Input channels
Reference Manual
30
Relationship between analog and digital gain while Gain
Compensation is on
If Gain Compensation is on, adjusting the analog gain by a specific amount will cause the
I/O device to output to the audio network a signal that is attenuated by the same amount.
Therefore, the signals on the audio network will maintain a constant corrected level in the
digital domain.
For example, assume that the analog gain value has been set to +30 dB and Gain
Compensation is now turned on. Under this condition, if you raise the analog gain value to
+45 dB, the level of the signal sent to the audio network will stay at +30 dB (that is, attenuated
by –15 dB).
If the FOH console and the monitoring console are sharing one I/O device, adjusting the
analog gain on the FOH console will not affect the input level on the monitoring console. The
signal in the audio network is maintained at a constant level, and therefore increasing the
analog gain as much as possible will lower the relative noise floor and improve the S/N ratio.
The gain of each signal input to the QL series unit will be adjusted by the digital gain
parameter of the QL series console.
However, please note that if the signal is distorted due to a high level of analog gain, you must
first turn the Gain Compensation function off, set the gain to an appropriate input level, and
then turn the function back on. If you try to lower the analog gain level while the Gain
Compensation function is on, the signal on the audio network will be amplified by the same
amount due to the Gain Compensation function, and the signal will remain distorted.
NOTE
You can perform this operation rapidly if you’ve assigned Gain Compensation on/off as the SET
BY SEL function to one of the USER DEFINED keys.
Sending the signal from an input channel to the
STEREO/MONO bus
The STEREO bus and MONO bus are used to send signals to the main speakers. There are
two ways to send signals to the STEREO bus or MONO bus: ST/MONO mode and LCR
mode. You can select the mode individually for each channel. These two modes differ as
follows.
ST/MONO mode
This mode sends signals from the input channel to the STEREO bus and to the MONO bus
independently.
• Signals sent from an input channel to the STEREO bus and to the MONO bus can be
switched on or off individually.
• The panning of a signal sent from an input channel to the STEREO bus L/R is controlled by
the TO ST PAN knob. (Signals sent to the MONO bus are not affected by this knob.)
• The left/right volume balance of a signal sent from an ST IN channel to the STEREO bus is
controlled by this knob.
If PAN/BALANCE mode is set to PAN, you will be able to adjust the pan position of signals
sent to the STEREO bus L/R individually (
LCR mode
This mode sends input channel signals to three buses (STEREO (L/R) and MONO (C))
simultaneously.
• Signals sent from an input channel to the STEREO bus and MONO bus will be switched on
or off collectively.
• The CSR (Center Side Ratio) knob specifies the level ratio between signals sent from an
input channel to the STEREO (L/R) bus and to the MONO (C) bus.
• The TO ST PAN knob/BALANCE knob specifies the level of signals sent from an input
channel to the STEREO (L/R) bus and MONO (C) bus.
NOTE
If you want to monitor the signal of the STEREO bus or MONO bus through headphones or
similar devices, press the MONITOR button in the Function Access Area to select “LCR” as the
monitor source before you continue with the following procedure.
