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FR090WA01/02     3 alu cone fullrange, 4/8 ohm

 

 

 

 

The 3” transducers FR090WA01 (4 ohm) and FR090WA02 (8 ohm) were designed especially for high quality multimedia and lifestyle speakers, where sound reproduction without compromises is required while still keeping size small. 

Frequency resp.
Specifications
Dimensions
Ordering info

FEATURES

FR090WA01_02_photo
  • True full-range design with on-axis output to beyond 20kHz
  • Copper cap on center pole to reduce voice coil inductance and to minimize variations in voice coil inductance as a function of voice coil position
  • Black anodized alu cone for better heat transfer
  • Vented steel chassis for lower air flow speed reducing audible distortion
  • Vented voice coil former for reduced distortion and compression
  • Heavy-duty black fiber glass voice coil bobbin to reduce mechanical losses resulting in better dynamic performance and low-level details
  • Large motor with 22 mm voice coil diameter for better control and power handling
  • Low-loss suspension (high Qm) for better reproduction of details and dynamics
  • Black 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 EVA gasket attached for hassle-free mounting and secure cabinet sealing

FREQUENCY RESPONSE

FR090WA01-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

FR090WA02-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

FR090WA01

FR090WA02

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

full range

full range

[kHz]

1, 4

Sensitivity, 2.83V/1m (average SPL in range 200 - 8,000 Hz)

86.5

83.5

[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

10

10

[W]

 

Effective radiating area, Sd

36

36

[sq.cm]

3, 4, 6

Resonance frequency (free air, no baffle), Fs

113

109

114

110

[Hz]

 

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

3.45

3.35

[g]

3

Force factor, Bxl

2.75

3.4

[N/A]

3, 4, 6

Suspension compliance, Cms

0.58

0.62

0.58

0.62

[mm/N]

3, 4, 6

Equivalent air volume, Vas

1.07

1.14

1.07

1.14

[lit.]

3, 4, 6

Mechanical resistance, Rms

0.41

0.40

0.41

0.41

[Ns/m]

3, 4, 6

Mechanical Q, Qms

6.0

5.9

5.9

5.8

[-]

3, 4, 6

Electrical Q, Qes

1.03

1.0

1.27

1.23

[-]

3, 4, 6

Total Q, Qts

0.88

0.85

1.04

1.01

[-]

4

Voice coil resistance, RDC

3.2

6.1

[ohm]

5

Voice coil inductance, Le (measured at 10 kHz)

76

127

[μH]

 

Voice coil inside diameter

22

22

[mm]

 

Voice coil winding height

7.5

7.5

[mm]

 

Air gap height

3

3

[mm]

 

Theoretical linear motor stroke, Xmax

2.25

2.25

[mm]

 

Magnet weight

160

160

[g]

 

Total unit net weight excl. packaging

0.40

0.40

[kg]

3, 4, 5

Krm

 

 

[mohm]

3, 4, 5

Erm

 

 

[-]

3, 4, 5

Kxm

 

 

[mH]

3, 4, 5

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 25 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 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)

FR090WA01/02 outline drawing
FR090WA01_02-outline-drawing

TERMINAL NOMINAL DIMENSIONS (mm)

Terminals

PACKAGING AND ORDERING INFORMATION

Part no. FR090WA01-01

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

Part no. FR090WA01-02

4 ohm version, bulk packaging

Part no. FR090WA02-01

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

Part no. FR090WA02-02

8 ohm version, bulk packaging

Latest update: December 18, 2015
 

 

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
(560 KB)

 

 

 

 

 

 

 

 

All Wavecor drive units

 

Technical pages

 

Data in electronic formats

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