Void Bias D1, Руководство пользователя

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Page 6
Location
Install your Bias 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.
Bias 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.
Bias 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 Bias D1 amplifier.
1x Phoenix MC 1,5/4-ST-3,81 - 1803594 plug
2x Phoenix MC 1,5/6-ST-3,81 - 5447900 plug
1x Phoenix PC 5/4-STF1-7,62 - 177859 plug
1x IEC power cord
1x User guide
OR
1x Bias Q1/Q2 amplifier.
1x Phoenix MC 1,5/4-ST-3,81 - 1803594 plug
2x Phoenix MC 1,5/12-ST-3,81 - 1803675 plug
1x Phoenix PC 5/8-STF1-7,62 - 177891 plug
1x IEC power cord
1x User guide
Preliminary operations
Signal Grounding
There is no ground switch or terminal on the Bias 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
Once properly powered (power cord inserted, sectioning
breaker closed), the system can be either ON or in
STANDBY mode depending on its state at latest power off.
In order to toggle the amplifier between ON and STANDBY
keep pressed the power button for 3 seconds. Please
consider that the operating condition can be modified by
the REMOTE ON and REMOTE OFF configuration.
Switching the amplifier On and Off
The Bias amplifiers can operate with different gain applied
to the input signal. This feature is designed to match the
voltage of the input signal.
A proper combination of the position of two GAIN switches
on the rear panel sets the operating gain of the amplifier
Gain selection
The Smart Rails Management technology implemented in the
power supply unit allows to reduce the power consumption
when the input signal falls under a defined threshold.
When On, Energy Save is active on each channel independently.
If the signal is missing for more than 30 minutes on all channels,
the auto standby is applied and the main PSU is turned off to
further save energy (
Time out time is selectable via Armonía in Dante™ Enabled Versions)
.
Normal operation is resumed in a matter of milliseconds when
an incoming signal is detected.
In order to activate the Energy Save feature, operate the NRG
SAVE dip switch on the rear panel.
Energy Save
Remote ON/OFF is available through the dedicated
terminals on the rear panel.
Both terminals respond to the differential voltage between
the contacts: a voltage difference in the range 5 V
DC
- 24 V
DC
triggers the control. Any voltage exceeding 28 V
DC
may
damage the input circuitry.
The couple of terminals act depending on the actual state
of the amplifier, in accordance with the following table.
REMOTE ON REMOTE OFF AMPLIFIER STATE
Vdiff ≥ 5V Any Force Turn ON
Vdiff < 3V Vdiff ≥ 5V Force Turn OFF
Vdiff < 3V Vdiff < 3V
No Change
(Keep either standby or in current state)
Remote On/Off
This feature may be activated when the power grid is unable to
provide enough current to continuously drive the loads, or when
the number of amplifier connected to the same outlet is such
that one can reach the critical power absorption of the line.
When activated, the Breaker Save halves the maximum
continuous current absorption from the mains. This slightly
reflects on the overall performance of the system, reducing the
available output power.
In order to activate the Breaker Save feature, locate the BRK
SAVE switch on the rear panel.
Breaker Save
The level of each channel can be remotely adjusted by means
of a linear 10 k
Ω
potentiometer connected to the input LEVEL
connector.
When the CH1 MSTR switch is in the OFF position the remote level
potentiometers work independently on each separate channel.
When the CH1 MSTR switch is in the ON position the remote level
potentiometer of channel 1 acts as a master level, controlling the
volume of both channels.
The remote level controls are in series with the level adjustment
knobs in the front panel.
Remote Level adjustment
Analog input connections are made via the Phoenix MC
1,5/6-ST-3,81 5447900 connector.
Analog Audio Input connections
Bias amplifiers implement an universal switching mode
power supply with power factor correction operating in the
range from 100 V
AC
up to 240 V
AC
±10%.
AC mains connection is in the rear panel through the IEC
C20 inlet, the approved power cord is provided.
AC Mains Supply