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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.
RCA BRIDGED MONO: This option configures your amplifier to drive one loudspeaker from one
unbalanced signal fed to the RIGHT RCA input. The loudspeaker is connected to both channels positive
(+) output terminals, giving an available power in this mode four times the rated output of the amplifier,
approximately 460 watts into 8 ohms. Special care must be taken in connecting the input signal and
loudspeakers to ensure safe operation and best possible performance.
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).
XLR BALANCED MONO: In this mode both channels of your Plinius SA-103 combine to operate as a true
balanced mono amplifier, from input to output. This configuration provides the highest quality mono
performance from a balanced line input connected to the RIGHT BALANCED XLR INPUT. As with RCA
Bridged configuration, the loudspeaker is connected to both channels positive (+) output terminals.
Available power in this mode is four times the rated output of the amplifier, approximately 460 watts RMS
into 8 ohms. Special care must be taken in connecting the input signal and loudspeakers to ensure safe
operation and best possible performance.
BALANCED/UNBALANCED SIGNALS
Balanced or unbalanced input options will depend on the type of signal available from your preamplifier or
other equipment. The Plinius SA-103 provides both options to allow you to choose the most suitable
preamplifier for your purposes. Plinius Preamplifiers offer both balanced and unbalanced output options.
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 SA-103 for use as the standard input terminals for both left and right inputs.
OUTPUT TERMINALS - STEREO
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.