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This device must be powered exclusively by
earth connected mains sockets in electrical
networks compliant to the IEC 364 or similar rules.
Coastal Source recommends plugging the
CRS Amplifier into a 20A rated breaker.
AC mains connections must be performed
only by professional or qualified personnel
according to local electrical authorities guidelines.
3 : 5.AC mains supply
CRS amplifiers implement a 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 (see Panel
N, p. 7). 3 : 6.Switch ON/OFF
Once properly powered (power cord inserted, sectioning
breaker closed), the system can be either ON or in STANDBY
mode depending on its state at last power off.
In order to toggle between ON and STANDBY press and
hold the power button for 3 seconds (see Panel C, p. 5).
Please consider that the operating condition can be modified
by the REMOTE ON and REMOTE OFF configuration (see
§3 : 9.Remote ON/OFF (standby mode).
3 : 7.Energy Save
The Smart Rails Management technology implemented
in the power supply unit allows it to reduce the power
consumption when the input signal falls under a defined
threshold.
Signal activity is monitored on the input section of the
amplifier so that the system can resume normal operation
in a matter of milliseconds when an incoming signal is
detected on the channels. Once switched 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*. Normal operation is
resumed in a matter of milliseconds when an incoming
signal is detected on the channels.
In order to activate the Energy Save feature, locate the
NRG SAVE switch on the rear panel (see Panel D, p. 5) and
set it ON (high).
TAB. 1 shows the power consumption in idle mode when
the Energy save is either enabled or disabled.
Energy
Save
115 V
AC
mains 230 V
AC
mains
Current
Real
Power
Apparent
Power
Current
Real
Power
Apparent
Power
CRS
2800/4
OFF
0.5 A 33.6 W 76 VA 0.35 A 33.7 W 145 VA
AUTOSTBY
0.47 A 20 W 55 VA 0.57 A 21 W 131 VA
CRS
1400 /4
OFF
0.45 A 32.7 W 70 VA 0.29 A 31.8 W 140 VA
AUTOSTBY
0.46 A 20 W 53 VA 0.46 A 20 W 106 VA
CRS
700/4
OFF
0.45 A 33.6 W 70 VA 0.29 A 32.8 W 140 VA
AUTOSTBY
0.46 A 20 W 53 VA 0.46 A 20 W 106 VA
TAB. 1: Idle consumption.
3 : 8.Breaker save
In case the power grid is unable to provide enough
current to continuously drive the loads, or when the number
of attached amplifier to the same AC mains is such that one
can reach the critical power absorption from the line, it is
possible to activate the Breaker Save feature.
When activated, the Breaker Save feature reduces
(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 (see Panel D, p. 5) and
set it ON (high).
3 : 9.Remote ON/OFF (standby mode)
Remote ON/OFF is available through the dedicated
terminals on the rear panel (see Panel D, p. 5).
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, as shown in .
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)
In order to remotely toggle between standard operating
and standby modes, the AC mains power must be
connected.
*Time out time is selectable via Armonìa in DSP+D Versions
FIG. 1: Press and hold the power button for 3
seconds to toggle between ON and STANDBY.
CRS | 13
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