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FR055WA05 2" / FR084WA03 3"       64 ohm fullranges for Line Arrays

 

 

 

 

The two 64 ohm fullrange transducers FR055WA05 (2”) and FR084WA03 (3.25") share same design ideas, performance targets, and applications. Both were designed for high quality Line Arrays, with 8 transducers connected in parallel (8 ohm system impedance), or 16 in parallel for 4 ohm system impedance.

64 ohm fullrange pair

Frequency resp.
Specifications
Harmonic distortion
Dimensions
Ordering info

Line-array-8-units

FEATURES

  • True full-range designs with on-axis output to beyond 20 kHz
  • 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 (FR084WA03 only)
  • Black anodized alu cone for better heat transfer
  • Vented polymer 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 foam gasket attached for hassle-free mounting and secure cabinet sealing

Downloads
SPL and impedance response curves as text files

FR055WA05 SPL

FR055WA05 on-axis SPL response

FR055WA05 impedance

FR055WA05 impedance response

FR084WA03 SPL

FR084WA03 on-axis SPL response

FR084WA03 impedance

FR084WA03 impedance response

Important!
Please observe that these text files for download are actual measurements of the drivers measured in infinite baffle and without any enclosure. Measuring the drivers in a finite baffle (like the baffle of most speaker cabinets) and in any size of enclosure will lead to different response curves.

FREQUENCY RESPONSE

FR055WA05 SPL response

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

FR055WA05 impedance response
FR084WA03 SPL response

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

FR084WA03 impedance response

NOMINAL SPECIFICATIONS

Notes

  Parameter

FR055WA05
2”  64 ohm

FR084WA03
3.25”  64 ohm

Unit

Before burn-in

After burn-in

Before burn-in

After burn-in

 

Nominal size

2"

3.25"

[inch.]

 

Nominal impedance

64

64

[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)

70

74

[dB]

2

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

40

30

[W]

2

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

20

25

[W]

2

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

4

10

[W]

 

Effective radiating area, Sd

15.6

36

[sq.cm]

3, 4, 6

Resonance frequency (free air, no baffle), Fs

149

135

120

116

[Hz]

 

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

1.45

3.05

[g]

3

Force factor, Bxl

5.5

6.8

[N/A]

3, 4, 6

Suspension compliance, Cms

0.785

0.96

0.58

0.62

[mm/N]

3, 4, 6

Equivalent air volume, Vas

0.27

0.33

1.07

1.14

[lit.]

3, 4, 6

Mechanical resistance, Rms

0.16

0.16

0.30

0.30

[Ns/m]

3, 4, 6

Mechanical Q, Qms

8.5

7.7

7.6

7.4

[-]

3, 4, 6

Electrical Q, Qes

2.37

2.14

2.43

2.35

[-]

3, 4, 6

Total Q, Qts

1.85

1.67

1.94

1.78

[-]

4

Voice coil resistance, RDC

53.5

49

[ohm]

5

Voice coil inductance, Le (measured at 10 kHz)

0.64

0.63

[mH]

 

Voice coil inside diameter

22

22

[mm]

 

Voice coil winding height

4.7

8

[mm]

 

Air gap height

2

3

[mm]

 

Theoretical linear motor stroke, Xmax

+/-1.35

+/-2.5

[mm]

 

Magnet type

Dual Neodymium

Ferrite

[-]

 

Magnet weight

19

160

[g]

 

Total unit net weight excl. packaging

0.071

0.37

[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 12 hours after exiting the transducer by a continuous sine wave for 2 hours. The sine wave frequency equals the transducer Fs, at level 15 VRMS (FR055WA05), 19 VRMS (FR084WA03).
Units are not burned in before shipping.
.

HARMONIC DISTORTION

FR055WA05 harmonic distortion

Measuring conditions, harmonic distortion
Driver mounting: In sealed, heavily stuffed enclosure, internal volume 0.5 lit. (FR055WA05) / 1.0 lit. (FR084WA03).,
Microphone distance: 0.5 m
Input signal: Stepped sine wave, 5.1 VRMS (FR055WA05) / 8.0 VRMS (FR084WA03
Smoothing: 1/6 oct.

FR084WA03 harmonic distortion

OUTLINE DRAWING AND NOMINAL DIMENSIONS (mm)

64 ohm fullranges outline drawing
64 ohm fullranges outline drawing

TERMINAL NOMINAL DIMENSIONS (mm)

Terminals

PACKAGING AND ORDERING INFORMATION

Part no. FR055WA05-01

64 ohm version, packed in pairs

Part no. FR055WA05-02

64 ohm version, bulk packaging

Part no. FR084WA03-01

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

Part no. FR084WA03-02

64 ohm version, bulk packaging

Latest update: June 6, 2022

 

Specifications are subject to change without any further notice.
Copyright © 2006-2022 by Wavecor Ltd., China. All rights reserved.

 

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MORE INFO

FR055WA05 / FR084WA03 specificationsPDF data sheet

 

 

 

 

 

 

 

 

 

 

Technical pages

 

 

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