Mute Switch
The channel may be muted or switched on without affecting the level set on the
channel fader. Red LED indicators show which channels are currently muted.
PFL Switch
When PFL (Pre Fade Listen) is activated a yellow LED illuminates above the button
on the channel strip and also in the master section. PFL allows you to monitor the
incoming source before it reaches the channel fader and the signal is sent to the main
output. It is normal to use PFL when setting the gain level for an incoming source.
Channel Fader
A lOOmm fader is located at the bottom of the channel, and sets the level of the
channel's signal being fed to the stereo mix bus. The fader provides up to lOdB of
gain at its highest point.
Drive and Peak LEDs
The yellow Drive LED provides a visual indication of the signal level through the
input valve stage, and therefore the extent of 'warming' or valve character being
introduced. The drive LED will gradually illuminate as the input level or gain is
increased, over the range +4dBu to + 12dBu. The red Peak LED operates as a
conventional warning that clipping is about to occur. The operating level of both input
and post fader stages is monitored, and the LED illuminates at a threshold of +19dBu,
when there is less than 7dB of headroom remaining to the direct output. Normal
operation would be to set the input gain so that the Drive LED is illuminating
regularly, with occasional illumination of the Peak LED occurring on loud transients.
Stereo Mix
A stereo lOOrnm fader controls the stereo mix output level.
Aux Masters
Each aux send features a rotary master level control, which governs the overall level
from the aux output. An associated PFL switch allows each aux send to be auditioned
in isolation, by placing the aux signal (pre the master level control) on the PFL buss.
The Aux master controls provide ample additional gain of up to + 15dB.
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