C O N T R O L S , C O N N E C T O R S & I N D I C AT O R S
PA G E 6
S Y N E R G Y 2 – O P E R AT I O N M A N U A L
11
8
10
13
8a
9
14
10a
12
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).
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 amplifi ers.
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 am-
plifi er) or stray magnetic fi eld pick up on the input
ground/shield wiring. (It does not interrupt signal
ground continuity on the strapping connector). The
amplifi er should be turned off before engaging this
switch!
Binding Post Outputs
Touch proof binding posts (banana jacks) are pro-
vided 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.
Speaker Output Connector
A 4 pole speaker connector is provided as an addi-
tional speaker output. This standard of loudspeak-
er-to-amplifi er connection allows access to both
channels of the amplifi er 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.
Mains
Connection
Your amplifi er is fi tted with either an internation-
ally recognised IEC mains inlet connector (SY2200,
SY2400) or has an internally connected mains lead
(SY2700)
Please ensure that the connecting mains lead for
use with the IEC connector is of an approved type
and is of suffi cient current carrying ability.
NOTE: Your unit must always be earthed!
Mains Fuse or Circuit Breaker
Either a 20mm x 5mm fuse drawer is provided
within the housing of the IEC mains connector
(SY2200, SY2400) or the amplifi er is fi tted with a
resettable circuit breaker (SY2700).
Fuse:
When you receive your amplifi er 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
amplifi er as well as reduce 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 the use of 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.
Bridge
Switch
Pushing this switch in engages the BRIDGED/
MONO mode of operation. In this mode your
amplifi er will only accept signal applied to channel
A’s input XLRs and the level of both channels will
be controlled by the channel A 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).
Limiter Switch
Pushing this switch in engages the clip limiter
circuitry. The threshold level is referenced to the
supply rail and the output voltage is sampled al-
lowing true clip detection and limiting.
Rear Panel
8
8a
9
10
10a
11
12
13
14