1. Fan - This internal fan provides vital cooling to
your SY-A4120. Make sure that both the front and
rear panels are kept free of all obstructions and
that cool, fresh air is accessible at all times. Also,
try to ensure that the Amplifier is used in a dust-
free environment.
2. Input connectors - Connect incoming signals
to these electronically balanced connectors. We
recommend the use of balanced three-conductor
cabling wherever possible (unbalanced two-
conductor signals can also be inserted into these
inputs, but you’ll get better signal quality and less
outside noise and hum if you use balanced lines).
The SZ Series accepts input levels of any strength
but needs at least 0 dBu to achieve maximum
power.
3. Link Output Connectors - Connect out going
signals from these jacks.
4. AC input - Connect the supplied heavy-gauge
3-pin “IEC” power cable here.
5. Euroblock Output connectors - Use these
to connect each channel of the SY-A4120 to
4-ohm or 8-ohm loudspeakers, or to one of the 70
and 100 volt outputs if you are using a constant
voltage system .
6. Channel input level controls - These
controls allow you to precisely adjust the
input level of the signal arriving at the
rear-panel input connectors. At their fully
counterclockwise position, the signal is
attenuated by -12 dB. At their fully clockwise
position, the signal is at unity gain (that is,
no attenuation). When 0dBu of signal arrives
at the input jacks and the Channel input
level controls are set to their fully clockwise
position, the Amplifier delivers full power
output.
7. High Pass filter - It can be allowed toggle on
and off the HPF.
WARNING!: Each of the amplifier channels can
run only one output configuration at the same
time. Operating amplifiers using 4 ohm and 70 or
100 volt concurrently may cause damage to the
amplifier or connected speakers, and may void
your warranty.
Rear Panel Controls
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