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Thumbnail Filmstrip of Wavecor Tweeter 30mm TW030WA09 Dome and Face Plate 4 Ohm Images
Wavecor Speaker Driver - TW030WA09 - 4 Ohm 30mm Textile Tweeter
Description
TW030WA09 is a tweeter designed for applications requiring the highest level of performance, with extended and linear high frequency response and best consistency. Innovation Tweeters used to feature a separate rear chamber in order to obtain low resonance frequency. Not any longer. By designing the internal parts to accommodate new larger internal volumes, the TW030WA09 offers an unusually low resonance frequency
Features
- 30 mm design with controlled off-axis and power response, high power handling, and low resonance frequency
- 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 and transient 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
Frequency SPL and Impedance Response Graphs
Loudspeaker Frequency Response Graph
Measuring conditions, SPL
Driver mounting: Flush in infinite baffle
Microphone distance: 1.0 m
Input level: 2.83 VRMS
Smoothing: 1/6 oct.
Technical Specifications
| Notes | Parameter | Value | Unit |
| Nominal size | 30 | mm | |
| Nominal impedance | 4 | Ohm | |
| Recommended frequency range |
2-27 | kHz | |
| 1, 4 | Sensitivity, 2.83V/1m (average SPL in range 2 - 20 kHz) | 92.5 | dB |
| 2 | Power handling, short term, IEC 268-5, 2.5 kHz @ 12dB/oct. | W | |
| 2 | Power handling, long term, IEC 268-5, 2.5 kHz @ 12dB/oct. | W | |
| 2 | Power handling, continuous, IEC 268-5, 2.5 kHz @ 12dB/oct. | W | |
| Effective radiating area, Sd | 11.5 | cm2 | |
| 3, 4, 6 | Resonance frequency (free air, no baffle), Fs | 725 | kHz |
| Moving mass, incl. air (free air, no baffle), Mms | 0.45 | g | |
| 3 | Force factor, Bxl | 2.0 | - |
| 3, 4, 6 | Suspension compliance, Cms | 0.11 | mm/N |
| 3, 4, 6 | Equivalent air volume, Vas | 0.020 | ml |
| 3, 4, 6 | Mechanical resistance, Rms | 0.25 | Ns/m |
| 3, 4, 6 | Mechanical Q, Qms | 8.1 | - |
| 3, 4, 6 | Electrical Q, Qes | 1.74 | - |
| 3, 4, 6 | Total Q, Qts | 1.43 | - |
| 4 | Voice coil resistance, RDC | 3.4 | Ohm |
| 5 | Voice coil inductance, Le (measured at 20 kHz) | uH | |
| Voice coil inside diameter | 30.4 | mm | |
| Voice coil winding height | 1.7 | mm | |
| Air gap height | 2.5 | mm | |
| Theoretical linear motor stroke, Xmax | ±0.40 | mm | |
| Magnet weight | g | ||
| Total unit net weight excl. packaging | kg | ||
| 3, 4, 5 | Krm | mOhm | |
| 3, 4, 5 | Erm | - | |
| 3, 4, 5 | Kxm | mH | |
| 3, 4, 5 | Exm | - |
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
Driver Nominal Dimensions
Loudspeaker Driver Dimensions and Measurements - all dimensions in mm (approx.)
Terminal Nominal Dimensions
Loudspeaker Driver Terminal Dimensions and Measurements - all dimensions in mm (approx.)
Thickness, both terminals: 0.5 mm
Terminal plating: Gold