RCF Diaphragm for ND840 – 8 Ohm Replacement

Genuine RCF replacement diaphragm for the ND840 neodymium compression driver, 8 ohm version. The ND840 is a high-performance 3″ diaphragm compression driver with 1.4″ exit throat used in many RCF top-end loudspeakers including TT and HDL series cabinets.

The diaphragm is precision-formed entirely from pure titanium with the original-spec voice coil pre-aligned for drop-in fitment. Genuine RCF parts fully restore factory frequency response, sensitivity, transient response and power handling – and preserve any remaining cabinet warranty.

Installation should be carried out in a clean, dust-free workspace by a qualified technician. Always inspect the magnetic gap for debris and follow the official RCF service documentation for the specific cabinet / driver combination.