A magnetic cartridge is a transducer that is used for playback in a turntable. It is used for the conversion of mechanical energy from the stylus of the record groove into electrical charges. The charges generated by the magnetic turntable cartridges are always amplified and converted to musical sound that is further transmitted to the loudspeaker.
Usually, they are made of a magnetic substance that exerts light pressure on the grove, thus improving its playback quality and reducing the rate of record wear. Moreover, the magnets help them to apply lighter tracking force, which essentially limits extent of grove destruction. Magnetic cartridges also have relatively lower rates of voltage output which requires large amounts of amplification.
The turntable cartridge often uses quite a wide range of working mechanisms in order to generate a quality playback system. Majorly, the magnetic types either use a movingLearn How To Make Use Of Nationwide Movers. Read more ... » coil or a movingLearn How To Make Use Of Nationwide Movers. Read more ... » magnet in their playback system. The movingLearn How To Make Use Of Nationwide Movers. Read more ... » coil cartridge has thin wires and a tiny electromagnetic generator, which attracts the stylus and moves within the electromagnetic field generated by the main magnet of the cartridge.
The electromagnetic generator is used to produce small amounts of electric voltage since it has few windings of the thin wires. Therefore, it produces few micro-volts of the electric signals that are readily consumed by the loudspeaker noise. As such, a step-up transformer is usually used to boost the amplification of the moving coil cartridge in order to reduce the noise of the loudspeaker.
There are also other high-output moving coil cartridges that effectively perform to cater for production of high amounts of voltage. Moving coil cartridges may be very tiny precision instruments and expensive, but they are greatly preferred by audiophiles because they give better performances. On the other hand, moving magnet types constitute of styli cantilevers which have tiny magnets that then form electromagnetic generators.
The magnets are placed between the fixed coils in order to vibrate in response to the movement of the needle on the record groove. This movement further generates large amounts of electric currents. It can also be noted that a turntable cartridge uses different sets of magnets to enhance its performance rate.
The devices have moving irons and induced magnetic materials, which are attached to the cantilever of the stylus in order to enhance the movement of the irons. They as well have a bigger magnet that is positioned over the coils to generate the magnetic influx for its operation. Evidently, the moving coil and moving magnet cartridges have particular differences that have been used to evaluate their performances.
Moving coil turntable cartridges offer very low inductance, while the moving magnet types offer relatively high inductance and impedance. However, high inductance can negatively affect flatness of frequency and phase linearity. In such a situation, the moving coil cartridge would be preferable to moving magnet cartridge. Therefore, preference of the best cartridge for a turntable would entirely depend on the aforementioned factors, including cost, design, and inductance, among others.
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