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StudioComm 68A User Manual

Central controller and control console
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for Surround
Model 68A Central Controller and
Model 69A Control Console
User Guide
Issue 2, January 2005
This User Guide is applicable for systems consisting of:
Model 68A: serial number M68A-00501 and later;
Model 69A: M69A-00742 and later
© 2005 by Studio Technologies, Inc., all rights reserved
www.studio-tech.com
50091-0105, Issue 2

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Summary of Contents for StudioComm 68A

  • Page 1 Model 69A Control Console User Guide Issue 2, January 2005 This User Guide is applicable for systems consisting of: Model 68A: serial number M68A-00501 and later; Model 69A: M69A-00742 and later © 2005 by Studio Technologies, Inc., all rights reserved www.studio-tech.com...

  • Page 2: Table Of Contents

    Operation ..............30 Technical Notes ............34 Specifi cations ............... 38 Appendix A ..............39 MIDI Messages ............40 Block Diagrams Model 68A Central Controller Model 69A Control Console Model 68A/69A User Guide Issue 2, January 2005 Studio Technologies, Inc. Page 3...
  • Page 3 Surround This page intentionally left blank. Issue 2, January 2005 Model 68A/69A User Guide Page 4 Studio Technologies, Inc.

  • Page 4: Foreword

    Surround Foreword Simply stated: I had a blast working on the StudioComm for Surround components! It was very rewarding to develop a set of products for a market that’s actually receptive to new ideas and supportive of innovation. A big thanks to Jeff Levison of DTS. He patiently answered my questions over a period of many months, helping to guide me in the right direction.
  • Page 5 Surround This page intentionally left blank. Issue 2, January 2005 Model 68A/69A User Guide Page 6 Studio Technologies, Inc.

  • Page 6: Introduction

    A 9-pin D-sub connector is used sources becomes imperative for more and to connect the Model 68A to a Model 69A more facilities. Studio Technologies has Control Console. A second 9-pin D-sub...
  • Page 7 fi xed dB for “soloing.” Figure 1. Model 68A Central Controller Front Panel Input 1 – Input 2 – Input 3 –...
  • Page 8 A Model 69A Control Console connects output. The downmix and mono functions to the Model 68A Central Controller using can be enabled at the same time, allowing a standard 9-pin D-sub cable. Power for...

  • Page 9: Installation

    The Model 68A Central Controller requires The designers of the StudioComm Models one space in a standard 19-inch (48.3 cm) 68A and 69A made the decision to assign equipment rack. Select a location that is the audio channels in the order of left,...
  • Page 10 STEREO A-R ing to the surround and stereo inputs are identical to DA-88-style input harnesses. Notes: 1) Connector type on Model 68A is 25-pin D-subminiature female. Installer must provide plug (male). Connector A wiring harness prepared for the monitor uses 4-40 threaded inserts for locking with mating plug.
  • Page 11 It is highly recommended that at least one of the surround inputs be wired by way Notes: 1) Connector type on Model 68A is 25-pin D-subminiature female. Installer must provide plug (male). Connector of an audio patch bay. This will allow the uses 4-40 threaded inserts for locking with mating plug.
  • Page 12 Remote Control Common Japan must be selected for 100 V, while our friends “down under” and in Europe Notes: 1) Connector type on Model 68A 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 LED on to their associated input sources. the Model 68A will briefl y light upon completion of the Model 69A’s power-up 1. Begin by turning the audio amplifi ers sequence.
  • Page 14 Surround as the selected monitor you can confi gure: output. • Input channels active 4. On the Model 68A, connect the audio • Stereo output level meter to the left channel of the surround monitor output. • Solo mode 5.
  • Page 15 The design fault, it was implemented this way confi guration data is stored in non-volatile because the StudioComm system allows memory, which is rated for thousands of multiple inputs to be simultaneously select- read and write cycles and a retention time ed for monitoring;...
  • Page 16 The additive solo mode is the the level control’s travel. When confi gured default setting. for the modifi ed log mode, normal listening may require the level control to be set to Model 68A/69A User Guide Issue 2, January 2005 Studio Technologies, Inc. Page 17...
  • Page 17 Surround the 11- or 12-o’clock position. The modi- 2. Place the StudioComm system in the fi ed log mode more closely matches the normal operating mode, not the confi g- monitor level control performance found uration mode. Be certain that the refer- in many audio consoles.
  • Page 18 This remote control input is reserved for To meet the needs of the operator and future use. Enabling or disabling this input specifi c program content, an attenuation will not impact system performance. Model 68A/69A User Guide Issue 2, January 2005 Studio Technologies, Inc. Page 19...
  • Page 19 SPL meter and a calibrated signal source. This is a hassle you may not need! Issue 2, January 2005 Model 68A/69A User Guide Page 20 Studio Technologies, Inc.
  • 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. Model 68A/69A User Guide Issue 2, January 2005 Studio Technologies, Inc. Page 21...
  • Page 21 Then during normal operation this input cannot be selected, minimizing any confusion caused by selecting an invalid input source. Issue 2, January 2005 Model 68A/69A User Guide Page 22 Studio Technologies, Inc.
  • Page 22 Use the button to change the confi guration. Default: Stereo output can be enabled. Surround output channels C, LS, RS, and LFE not active when stereo output enabled. Model 68A/69A User Guide Issue 2, January 2005 Studio Technologies, Inc. Page 23...
  • Page 23 Default: Additive solo mode enabled. Upon power up, mute all function enabled. Level control provides modifi ed logarithmic response. Level control auto mute all function enabled. Issue 2, January 2005 Model 68A/69A User Guide Page 24 Studio Technologies, Inc.
  • Page 24 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 68A/69A User Guide Issue 2, January 2005 Studio Technologies, Inc.
  • Page 25 LED Stereo B lit means Stereo B. Use the buttons to select the input. Default: Remote input select function disabled. Surround A associated with remote input select function. Issue 2, January 2005 Model 68A/69A User Guide Page 26 Studio Technologies, Inc.
  • Page 26 Use the buttons to select the dim level. Default: 20 dB dim level. Remote mute all disabled. Remote dim disabled. Spare remote input disabled. Auto dim off enabled. Model 68A/69A User Guide Issue 2, January 2005 Studio Technologies, Inc. Page 27...
  • Page 27 LED Stereo B lit means 0 dB. Use the buttons to select the attenuation level. Default: Mono mode: mono-to-center. 3 dB attenuation when mono is active. Downmix automatically activated when mono activated. Issue 2, January 2005 Model 68A/69A User Guide Page 28 Studio Technologies, Inc.
  • Page 28 3 dB attenuation when mono active. Downmix activated when mono activated. Note: The 5-second delay is a safety feature, ensuring that the factory defaults will not be accidently restored. Model 68A/69A User Guide Issue 2, January 2005 Studio Technologies, Inc. Page 29...

  • Page 29: Operation

    Model 68A Central Controller specifi cally for fi lm-post applications where it’s important to be able to change quickly The Model 68A’s front panel contains two between a combination of inputs, such as LEDs. The power LED should be lit when- two “stems,”...
  • Page 30 To highlight for clarity, the bandpass fi lter the result to both the left and right monitor is only available for use when mono has output channels. This method is the same Model 68A/69A User Guide Issue 2, January 2005 Studio Technologies, Inc. Page 31...
  • Page 31 LED will fl ash. output become active; the left and right channels of the surround output mute. Issue 2, January 2005 Model 68A/69A User Guide Page 32 Studio Technologies, Inc.
  • Page 32 LEDs on the non-soloed quiet output when the level control is set channels are not lit. to its minimum position. Model 68A/69A User Guide Issue 2, January 2005 Studio Technologies, Inc. Page 33...

  • Page 33: Technical Notes

    5 kHz. For a detailed description of the select will fl ash, while the LEDs associated fi lters, refer to page 5 of the Model 68A with any other active inputs will remain schematic diagram. It is available upon steadily lit.
  • Page 34 A simple formula is used to determine the each identical in value. A 6-position sock- resistance required for a specifi c fi lter et, located on the Model 68A printed circuit frequency: R = 75,000,000 ÷ F, where R board, is used to hold the resistors. As...
  • Page 35 AC mains voltage is connected, industry. disconnected, or has changed signifi cantly The Model 68A is designed to interface from nominal. A combination of hardware with audio signals that have nominal signal and software is used to monitor one of the levels of –12 dBV to +6 dBu.
  • Page 36 68A to 69A (Note 2) Remote Control Common 68A to/from 69A Notes: 1) Connector types on Model 68A and Model 69A are 9-pin D-subminiature female. Connectors use 4-40 threaded inserts for locking with mating plug. 2) Remote control sources connect to D-sub on Model 68A, then passively route to Model 69A via 68A/69A interface D-sub.

  • Page 37: Specifi Cations

    Application: operates in conjunction with Model Monitor Outputs: 6-channel surround, 2-channel 68A Central Controller stereo Type: electronically balanced, intended to drive Power: provided by Model 68A Central Controller balanced or unbalanced loads of 600 ohms or Output Data: generates MIDI system-exclusive greater messages...

  • Page 38: Appendix A

    Console is programmed to generate a subset of what the Model 68A is capable of doing. By using standard MIDI messag- es, the Model 68A can be used for a wide range of special applications. Any device that can be programmed to send system- exclusive MIDI messages can be used to control the Model 68A.
  • Page 39 System-Exclusive Message Byte of Studio Tech ID Byte of Studio Tech ID Byte of Studio Tech ID Product ID (Model 68A) Function, Restore Power Up Default Confi guration EOX, End of System-Exclusive Message Notes: Action taken after message is received: Set all input sources to off.
  • Page 40 Value Description System-Exclusive Message Byte of Studio Tech ID Byte of Studio Tech ID Byte of Studio Tech ID Product ID (Model 68A) Function, Input Source and Associated Channels Input Source, range 1-4: 1=Surround A 2=Surround B 3=Stereo A 4=Stereo B Input Channel Status Bit Map (sum values from all six channels): Channel 1 (L): off=00;...
  • Page 41 Byte of Studio Tech ID Byte of Studio Tech ID Byte of Studio Tech ID Product ID (Model 68A) Function, Monitor Output Channel Status Surround Monitor Output Channel Status using Monitor Output Relays Bit Map (sum values from all six channels): Channel 1 (Surround 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 68A) Function, Monitor Output Level - Normal Monitor Output Level, MSB, range 00-7F Monitor Output Level, LSB, range 0-1 EOX, End of System-Exclusive Message Notes: Control console sends new value each time monitor output level is changed.
  • Page 43 System-Exclusive Message Byte of Studio Tech ID Byte of Studio Tech ID Byte of Studio Tech ID Product ID (Model 68A) Function, Monitor Output Level - Reverse Monitor Output Level, MSB, range 00-7F Monitor Output Level, LSB, range 0-1 EOX, End of System-Exclusive Message Notes: Not sent by control console.
  • Page 44 Description System-Exclusive Message Byte of Studio Tech ID Byte of Studio Tech ID Byte of Studio Tech ID Product ID (Model 68A) Function, Mono Mono Status, range 0-3: 0=off 1=on, L+R sent to left and right channels of monitor output...
  • Page 45 Value Description System-Exclusive Message Byte of Studio Tech ID Byte of Studio Tech ID Byte of Studio Tech ID Product ID (Model 68A) Function, Downmix Downmix Status, range 0-1: 0=off 1=on EOX, End of System-Exclusive Message Issue 2, January 2005...

This manual is also suitable for:

69a