QSC Audio CX168 user manual Setup Setting the Mode STEREO, PARALLEL, or Bridge, Modes

SETUP: SETTING THE MODE: STEREO, PARALLEL, OR BRIDGE

Modes

The following descriptions apply to a channel pair (such as Ch. 1 & 2 or Ch. 7 & 8). It is possible to set each channel pair’s mode differently and customize the system configuration. All possible combinations will not be shown. The following describes the behavior of one channel pair in the three modes of operation and the BRDG and PAR LED’s:

Stereo- Stereo mode supports two completely separate audio channels, usually referred to as ‘left’ and ‘right’. Stereo configurations have two separate input signals and two separate output signals.

Mode switch settings and LED indication for stereo mode operation.

BRDG and PAR indicators should not be illuminated when in stereo mode.

Parallel- Parallel mode applies one input signal to both channels. Both inputs of a channel pair are connected in parallel when the mode switch is set for parallel, therefore, connect only one input per channel pair when in parallel mode. The outputs are connected the same as stereo mode. Each speaker will be supplied the same signal, which is still controlled by that channel’s gain control.

Mode switch settings and LED indication for parallel mode operation. PAR indicator should be illuminated and BRDG indicator should not be illuminated when in parallel mode.

Bridge- Bridge mode combines the two channels of a pair (such as Ch. 3 & Ch. 4) into one higher- powered channel. Like parallel mode, both inputs of a channel pair are connected in parallel when the mode switch is set for parallel, therefore, connect only one input per channel pair when in bridge mode. There are 4 possible channel pairs that can be bridged on the CX168. They are Ch.1-2 Bridge, Ch. 3-4 Bridge, Ch. 5-6 Bridge, and Ch. 7-8 Bridge. Any pair or number of pairs can be independently configured in bridge mode. Use the first channel’s input and gain control when in bridge mode. The second channel’s gain control is non-operative and should be turned all the way down.

Mode switch settings and LED indication for parallel mode operation. BRDG indicator and PAR indicator should be illuminated when in bridge mode.

Note! Do not connect more than one input per channel pair when operating in parallel or bridge mode. However, in parallel or bridge mode, the unused input terminals may be used for daisy-chaining the input signal to other channels of the CX168 or to other amplifiers.

For pictorial description of operating modes, see Appendix.

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