Proel AUP4125S - Manuale (Pagina 23)

23
5. LOUDSPEAKER CONNECTION
Hereunder is a description that can be applied to each channel.
Attention
To avoid the risk of electric shocks, never touch the amplifier outputs when they are operating.
The device can be used with loudspeakers having constant impedance (4Ω) as well as constant voltage (70V, 100V). Keep
the following instructions in mind when carrying out connections.
Constant impedance line
Turn the operating method selector (Fig. 2, Ref. 5) to 4Ω.
Connect the constant impedance line (4Ω) between the two “+” and “‐” terminals (Fig. 2, Ref. 8) .
9 In order to ensure maximum performance, total impedance of the loudspeakers connected to the line must be
equivalent to the output impedance of the amplifier.
9 The total power of the diffusers must not be less than the output power of the amplifier.
9 It is advisable to minimize the length of connection, and anyhow increase the cable section according to the distance
covered.
Constant voltage line
Turn the operating method selector (Fig. 2, Ref. 5) to 100V.
Connect the constant voltage line (100V) between the two “+” and “‐” terminals (Fig. 2, Ref. 8) .
9 The loudspeakers must be supplied with a transformer having an input voltage equivalent to that of the amplifier.
9 The total power of the loudspeakers must not exceed the maximum output power of the amplifier.