39
ASSIGN
Point Before:
TALKBACK
switch
Point After: (per switch):
AUX 1–4
,
AUX 5–8
,
EXTERNAL
,
L/R
,
MATRIX A
,
MATRIX B
,
MATRIX C
and
MATRIX D
.
Engage the switches for locations you want
to receive
TALKBACK
(or
OSCILLATOR
) sig-
nals. For instance, if your stage monitors are
being fed by
AUX SEND MASTERS 1
–
4
and you
want to talk to the talent, leave the
AUX 1
–
4
switch engaged, and toggle the
TALKBACK
switch on and off as needed.
You can use the
EXTERNAL
switch to de-
liver the
TALKBACK
(and
OSCILLATOR
)
signal to a second console, such as a monitor
console. Simply patch from the FOH (front-of-
house) console’s
TALKBACK
output to a
line-level Channel input of the monitor con-
sole. Then use that Channel’s aux sends to
deliver the
TALKBACK
signals to the stage
monitors.
OSCILLATOR SECTION
The SR40•8’s
TALKBACK
signal may be re-
placed by either of two on-board sound sources
— a
400Hz
sine wave for checking levels, or a
PINK NOISE
generator for quickly checking the
frequency response of your amp/speaker systems.
400HZ/PINK NOISE
Point Before:
400Hz
and
PINK NOISE
oscillators.
Point After:
LEVEL
(
OSCILLATOR
)
.
With the switch up (disengaged), the oscil-
lator delivers a
400Hz
sine wave, typically used
for calibrating and matching levels with exter-
nal devices. With the switch down (engaged),
it delivers a modified
PINK NOISE
.
PINK
NOISE
is used for performing quick frequency
response checks.
If your talent is performing that Beatles’
classic, “I Want You (She’s So Heavy),” you can
use the
PINK NOISE
along with the oscillator
LEVEL
control to emulate that horrendous
ocean sound that builds up and takes over
towards the end.
LEVEL
Point Before:
400HZ/PINK NOISE
switch.
Point After:
ON
(
OSCILLATOR
)
switch.
This controls the signal level of all
OSCIL-
LATOR
signals, be it the
400Hz
sine wave or
the
PINK NOISE
generator. The signal is off
when turned fully counterclockwise, with
plenty of gain turned fully clockwise.
In
400Hz
sine mode, you may want to send
out a calibrated level (via the
TALKBACK
ASSIGN
switches.) To do this, engage the ap-
propriate
ASSIGN
switch, then engage one
SOLO
switch in the selected circuit.
For instance, to calibrate while sending out
to
AUX SEND MASTER 1
–
4
, engage the
TALKBACK ASSIGN:
AUX 1–4
switch and then
engage
SOLO
on one (and only one) of those
AUX SEND MASTERS
. The
OSCILLATOR
level
appears on the
CENTER
(
PFL
) Meter.
Be aware:
This does not mean that all out-
puts delivering the sine wave are calibrated,
as their levels may be dependent on their
own master level controls. But it does mean
that the sine wave level is calibrated as it’s
fed to its
ASSIGN
switches.
The
PINK NOISE/400HZ
oscillator cannot be assigned
directly to the
CENTER
MAIN
output
. One easy
way to accomplish this is to
connect a patch cable between the
TALKBACK
OUT
jack on the rear panel and the left
input of one of the
MAIN AUX RETURNS
,
A1
for example. Press
EXTERNAL
in the
TALKBACK ASSIGN
section, and assign
AUX
RETURN A1
to the center channel. Alternatively,
AUX RETURN B4
can be used, since it is
specifically assigned to the center channel.
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
