Australian Monitor SY800 - Manual (Page 16)

4. Operation
IMPORTANT
All signal source equipment should be
adequately earthed. This not only
ensures
safety but everybody
else's as well. Faults can and do occur in
mains connected equipment where the chassis can
become “live” if it is not properly earthed. In these
instances, the fault in a “floating” (ungrounded) piece
of equipment will look for the shortest path to ground,
which could possibly be your amplifier's input. If the
fault current is large enough, it will destroy the input
to your amplifier and look for the next available path,
which
!
to your Synergy
Series amplifier, observe the following:
Ensure the mains voltage supply matches the
label on the rear panel of your amplifier (+/- 10%).
Ensure that the power switch is OFF.
Ensure that all system grounds (earth) are
connected from a common point. Avoid powering
equipment within a system from multiple power
sources that may be separated by large
distances.
Check the continuity of all interconnecting leads
to your amplifier; ensure that there are no open or
short circuited conductors.
Ensure that the power handling of your load
(speakers) can adequately cope with the power
output of the amplifier.
your Synergy Series amplifier,
ensure that:
- The attenuators are at the “OFF” position (fully
anticlockwise).
-
The GROUND LIFT Switch is not engaged
(should be in the “out” position).
-
The BRIDGE Switch is not engaged if you are not
running the amp in bridged mode.
REMEMBER
The amplifier should be the
piece of equipment
that you turn and the piece of equipment that
you turn .
We recommend turning the attenuators on your
amplifier
when turning the unit on.
When you power up your Synergy Series, your
your
may be you
Before making any connections
Before operating
last
on first
off
down
Powering Up
amplifier goes through an initialising period before it
will accept signal. The Inrush Current Suppression
(ICS) circuit is in operation for the first 0.5 seconds.
This limits the mains current, to prevent "nuisance-
tripping" of circuit breakers.
During this period you will hear a couple of relays
“click”, indicating mains is now directly applied to the
amplifier and the signal path is connected.
While the ICS circuit operates there is also a 30dB
mute on the signal input. After two seconds this mute
will release, allowing any applied signal to pass un-
attenuated.
When switching the amplifier off, a couple of
seconds before switching the amplifier on again.
This allows the ICS circuit to reset.
The normal operating position for the attenuator is
the max position (fully clockwise, no attenuation). In
this position the amplifier operates at full gain.
Turning the attenuator back (anticlockwise) reduces
the input sensitivity.
NOTE:
If full power output is required, you should operate
your amplifier with the front panel attenuator above
the half way (12o’clock) position, otherwise clipping
of the input circuitry and its resultant distortion will
occur before full output power is achieved.
Your amplifier is a linear device operating with a fixed
input to output voltage gain (less attenuation). The
maximum output voltage swing is determined by the
applied mains voltage, load, load type and the duty
cycle of the applied signal.
The for your Synergy Series
amplifier when the attenuator is at maximum position
(fully clockwise) is nominally:
+2.2dBu (1.0 volts in) for rated power into a 4 ohm
load.
Each channel of your Synergy Series amplifier has a
nominal balanced
of 20kOhms
(@1kHz) and should not present a difficult load for
any signal source.
Your signal source (i.e. the equipment feeding signal
to the amplifier) should have an
wait
input sensitivity
input impedance
output impedance
Level Matching
Sensitivity
16 Operation