Channel Output Controls; Mute - Mackie SR40.8 Owner's Manual

Almost all other signals call for higher HPF
frequency points (at least 80Hz). With these
signals, there isn't much below 80Hz that you
want to hear, and filtering it out gives the low
stuff you do want much more definition.
With HPF, you can safely boost LOW EQ
and LOW-MID EQ. Many times bass shelving
EQ can really benefit voices. Trouble is, adding
LOW shelving EQalso boosts the infrasonic de-
bris: stage rumble, mic handling clunks, wind
noise, and breath pops. HPF removes all that
debris so you can boost the LOW EQ without
frying a woofer.

CHANNEL OUTPUT CONTROLS

Now that we've made it through the
Channel's input controls, we have a signal that
has been level-corrected, polarity-adjusted,
HPF-ized, and beautifully shaded with EQ. It's
ready to go out and meet the audience. The
Channel output controls offer many ways to
get this signal out of the console. Just to get a
handle on things, we'll stick to the basic tried-
and-true methods and leave the wild routing
schemes up to you.

MUTE

Point Before: EQ IN switch
, PRE switch (AUX 1–4)
Point After: Fader
Muting a Channel removes the signal from
these output paths: LEFT/RIGHT/CENTER
SUBS
(SUB 1–8 mixes)
mixes and
AUX SEND MASTERS
AFL Channel Meters. The INSERT SEND, PFL
SOLO, and PFL Meter paths are not affected.
Unlike the "latching" switches, which live
in an up-or-down position, the MUTE switch
is "momentary" — when you press it, it comes
right back up. Pressing the switch toggles the
electronic mute relay in the signal path's cir-
cuitry. If the Channel is muted, pressing the
switch un-mutes it, and vice versa. An LED
adjacent to the switch glows when a Channel
is muted.
The reason this switch is of the momentary
persuasion is to enable you to change mute
settings by other means, namely ULTRA
MUTE ™ . With ULTRA MUTE
different mute groups can be configured, en-
abling you to mute several signals at once. Not
only that, but you can automate the muting of
Channels (and other signal paths) via an ex-
ternal MIDI sequencer or the DATA
We'll discuss all this in excruciating detail
later on .
.
.
,
, AFL SOLO, and
™
, up to 100
port.
23
U
EQ
HI
12k
-15 +15
U
HI
MID
-15 +15
2.5k
700 6k FREQ
500 15k
U
LOW
MID
-15 +15
250
70 700 FREQ
45 3k
U
LOW
80Hz
-15 +15
HPF
150
EQ IN
220
75
45 350 FREQ
30 800
L R
PAN
40
MUTE
dB
5 1-2
3-4
U
5-6
5
7-8
CENTER
L-R
50
60
O O
SOLO