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WF090WA01/02     3 paper cone mid/woofer, 4/8 ohm

 

 

 

 

The  3" transducers WF090WA01 (4 ohm) and WF090WA02 (8 ohm) were designed especially for high quality multimedia and lifestyle speakers, where small size is required while still obtaining sound reproduction without compromises.

Frequency resp.
Specifications
Dimensions
Ordering info

FEATURES

WF090WA01 and WF090WA02
  • Vented voice coil former for reduced distortion and compression
  • Vented chassis for lower air flow speed reducing audible distortion
  • Voice coil wound with Copper Clad Aluminium Wire for higher efficiency and better dynamics
  • Heavy-duty black fiber glass voice coil bobbin to increase power handling and reduce mechanical losses resulting in better dynamic performance and low-level details
  • Low-loss suspension (high Qm) for better reproduction of details and dynamics
  • Black magnet parts for better heat transfer to increase power handling
  • Progressive suspension with specially designed CONEX damper (spider) for long durability under extreme operating conditions
  • Gold plated terminals to prevent oxidation for long-term reliable connection
  • Delivered with foam gasket attached for hassle-free mounting and secure cabinet sealing

FREQUENCY RESPONSE

WF090WA01-SPL-&-imp-respons

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

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

WF090WA02-SPL-&-imp-respons

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

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

NOMINAL SPECIFICATIONS

Notes

  Parameter

WF090WA01

WF090WA02

Unit

Before burn-in

After burn-in

Before burn-in

After burn-in

 

Nominal size

3

3

[inch.]

 

Nominal impedance

4

8

[ohm]

 

Recommended max. upper frequency limit

5

5

[kHz]

1, 5

Sensitivity, 2.83V/1m (average SPL in range 300 - 4,000 Hz)

86.5

84

[dB]

2

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

30

30

[W]

2

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

15

15

[W]

2

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

8

8

[W]

 

Effective radiating area, Sd

36

36

[sq.cm]

3, 5, 7

Resonance frequency (free air, no baffle), Fs

115

109

117

110

[Hz]

 

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

3.45

3.35

[g]

3

Force factor, Bxl

2.9

3.5

[N/A]

3, 5, 7

Suspension compliance, Cms

0.55

0.62

0.55

0.62

[mm/N]

3, 5, 7

Equivalent air volume, Vas

1.02

1.14

1.02

1.14

[lit.]

3, 5, 7

Mechanical resistance, Rms

0.39

0.39

0.39

0.39

[Ns/m]

3, 5, 7

Mechanical Q, Qms

6.4

6.1

6.3

6.0

[-]

3, 5, 7

Electrical Q, Qes

0.92

0.87

1.11

1.04

[-]

3, 5, 7

Total Q, Qts

0.81

0.76

0.94

0.89

[-]

4

Voice coil resistance, RDC

3.1

5.5

[ohm]

6

Voice coil inductance, Le (measured at 10 kHz)

0.14

0.22

[mH]

 

Voice coil inside diameter

22

22

[mm]

 

Voice coil winding height

8.5

8.5

[mm]

 

Air gap height

3

3

[mm]

 

Theoretical linear motor stroke, Xmax

2.75

2.75

[mm]

 

Magnet weight

135

135

[g]

 

Total unit net weight excl. packaging

0.34

0.34

[kg]

3, 6

Krm

 

 

[mohm]

3, 6

Erm

 

 

[-]

3, 6

Kxm

 

 

[mH]

3, 6

Exm

 

 

[-]

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

Measured at 25 deg. C

Note 6

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 7

After-burn-in specifications are measured at least 12 hours after exiting the transducer by a 20 Hz sine wave for 2 hours at level 2.83/4.0 VRMS (4/8 ohm version). Unit are not burned in before shipping.

OUTLINE DRAWING AND NOMINAL DIMENSIONS (mm)

WF090WA01/02 outline drawing
WF090WA01_02-outline-drawing

TERMINAL NOMINAL DIMENSIONS (mm)

Terminals

PACKAGING AND ORDERING INFORMATION

Part no. WF090WA01-01

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

Part no. WF090WA01-02

4 ohm version, bulk packaging

Part no. WF090WA02-01

8 ohm version, individual packaging (one pair per box)

Part no. WF090WA02-02

8 ohm version, bulk packaging

Latest update: April 29, 2018
 

 

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

FR090WA01/02 specificationsPDF data sheet

 

 

 

 

 

 

 

 

All Wavecor drive units

 

Technical pages

 

Data in electronic formats

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