QSC DPA4.2 User Manual page 12

Outputs
The DPA amplifi ers have four confi gurable outputs. You can set the power, combine outputs (bridged and parallel), and adjust the DSP for each
output. When the output confi guration of the amplifi er changes, the output terminals, controlled by relays, change accordingly. Use the diagrams
shown in Figure 15 thru Figure 23
Select the Output Confi guration
The fi rst step in confi guring your amplifi er is to select a Preset based on the loudspeakers being connected to the amplifi er. The Preset Name is
representative of the confi guration. You can select a factory preset, and then adjust the parameters as needed, then save the confi guration as a user-
defi ned preset. In addition, you can use the
the confi guration is changed, all four channels are automatically muted.
F1: A B C D
F7: ABC D
M ABC
WARNING!: When the AC Power is on, there is a potential of having dangerous voltage at the output terminals on the rear of
the amplifi er. Use caution not to touch these contacts. Turn off the AC Mains disconnect switch prior to making any connections.
IMPORTANT: QSC recommends that you connect jumpers between the output terminals where the terminals are the same points
electrically. When confi guring your amplifi er, there are going to be some loudspeaker connections that are noted as being "electrically
the same point". In
addition, you can connect one loudspeaker to each of the four output channel terminals, and the four loudspeakers are in parallel; in this
case you would not need to jumper the terminals. You can connect four loudspeakers to one channel's output terminals (i.e. T1 and T2),
and the four loudspeakers are in parallel; in this case you would want to jumper the terminals. In all of the examples below, the
"electrically the same" terminals are shown with jumpers installed.
1. Turn the AC Mains power switch on the back of the amplifi er to on. The amplifi er starts in the Run mode.
2. Press and release the front-panel power button. The button fl ashes red, the amplifi er is in Mute All mode.
3. Select the confi guration appropriate for your loudspeakers, using either Preset Recall, or the Preset Wizard.
The following is a list of confi gurations for 1, 2, 3, and 4-channel outputs. This is not an exhaustive list, but is intended to give you an idea of what is
available and how the outputs would be wired.
TD-000434-00-A
as a reference for wiring the loudspeakers.
"Preset Wizard" on page 16
M D
— Figure 14 —
Figure 15, all four channels are in parallel with the "electrically the same" terminals jumpered as recommended. In
to create presets from one of the basic channel combinations up. When
Current Preset Name
Selected Preset Name
Input Mixer
Frequency Range color
Output Confi guration
12
Input number Mid Frequency
Sub-woofer High-Frequency
Low-Frequency Full Full Range
Frequency Range Color Codes