Aluminium inverted dome tweeter with adaptation ring – Smoothness and definition of sound in every directionsover
component
Boat Foam – Pouring Expanding Flotation Foam – 2lb density closed cell Polyurethane – 1 Gallon – Single Component needs only mixing with 1% to 5% water – Waterproof, Thermal Insulation, Soundproofing.
-Good propeties for flotation , waterproofing , sound proofing , thermal insulation.