PRV Audio TW100SD-4 (Pair)The Pair of TW100SD 4 cloth dome tweeter (also referred to as a soft dome) is designed ideally for 2 way system, as an upgrade for that standard factory tweeter. It is the perfect balance between high fidelity sound and a compact design, making this 28 mm dome tweeter a preferred choice for high end car sound systems. The usage of neodymium magnets as power house ensures high efficiency while still keeping size small, with only 2. 16 diameter and less