In Ortofon's descriptions, MM cartridges move a magnet near fixed coils while MC designs move coils in a fixed magnetic field. The company describes different output and stylus service arrangements, with exact specifications varying by model.
Moving magnet (MM) and moving coil (MC) refer to which part of the cartridge generator moves as the stylus follows the record groove. The chart below summarizes Ortofon’s published descriptions. Cartridge output and phono stage requirements vary by model.
Cartridge construction and setup chart
| Check | Moving magnet (Ortofon description) | Moving coil (Ortofon description) |
|---|---|---|
| Moving component | Magnet on the cantilever | Coils on the cantilever |
| Fixed component | Coils near the moving magnet | Magnet system |
| Output description | Ortofon says its MM designs offer higher output | Ortofon says MC designs can have lower output and may need additional amplification |
| Stylus service | Ortofon describes a replaceable stylus for MM | Ortofon describes the styli in its MC cartridges as non-replaceable and offers an exchange service |
| Phono stage check | Match the exact cartridge requirements to the stage | Check gain, loading and compatibility for the exact model |
These are Ortofon’s descriptions of its cartridge families, not a promise that every maker uses identical specifications. Ortofon also notes that cartridge selection depends on the tonearm and phono stage. Check the manuals for the cartridge, turntable and phono stage before changing components.
For the signal path, read does my turntable need a phono preamp?. Browse turntables and analog audio.
Sources
Common questions
What moves in an MM cartridge?
Ortofon describes a small magnet mounted on the cantilever moving between fixed coils.
What moves in an MC cartridge?
Ortofon describes coils mounted on the cantilever moving in the field of a fixed magnet.
Can I use any phono stage with either type?
No universal match is implied. Check the cartridge output and loading requirements against the phono stage specifications.