User Guide

Issue฀3,฀November฀2016฀ Model฀74/75฀User฀Guide฀
Page฀36฀ Studio฀Technologies,฀Inc.฀
for Surround
To฀enable฀the฀bandpass฀filter฀feature฀
requires฀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฀
function.฀From฀that฀point฀forward,฀when-
ever฀the฀stereo฀to฀mono฀downmix฀function฀
is฀enabled฀the฀bandpass฀filter฀will฀also฀be฀
enabled.฀To฀indicate฀that฀the฀bandpass฀fil-
ter฀is฀enabled,฀the฀LED฀associated฀with฀the฀
downmix฀mono฀button฀will฀flash฀whenever฀
its฀associated฀function฀is฀enabled.฀To฀dis-
able฀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฀downmix฀function฀is฀
enabled.
Monitor฀Output฀Functions
Four฀buttons฀and฀one฀rotary฀control฀are฀
associated฀with฀the฀monitor฀output฀func-
tions.฀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,฀providing฀a฀visual฀display฀of฀the฀฀
active฀system.฀It’s฀important฀to฀remem-
ber฀that฀the฀performance฀of฀the฀speaker฀
systems฀is฀installation฀specific.฀Using฀the฀
Model฀75’s฀configuration฀choices,฀the฀
monitor฀output฀channels฀associated฀with฀
speaker฀system฀A฀and฀speaker฀system฀B฀
are฀selected.
Note฀that฀the฀Model฀75฀Control฀Console฀
can฀be฀configured฀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฀flash.
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฀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฀25฀dB,฀so฀one฀of฀those฀values฀will฀apply฀