Operation Manual

38 Control 2802 Operating Manual
Monitor Section
Left Channel Polarity Invert
Press and hold this switch to invert the polarity (phase) of the
left monitor channel. The switch is momentary to ensure that it
is not left on by accident!
It can be used together with the MONO switch (13) to check for
out of phase stereo content (see below).
Monitor MONO Sum
This switch sums the left and right monitor channels to produce
a mono output.
This feature is very useful to check for out of phase stereo
content (especially at low frequencies) and ensure the mono
playback compatibility of your mix. Select MONO, and if your
mix sounds thin, or certain frequencies “disappear”, then press
and hold the polarity invert switch (12). This creates a L-R sum
instead of L+R. If the mix problems are corrected, then some of
your stereo sources, or the mix itself, may be out of phase.
The MONO switch is also useful when positioning stereo
microphones. With the two microphones connected and
panned L/R to the mix, select MONO. Now adjust the position
of each microphone to get the best tonal balance. This should
minimise phase cancellation once you switch back into stereo.
CUT L and CUT R –
These switches mute the individual left
and right monitor channels - perfect for
checking a mono sum on a single
speaker.
This is often the most accurate method of checking a mono
source, as it minimises phase cancellation in the listening
environment.
Monitor DIM
Press this switch to dim the monitor output.
The amount of dim is set by the DIM LEVEL
control (11).
Note that DIM is engaged automatically by the
TALKBACK switch. This is to prevent “howl-round” when using
the talkback communication system, see page 39.
Monitor CUT
Press this switch to mute the monitor output.
This is a global cut that disconnects both the
main and alternate loudspeaker outputs.
Alt. Speaker Select & Output Trim –
A second set of loudspeakers may be connected to the
alternate outputs (ALT SPKR L/R). Applications include
neareld or mini “grot-box” monitors.
Use the ALT SPKR switch (19) to mute the main speaker
outputs (MAIN SPKR L/R) and feed the monitor output to the
alternate outputs (ALT SPKR L/R).
Use the level control (18) to trim the alternate speaker level.
This can be used to match levels between the speaker sets.
Overall volume is still determined by the monitor VOLUME
control (10).
Headphone Output –
A high quality stereo headphone output is available on the rear
connector panel:
On the front panel, use the ON switch (22) to activate the
headphone output.
Use the PHONES level control (20) to adjust the listening level.
You will nd plenty of level available, enough to drive most
studio headphones to a sufciently loud SPL level.
By default, the headphone output is fed from the monitor
section. Thus, the source is selected by the MIX/SRC switch
(9) and MONITOR SOURCE selector panel (1 to 6).
Alternatively, you can monitor the cue output, by engaging the
the CUE/FB TO PHONES switch (21) - great for auditioning
what the artist is hearing. Note that this selects the cue output
(after the CUE/FB source selector), and therefore may be the
sum of several cue sources. See page 35 for details.