A stereo system is an electric music system that consists of different electric devices for the sound reproduction of different media, e.g. vinyl or digital media. The main characteristic of a stereo system is that it processes and reproduces two simultaneous, yet separated sound signals for spatial and binaural hearing.
A hi-fi system (hifi = High Fidelity) is an electric stereo system which covers in comparison to a conventional stereo system a broader sound spectrum.
The fundamental frequency of the emitted electric and magnetic fields is 50 Hz resp. 60 Hz due to the operation with voltage mains.
Measurand | Value | Feature | Remarks |
---|---|---|---|
magnetic flux density | 0.02 µT (mean, measured) | - | average value of 30 devices at a distance of 1 m; measurement bandwidth: 40 - 800 Hz ^{ [1] } |
magnetic flux density | 0.04–3 µT (maximum) | - | at a distance of 30 cm ^{ [2] } |
magnetic flux density | 0.08 µT (mean, measured) | - | average value of 30 devices at a distance of 50 cm; measurement bandwidth: 40 - 800 Hz ^{ [1] } |
magnetic flux density | 0.54 µT | - | at a distance of 10 cm ^{ [3] } |
magnetic flux density | 1.56 µT (mean, measured) | - | average value of 30 devices at a distance of 5 cm; measurement bandwidth: 40 - 800 Hz ^{ [1] } |
magnetic flux density | 170 µT (maximum) | - | at the surface of the device at 50 Hz ^{ [4] } |
Measurand | Value | Feature | Remarks |
---|---|---|---|
magnetic flux density | 0.02 µT (mean, measured) | - | average value of 8 devices at a distance of 1 m; measurement bandwidth: 40 - 800 Hz ^{ [1] } |
magnetic flux density | 0.06 µT (measured) | - | average of 23 devices at a distance of 50 cm; measurement bandwidth: 0 - 3 kHz ^{ [3] } |
magnetic flux density | 0.07 µT (mean, measured) | - | average value of 8 devices at a distance of 50 cm; measurement bandwidth: 40 - 800 Hz ^{ [1] } |
magnetic flux density | 0.48 µT (mean, measured) | - | average value of 8 devices at a distance of 5 cm; measurement bandwidth: 40 - 800 Hz ^{ [1] } |
magnetic flux density | 0.54 µT (mean, measured) | - | average of 23 devices at a distance of 10 cm; measurement bandwidth: 0 - 3 kHz ^{ [3] } |
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