10
CONNECTIONS
The connection cables which connect the amplifiers output and the speaker should be
of good quality, have sufficient conductor area and be as short as possible. The latter
fact is especially important when the distance is long and the load impedance low (4-8
Ω
). A cross-section of at least 2.5mm2 is recommended for distances up to 10m; 4 or
6mm2 for longer distances. Following formula gives the required section, assuming 4%
losses:
Cross section in mm
2
=
Length in m
Loudspeaker impedance in Ω
Always respect the polarity. All models have an Euroblock connector, and a second
connector (Euroblock or Speakon®, depending on model), thereby facilitating the
parallel connection of speakers.
6.1 ARQISSB6Ti
ARQISSB6Ti supports high or low impedance operation. In this matter, it has a 3-
position switch on its rear panel that allows to select its working mode.
The 8Ω/120W position corresponds to low impedance operation at a maximum power
of 120W. The 2 positions of the power selector switch for 70/100V line will allow you
to
set
the
maximum
power
at
which
each
unit
will
work
(60/120W @ 100V | 30/60W @ 70W) .
Note:
The loudspeaker distribution along a 70/100V line historically arises from the
technical requirement to mix loudspeakers of different impedances and/or powers on
the same amplification line or channel, but without any need to worry about the total
