A phonograph cartridge is an electromechanical transducer that is used to play records on a turntable. There are two main types of cartridges: moving magnet (MM) and moving coil (MC).
- Moving magnet cartridges have a magnet that is attached to the cantilever, and a coil of wire that is wrapped around the magnet. As the stylus moves in the record groove, the magnet moves, and the coil generates an electrical signal.
- Moving coil cartridges have a coil of wire that is attached to the cantilever, and a magnet that is fixed in place. As the stylus moves in the record groove, the coil moves, and the magnet generates an electrical signal.
There are a few ways to tell if your cartridge is moving magnet or coil.
- Look at the stylus. Moving magnet cartridges typically have a diamond stylus tip that is 0.001 inches wide. Moving coil cartridges typically have a longer and narrower diamond stylus tip, measuring 0.001-0.004 inches wide.
- Read the specifications. The specifications for your cartridge will usually indicate whether it is moving magnet or coil.
- Contact the manufacturer. If you are still not sure, you can contact the manufacturer of your cartridge and they will be able to tell you.
Here is a table that summarizes the key differences between moving magnet and moving coil cartridges:
| Feature | Moving Magnet | Moving Coil |
|---|---|---|
| Magnet | Mounted on cantilever | Fixed in place |
| Coil | Mounted on cantilever | Fixed in place |
| Stylus tip | 0.001 inches wide | 0.001-0.004 inches wide |
| Output level | Higher | Lower |
| Price | Less expensive | More expensive |
Moving magnet cartridges are more common and less expensive than moving coil cartridges. They also have a higher output level, which means that they can be connected to a wider range of amplifiers. Moving coil cartridges have a lower output level, but they are said to have better sound quality. They are also more sensitive to noise, so they require a higher-quality amplifier.
The best type of cartridge for you will depend on your budget and your listening preferences. If you are looking for a cartridge that is easy to set up and use, and that is compatible with a wide range of amplifiers, a moving magnet cartridge is a good option. If you are looking for a cartridge with the best possible sound quality, a moving coil cartridge is a good choice.