40
O
O
MAX
O
O
MAX
O
O
MAX
ASSIGN
TALKBACK MIC
TALKBACK
AUX 1-4
MATRIX A
AUX 5-8
MATRIX B
EXTERNAL
MATRIX C
L/R
MATRIX D
INTERCOM
PHONES
SOLO LEVEL
LEVEL
TALKBACK LEVEL
ON
IGNORE
CALL
COMMUNICATIONS
OSCILLATOR
RECEIVE
400Hz
PINK NOISE
TALKBACK
CO
C
O S
O
O
MAX
O
O
MAX
ON
Point Before:
TALKBACK LEVEL
,
(
OSCILLATOR
)
LEVEL
.
Point After:
TALKBACK
switch.
Engaging this switch replaces the micro-
phone
TALKBACK
signals with an
OSCILLATOR
signal, either
400Hz
sine wave or
PINK NOISE
,
depending on the
400Hz/PINK NOISE
switch
position. Be aware that engaging this switch
turns the
OSCILLATOR
on, whether or not the
TALKBACK
switch is engaged.
With the
OSCILLATOR ON
switch disen-
gaged (up), both the
400Hz
and
PINK NOISE
generators are put to sleep to ensure that abso-
lutely no leakage from these generators will
appear at any of the SR40•8’s outputs. That's
why there's a short delay when you turn the
400Hz oscillator on, to allow the circuit to
ramp up and stabilize first. So please be polite
— do not disturb the oscillators when they’re
trying to sleep. The last thing you want during
your show is a cranky oscillator.
COMMUNICATIONS
If your system uses the Clear-Com
®
Intercom System, then you certainly have
chosen the right console — The SR40•8
provides a Clear-Com
®
-compatible interface.
Furthermore, the interface is transformer-
isolated to prevent any nasty ground loops
from showing up in the audio.
If you already have the Clear-Com
®
Inter-
com System, you probably already know how it
works, so we’ll just discuss how it affects the
engineer sitting behind an SR40•8.
INTERCOM
All you have to do is press this big switch
and you’ll be on a party line with all the other
Clear-Com
®
participants.
RECEIVE LEVEL
This adjusts the incoming level of the other
Clear-Com
®
participants. Simply set the knob
as desired.
IGNORE
When you want to remove all those voices
in your head, specifically the ones coming in
via the Clear-Com
®
system, press this switch
and your station will be effectively removed
from the party line.
This switch will be automatically defeated
when a
CALL
signal is received from another
Clear-Com
®
participant. Furthermore, if the
INTERCOM
switch is pressed,
IGNORE
will be
defeated for thirty seconds. To reengage
IGNORE
sooner, simply double-click the
IGNORE
switch.
CALL
Pressing this switch sends a visual alert sig-
nal to all other Clear-Com
®
participants. Their
systems’
CALL
LEDs will glow, urging them to
put their headphones back on.
If they try to call you, the
INTERCOM
switch glows and the
TALKBACK
switch
stops glowing. This also bypasses the
IGNORE
switch for as long as their
CALL
switch is
pressed. Tell your crew that they can talk to
you when their
CALL
button is pressed
(assuming you have your headphones on).
