Australian Monitor
Rear Panel
8 Balanced Input
A female 3-pin XLR type connector is provided on
each input:
Pin 1 = Signal Ground;
Pin 2 = Hot (non-inverting or in phase);
Pin 3 = Cold (inverting or reverse phase).
8a Signal Strapping
A male 3-pin XLR type connector is provided and
wired in parallel with the female input XLR for
strapping / looping signal between amplifiers.
9 Signal Ground Lift Switch
When this switch is engaged it disconnects signal
ground from the input connectors on both
channels. It is intended to be used when “hum” is
caused by earth loops (due to different ground
potentials between source equipment and the
amplifier) or stray magnetic field pick up on the
input ground/shield wiring. (It does not interrupt
signal ground continuity on the strapping
connector).
The amplifier should be turned off
before engaging this switch!
10 Binding Post Outputs
Touch proof binding posts (banana jacks) are
provided for speaker output termination with
banana plugs or bare wire. The red post is used
as
positive
and the black post is used as
negative
. For bridge connection use only the red
posts.
10a Speaker Output Connector
The 4 pole speaker connector is provided as an
additional speaker output. This emerging
standard of loudspeaker to amplifier connection
allows access to both channels of the amplifier
via the one connector for bi-amp applications.
Channel-A is considered the dominant channel
and has both channels wired to the speaker
connector. See the installation section of this
manual for detailed information on speaker
connector wiring.
11 Mains Connection
Your amplifier is fitted with either an
internationally recognised IEC mains inlet
connector (SY400, SY800, SY1200) or has a
internally connected mains lead (SY1600).
Please ensure that the connecting mains lead for
use with the IEC connector is of an approved type
and is of sufficient current carrying ability.
NOTE: Your unit must always be earthed!
12 Mains Fuse or Circuit Breaker
Either a 20mm x 5mm fuse drawer is provided
within the housing of the IEC mains connector
(SY400, SY800, SY1200) or the amplifier is fitted
with a resettable circuit breaker (SY1600).
Fuse:
When you recieve your amplifier it will have a
working fuse and a spare fuse inside the fuse
drawer. The drawer can only be opened once the
mains lead is removed from the connector. The
fuse is provided to protect both the mains and
your amplifier as well as reducing the degree of
damage if an internal fault exists.
When replacing the fuse, replace with an anti-
surge (slow blow) type of the current rating
indicated on the back panel above the fuse
holder.
Warranty does not cover a blown fuse or any
resulting damage due to an incorrect fuse rating
or type.
Breaker:
If the circuit breaker trips allow 3 mins for the
contacts to reset thermally before pushing the
reset button to reset it mechanically.
13 Bridge Switch
P u s h i n g t h i s s w i t c h
i n
e n g a g e s t h e
BRIDGED/MONO mode of operation. In this
mode your amplifier will only accept signal
applied to channel A’s input XLRs and the level of
both channels will be controlled by channel A’s
attenuator. The output from channel B will
automatically be of the opposite polarity
(reversed phase) and speaker termination should
be sourced from the red binding-post outputs.
Alternatively, the speaker could be connected to
poles 1+ & 2+ of the 4 pole speaker connector
(see Installation - Output Wiring on page 11).
14 Limiter Switch
Pushing this switch in engages the clip limiter
circuitry. The threshold level is reference to the
supply rail and the output voltage is sampled
allowing true clip detection and limiting.
Controls & Connectors 9
Figure 3 Rear Panel Layout
8 Controls & Connectors