1. Manuals
  2. Brands
  3. Studio Technologies Manuals
  4. Music Equipment
  5. 78
  6. User manual

Studio Technologies 78 User Manual

Central controller and control console
Hide thumbs
Table of Contents

Advertisement

Quick Links

for Surround
Model 78 Central Controller and
Model 79 Control Console

User Guide

Issue 5, January 2004
This User Guide is applicable for systems consisting of:
Model 78: serial number M78-00151 and later;
Model 79: M79-00151 and later
© 2004 by Studio Technologies, Inc., all rights reserved
www.studio-tech.com
THX® pm3
50093-0104, Issue 5
approved

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 78 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Summary of Contents for Studio Technologies 78

  • Page 1: User Guide

    Issue 5, January 2004 This User Guide is applicable for systems consisting of: Model 78: serial number M78-00151 and later; Model 79: M79-00151 and later © 2004 by Studio Technologies, Inc., all rights reserved www.studio-tech.com THX® pm3 50093-0104, Issue 5...
  • Page 2 This page intentionally left blank.

  • Page 3: Table Of Contents

    Confi guration ..............13 Operation ..............27 Technical Notes ............31 Specifi cations ...............38 Appendix A ..............39 MIDI Messages ............40 Block Diagrams Model 78 Central Controller Model 79 Control Console Model 78/79 User Guide Issue 5, January 2004 Studio Technologies, Inc. Page 3...
  • Page 4 Surround This page intentionally left blank. Issue 5, January 2004 Model 78/79 User Guide Page 4 Studio Technologies, Inc.

  • Page 5: Introduction

    This User Guide is designed to assist you location. Using a single 9-pin cable, the when installing and using the Model 78 Model 79 connects to the Model 78 Central Central Controller and the Model 79 Controller. The Model 78 occupies just one Control Console.
  • Page 6 D-subminiature connector is used to con- system. The outputs are electronically bal- nect the Model 78 to the Model 79 Control anced and designed for connection to audio Console. A second 9-pin “D-sub” connector power amplifi...
  • Page 7 LEDs for selection of the surround specifi c needs of a facility or audio format. source to be monitored. While in most cases only one input source will be monitored at Model 78/79 User Guide Issue 5, January 2004 Studio Technologies, Inc. Page 7...
  • Page 8 (minimum) position. This is useful in ap- The Model 79 Control Console connects plications such as broadcast. By using the to, and is powered by, the Model 78 Central reference level function, the monitor output Controller. The Model 79 generates MIDI level can set to a preconfi...

  • Page 9: Installation

    Model 79 Control Console TASCAM® with their DA-88® product. Wir- and it will be connected to the Model 78. If ing harnesses prepared for connecting to required, external equipment will be inter- the surround inputs are identical to DA-88- faced to the remote control inputs.
  • Page 10 Unless there’s a special need, it may be cost and time effective for you to purchase commercially made cable harnesses. Let Notes: 1) Connector type on Model 78 is 25-pin D-subminiature the large market for DA-88-style cabling female. Installer must provide plug (male). Connector help you painlessly install your system! uses 4-40 threaded inserts for locking with mating plug.
  • Page 11 600 ohms or greater, the Model 79 Control Console. Conduc- the output level will drop slightly as the tors in the cable linking the Model 78 to the load impedance approaches 600 ohms. Model 79 route the remote control signals A 0.5 dB difference in output level can be...
  • Page 12 Remote Control Common are generally selected for 100 V, while our friends “down under” and in Europe Notes: 1) Connector type on Model 78 is 9-pin D-subminiature receive units set for 220/240 V. Before female. Installer must provide plug (male). Connector uses 4-40 threaded inserts for locking with mating plug.

  • Page 13: Confi Guration

    The data active 1. Begin by turning the audio amplifi ers LED on the Model 78 will briefl y light upon or amplifi ed speakers to their off state. completion of the Model 79’s power-up This will protect the loudspeakers and sequence.
  • Page 14 Model 79’s ar- left and back right input channels will get ray of buttons and LEDs no longer perform Issue 5, January 2004 Model 78/79 User Guide Page 14 Studio Technologies, Inc.
  • Page 15 50% of its “travel.” In the Model 78/79 User Guide Issue 5, January 2004 Studio Technologies, Inc. Page 15...
  • Page 16 Be certain that the refer- ed. The exact calibration procedure ence and dim functions are not active. Issue 5, January 2004 Model 78/79 User Guide Page 16 Studio Technologies, Inc.
  • Page 17 5 sec- be useful for general audio monitoring appli- onds before the selected value is stored. cations. Refer to the Technical Notes section Model 78/79 User Guide Issue 5, January 2004 Studio Technologies, Inc. Page 17...
  • Page 18 0.5 dB steps. The sub mute button will signal source. This is a hassle you may not increase the output level in 0.5 dB steps. need! Issue 5, January 2004 Model 78/79 User Guide Page 18 Studio Technologies, Inc.
  • Page 19 To prevent the level offset values from being accidentally changed, the main Model 79 confi guration mode should be entered and the view only mode selected. Model 78/79 User Guide Issue 5, January 2004 Studio Technologies, Inc. Page 19...
  • Page 20 Press and hold the confi guration button for 2 seconds to enter or exit the confi guration mode. These LEDs will light alternately when confi guration mode is active. Issue 5, January 2004 Model 78/79 User Guide Page 20 Studio Technologies, Inc.
  • Page 21 Then during normal operation this input cannot be selected, minimizing any confusion caused by selecting an invalid input source. Model 78/79 User Guide Issue 5, January 2004 Studio Technologies, Inc.
  • Page 22 Level control provides modifi ed logarithmic response. Output level offset view only. Level control auto mute all function enabled. Output level range mode 1, –70 to 0 dB. Issue 5, January 2004 Model 78/79 User Guide Page 22 Studio Technologies, Inc.
  • Page 23 The 5-second delay is a safety feature, ensuring that the reference level will not be accidently changed. To permanently store the new value, you must still exit the confi guration mode. Model 78/79 User Guide Issue 5, January 2004 Studio Technologies, Inc.
  • Page 24 Use the buttons to select the dim level. Default: 20 dB dim level. Remote mute all disabled. Remote dim disabled. Downmix stereo set to mode 1. Downmix mono set to mode 1. Issue 5, January 2004 Model 78/79 User Guide Page 24 Studio Technologies, Inc.
  • Page 25 LED Surround B lit means Surround B. Use the buttons to select the input. Default: Remote input select function disabled. Surround A associated with remote input select function. Model 78/79 User Guide Issue 5, January 2004 Studio Technologies, Inc. Page 25...
  • Page 26 Surround A associated with remote input select function. Output level offset 0 dB for all channels. Note: The 5-second delay is a safety feature, ensuring that the factory defaults will not be accidently restored. Issue 5, January 2004 Model 78/79 User Guide Page 26 Studio Technologies, Inc.

  • Page 27: Operation

    Model 78 Central Controller has been disabled. The Model 78’s front panel contains two To allow accurate monitoring of some LEDs. The power LED should be lit when- cinema formats, 10 dB of gain can be ever AC mains power is connected.
  • Page 28 The LED associated with mute all will rectly routed to the LFE channel! light whenever mute all is active. Note that Issue 5, January 2004 Model 78/79 User Guide Page 28 Studio Technologies, Inc.
  • Page 29 It’s hard to explain unless you’ve used button can be used to achieve a full moni- an audio console and experienced this tor output mute. Model 78/79 User Guide Issue 5, January 2004 Studio Technologies, Inc. Page 29...
  • Page 30 fl ash on and off, while the LEDs on the use the output mute function to indepen- non-soloed channels are not lit. dently mute the left and subwoofer output channels as desired. Issue 5, January 2004 Model 78/79 User Guide Page 30 Studio Technologies, Inc.

  • Page 31: Technical Notes

    While easy to install and use as confi gured have a slope of 12 dB/octave and are fac- at the factory, the Model 78 does provide a tory selected to have their –3 dB point at number of bass management parameters nominally 80 Hz.
  • Page 32 Note that in this case the seven main input channel high-pass fi lters should be set for fl at. Issue 5, January 2004 Model 78/79 User Guide Page 32 Studio Technologies, Inc.
  • Page 33 Figure 7. High-Pass Filters, Frequency versus SIP Resistor Value quency. The Model 78 makes this a simple task with no soldering or complicated Once the new SIP or 1%-tolerance resis- procedure required. Note that each of the tors have been procured, they should be seven high-pass fi...
  • Page 34 82 Hz: 13.7 k 33 Hz: 34.0 k input channel’s low-pass frequency be Figure 8. Low-Pass Filters, Frequency versus confi gured differently from its associated 1%-Tolerance Resistor Value Issue 5, January 2004 Model 78/79 User Guide Page 34 Studio Technologies, Inc.
  • Page 35 To control the monitor output level, the that the fi lter section’s output has its –6 dB Model 78 uses four digitally controlled ste- point at nominally 120 Hz. For some ap- reo level control integrated circuits. These...
  • Page 36 + BR) –10 dBV—substantially different from R = R + 0.707C + 0.707(SL + SR + BL –10 dBu (–10 dBV = –7.78 dBu). The dBV + BR) designation is simply a different way of C, SL, SR, BL, BR, and LFE mute...
  • Page 37 Remote Control Common 78 to/from 79 time when AC mains voltage is connected, Notes: 1) Connector types on Model 78 and Model 79 are disconnected, or has changed signifi cantly 9-pin D-subminiature female. Connectors use 4-40 from nominal. A combination of hardware threaded inserts for locking with mating plug.

  • Page 38: Specifi Cations

    Main Input Channel Low-Pass Filters: 7 Specifi cations Type: 2 order Sallen-Key; 12 dB/octave; fi eld confi gurable for disabled or 12 dB/octave Model 78 Central Controller response Response: –3 dB @ 80 Hz, nominal, General Audio: 12 dB/octave; fi eld confi gurable Frequency Response: 20 Hz-20 kHz ±0.2 dB...

  • Page 39: Appendix A

    Model 78 is capable of doing. Dimensions (Overall): By using standard MIDI messages, the 7.2 inches wide (18.3 cm) Model 78 can be used for a wide range of 2.2 inches high (5.6 cm) 5.4 inches deep (13.7 cm) special applications. Any device that can Weight: 1.9 pounds (0.9 kg)
  • Page 40 System-Exclusive Message Byte of Studio Tech ID Byte of Studio Tech ID Byte of Studio Tech ID Product ID (Model 78) Function, Reset to Power Up Default Confi guration EOX, End of System-Exclusive Message Notes: Action taken after message is received:...
  • Page 41 Description System-Exclusive Message Byte of Studio Tech ID Byte of Studio Tech ID Byte of Studio Tech ID Product ID (Model 78) Function, Input Source and Associated Channels Input Source, range 1-2: 1=Input A 2=Input B Input Channel Status Bit Map (sum values from all seven channels): Channel L: off=00;...
  • Page 42 System-Exclusive Message Byte of Studio Tech ID Byte of Studio Tech ID Byte of Studio Tech ID Product ID (Model 78) Function, Output Channel Relay Status Output Channel Relay Status Bit Map (sum values from all seven channels): Channel L: off=00; on=01 Channel R: off=00;...
  • Page 43 System-Exclusive Message Byte of Studio Tech ID Byte of Studio Tech ID Byte of Studio Tech ID Product ID (Model 78) Function, Output Level Channel L, Output Level, MSB, range 00-7F Channel L, Output Level, LSB, range 0-1 Channel R, Output Level, MSB, range 00-7F...
  • Page 44 Value Description System-Exclusive Message Byte of Studio Tech ID Byte of Studio Tech ID Byte of Studio Tech ID Product ID (Model 78) Function, Downmix Mode Downmix Mode, Range 0-6: 0=Downmix Off (Normal Operation) 1=Downmix 5.1 On 2=Downmix LCRS On...
  • Page 45 System-Exclusive Message Byte of Studio Tech ID Byte of Studio Tech ID Byte of Studio Tech ID Product ID (Model 78) Function, LFE Low-Pass Filter LFE Low-Pass Filter, Range 0-1: 0=Flat (low-pass fi lter not enabled) 1=Low-pass fi lter enabled...
  • Page 46 Surround This page intentionally left blank. Issue 5, January 2004 Model 78/79 User Guide Page 46 Studio Technologies, Inc.

This manual is also suitable for:

79Studiocomm 78Studiocomm 79

Table of Contents