powersoft Ottocanali 12K4, User Manual

Page: 6 / 36

6 | Ottocanali
Location
Install your Ottocanali Amplifier in well ventilated rack cabinets.
Secure both front and rear brackets to the rack.
Connect the AC Mains connector to a circuit breaker.
Install the amplifier far from EMF emitting devices.
Avoid placing the amplifier close to heat generating sources.
Cooling
The ventilation openings must not be impeded by any item, keep
a distance of at least 50 cm from the front and rear ventilation
openings of the amplifier.
Ottocanali implements a forced-air cooling system to maintain
constant operating temperatures. Air enters from the front panel,
exiting at the back of the amplifier.
The cooling system features variable-speed DC fans controlled by
the heat sink mounted sensors. This ensures that fan noise and
internal dust accumulation are kept to a minimum.
In the rare event of overheating, sensing circuits shut down
all channels until the amplifier cools down to a safe operating
temperature. Normal operation is resumed automatically without
the need for user intervention.
Ottocanali amplifiers can be stacked one on top of the other, leave
one rack unit empty every four to guarantee adequate air flow.
Cleaning
Use a dry cloth for cleaning the chassis and the front panel. Air filter
cleaning should be scheduled in accordance with the dust levels in
the amplifier’s operating environment.
In order to clean the vent filters remove the front cover by firmly
gripping the outermost silver panels and pull them outwards.
Use compressed air to remove the dust from filters, or wash it with
clean water (let the filter dry thoroughly before reinstalling them).
Package list
The box contains the following:
1x Ottocanali Series amplifier.
2x Phoenix MC 1,5/ 4-ST-3,81 - 1803594 plug
6x Phoenix MC 1,5/12-ST-3,81 - 1803675 plug
2x Phoenix PC 5/ 8-STF1-7,62 - 1777891 plug
1x IEC power cord
1x user guide
Preliminary operations
Signal Grounding
There is no ground switch or terminal on the Ottocanali Series
amplifiers. The unit’s signal grounding system is automatic. In order
to limit hum and/or interference entering the signal path, use
balanced input connections.
In the interests of safety, the unit MUST always operate with
electrical safety earth connected to the chassis via the dedicated
Protective Earth wire.
Connections
Ottocanali DSP+D amplifiers can be remotely controlled via an
Ethernet connection through a personal computer and ArmoníaPlus.
Powersoft recommend the use of Ethernet Cat5 straight through –
patch – cables with pin/pair assignments TIA/EIA-568-B, i.e. T568B..
Ethernet connection
Energy save capabilities can be activated for each channel pair. Four
DIP switches are located on the left hand side of the front panel:
in order to activate the Energy save mode for channel pair set the
switches in the bottom position.
When the Energy save mode is activate on a channel pair, the
Ottocanali enters a low power consumption idle state when no
signal activity is detected for more than 4 seconds. Normal operation
is resumed in a matter of milliseconds when an incoming signal is
detected on the channel pair.
In case a pilot tone is used for checking system integrity and line faults,
the Ottocanali amplifier would continuously detects a stationary
signal that prevents the the idle mode. In this condition the Energy
save will never activate.
Energy Save
Remote ON/OFF is available throurgh the proper terminals in the
rear panel: in non-DSP Ottocanali by switching 24 VDC ±10% voltage
(10 mA max) applied to the REM OFF connector, the amplifier can be
remotely toggle between standard operating and the standby modes.
• When a 24 VDC voltage is applied to REM OFF, the amplifier
switches to standby mode.
• When the 24 VDC voltage is removed from REM OFF, the amplifier
switches back on as per normal boot up operation.
In order to remotely toggle between standard operating and the
standby modes, the AC mains power must be active and the mains
button switched on.
Remote On/Off (standby mode)
Ottocanali Series amplifiers implements two analog input
connections per channel: LINE and AUX input. Input selection is
made via software or through the AUX SEL. IN switch.
Analog input is provided by means of four Phoenix MC 1,5/12-ST-3,81
1803675 connectors, two for LINE input (channels 1-to-4 and 5-to-8)
and two dedicated to the AUX input (channels 1-to-4 and 5-to-8).
AUX SEL. IN: Analog input selection
Ottocanali Series amplifiers can switch from analog LINE inputs to
AUX inputs when a constant voltage in the 12 VDC to 30 VDC range
is applied to the AUX SEL. IN connector.
When this voltage is removed from the AUX SEL. IN, the unit
switches back from AUX inputs to LINE inputs.
Analog Audio Input connections
Digital input is supported via Dante™ standard protocols in Dante
equipped devices.
In Ottocanali DSP+D amplifiers, Dante connectivity is supported via
two Ethernet ports located on the rightmost side of the rear panels.
Fast Ethernet (IEEE 802.3u, 100 Mbit/s) and Gigabit Ethernet (IEEE
802.3ab, 1 Gbit/s) network protocols are supported; Cat5e or Cat6
standard UTP twisted pair cables shall be used for connections up
to 100 meters (328 ft).
Ethernet cabling must comply to TIA/EIA-568-B and adopt the
T568B scheme pinout1.
Input selection and Backup policy
In Ottocanali DSP+D amplifiers it is possible to select among three
input signal sources per channel: analog (either LINE or AUX) and
two Dante streams (streams 1-to-8 and 9-to-16).
ArmoníaPlus provides an interface to select the proper input source
and manage input gain and delay of analog and digital sources, in
order to compensate transmission latency and levels.
Furthermore Ottocanali DSP+D amplifiers implement a backup policy
aimed to improve reliability against signal fault. By assigning a bus
priority to the three different input sources – analog and two Dante
streams – per channel, the system is able to automatically switch to a
reliable input connection in case of signal drop or pilot tone mismatch.
Digital Audio Input connections
Ottocanali Series amplifiers implement two universal redundant
switching mode power supplies operating in the range from 100
VAC up to 240 VAC ±10%.
AC mains connection is in the rear panel through the IEC C20 inlet,
the approved power cord is provided.
AC Mains Supply
EN
AUX SEL. IN and PWS OUT connector and wirings
PWS OUT: Built-in auxiliary power supply
The PWS OUT connector provides a 24VDC – symmetrical with
respect to ground (0.2 A max) – when enabled by the toggle switch
on the front panel.
By wiring the PWS OUT connector to the AUX SEL. IN as shown
below, the front panel PWS OUT switch is enabled to toggle between
analog LINE inputs and AUX inputs: this provides an additional
manual procedure to switch from analog LINE to AUX and vice versa.
2 3 4 5 6 7 8 1
PWS OUT
ENERGY
SAVE
ON
OFF
CH 1-2 CH 3-4 CH 5-6 CH 7-8
ON OFF
PWS OUT
switch
PWS OUT LINE input
AUX
input
OFF ACTIVE —
ON — ACTIVE
Manual procedure to switch from LINE to AUX.