powersoft Mezzo Serie Benutzerhandbuch Seite 5

Set-up and Operation
Power State
This amplifier does not have a power
automatically when AC power is connected and it will go to standby
mode if no signal is present for 25 minutes.
When an input signal exceeding -60dB relative to the level needed for
full power is applied, the amplifier will go back on within 2 seconds.
DSP and matrix configuration
The amplifier comprises a comprehensive
can be setup in two ways.
• Automatic - without the use of any app or software.
use the software
• Advanced
optimize the functionality.
Automatic configuration
This is a very easy way to configure the amplifier that doesn't require
any software. It is ideal if all you want is an amplifier with a flat
frequency response that can be monitored and, if it is an AD model, get
audio routed to it with third party software.
The automatic setup will set limiters so that a channel reaches the
maximum capacity of the power supply, with a 4 dBu balanced analog
input (or -6 dBFSfor Dante/AES67).This means that it also adjusts the
gain so that the amplifier has the gain needed for all channels. The
way to "assign power" is then simply done by adjusting the level of the
content to the different channels.
It will also set the high-pass filters automatically. The cutoff will be
selected so that frequencies below the resonance frequency, as well
as frequencies that saturate transformers in Hi-Z loudspeakers, will be
attenuated.
Note! Automatic configuration is only possible, and repeatable, when
no amplifier settings and parameters have been manually altered. In
the case of manual changes, it will still be possible to trigger the auto
configuration, but for verification and monitoring purposes only. The
new measured values will not be saved until settings and parameters
are set back to their initial values or a factory reset is done. In order to
restore Mezzo's factory default mode, start by unplugging the mains
cable. Press and hold the push button on the amplifier's rear panel and
reconnect the mains cable while still pressing the button. Wait for the
amplifier state LEDsto blink in red for three times and release.
Step 1 - Select the maximum voltage
STATUS O
SIGNAL
.10dBV
No channel will ever be assigned limiters that exceed the power of the
power supply. The main reason for selecting the maximum voltage is
to ensure that 25/70/100V loudspeakers will get the power selected
on their tapping, if a channel is using less power than it can deliver.
If the application is 25V or 70V, then there is a risk that the limiters
get set too high if the connected load isn't requiring full power. The
maximum voltage can be selected with short presses on the push
button on the amplifier's rear panel. The selected voltage will be
displayed as follows:
loov Max Peak Max RMS
70V
Voltage Voltage
LED
Unlit Lit 141.4 v 100 v
peak
Unlit
Lit 100 v 70.7 v
peak
rms
Lit 35.4 v 25 v
peak
Unlit Unlit Custom Settings
Please note that for low-impedance
switch. It will turn
range of functions
to set more parameters
OSW'TCHED
> 2sV
CTRL CTRL
CTRL
+ — 14 13 12 II 5V
Description
Also works in mixed IOOV and low impedance
configurations
Also works in mixed 70V and low impedanc
configurations
Also works in mixed 70V and low impedance
configurations
This can't be selected from the rear panel. Th
limiters have been set manually in the softwar
and can't be chan ed without a facto
loads, it is not necessary to select
Step 2 —Calibrate
on
Press the push button until the 'Signal' LED turns purple, and then
release it within 2 seconds. This will trigger an automatic impedance
measurement for each channel. This will be made at a level that is high
that
enough to properly measure an 8 ohm loudspeaker. If the impedance
is higher, the measurement might be deemed to be too noisy and will
then repeat itself automatically. Please note that it may generate an
and
SPLexceeding 95 dB if the loudspeakers are sensitive enough.
The impedance measurement will automatically set warning thresholds
for monitoring changes. It will also set the limiters so that the channel
can play as loud as the design and model allows, without distortion.
Step 3 - Select the Ethernet mode of operation (AD models)
Press the push button until the 'Network' LED turns purple, and then
release it within 2 seconds. This will reset the amplifier to auto-IP and
it will toggle the Ethernet mode and update the "Switched" indicator:
Unlit: The internal Ethernet switch is disabled
•
are not connected and the right port is then internally assigned
for Dante/AES67. The left port is only for control/monitoring
amplifier's DSP.
Lit: This is the default
•
switch is enabled => the two ports are connected and will both
work for for Dante/AES67and control/monitoring of the amplifier's
DSP.It means that only one Ethernet cable is necessary for control
and digital audio. It also means that the product can be inserted in
a daisy chain of other Gigabit Ethernet products as long as there is
enough bandwidth.
Step 4 - Routing and control via GPI
1/0 Routing - 4-ChanneI models
All 4-channel models allow straight 4-in/4-out
where analogue inputs labelled 1 and 2 are a summation of balanced
and unbalanced inputs. When using unbalanced inputs only, these
will get a 12dB boost so that normal unbalanced sources will deliver
enough level to drive the amplifier to full power. When using both
balanced and unbalanced inputs simultaneously, the latter will get a
further -30dB reduction, so that priority is given to balanced sources.
1/0 Routing - 2-ChanneI models
All 2-channel models have mixed two unbalanced inputs (labelled
1 and 2) and two balanced inputs (labelled 3 and 4), meaning that
balanced and unbalanced
1/0 Routing - Dante/AES67 (AD models)
In AD models, additional four Dante/AES67 inputs and outputs are
available. For these models, the source selection strategy is enabled
by default, with Dante/AES67 inputs having a higher priority over the
corresponding analogue inputs when audio signal is coming from
both source types simultaneously.
settings can be configured from ArmoniaPlus or a third-party
VCA Operation via GPIs
In 4-channel models, the four GPI terminals located on the amplifier's
rear panel can be connected to 10kOhm passive potentiometers
attenuate the output levels. Each GPI connector
rese
corresponds to one output channel (1, 2, 3, and 4 respectively).
In 2-channel models, the output levels of channels 1 and 2 can be
o
SIGNAL
CTRL
14 13 12 II 5V
.10 dBV
oswr
CTRL CTRL •
.10 dBV + — 14 13 12 II 5V "J
"switched mode". The internal
analogue routing,
sources can be used.
The source selection and priority
(II, 12, 13, and 14)
the two ports
the
Ethernet
API.
to