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DRAWMER
An additional benefit is derived when using a sub-bass. If the sub-bass is attached
to the
SUB/MONO
(Speaker 3) output on the rear of the MC7.1, speakers 1 and 2
could deliver the higher frequencies and allow for A/B (or in this case 1+Sub/
2+Sub) comparisons between the two monitor setups by pressing the Speaker 1
and Speaker 2 switches simultaneously and leaving SUB always active. In addition,
a full frequency range monitor could be attached to Speaker 2, so, with the Speaker
2 switch active SUB should be disengaged.
Note that all 11 speaker outputs have individual level trimming on the base of the
unit so that precise monitor level matching can be achieved - see
(14)
and also the
‘Monitor Calibration’
section.
MASTER OUTPUT
The Monitor Volume control adjusts the signal level of all the channels for all
speaker outputs with a range from Off (-infinity) to +6dB of gain. The Volume knob
affects the volume of the monitors only and does not have a bearing on any other
output such as the headphones or talkback jack.
A secondary preset
volume control on the
front edge provides a
repeatable calibrated
output level for the
monitors, so that at the
press of the switch just
below the main volume
knob the engineer can
hear the mix at the same
predetermined volume,
time after time, without
having to meticulously
adjust controls. Once the
system is calibrated
(see chapter entitled
Monitor Calibration) the
predetermined level could be set via a screwdriver to the maximum listening level,
85dB in the case of TV, film and music, for example, or to a standard listening level
for radio, or even a preferred level for quiet passage. The level chosen is at the
discretion of the operator. Both the volume knob and preset control circuit designs
incorporate identical potentiometers for excellent channel matching and a smooth
feel.
Because the circuitry is active it allows for the signal level to be increased, rather
than only attenuated, making subtle problems within the mix (such as noise at low
levels, or unwanted harmonics, for example) more obvious and easier to iron out,
especially during dialogue or musical passages that would normally be quiet.
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