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The ACS switch options are:
RCA STEREO: This option provides a stereo output via both left and right output channels from a stereo
signal connected to both left and right input RCA inputs.
XLR STEREO: This option provides a stereo output signal from a balanced stereo input signal connected
to both the left and right XLR inputs. All the advantages of balanced line transmission will be realised with
good rejection of noise and some freedom from earth or ground loops (hum).
BALANCED/UNBALANCED SIGNALS
Balanced or unbalanced input options will depend on the type of signal available from your processor or
other equipment. The Plinius SB-301 provides both options to allow you to choose the most suitable
processor for your purposes.
BALANCED LINE is normally used to transmit signals in a professional environment. Because balanced
line effectively reduces or eliminates noise pick-up by the system cabling, it has become increasingly
more important in high-quality domestic high fidelity systems.
UNBALANCED leads such as single ended, RCA or coaxial are common and are used in the majority of
audio signal systems. The terminal plug and socket are most commonly called RCA and can be found on
your Plinius SB-301 for use as the standard input terminals for both left and right inputs.
OUTPUT TERMINALS
Output connections for the loudspeakers are provided on the left and right hand side of the rear panel.
Two parallel pairs of binding posts for each channel are fitted – these provide ease of use with bi-wiring
and multiple cables requiring a large contact area.
MAINS SWITCH
This heavy-duty rocker switch on the rear panel turns the Mains/Line Power to the amplifier ON or OFF.
An LED in the centre of the front panel indicates that the power is on. When first switched on the power
LED will vary in brightness for ten seconds - this is an initialisation sequence, after which the power LED
remains lit. The amplifier draws a moderately high current when switched on. Despite the "Soft Start
Circuit" within the amplifier reducing current demand on the mains as the amplifier is switched on, it is
not good practice to rapidly turn the Mains switch on and off repeatedly.