Top Panel - PRESONUS Quantum ES Series Owner's Manual

3 Hardware Features
3.2

Top Panel

Clip LED - LED will illuminate red when the input signal reaches -0.5 dBFS. At this
level, the signal will begin to overload the analog-to-digital converters and exhibit
signs of clipping.
Input Meters - These meters indicate the input level of the analog inputs.
USB Status – The LED color shows if you are connected to a device via USB
(computer or mobile device).
Alternating red and blue LEDs indicates that Quantum ES is looking for a
•
device.
A solid blue LED indicates that Quantum ES is successfully connected to a
•
device.
A solid red LED indicates that Quantum ES did not detect a device to connect
•
to and is in standalone mode.
A blinking red LED indicates that Quantum ES will require additional power via
•
the "Aux" port on the back.
Channel Select Buttons - To control the gain level of a specific channel, press the
desired channel select button. Press the channel select button again or either the
Main or headphone buttons to exit Channel Edit mode.
When in Channel Edit mode:
Both the button and knob will turn white.
•
Turning the knob will control the gain level for the selected channel (see the
•
Stereo Linking section for info on controlling gain for linked channels).
Note: After 10 seconds of inactivity, the knob will switch back to either Monitor
Control or Headphone Control mode depending on the last used mode.
Illuminated Knob Position - The illuminated ring around the knob shows relative
knob position and changes color depending on the active mode. It shows the
current relative position of the knob for either main output, gain, or
headphone level.
Control Knob - Quantum ES uses a multipurpose, endless knob. This knob can be
used to control either main output, gain, or headphone level.
Speaker Control ("Main" Button) - Pressing the Main button will switch the knob to
control the main output level. This is the default mode for the knob and any other
mode, other than Headphone Control, will time out and return to Monitor Control.
Speaker Switching is available for Quantum ES 4 users. When Speaker Switching
is enabled in Universal Control, pressing the Main button will follow the toggle
behavior set in Universal Control. For example, pressing the Main button can toggle
between your main speakers and alternate speakers (A - B). For more on Speaker
Switching, check out section 5.5.
Headphone Control Button – Pressing the headphone control button will enable
knob control of the headphone output level (encoder will turn green). For the ES 2,
simply press the headphone button again to return to Speaker Control mode or just
press the Main button.
For the ES 4 users,
Press the headphone button once to control headphone 1; the number 1 will
•
light up blue.
Press the headphone button again to control headphone 2; the number 2 will
•
light up blue.
Quantum ES-Series
Owner's Manual
6