The Revelator midranges are well known for their sliced paper cone technology. The slices are filled with damping glue, which dramatically reduces break-up modes in the diaphragm. In combination with Scan-Speaks low-loss linear suspension and the patented Symmetrical Drive (SD-1) it represented a breakthrough in midrange clarity and overall smooth frequency response characteristics.
Reviews:
Voice Coil, 06-2016
DIY Kits:
Scan-Speak B1371 (D2908/714000, 18M/4631T00, 32W/4878T01)