SPECIFICATIONS

TW030WA11/12 30 mm textile tweeter with waveguide, 4/8 ohm
TW030WA11 and TW030WA12 are tweeters designed for the most demanding
applications, where low resonance frequency, high sensitivity and power handling,
controlled dispersion, and a very wide frequency range are required.

FEATURES• Featuring waveguide face plate for controlled dispersion, offering optimized off-axis and power
response• 30 mm voice coil design with high power handling, and low resonance frequency• Copper clad center pole yielding very low voice coil inductance for reduced distortion andincreased high frequency output• Internal volumes for low resonance frequency and distortion• Precision-coated textile diaphragm for improved consistency and high-frequency extension• Optimized dome shape for ultra high frequency cutoff• Vented voice coil former for reduced distortion and compression• Copper-clad aluminium voice coil wire offering lower moving mass for improved efficiency andtransient response• Build-in cavities under dome/edge to equalize pressure for lower distortion and lower
resonance frequency• Flexible lead wires for higher power handling and larger excursion• Gold plated terminals to prevent oxidation and ensure long-term reliable connection• Delivered with foam gasket attached for hassle-free mounting and secure cabinet sealing

NOMINAL SPECIFICATIONS
Notes

1, 4
22
23, 4, 6
3
3, 4, 63, 4, 6
3, 4, 63, 4, 63, 4, 63, 4, 64
53, 4, 5
3, 4, 53, 4, 53, 4, 5Note 1
Note 2
Note 3Note 4Note 5Note 6

ValueParameter
Nominal size
Nominal impedance
Recommended frequency range
Sensitivity, 2.83V/1m (average SPL in range 5 - 20 kHz)Power handling, short term, IEC 268-5, 2.5 kHz@12dB/oct.
Power handling, long term, IEC 268-5, 2.5 kHz@12dB/oct.
Power handling, continuous, IEC 268-5, 2.5 kHz@12dB/oct.
Effective radiating area, Sd
Resonance frequency (free air, no baffle), Fs
Moving mass, incl. air (free air, no baffle), Mms
Force factor, Bxl
Suspension compliance, Cms
Equivalent air volume, Vas
Mechanical resistance, Rms
Mechanical Q, Qms
Electrical Q, Qes
Total Q, Qts
Voice coil resistance, RDC
Voice coil inductance, Le (measured at 20 kHz)
Voice coil inside diameter
Voice coil winding height
Air gap height
Theoretical linear motor stroke, Xmax
Magnet weight
Total unit net weight excl. packaging
Krm
Erm
Kxm
Exm

TW030WA1130
4
1.5 - 25
94
500
20055
11.5
410
0.43
1.7
0.35
66
0.57
1.9
1.34
0.79
3.5
2330
1.7
2.5
±0.4

TW030WA1230
8
1.5 - 25
92
500
20055
11.5
425
0.40
2.0
0.35
66
0.57
1.9
1.74
0.90
6.535
30
1.7
2.5
±0.4

0.70
2.9
0.50
58
0.20

0.70
2.80.53424
0.036

Unit
[mm]
[ohm]
[kHz]
[dB]
[W]
[W]
[W]
[cm²]
[kHz]
[g]
[N/A]
[mm/N][mlit.][Ns/m]
[-]
[-]
[-]
[ohm]
[μH]
[mm]
[mm]
[mm]
[mm]
[g]
[kg]
[mohm]
[-]
[mH]
[-]

Measured in infinite baffle.
Tested in free air (no cabinet, no baffle).
Measured using a semi-constant current source, nominal level 2 mA.
Measured at 25 deg. C
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 atechnical paper here at our web site.
Measured before burn in. The unit is not burned in before shipping.

Specifications are subject to change without any further notice. Copyright © 2014-2022 by Wavecor Ltd., China. All rights reserved.
Wavecor® is a registered trademark of Wavecor Ltd.
For more information please visit www.Wavecor.com

Page 1

SPECIFICATIONS

TW030WA11/12 30 mm textile tweeter with waveguide, 4/8 ohmdB

TW030WA11110

SPL response

TW030WA11105
100

Download TW030WA11 SPL response as .txt file95
90

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.

85
80
75
70
65
60

200On axis

15 degr.

500

1k30 degr.
2k45 degr.

60 degr.

5k10kOhm
3020k

40k

Frequency, Hz

June 24, 2022

TW030WA11

Impedance responseTW030WA1120Download TW030WA11 impedance response as .txt file10987Measuring conditions, impedance
Driver mounting: Free air, no baffle,back side open (no cabinet)
Input signal: Stepped sine wave, semicurrent-drive, nominal current 2 mA
Smoothing: None

65432200

500

1k

2k

5k

10k

20k

40k

Frequency, Hz

June 24, 2022

dBTW030WA12 SPL response

110TW030WA12105100

Download TW030WA12 SPL response as .txt file9590

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 sinewave
Smoothing: 1/6 oct.

85
8075
70
65
60

200

On axis15 degr.

500

1k

30 degr.
2k

45 degr.

60 degr.

5k

10k

Ohm
30

20k

40k

Frequency, Hz

June 24, 2022

TW030WA12 Impedance response

TW030WA1220

Download TW030WA12 impedance response as .txt file
10987

Measuring conditions, impedance
Driver mounting: Free air, no baffle,back side open (no cabinet)
Input signal: Stepped sine wave, semicurrent-drive, nominal current 2 mA
Smoothing: None65432200

June 24, 2022

500

1k2k

5k

10k

20k

40k

Frequency, Hz

Specifications are subject to change without any further notice. Copyright © 2014-2022 by Wavecor Ltd., China. All rights reserved.
Wavecor® is a registered trademark of Wavecor Ltd.
For more information please visit www.Wavecor.com

Page 2

SPECIFICATIONS

TW030WA11/12 30 mm textile tweeter with waveguide, 4/8 ohm
HARMONIC DISTORTION
Harmonic Distortion%THD

52nd order

3rd order

TW030WA1143210500

1k

2k

5k

10k

20k

Frequency, Hz

June 23, 2022

Measuring conditions, Harmonic Distortion
Driver mounting: Infinite baffle
Microphone distance: 0.5 mInput signal: Stepped sine wave, 2.0 VRMS (TW030WA11) / 2.83 VRMS (TW030WA12)
Smoothing: 1/6 oct.

Harmonic Distortion%THD

52nd order

3rd order

TW030WA12

432

10500

1k

2k

5k

10k

20k

Frequency, Hz

June 23, 2022

Specifications are subject to change without any further notice. Copyright © 2014-2022 by Wavecor Ltd., China. All rights reserved.
Wavecor® is a registered trademark of Wavecor Ltd.
For more information please visit www.Wavecor.com

Page 3

SPECIFICATIONS

TW030WA11/12 30 mm textile tweeter with waveguide, 4/8 ohm
OUTLINE DRAWING (nominal dimensions)

1.68

Max. 57

4.5

4.5

Dimensions in mm

80
Max. 94
105115

Foam gasket

May 30, 2014

CONNECTIONS

Thickness, both terminals: 0.5 mm
Terminal plating: Gold
Polarity: 4.8 mm terminal is +PACKAGING AND ORDERING INFORMATIONPart no. TW030WA11-01

4 ohm, individual packaging (one piece per box)

Part no. TW030WA11-02

4 ohm, bulk packaging

Part no. TW030WA12-01

8 ohm, individual packaging (one piece per box)

Part no. TW030WA12-02

8 ohm, bulk packaging
Latest update: June 24, 2022

Specifications are subject to change without any further notice. Copyright © 2014-2022 by Wavecor Ltd., China. All rights reserved.
Wavecor® is a registered trademark of Wavecor Ltd.
For more information please visit www.Wavecor.com

Page 4