Studio Technologies 68A 2005 - Manual (Page 32)

Issue 2, January 2005 Model 68A/69A User Guide
Page 32 Studio Technologies, Inc.
for Surround
been confi gured for the mono-to-center
mode. For a detailed technical description
of the bandpass fi lter please refer to the
Technical Notes section of this guide.
To enable the bandpass fi lter feature
requires knowing a “secret” button push
method. But it’s not much of a secret,
as you simply press and hold the mono
button for two seconds to enable the
function. From that point forward, when-
ever mono is enabled the bandpass fi lter
will also be enabled. To indicate that the
bandpass fi lter is enabled, the LED as-
sociated with the mono button will fl ash
on and off whenever mono is enabled. To
disable the bandpass function, press and
hold the mono button for two seconds. The
change will be indicated by the LED, which
will now light steadily whenever the mono
function is enabled.
Monitor Output General
Functions
Four buttons and one rotary control are
associated with the monitor output func-
tions. The buttons control operation of
surround and stereo outputs, reference
level, mute all, and dim. The rotary level
control is used to manually set the monitor
output level.
Surround and Stereo Outputs
The surround/stereo function allows selec-
tion between two different loudspeaker
systems. When the surround output is
selected the six surround output channels
are active. The two channels associated
with the stereo output are muted. When
the stereo output is selected the left and
right channels associated with the stereo
output become active; the left and right
channels of the surround output mute.
In most cases surround output channels
center, left surround, right surround, and
LFE will also mute. However, a confi gur-
able parameter does allow these channels
to remain active when the stereo output is
selected. There are two LEDs associated
with the surround/stereo button, providing
a visual display of the active output.
Remember that the Model 69A Control
Console can be confi gured to disable the
surround/stereo button. If the button is
pressed and nothing happens, this must
be the case!
Reference Level
The reference level button, labeled REF,
sets the monitor output level to a preset
value. This level is normally set by a tech-
nician, 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 LED also serves as a cali-
bration 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 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.