 |
 |
|
|
|
|
|
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Downloads
SPL and impedance response curves as text files
|
|
|
|
FR055WA05 on-axis SPL response
|
|
FR055WA05 impedance response
|
|
|
FR084WA03 on-axis SPL response
|
|
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
|
|
|
|
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
|
|
|
|
OUTLINE DRAWING AND NOMINAL DIMENSIONS (mm)
|
|
|
|
|
|
|
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.
|
|
|
|
|
|
MORE INFO
|
|
|
|
|
|
