User Guide

Issue฀3,฀November฀2016฀ Model฀74/75฀User฀Guide฀
Page฀44฀ Studio฀Technologies,฀Inc.฀
for Surround
Specifications
Model฀74฀Central฀Controller
General฀Audio:
Frequency฀Response:฀20฀Hz-20฀kHz฀±0.1฀dB฀
(down฀0.5฀dB฀@฀60฀kHz),฀monitor฀outputs
Distortion฀(THD+N):฀0.04%,฀measured฀at฀1฀kHz,฀
+4฀dBu,฀monitor฀outputs
S/N฀Ratio:฀87฀dB,฀ref฀+4฀dBu฀out,฀20฀Hz-20฀kHz,฀
monitor฀outputs
Crosstalk:฀78฀dB,฀typical,฀ref฀+4฀dBu฀in,฀฀
20฀Hz-20฀kHz,฀monitor฀outputs
Audio฀Inputs:฀16,฀organized฀as฀two฀6-channel฀“5.1”฀
inputs฀and฀two฀2-channel฀“stereo”฀inputs
Type:฀electronically฀balanced,฀compatible฀with฀฀
balanced฀or฀unbalanced฀sources
Impedance:฀24฀k฀ohms
Nominal฀Level:฀–12฀dBV฀to฀+6฀dBu,฀adjustable
Level฀Calibration:฀15-turn฀trim฀potentiometers
Monitor฀Outputs:฀2,฀6-channel
Type:฀electronically฀balanced,฀compatible฀with฀฀
balanced฀or฀unbalanced฀loads
Maximum฀Level:฀+27฀dBu฀into฀10฀k฀ohms,฀+26฀dBu฀
into฀600฀ohms
Talent฀Amplifier฀Output:
Compatibility:฀provides฀power฀and฀audio฀signals฀
for฀up฀to฀four฀Model฀35฀Talent฀Amplifiers
Type:฀DC฀power฀with฀two฀channels฀of฀unbalanced฀
audio
Connections:฀common฀on฀pin฀1,฀DC฀(+27฀volts฀
nominal,฀200฀milliamperes฀maximum)฀modulated฀
with฀channel฀1฀audio฀(–10฀dBu฀nominal)฀on฀pin฀2,฀
and฀channel฀2฀audio฀(–10฀dBu฀nominal)฀on฀pin฀3
Line-Level฀Cue฀Output:฀1,฀stereo
Nominal฀Level:฀+4฀dBu,฀nominal
Type:฀electronically฀balanced,฀capacitor-coupled,฀
intended฀to฀drive฀balanced฀or฀unbalanced฀loads฀of฀
600฀ohms฀or฀greater
Source฀Impedance:฀100฀ohms,฀nominal
Maximum฀Level:฀+20฀dBu฀into฀10฀k฀ohms
Line-Level฀Talkback฀Input:
Level:฀+4฀dBu,฀nominal
Type:฀electronically฀balanced
Impedance:฀24฀k฀ohms,฀nominal
Infrared฀Receiver฀Input:
Type:฀intended฀for฀use฀with฀industry-standard฀฀
receiver฀module;฀data฀rate฀650฀baud
Remote฀Control฀Inputs:฀4
Type:฀+5฀volts฀DC฀logic,฀activates฀on฀closure฀to฀
system฀common
Functions:฀mute,฀dim,฀talkback,฀input฀select
Downmix:
Functions:฀5.1฀to฀stereo,฀stereo฀to฀mono฀(mono-฀
to-left-and-right,฀mono-to-center)
5.1฀to฀Stereo:฀LS฀@฀–3฀dB฀summed฀with฀L;฀RS฀@฀
–3฀dB฀summed฀with฀R,฀C฀@฀–6฀dB฀summed฀with฀฀
L฀and฀R;฀LS,฀RS,฀and฀sub฀monitor฀outputs฀mute
Stereo฀to฀Mono฀(Mono-to-Left-and-Right):฀฀
L฀summed฀with฀R฀to฀L฀and฀R฀or฀L฀summed฀with฀R฀
to฀C;฀attenuation฀independently฀configurable;฀C,฀LS,฀
RS,฀and฀sub฀monitor฀outputs฀mute
Stereo฀to฀Mono฀(Mono-to-Center):฀L฀summed฀
with฀R฀to฀C;฀attenuation฀independently฀configurable;฀
L,฀R,฀LS,฀RS,฀and฀sub฀monitor฀outputs฀mute
Stereo฀to฀Mono฀(Mono-to-Center)฀Bandpass฀
Filter:
Response:฀–3฀dB฀@฀100฀Hz฀and฀5฀kHz,฀nominal,฀฀
12฀dB/octave฀
Connectors:
Audio:฀4,฀25-pin฀female฀D-subminiature฀(DE-25F)
Talent฀Amplifier฀Output:฀3-pin฀male฀XLR
To/From฀Model฀75:฀9-pin฀female฀D-subminiature฀
(DE-9F)
Remote฀Control฀Inputs:฀9-pin฀female฀D-subminia-
ture฀(DE-9F)
Infrared฀Receiver฀Input:฀3.5฀mm฀3-conductor฀jack
AC฀Mains:฀3-blade,฀IEC฀320฀C14-compatible฀
(mates฀with฀IEC฀320฀C13)
AC฀Mains฀Requirement:
100,฀120,฀or฀220/240฀V,฀±10%,฀factory฀configured,฀
50/60฀Hz,฀26฀watts฀maximum