Tel 800 992 5013 / +1 508 234 6158
|
www.eaw.com
46
Passive Point Source
Application Guide
Mains Power Connection
UXA amplifiers incorporate a power factor
corrected universal power supply and can be used
with mains input voltage from 100V AC to 240V
AC, 50/60Hz. Use the mains cable supplied with
the amplifier.
UXA amplifiers have no mains power switch
and are operational as soon as mains power is
connected.
Ensure that all signal, GPIO and output
connections are made before connecting the
amplifier to mains power.
Input Connection
All UXA amplifier models provide four balanced or
unbalanced analog audio inputs and a stereo S/
PDIF digital audio input. Any input channel can
be routed to any output channel. Input routing
options can be configured via the amplifier network
interface. See
Section 5
of this manual.
Analog Inputs
UXA amplifier analog inputs are of line level format
with a default input sensitivity of +4dBu (full out
-
put voltage swing/sensitivity) in all output modes.
Input signal levels up to +24dBu can be handled
without input clipping. Input sensitivity options
can be set via the amplifier network interface. See
Section 5
of this manual.
Balanced input connections to the amplifiers are
made via male ‘Euro Block’ connectors. Connecting
cables to the supplied female input connectors is
illustrated in
Diagram 5b.
Unbalanced input connections to the amplifiers are
made via RCA phono sockets connected in parallel
with the balanced inputs.
Digital Inputs
UXA amplifiers S/PDIF stereo digital audio input
connections are made via a single RCA Phono
socket. The S/PDIF input is connected by default to
amplifier installation Zones A (left) and B (right).
Digital Outputs
UXA amplifier S/PDIF stereo digital audio output
connections are made via a single RCA Phono
socket. The S/PDIF output signal by default reflects
the input to amplifier installation Zones A and B
and is intended to be used for daisy-chaining UXA
amplifier.
Note: 75Ω RCA Phono cables specifically intended
for digital audio should always be used for S/PDIF
connections. Standard Phono cables can be used but
may not result in optimal performance.
Note: The S/PDIF output level is by default set at
-10dB to reduce the possibility of downstream input
clipping.
Output Connections
Output connections from the amplifiers are
achieved via male ‘Euro Block’ connectors.
Ensure that speaker connection polarity is correct
throughout the installation:
In the case of Lo-Z speaker connections, positive
(+) amplifier terminals should always be connected
to positive speaker terminals and negative (–)
amplifier terminals always connected to negative
speaker terminals.
In the case of Hi-Z speaker connections, the two
speaker cable conductors should be connected
between the positive (+) terminal of Output 1 and
the negative terminal (-) of Output 2,
and likewise for
Outputs 3 and 4.
Output mode options (Lo-Z or Hi-Z) can be
configured via the amplifier network interface.