8 Plug and connection assignment
Introduction
This chapter will help you select the right cables and plugs to connect your valuable equipment in such a way that a perfect
sound experience is ensured.
Please note these advices, because especially in ‘Sound & Light’ caution is indicated: Even if a plug fits into the socket, an incorrect
connection may result in a destroyed power amp, a short circuit or ‘just’ in poor transmission quality!
Balanced and unbalanced transmission
Unbalanced transmission is mainly used in semi-professional environment and in hifi use. Instrument cables with two conductors
(one core plus shielding) are typical representatives of the unbalanced transmission. One conductor is ground and shielding
while the signal is transmitted through the core.
Unbalanced transmission is susceptible to electromagnetic interference, especially at low levels, such as microphone signals and
when using long cables.
In a professional environment, therefore, the balanced transmission is preferred, because this enables an undisturbed transmis-
sion of signals over long distances. In addition to the conductors ‘Ground’ and ‘Signal’, in a balanced transmission a second core is
added. This also transfers the signal, but phase-shifted by 180°.
Since the interference affects both cores equally, by subtracting the phase-shifted signals, the interfering signal is completely
neutralized. The result is a pure signal without any noise interference.
1/4" TS phone plug (mono, unbalanced)
1 Signal
2 Ground, shielding
Three-pole 1/8" mini phone jack (stereo, unbalanced)
1 Signal (left)
2 Signal (right)
3 Ground, shielding
Plug and connection assignment
MPS-850
27
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