QSC Audio ISA 800T 사용자 설명서

The channel 1 and channel 2 inputs are connected together,
applying a 

single input signal to both channels of the amplifier. A

signal into any input jack will drive both channels.  Each
channel's low frequency filtering, clip limiting, and gain control
still function independently. Each channel drives its own speaker
load.

You can patch the input signal on to additional amplifiers (daisy
chain) by using any of the remaining input jacks. This feature
eliminates the need for “Y” cables.

When to use PARALLEL input configuration: Use parallel
mode when you need one signal to drive both channels; each
channel having its own control (gain, clip limiter, low-frequency
filter).

1- Set the DIP switches for PARALLEL mode (see facing page).

2- Connect the one input signal to any one input connector.

3- Connect the two speakers: one to CH1’s output terminals, one
to CH2’s output terminals.

Each input signal is sent to its respective channel.  Each channel
has independent low-frequency (subaudio) filtering, clip limiting,
gain control, and output connection.

When to use STEREO input configuration: Use stereo mode
for stereo sources (L-R inputs) and any other situation that
requires each channel to be completely separate from the other.

1- Set the DIP switches for stereo mode operation (see facing
page).

2- Connect the two input signals; one to CH1 and one to CH2
(XLR or terminal blocks)

3- Connect the two speakers; one to CH1’s output terminals, one
to CH2’s output terminals.