ESB 4.28 4000 Series 1.1 Inch Silk Dome Tweeter 100w RMS Pair4. 28 1. 1" 28 mm Dome Tweeter Silk dome with polymer laminated (Sonatex) creates a perfect balance between weight, rigidity, and self damping. The catenary curvature ensures wide dispersion of the tweeter. Under dome felt damper improves acoustic phase by absorbing reflections from the magnetic structure that bounce through the dome. High grade neodymium magnet. Not all magnets of equal size are equal in strength. This high grade (N 52), high energy