SX 690 H NEO coaxial for Harley is a real beast with a Hi-SPL Mid-Hi unit based on a 1.4” dome tweeter and 1” dome super tweeter with a resettable solid-state protection circuit. The cone is made with nature-proof high-stiffness pressed paper featuring innovative water/humidity resistance and anti-UV treatments. The double-layer copper voice coil wound on polyimide former ensures unparalleled power handling. New motor units are made of special Neodymium N38 H to obtain a minimum bulk and increased performance.