4.281.1” / 28mm Silk Dome Tweeter
Overview & Key Features
The 4.28 is a high-performance 28mm dome tweeter designed for clarity, detail, and wide dispersion. Its silk dome is reinforced with a polymer laminated Sonatex™ layer for ideal balance of weight, rigidity, and damping. A catenary curve design improves off-axis performance, making it ideal for automotive applications.
- Felt damper under the dome absorbs internal reflections and improves phase accuracy.
- High-grade N52 neodymium magnet offers over 25% more magnetic strength than lower-grade options for better output and control.
- Fiberglass-filled ABS housing provides structural strength without added weight.
- Internal acoustic resistance element controls dome motion, minimizing distortion and improving impedance linearity.
- CNC-machined ultra-low carbon alloy steel pole plate ensures flush, magnet-optimized assembly.
- Vented copper-clad aluminum voice coil offers high power handling, fast response, and efficient heat dissipation.
- Stainless-steel grille with acoustically tuned perforations acts as a sound lens, ensuring consistent on- and off-axis response.
- CNC-machined aluminum alloy flange with flush mounting design for clean integration.
Technical Specifications
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Nominal Impedance: 4 Ohm
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Power Handling: 100W RMS
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Transient Power: 200W Peak
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Frequency Response: 1.5 kHz – 22 kHz
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Sensitivity: 93.5 dB (2.83V/1m)
