A wireless mic runs with no physical cable that directly connects it to the related amplifier.
A wireless mic system enables the user’s voice to be transmitted to its receiver which is set in the sound system in a wireless way. The sound system then enhances the signal from the receiver and delivers it through the system’s speaker
A wireless system is a system of three main components, namely input device, transmitter, and receiver. They run together to achieve a smooth operation of the whole system.
1. Input device
The input device, which is always a microphone, offers the audio signal that will be sent out by the transmitter. It is hand-held or hands-free and connects to the transmitter.
2. Transmitter
The transmitter is responsible for the conversion of the audio from the microphone to radio waves and then the transmission of such waves to the receiver through an antenna. The antenna probably is out at the bottom of the wireless microphone transmitter or is hidden inside.
3. Receiver
The receiver is intended to collect the radio signal sent over by the transmitter and change it back into an audio signal so that it can be amplified by the sound system. The receiver can be connected to a typical microphone input of a sound system. Its output is electrically equal to a standard microphone signal.
Note:
Different brands of wireless mic system are incompatible with each other. This is because each manufacturer may use specific radio frequencies and adopt different methods of transmission.
A transmitter in general only runs with the specific receiver it was designed and launched to be with. In fact, even the same manufacturer of both pieces may use different models and frequencies for different kits.