabinet simulationsCabinet simulations
(267 KB)

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