Studio Technologies 74 - Manual (Page 35)

Issue 2, January 2006 Model 74/75 User Guide
Page 36 Studio Technologies, Inc.
for Surround
To enable the bandpass fi lter feature re-
quires knowing a “secret” button push
method. But it’s not much of a secret, as you
simply press and hold the downmix mono
button for two seconds to enable the func-
tion. From that point forward, whenever the
stereo to mono downmix function is enabled
the bandpass fi lter will also be enabled. To
indicate that the bandpass fi lter is enabled,
the LED associated with the downmix mono
button will fl ash whenever its associated
function is enabled. To disable the bandpass
function, press and hold the downmix mono
button for two seconds. The change will be
indicated by the LED, which will now light
steadily whenever the stereo to mono down-
mix function is enabled.
Monitor Output Functions
Four buttons and one rotary control are as-
sociated with the monitor output functions.
The buttons control operation of the speaker
system selection, reference level, mute all,
and dim. The rotary level control is used to
manually set the monitor output level.
Speaker Systems
One button allows selection between speaker
system A and speaker system B. There are
two LEDs associated with the function, pro-
viding a visual display of the active system.
It’s important to remember that the perfor-
mance of the speaker systems is installation
specifi c. Using the Model 75’s confi guration
choices, the monitor output channels asso-
ciated with speaker system A and speaker
system B are selected.
Note that the Model 75 Control Console can
be confi gured to disable either of the monitor
outputs. If the monitor button is pressed and
nothing happens, this must be the case!
Reference Level
The reference level button, labeled Ref
Level, sets the monitor output level to a
preset value. This level is normally set
by a technician, using a sound pressure
level (SPL) meter, at the time of system
installation. The LED associated with the
reference level function lights whenever
the function is active. Whenever reference
level mode is active the rotary level control
is disabled.
The reference level LED also serves as a
calibration aid. If the reference level mode
is not active and the rotary level control
is set at precisely the same level as that
stored for the reference value, the refer-
ence level LED will fl ash.
Mute All
The mute all function is highly complicated
to operate—not! Pressing the mute all but-
ton causes the monitor outputs to mute.
The mute all button is always set to “latch”
the function on and off. The LED associat-
ed with the mute all button will light when-
ever mute all is active. Note that if mute all
is enabled via the remote mute all function,
the mute all LED will fl ash.
Dim
The dim function is quite self-explanatory.
Press the dim button to enable the dim
mode, which reduces the monitor output
level by a preset amount. The dim button
is always set to “latch” the function on and
off. Dim activity applies no matter whether
the monitor output level is being set by the
rotary control or the reference button. The
dim level can be confi gured for 10, 15, 20,
or 25 dB, so one of those values will apply
when dim is active. The LED associated
with the dim button will light whenever dim
is active.