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Thumbnail Filmstrip of Wavecor Tweeter 30mm TW030WA11 Wave Guide Dome Ferrite 4 Ohm Images
Wavecor Speaker Driver - TW030WA11 - 4 Ohm Textile Tweeter with Waveguide
Description
The TW030WA11 tweeter is 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 and increased high frequency output
- Internal volumes for low resonance frequency and distortion
- Precision-coated textile diaphragm for improved consistency and high-frequency extension
- Optimised 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.
Loudspeaker Impedance Response Graph
Measuring conditions, impedance
Driver mounting: Free air, no baffle
Input signal: Stepped sine wave, semi-current-drive, nominal current 2 mA
Smoothing: None
Technical Specifications
| Notes | Parameter | Value | Unit |
| Nominal size | 30 | mm | |
| Nominal impedance | 4 | Ohm | |
| Recommended frequency range |
1.5-25 | kHz | |
| 1, 4 | Sensitivity, 2.83V/1m (average SPL in range 2 - 20 kHz) | 93.5 | 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. | 45 | W |
| Effective radiating area, Sd | 11.5 | cm2 | |
| 3, 4, 6 | Resonance frequency (free air, no baffle), Fs | 410 | kHz |
| Moving mass, incl. air (free air, no baffle), Mms | 0.43 | g | |
| 3 | Force factor, Bxl | 1.7 | - |
| 3, 4, 6 | Suspension compliance, Cms | 0.35 | mm/N |
| 3, 4, 6 | Equivalent air volume, Vas | 66 | ml |
| 3, 4, 6 | Mechanical resistance, Rms | 0.57 | Ns/m |
| 3, 4, 6 | Mechanical Q, Qms | 1.9 | - |
| 3, 4, 6 | Electrical Q, Qes | 1.34 | - |
| 3, 4, 6 | Total Q, Qts | 0.79 | - |
| 4 | Voice coil resistance, RDC | 3.5 | Ohm |
| 5 | Voice coil inductance, Le (measured at 20 kHz) | 23 | 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 | 0.70 | kg | |
| 3, 4, 5 | Krm | 2.9 | mOhm |
| 3, 4, 5 | Erm | 0.50 | - |
| 3, 4, 5 | Kxm | 58 | mH |
| 3, 4, 5 | Exm | 0.20 | - |
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