The ICU Universal 2-way coaxial speaker kit improves on your original-fit speaker installation. Its compact size, achieved by reducing the housing depth, and its snap-off fixings make this kit easy to fit. The new generation Universal comes with innovations and new features, including a new inverted aluminum/magnesium tweeter for even more detailed treble reproduction. A new chassis has also been designed for optimal integration and more elegant design. All this is with just one objective: to offer easy-fit products that maintain the excellent sound. On this coaxial model, the aluminum/magnesium tweeter has a 2-position +3 dB adjuster (Flat/High) for a treble boost. This adjustment comes into its own when the speaker is placed low in the door. Shallow fitting: 49 mm.