User Guide

Model฀74/75฀User฀Guide฀ Issue฀3,฀November฀2016฀
Studio฀Technologies,฀Inc.฀ Page฀17
for Surround
Procedure
This฀procedure฀will฀calibrate฀the฀surround฀
and฀stereo฀input฀channels.฀The฀trim฀pots฀
will฀be฀adjusted฀in฀groups฀corresponding฀฀
to฀their฀associated฀input฀sources.
1.฀ Begin฀by฀turning฀the฀audio฀amplifiers฀
or฀amplified฀speakers฀to฀their฀off฀state.฀
This฀will฀protect฀the฀loudspeakers฀and฀
the฀operator’s฀ears฀from฀possible฀฀
damage.
2.฀ Rotate฀the฀level฀control฀on฀the฀Model฀
75฀to฀the฀fully฀clockwise฀(maximum)฀
position.
3.฀ Using฀the฀Model฀75฀Control฀console,฀
select฀Surround฀A฀as฀the฀input฀source฀
and฀Speaker฀System฀A฀as฀the฀selected฀
monitor฀output.
4.฀ On฀the฀Model฀74,฀connect฀the฀audio฀
level฀meter฀to฀the฀left฀channel฀of฀moni-
tor฀output฀A.
5.฀ Confirm฀that฀the฀audio฀source’s฀left฀
channel฀is฀generating฀a฀steady฀signal฀
at฀precisely฀its฀reference฀level.
6.฀ Observing฀the฀level฀meter,฀adjust฀฀
Surround฀A,฀trim฀pot฀L,฀to฀give฀a฀pre-
cise฀+4฀dBu฀level฀at฀the฀left฀channel฀
output฀of฀monitor฀output฀A.
7.฀ Disconnect฀the฀level฀meter฀from฀the฀฀
left฀channel฀of฀the฀monitor฀output.
8.฀ Repeat฀steps฀4-7฀for฀the฀right,฀center,฀
LFE,฀left฀surround,฀and฀right฀surround฀
channels฀of฀Surround฀A.
9.฀ Repeat฀steps฀3-8฀for฀Surround฀B,฀
Stereo฀A,฀and฀Stereo฀B.฀Obviously,฀the฀
stereo฀inputs฀have฀only฀left฀and฀right฀
channels,฀requiring฀only฀that฀two฀trim฀
pots฀be฀adjusted฀for฀each.
10.฀After฀the฀calibration฀procedure฀has฀
been฀completed,฀rotate฀the฀level฀con-
trol฀on฀the฀Model฀75฀to฀the฀fully฀coun-
terclockwise฀(minimum)฀position.
11.฀After฀ensuring฀that฀the฀Model฀75’s฀level฀
control฀is฀set฀to฀minimum,฀return฀AC฀
mains฀power฀to฀the฀power฀amps฀or฀
amplified฀speakers.
Model฀75฀Operating฀Parameters
Many฀StudioComm฀functions฀can฀be฀con-
figured฀to฀meet฀the฀exact฀needs฀of฀your฀
installation.฀Here’s฀an฀overview฀of฀what฀you฀
can฀configure:
•฀ Input฀channels฀active
•฀ Speaker฀systems/monitor฀outputs
•฀ Talkback
•฀ Solo
•฀ Power-up฀mute฀all
•฀ Level฀control฀response
•฀ Level฀control฀audio฀mute฀all
•฀ Reference฀level
•฀ Remote฀input฀select
•฀ Dim฀level
•฀ Remote฀mute฀all
•฀ Remote฀dim
•฀ Remote฀talkback
•฀ Auto฀dim฀off
•฀ Talkback฀dim
•฀ Mono
The฀Model฀75฀configuration฀diagrams,฀
located฀at฀the฀end฀of฀this฀section,฀give฀
details฀on฀how฀each฀parameter฀is฀set.฀An฀
overview฀of฀each฀configurable฀parameter฀
฀
is฀provided฀in฀the฀following฀paragraphs.