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SZ Series Layout - Rear Panel
1: AC INPUT - Connect the supplied heavy-gauge 3-pin “IEC” power cable here.
2: DC 24V INPUT – A two circuit Euroblock socket is provided for connecting 24 volt emergency back-up
power.
3: CONSTANT VOLTAGE (output connector) - Use this Euroblock to connect the amplifier to one of the
25, 70 and 100 volt outputs if you are using a constant voltage system. See page 13 in this manual for more
information about wiring and interconnection instructions.
4: LOW-Z (output connector) - Use this Euroblock to connect the amplifier to a 4 ohm speaker. See page 13
in this manual for more information about wiring and interconnection instructions.
5: LEVEL ADJUST- This control knob provides input level adjustment from -12dB to 0dB.
6: HPF (HIGH PASS FILTER) – Selectable High Pass, or low cut, filter at 400Hz used when powering outdoor
announcement horn speakers.
7: INPUT – XLR connector for balanced line level input.
8: LINK – Female XLR connector for connecting additional amplifiers.
9: GROUND LIFT - Used to float the audio ground from the chassis ground.
10: Rear Vents – Used in combination with the internal fan and front vents to dispel warm air ensuring
reliable operation.
WARNING!: Each of the SZ Series amplifiers can run only one output configuration at the same time.
Operating SZ series amplifers using 4 ohm and 25, 70 or 100 volt concurrently may cause damage to
the amplifier or connected speakers, and may void your warranty.