PROJECT360.64RCK 6.5” Rotating Recone Replacement Assembly The PROJECT360.64RCK is a replacement rotating recone assembly designed for fast, tool-free repairs and instant restoration of performance. Built specifically for DS18’s PROJECT360 platform, this recone allows damaged speakers to be serviced on the spot without glue, curing time, or complicated rebuilds. Instant Drop-In Repair Featuring DS18’s rotating lock-in design, the complete cone assembly lifts out cleanly and locks back into place