Installation; Location, Assembly, Ventilation; Mains Connection; Signal Input Connections - Ecler NZA Série Notice D'utilisation

3. INSTALLATION

3.1. Location, assembly, ventilation

The NZA amplifiers are 2 RU high 19'' rack modules.
It is very important not to enclose the amplifier or expose it to extreme temperatures as it generates heat.
It's also necessary to promote the passage of fresh air through the ventilation holes of the chassis, leaving
at least one rack unit (NZA4-700 (2)) off between each device and installed above and below it in the rack
frame.
If the setup has several amplifiers in the same rack or in a closed cabinet with doors, it is highly
recommended to supply them forced ventilation, installing fans at the upper and lower ends. This upward air flow
will help to dissipate the heat generated inside.
In order to optimize as much as possible the correct thermal dissipation of equipment installed in a closed
rack, it is advisable not to place power amplifiers under other appliances, but upon these ones.
All NZA amplifiers are supplied with plastic washers in order not to damage the rack ears when tightening
the screws.

3.2. Mains connection

The NZA amplifiers are fed with alternate currents, depending on the country, of 110-120, 220-240V
47/63Hz. (see characteristics in the back of the unit).
The mains cables must not be near the shielded cables carrying the audio signal, as this could cause
humming.

3.3. Signal input connections

NZA series rear panel provides analog, balanced, line level signal inputs. Selecting hardware inputs and
their routing to either amplifier channel is done from EclerNet Manager control application. Please refer to the
EclerNet Manager software manual for more information.
Signal input connectors are 3 position screw terminal block (7). The wiring is:
HOT or direct signal
COLD or inverted signal
GROUND
For unbalanced connection short-circuit pin ⊥
to pin -.
STACK outputs (8) available for inputs 1 and
2 are parallel to the input and serve to re-send the
signal of these inputs (INPUTS, CH1 / CH2) to other
input channels, amplifiers or sound systems.
The input impedance is 22KΩ (balanced). This impedance makes possible to parallel several amplifiers
without loosing audio quality.
> Pin +
> Pin -
Pin ⊥
>
5