Qsc PLD4.2 Owner's Manual

TD-000351-00-D 

— Figure 10 —

OUTPUT

HOME

MASTER
CONTROL

-10

-20

LIM

SEL

MUTE

A

1

SEL

MUTE

B

2

SEL

MUTE

C

3

SEL

MUTE

D

4

CLIP

SIG

INPUT

ENTER

EXIT

GAIN

• Rear 

power switch is off, the amplifi er is not 

operable. The power switch is the AC Mains 
disconnect.

•  The power button is not illuminated.
• Turn 

the 

power switch to on. The amplifi er enters the mode it was in 

when power was removed. The power button is illuminated based on 
the mode.

•  From Standby or Mute All modes, press and release the 

power button on the front panel.

•  The power button is illuminated blue.
•  The amplifi er is fully operable; audio can pass.

•  From Mute All or Run modes, press and hold the power 

button on the front panel for two to three seconds.

•  The power button illuminates solid red.
•  The front panel LCD is off.
•  The amplifi er is not operable; audio will not pass.

•  From the Run Mode, quickly press and release the power 

button.

•  The power button fl ashes red.
•  The outputs are muted and amplifi ers are off.
•  The front panel and DSP functionality are fully operable. Any changes 

you make are saved and take effect in the Run Mode.

•  Scrolls up/down and right/left to select menu items and 

parameters

• Adjusts 

parameters

•  Navigates into the menu structure
•  Enters the edit mode for adjusting parameters
•  Confi rms the changes you make

•  Navigates out of the menu structure and parameter selection.
•  In the edit mode, pressing EXIT reverts the value back to its prior 

state, and exits the edit mode.

•  If you are on the Home screen, pressing HOME displays the 

alternate Home screen.  Pressing HOME again returns you to the 
primary Home screen.

•  If you are on a navigation screen, pressing HOME takes you Home.  
•  If you are on an edit screen, pressing HOME will confi rm any value 

being edited and take you to the HOME screen.  

•  Pressing the GAIN button from any screen takes you to the 

output gain screen for the most recently accessed output channel.

•  Pressing GAIN again confi rms the gain change and returns to the 

screen you were on when you pressed GAIN.

•  Use these buttons to navigate between input channels or 

output channels.  For example, if you are adjusting output gain on 
channel A, pressing the channel B SEL button takes you to the gain 
adjustment for channel B.

•  These buttons change both INPUT and OUTPUT selection at the same 

time. For example, if you select OUTPUT A then switch to an Input 
screen, you are on Input 1.

•  The SEL buttons are active on any Input or Output screen as indicated 

by an illuminated SEL button, and a label in the upper right corner of 
the screen (Input 1-4 or Output 1-4).

•  The SEL buttons illuminate blue for output channels, and amber for 

input channels.

•  Use these buttons to mute the audio of the associated 

output channel.

•  When the output confi guration is changed, the MUTE buttons are 

engaged automatically. You must manually unmute the channels.

•  Illuminates red when the Limiter is engaged. 

•  Indicates the dB below maximum output level of the channel.

•  Illuminates red when the input signal is being clipped.

•  Illuminates blue when a signal greater than -40 dB is present.

ENTER

EXIT

HOME

GAIN

GAIN

SEL

SEL

MUTE

LIM

-10 & -20

CLIP

SIG