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4. OPERATION AND USAGE
4.1. Start up
When you operate the
POWER
switch (13) on the rear panel, the amplifier is supplied with power from the
electrical network and can be switched on, locally by holding down the front
POWER
key (6) or remotely (from the
application EclerNet Manager).
In a complete audio installation, it is important to start up the equipment in the following sequence: sound
sources, mixer, equalizers, active filters, processors and finally power amplifiers. To turn them off the sequence
should follow an inverse pattern.
4.2. Front panel LED indicators
NZA amplifiers are equipped with the following LEDs on their front panel:
SP
indicators (2): They indicate the presence of a signal in the amplifier inputs. These indicators light up when
the signal present in the input exceeds the threshold of –40 dB.
CLIP / PROTECT
indicators (4): (available only on models 4-180, 6-180, 4-400 and 4-700)
They light up for two possible reasons:
o
When the signal delivered to the speaker is close to the actual clipping level. The
CLIP
detection
system considers possible voltage fluctuations of power supply, always giving a real indication
even if they exist. It is normal for
CLIP
indicators to be lit at the bass frequencies rhythm for high
operating levels, as these frequencies have the higher energy content. You must take care that
these indicators do not permanently light up during normal operation of the equipment.
o
To indicate the absence of signal at the amplified output of the unit in the following cases:
During the startup process up to the end of the
STANDBY
time necessary to stabilize the
amplifier internal tensions, before being finally operational.
The equipment enters protection mode if it detects a low frequency signal that may
damage the speakers, excessive internal temperature, a short circuit at the amplified
output or a possible internal damage.
In any case, if these indicators permanently light up, it is a sign of malfunctioning and its
cause should be investigated.
CLIP indicators (3): (available only on models 4-70 and 6-70)
They light up when the signal delivered to the speakers is near clipping. The
CLIP
system considers
possible voltage fluctuations of power supply, always giving a real indication even if they exist. It is normal
for
CLIP
indicators to be lit at the bass frequencies rhythm for high operating levels, as these frequencies
have the higher energy content. You must take care that these indicators do not permanently light up
during normal operation of the equipment.
DATA
transfer indicator (5): blinks to indicate data transfer activity between the amplifier and the remote
control PC running EclerNet Manager application.
Note: all front panel LEDs blink when the "
Device Finder
" function is activated in EclerNet Manager
application. That’s useful for identifying a physical device from its virtual counterpart in this application.
Please refer to the EclerNet Manager software manual for more information.
