QSC Audio PL224A - Manual (Page 21)

INPUTS
Each channel has active balanced "Euro-style" terminal block and XLR jacks wired in parallel. The input impedance is 12 kOhm balanced or 6 kOhm unbalanced. Each channel's input
jacks are wired in parallel. Unused input jacks may be daisy-chained to additional amplifiers if desired.
Balanced connection is recommended. Balanced signals are less prone to AC hum, but unbalanced signals can be suitable for short cable runs. The signal source's output impedance
should be less than 600 Ohms to avoid high frequency loss in long cables.
Balanced inputs: Use the XLR or
the detachable terminal blocks.
Proper connection for balanced input
options are shown at right.
Unbalanced inputs: Connect the
unused side of the balanced input to
ground, as shown in the illustrations
for unbalanced connections, right.
XLR unbalanced • XLR asymêtrique •
unsymetrische XLR • XLR no
balanceado
Terminal block unbalanced • bloc
détachable asymêtrique • unsymetrische
Anschlußstecker • Entrada de bloque no
balanceado
XLR connection•Balanced•Symétrique•Symmetrisch•Balanceado
Terminal block balanced • bloc
détachable symêtrique • symetrische
Anschlußstecker • Entrada de bloque
balanceado
CONNECTIONS: INPUTS
jumper 1 to 3
shield
jumper
shield
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