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Back panel description
(1) Mains connectors
This is the mains input for the NXAMP4x1. The plug is a Powercon 20A for the 100 ~ 120
Volts model (ref. NXAMP4x1U) and a standard IEC 3 pin for the 220 Volts model (ref.
NXAMP4x1C). The amplifier requires high-power so that it can demand high current from
the AC service. Connections must be properly rated for reliable operation. See specification
parts for details.
(2) Balanced audio inputs with link
For each of the four analog audio inputs you will find an XLR3 female input connector, and
also an XLR3 male connector in parallel for sending back the input signal to another unit.
(3) Expansion slot
This slot is used for extra audio inputs and remote control. See further in the manual for
details about the available options.
(4) Power outputs
Use Neutrik NL4 cable plug into these ports for safely connecting the power amplifier
outputs to the cabinets.
(5) RS-232 port
Through this serial port, you can upload a new firmware into the NXAMP from a computer.
New firmware adds new functionalities and new cabinets’ setups. Details about the update
procedure are given further in this manual.
(6) GPIO port
This GPIO port is used for interfacing the amplifier to security system, or to allow a basic
remote control of the unit. (N.B.: GPIO not yet implemented in current firmware release).
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