A. Mains inlet: To connect the unit, via a mains lead, to the mains power supply.
B. Input jacks: Inputs to the amplifiers.
C. Output XLR's: For connection to loudspeaker.
Also on the back of the amplifier you will find:
F. Mains fuse: 12.5 HRC 20mm.
G. Earth Tie Switch: Couples or de-couples the chassis ground, to avoid ground loop
hum when racking these units.
H. Mono mode switch: For switching between mono and stereo modes.
I. Bridge Mode switch: For switching between normal and bridge mode.
INPUT CONNECTIONS
Connecting the input signals:- Input signals maybe connected to to the jack inputs of each
of the four channels. The signal may come from any suitable line level output, e.g., mixer
or another amplifier (link output). All input connections must use shielded/screened
cables.
DO NOT CONNECT WITH SPEAKER CABLES.
The inputs are electronically balanced for those who require this facility, with the tip of the
jack being 'hot' and the ring 'cold' or balanced line and the sleeve ground. However they
can be used unbalanced with standard mono jack plug.
A link jack input is provided on each input channel, so that any of the four channels can be
joined together or linked down to another power amplifier in the rack.
OUTPUT CONNECTIONS
Connecting the output signal:- Output connection to loudspeakers is made from the XLR
output of each channel. Typically on the XLR outputs Pin 1 is Ground, Pin 2 is 'Hot' & Pin
3 unused.
POWER CONNECTION
Connecting the mains lead:- Fit the female plug of a mains lead into the connection
socket on the amplifier and the male plug into a suitable mains supply socket.
3.
OPERATION
Your QPX1200 amplifier is now ready for use. Before attempting to operate it, however, it
is advisable to familiarise yourself with the functions of the controls and the significance of
the indications.
