Page 1
Model R98B Cartridge The R98B is a replacement microphone cartridge for the 577B microphone. To replace the present cartridge with the R98: 1. Disassemble the case as described above.
Page 2
Shure Incorporated 4. Slide the cartridge out of the chassis module, remove the retaining ring from around the screen, and remove the O-ring from the rear of the cartridge. 5. Place the retaining ring and the O-ring on the replacement cartridge and slide the replacement cartridge into the chassis module.