Ecler TRAIL103 User manual - page 5
5
The 100V line connector makes it possible to set the maximum power with which
each unit will operate. So in areas where a low noise level is required, the 0 and 15W
terminals are used to connect the loudspeaker, while in areas here a higher level is
required, the 0 and 30W terminals are used.
Note: in the event of using the loudspeaker in 70V installations, the corresponding
power ratings for the 100V position are reduced to half those indicated in the
connector terminals. In the case of 50V installations, they are reduced to a quarter.
The low impedance connector allows for setting the loudspeakers so that they
operate under these conditions, with a maximum power rating of 30W. In the event
of adopting this setting, the limitations of the amplifier must be taken into account
when connecting several loudspeakers to the output, especially if the impedance of
the unit falls below 4
Ω
. Furthermore, it is important for the connecting cable joining
the outputs on the amplifier and the loudspeakers is good quality and as short as
possible. This becomes particularly important when the distances to cover are
considerable and the loudspeaker impedance is low.
(*) Note: The loudspeaker distribution system on a 100V/70V line historically arose
from the technical need to mix loudspeakers with different impedances and/or
power ratings on the same line or amplification channel, all this without the need to
be concerned about the total impedance of the resulting whole. Additionally, this
system makes it possible, with minimum losses of impedance, to use long stretches
of cable and a slightly shorter section than that normally used in low impedance
installations.
ATTENTION!
If the system is accidentally connected to an amplifier with a low impedance
output, via the high impedance terminals (HI-Z INPUT connector), no damage
will occur to the loudspeaker, but it will operate far below its performance
features. In the event of accidentally connecting the loudspeaker to a low
impedance 100V network (LO-Z INPUT connector), this will seriously damage
it.