Proel ACDT90 - Manual (Page 9)

2. Input connections
• MICROPHONE CONNECTION:
Despite the kind of microphones you’re using, please always use a
shielded wire.
Please see the following drawings for details about the different
wirings:
Balanced low impedance microphone:
Unbalanced low impedance microphone:
AUX balanced and unbalanced connections.
3. Output connections
Attention
To prevent the risk of electric shock, never touch amplifier outputs
when the amplifier is turned on.
To access to the speaker connection terminals (fig. 2 ref. 17) remove
the protection cover unscrewing the screws.