Studio Technologies 68 V.1 - Manual (Page 30)

Issue 2, June 1999 Model 68/69 User Guide
Page 30 Studio Technologies, Inc.
for Surround
local L/R Bypass, reference level, mute all,
and dim. The rotary level control is used to
manually set the monitor output level.
Local L/R Bypass
Using the L/R Bypass function is quite
simple, just press the local L/R Bypass
button to enable it. Signals connected to
the left and right bypass inputs will be
routed to the left and right monitor outputs,
respectively; the center, left surround,
right surround, and subwoofer outputs will
mute. The local L/R Bypass button is
always set to “latch” the function on and
off. There are two LEDs associated with
the local L/R Bypass button. During nor-
mal operation the surround LED will be lit.
Whenever L/R Bypass is active the sur-
round LED will go out, and the L/R Bypass
LED will light. Note that if L/R Bypass is
enabled via the remote L/R Bypass func-
tion, the L/R Bypass LED will flash.
Remember that the Model 69 Control
Console can be configured to disable the
L/R Bypass 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 to a preset level.
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 func-
tion lights whenever the function is active.
When 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 flash.
Mute All
The mute all function is highly complicated
to operate—not! Pressing the mute all
button causes the monitor outputs to mute.
The mute all button is always set to “latch”
the function on and off. The LED associ-
ated with the mute all button will light
whenever mute all is active. Note that if
mute all is enabled via the remote mute
all function, the mute all LED will flash.
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 configured for 10, 15, 20,
or 25dB, so one of those values will apply
when dim is active. The LED associated
with the dim button will light whenever dim
is active. Note that if dim is enabled via the
remote dim function, the dim LED will
flash.
What’s not so self-explanatory is the auto-
dim-off function. Whenever dim is enabled
due to the dim button being pressed, and
reference mode is not active, changing the
rotary level control will automatically turn
off dim. The auto dim off function is a
unique attempt at protecting the aural
health of audio engineers. No longer will
there be a heart-stopping blast of audio
when the dim button is pressed, suppos-
edly to enable dim, but actually turning
dim off because it was already enabled.
It’s hard to explain unless you’ve used an