Allen&Heath 21 Series - Manual (Page 8)

5
PANEL CONTROLS
Input Channel
Place the mixer in front of you and familiarise yourself with the
various functions of the panel controls. Starting at the top of
an input channel the first control is:
a)
b)
c)
d)
f)
g)
GAIN
This control adjusts the sensitivity of the first amplificati
stage of the microphone/line input. Use this in conjunction
with the PFL function, as described in the OPERATION section,
on
to find the correct setting.
MIC-LINE
Selects the sensitivity and input impedance of the XLR input
socket to suit either microphone or line-level signals.
P A D
Reduces the sensitivity of the XLR input socket to enable
very high signal levels to be accommodated. Use if the gain
control has already been turned down fully and there is
still too much signal.
HF
-
Boosts or cuts the high frequency or treble content of an
incoming signal.
MID FREQ and MID
The first control selects the mid-range frequency to be cut
or boosted by the MID control.
LF
Boosts or cuts the low frequency or bass content of a signal.
Used to send a proportion of the signal present in the input
channel, via the cue master (see OUTPUT SECTION), to an external
destination. This auxiliary send derives its signal before
the channel fader and is thus unaffected by fader settings.
Designed to feed on-stage foldback monitor systems for PA use
or to feed headphone/loudspeaker systems in recording/broadcast
situations.
Can also be used as an effects send to feed ex-
ternal devices, providing it is remembered that the feed will
still be present when the channel fader is down.