USER MANUAL
iA480X
Power amplifier
06
Operation
INPUT FOR DC 24V POWER SUPPLY
This connector is designed to power up amplifier when the main power is un-
available. Use only 24V power supply or batteries and take attention to polarity
during the wiring. If both, AC and DC power are connected, amplifier will use
main AC power.
AMPLIFIERS OUTPUT
Use this connector to connect amplifier to the loudspeakers.
GROUND LIFT SWITCH
To eliminate a ground loop, set ground switch to FLOAT position and otherwise
to connect a ground to amplifiers chassis.
LINK OUTPUT
Connect outgoing audio signal from stereo RCA and Phoenix connectors to
additional amplifier. Input and link connectors are connected with each other
directly.
AMPLIFIERS OUTPUT
BALANCED PHOENIX AND STEREO RCA INPUT
Connect audio signal to electronically balanced phoenix connector or to stereo
RCA. Please note that the iA480X needs at least 0 dBu to achieve maximum
power.
INPUT GAIN CONTROL
This control allows 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 -80 dB. At their fully clockwise position, the signal is no
attenuated. When 0dBu of signal arrives at the input and the input level controls
are set to their fully clockwise position (0dBu), the Amplifier delivers full power.