7
201109/UA1214UG_v1.1
User Guide - JBL Professional
®
UniAmp Power Amplifier Module , Model 1214
The UniAmp 1214 incorporates a “universal” PSU,
and will operate on all 50/60 Hz AC mains voltages
from 100 V to 240 V.
The AC mains fuse is integrated into the internal
power supply and is not user replaceable.
The PowerCon
®
connectors are plugged and
unplugged as shown in the diagram below.
IMPortANt
– The PowerCon
®
connectors
should never be plugged or unplugged
when there is power on the connectors,
regardless of whether the amplifier is switched on
or not. ALWAYS ensure that the mains supply is
turned off at its source before inserting or removing
either PowerCon
®
.
Warning
– This apparatus is a Class I device and
must be connected to a mains socket outlet
that provides a safety ground connection.
Warning
– If the mains switch of the
UniAmp 1214 is not readily accessible after
installation to disconnect the unit when
necessary, the mains connection to the UniAmp 1214
should be easily accessible.
AUdIo CoNNECtIoNS
Two latching 3-pin XLR connectors are fitted for
audio interconnections. The Input connector (female)
is for connection of an audio input signal; the Link
connector (male) is hardwired to the input connector,
and facilitates easy connection to another amplifier in
an adjacent enclosure.
The UniAmp 1214’s audio input and output are
twin transformer-balanced, and are designed to
operate at a nominal level of 0 dBV. Balanced system
interconnection, using twin-and-screen microphone
cables is strongly recommended.
Wire the audio connectors as follows:
* Typical colours, may vary with cable make and type.
1.
3.
2.
2.
1.
PIN
CONNECT
COLOUR
1
Screen
Cable Screen
2
Hot (+)
Red*
3
Cold (-)
Black*
Plugging in
Unplugging
1
2
3
3
2
1