Australian Monitor SY800 - Manual (Page 14)

3. Installation
Power Requirements
Mounting
Cooling
Power consumption for your model of the Synergy
Series amplifier is indicated on the rear panel for
maximum output.
Ensure that mains voltage is the same as the
rear panel mains voltage marker (+/- 10%).
Your amplifier is designed for standard 19" rack
mounting and occupies 2 EIA rack units (3.5"). The
mounting centres are:
Vertical: 3.0" (76.2mm)
Horizontal: 18.2" (461.2mm) to 18.7" (473.8mm).
The slots in the mounting flange will accept bolt
diameters up to 1/4" (6.35mm).
We recommend that you provide additional support
for the amplifier, especially if road use is planned, as
the weight could bend some rack frames. This
support can be provided by secure shelving, support
rails or a rear rack mounting strip to match up with the
rear rack mount ears provided on your Synergy
Series amplifier.
Each channel of your Synergy Series amplifier is
cooled by an axial fan which draws cool air from the
front of the amplifier and expels the heated air out
the rear of the amplifier. These amplifiers offer two
speed fans which run at half speed, switching to full
speed when the internal heatsink temperature
exceeds 60 C (128 F).
. Any restriction of the
air flow will cause heat to build up within the unit and
possibly force the unit into its thermal shutdown
mode.
If the amplifiers are to be operated in an environment
where the airflow is restricted such as sealed racks,
the cooling should be supplemented by extra cooling
your
An unrestricted airflow into and out from the
amplifier must be provided
0 0
fans to evacuate the heated air and aid the flow of
cool air through the unit.
IMPORTANT
Do not directly connect pin 1 on the amplifier’s input
or strapping XLR, to the amplifier’s chassis, speaker
ground or power ground!
.
The input to your amplifier is a balanced 3-pin
configuration and requires all three pins to be
connected. Only high quality twin-core shielded
cable should be used.
When wiring for a balanced source, the connector
going to the input of your amplifier should be wired as
follows:
Pin 3 = COLD (Reverse Phase - inverting).
When wiring from an unbalanced source you
ensure that pin 3 is connected to pin 1 (input ground),
either by linking the pins in the input connector or by
the source equipment's output wiring.
When wiring for an unbalanced source:
Pin 3 = GROUND/SHIELD (joins to pin 1).
In-line XLR connectors often have a termination lug
that connects directly to the chassis of the connector.
Do
link this lug to pin 1 at the amplifier’s input as it
will defeat the amplifier’s input grounding scheme.
When wiring to your speakers always use the largest
gauge wire your connector will accept. The longer
the speaker lead, the greater the losses will be,
resulting in reduced power and less damping at the
load. We recommend using a heavy duty, two core
flex (four core flex if bi-amping) 10 to 12 gauge (2mm
to 2.5mm or 50/0.25 or equivalent) as a minimum.
Input Wiring
Output Wiring
NOTE
Input signal ground is not to be used as a safety
ground (earth)
must
NOTE:
not
Pin 1 = GROUND / SHIELD.
Pin 2 = HOT (In Phase - non inverting).
Pin 1 = GROUND/SHIELD
Pin 2 = HOT (in phase with the amplifier’s output),
2
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14 Installation