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FR084WA03

 

 

 

 

 

The 3.25" transducer FR084WA03 (64 ohm) was designed specifically for high quality Line Arrays / Line Sources, where sound reproduction without compromises is required. Target configurations are designs with 8 transducers in a Line (8 ohms) or 16 transducers in a Line (4 ohms).

Frequency resp.
Specifications
Harmonic distortion
Dimensions
Ordering info

FEATURES

  • True full-range design 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
  • 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

FREQUENCY RESPONSE

FR055WA01-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

FR055WA01-IMP-response

NOMINAL SPECIFICATIONS

Notes

  Parameter

FR084WA03

Unit

Before burn-in

After burn-in

 

Nominal size

3.25"

[inch.]

 

Nominal impedance

64

[ohm]

 

Recommended max. upper frequency limit

full range

[kHz]

1, 4

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

 

[dB]

2

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

30

[W]

2

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

25

[W]

2

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

10

[W]

 

Effective radiating area, Sd

36

[sq.cm]

3, 4, 6

Resonance frequency (free air, no baffle), Fs

 

 

[Hz]

 

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

 

[g]

3

Force factor, Bxl

 

[N/A]

3, 4, 6

Suspension compliance, Cms

 

 

[mm/N]

3, 4, 6

Equivalent air volume, Vas

 

 

[lit.]

3, 4, 6

Mechanical resistance, Rms

 

 

[Ns/m]

3, 4, 6

Mechanical Q, Qms

 

 

[-]

3, 4, 6

Electrical Q, Qes

 

 

[-]

3, 4, 6

Total Q, Qts

 

 

[-]

4

Voice coil resistance, RDC

 

[ohm]

5

Voice coil inductance, Le (measured at 10 kHz)

 

[μH]

 

Voice coil inside diameter

22

[mm]

 

Voice coil winding height

 

[mm]

 

Air gap height

3

[mm]

 

Theoretical linear motor stroke, Xmax

 

[mm]

 

Magnet weight

160

[g]

 

Total unit net weight excl. packaging

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 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.

HARMONIC DISTORTION

FR084WA01-harmonic-distortion

Measuring conditions, harmonic distortion
Driver mounting: In sealed, heavily stuffed enclosure, internal volume 1.0 lit.,
Microphone distance: 0.5 m
Input signal: Stepped sine wave, 2.0 VRMS (FR084WA01) / 2.83 VRMS (FR084WA02)
Smoothing: 1/6 oct.

FR084WA02-harmonic-distortion

OUTLINE DRAWING AND NOMINAL DIMENSIONS (mm)

FR084WA01/02 outline drawing
FR084WA01-outline

TERMINAL NOMINAL DIMENSIONS (mm)

FR084WA01_02-terminals

Both terminals gold plated

PACKAGING AND ORDERING INFORMATION

Part no. FR084WA03-01

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

Part no. FR084WA03-02

64 ohm version, bulk packaging

Latest update: October 19, 2020

 

Specifications are subject to change without any further notice.
Copyright © 2006-2021 by Wavecor Ltd., China. All rights reserved.

 

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MORE INFO

FR084WA01/02 specificationsPDF data sheet

 

 

 

 

 

 

 

 

All Wavecor drive units

 

 

 

 

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