Cable Connections - Ecler essentials eCMP8 User Manual

6. CABLE CONNECTIONS

The eCMP8 and eCMP12 support high or low impedance operation. They have a
selector on the back with power options: 37,5 / 75 /150 W/ OFF / 8 Ω; 50 / 100 /200 W/
OFF / 8 Ω.
Note:
if the loudspeaker is used in installations at 70V, the corresponding powers for
the 100V position will be reduced to half of those indicated on the switch. In the case of
installations at 50V, to a quarter.
1. Power options in eCMP8 and eCMP12 respectively
The low impedance connection will allow the loudspeakers to be configured to work
under these conditions, with a maximum power of 150W for the eCMP8 or 300W for
the eCMP12. If you choose this configuration, you must take into account the limitations
of the amplifier when connecting multiple speakers to its output, especially if the
impedance of the set drops below 4. It is also important that the connection cable
between the amplifier outputs and the speakers be of good quality and as short as
possible; this is especially important when the distances to be covered are large and the
impedance of the speakers is low.
Note:
The 70/100V line speaker distribution system historically arose from the technical
need to mix loudspeakers of different impedances and/or powers on the same line or
amplifier channel, all without having to worry about the total impedance of the resulting
set. Additionally, this solution allows to use, with minimum power losses, long cable
runs and of a significantly lower section than the one usually used in the low impedance
installation.
WARNING!
If you accidentally connect the system with the selector in any of the 3,
70/100V positions to a low impedance amplifier it will not cause any damage to the
loudspeaker but it will perform well below its performance. If you accidentally connect
the loudspeaker to a 70/100V network in 8Ω position it will be severely damaged.
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