User manual

8 Plug and pin assignments

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 ts into the socket, an incorrect connection may result in a destroyed

power amp, a short circuit or ‘just’ in poor transmission quality!

Unbalanced transmission is mainly used in semi-professional environment and in hi

use. Instrument cables with two conductors (one core plus shielding) are typical rep‐

resentatives 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 transmission 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 aects 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 Signal

2 Ground, shielding

1 Signal (left)

2 Signal (right)

3 Ground, shielding

Introduction

Balanced and unbalanced transmis‐

sion

1/4" TS phone plug (mono, unbal‐

anced)

Three-pole 1/8" mini phone jack

(stereo, unbalanced)

Plug and pin assignments

DB01, DB02

Electric Upright Bass