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TW022WA07/08/09/10    22 mm chambered neo textile tweeter, 4/8 ohm

 

 

 

 

 

 

TW022WA07/09 and TW022WA08/10 are true high-end tweeters designed for the most demanding applications featuring an array of performance improving details that participate in obtaining low resonance frequency, low distortion and very high frequency extension

FEATURES

  • Precision textile dome ensuring extended response and very good consistency
  • 22 mm voice coil design with high power handling and low resonance frequency
  • Copper foil clad center pole yielding very low voice coil inductance for reduced distortion and increased high frequency output
  • Vented through to a damped rear chamber for low resonance frequency and low distortion
  • Optimized light-weight dome for ultra high frequency cut-off, high effeciency, and improved transient response
  • Vented voice coil former for reduced distortion and compression
  • Copper-clad aluminium voice coil wire offering lower moving mass for improved efficiency and transient response
  • Built-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

FREQUENCY RESPONSE

TW022WA09 / TW022WA10 (above)
TW022WA07 / TW022WA08 (below)

TW022WA07_09-side-view-200px

Frequency resp.
Downloads
Parameters
Harm. distortion
Dimensions
Ordering info

TW022WA07_09-SPL

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

TW022WA07_09-impedance
TW022WA08_10-SPL

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

TW022WA08_10-impedance

Downloads
SPL and impedance response curves as text files

TW022WA07/09 SPL response

TW022WA07/09 on-axis SPL response

TW022WA07/09 imp response

TW022WA07/09 impedance response

TW022WA08/10 SPL response

TW022WA08/10 on-axis SPL response

TW022WA08/10 imp response

TW022WA08/10 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.

NOMINAL SPECIFICATIONS

Notes

  Parameter

TW022WA07
TW022WA09

TW022WA08
TW022WA10

Unit

 

Nominal size

22

22

[mm]

 

Nominal impedance

4

8

[ohm]

 

Recommended frequency range

2 - 30

2 - 30

[kHz]

1, 4

Sensitivity, 2.83V/1m (average SPL in range 2 - 20 kHz)

92

89.5

[dB]

2

Power handling, short term, IEC 268-5, 2.5 kHz@12dB/oct.

700

700

[W]

2

Power handling, long term, IEC 268-5, 2.5 kHz@12dB/oct.

70

70

[W]

2

Power handling, continuous, IEC 268-5, 2.5 kHz@12dB/oct.

20

20

[W]

 

Effective radiating area, Sd

6.1

6.1

[sq.cm]

3, 4, 6

Resonance frequency (free air, no baffle), Fs

700

730

[Hz]

 

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

0.27

0.25

[g]

3

Force factor, Bxl

1.76

2.24

[N/A]

3, 4, 6

Suspension compliance, Cms

0.19

0.19

[mm/N]

3, 4, 6

Equivalent air volume, Vas

10

10

[mlit.]

3, 4, 6

Mechanical resistance, Rms

0.93

0.93

[Ns/m]

3, 4, 6

Mechanical Q, Qms

1.3

1.2

[-]

3, 4, 6

Electrical Q, Qes

1.2

1.4

[-]

3, 4, 6

Total Q, Qts

0.62

0.66

[-]

4

Voice coil resistance, RDC

3.1

6.0

[ohm]

5

Voice coil inductance, Le (measured at 20 kHz)

22

37

[μH]

 

Voice coil inside diameter

22

22

[mm]

 

Voice coil winding height

1.8

1.8

[mm]

 

Air gap height

2.5

2.5

[mm]

 

Theoretical linear motor stroke, Xmax

+/-0.35

+/-0.35

[mm]

 

Magnet weight

18.5

18.5

[g]

 

Total unit net weight excl. packaging

77/94

77/94

[g]

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

Measured before burn in

HARMONIC DISTORTION

TW022WA07_09-dist

Measuring conditions, harmonic distortion
Driver mounting: In infinite baffle
Microphone distance: 0.5 m
Input signal: Stepped sine wave, 2.0 VRMS (TW022WA07/09), 2.83 VRMS (TW022WA09/10)
Smoothing: 1/6 oct.

TW022WA08_10-dist

OUTLINE DRAWING AND NOMINAL DIMENSIONS

TW022WA07_08_09_10 outline drawing
TW022WA07_08_09_10-outline

PACKAGING AND ORDERING INFORMATION

Part no. TW022WA07-01

4 ohm version, without face plate, individual packaging (one pair per box)

Part no. TW022WA07-02

4 ohm version, without face plate, bulk (industrial) packaging

Part no. TW022WA08-01

8 ohm version, without face plate, individual packaging (one pair per box)

Part no. TW022WA08-02

8 ohm version, without face plate, bulk (industrial) packaging

Part no. TW022WA09-01

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

Part no. TW022WA09-02

4 ohm version, with face plate, bulk (industrial) packaging

Part no. TW022WA10-01

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

Part no. TW022WA10-02

8 ohm version, with face plate, bulk (industrial) packaging

Latest update: October 10, 2020

 

Specifications are subject to change without any further notice.
Copyright © 2006-2020 by Wavecor Ltd., Zhongshan, China. All rights reserved.

 

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MORE INFO

TW022WA07_08_09_10 specificationsPDF data sheet

 

 

 

 

 

 

 

 

TW022WA07_08_09_10 specificationsList of all Wavecor tweeters

 

 

 

 

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