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Model 80 Stereo Analog
Audio Distribution Amplifier
User Guide
Issue 5, October 1999
This User Guide is applicable for serial numbers:
Model 80 M80-00360 and later
Copyright © 1999 by Studio Technologies, Inc., all rights reserved
5520 West Touhy Avenue
Skokie, Illinois 60077 U.S.A.
Telephone (847) 676-9177
.ax (847) 982-0747
www.studio-tech.com
50200-1099, Issue 5
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Table of Contents
Related Manuals for Studio Tools 80 M80-00360
Summary of Contents for Studio Tools 80 M80-00360
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Page 1: User Guide
Audio Distribution Amplifier User Guide Issue 5, October 1999 This User Guide is applicable for serial numbers: Model 80 M80-00360 and later Copyright © 1999 by Studio Technologies, Inc., all rights reserved 5520 West Touhy Avenue Skokie, Illinois 60077 U.S.A. -
Page 3: Table Of Contents
Table of Contents .oreword..............5 Introduction ..............7 What This User Guide Covers ......... 7 System Overview ............. 7 System .eatures ............7 Installation ..............9 Configuration ............... 11 Operation ..............12 Troubleshooting ............12 Technical Notes ............14 Specifications............... 16 Block Diagram Model 80 User Guide Issue 5, October 1999... - Page 4 This page intentionally left blank. Issue 5, October 1999 Model 80 User Guide Page 4 Studio Technologies, Inc.
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Page 5: Oreword
.oreword I am pleased to present the Model 80 Stereo Analog Audio Distribution Ampli- fier. As both president and owner of Studio Technologies, I take a very personal approach when designing products. Getting older (38 as of this writing) has increased my appreciation of the more subtle things in life—be they a part of nature or the nuances contained in a well-designed piece of electronic equip- ment. - Page 6 This page intentionally left blank. Issue 5, October 1999 Model 80 User Guide Page 6 Studio Technologies, Inc.
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Page 7: Introduction
Introduction standards make the Model 80 suitable for continuous operation, even for on-air broadcast applications. The Model 80 Stereo Analog Audio Distribution Amplifier was developed by System .eatures Studio Technologies as part of its Studio Tools group of audio support products. One Stereo Input The differential input circuitry is compat- The Model 80 is designed to work in a... - Page 8 The Model 80’s architecture precludes the After careful study Studio Technologies’ need for individual output-level trim poten- concluded that these adjustments con- tiometers. With the input signal calibrated fused, and often interfered with the pro- using the ExactCal section, the eight cess of getting maximum audio perform- stereo outputs use 1%-tolerance compo- ance.
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Page 9: Installation
Installation Balanced Connection (Input & Output) In this section you will be installing the Ring (–) Model 80 in an equipment rack. Audio input and output connections will be made Tip ( + ) using the Model 80’s multitude of phone jacks. - Page 10 Prepare the input plugs so that tip is electronically balanced and capable of positive (+ or hot), ring is negative (– or driving balanced or unbalanced loads of cold), and sleeve is shield. The input 600 ohm or greater. The outputs can be jacks will also accept unbalanced ¼-inch individually configured for a nominal 2-conductor phone plugs.
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Page 11: Configuration
Connection Wire Color The following is a step-by-step procedure for using the ExactCal section to match an Neutral (N) Light Blue input signal with the Model 80: Line (L) Brown Protective Earth (E) Green/Yellow • Set the level control fully counterclock- wise (all the way to the left end of the travel). -
Page 12: Operation
• .or practice, mess up the settings of any time the input signal is greater than the level and right trim controls. Again 0.5dB below the nominal operating level. follow the calibration procedure and This sounds a bit confusing but isn’t really again get things set up correctly. - Page 13 If the Model 80 Doesn’t Work At All that seem to be “flaky” or intermittent, refer to the Technical Notes section of A source of AC mains power must be this guide. The ¼-inch 3-conductor phone connected to the Model 80. Depending on jacks used on the Model 80 are of very the version you have purchased, 100, 120, high quality, conforming to the industry...
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Page 14: Technical Notes
To confirm that a signal is present on the They expect to be mated with plugs that input of the Model 80 you can plug the also meet the specification. When interfac- headphones into the loop-through con- ing with the Model 80 be careful with the nectors associated with the left and right plugs you utilize. - Page 15 output” would be in dBu and the “–10 output” would be in dBV. We soon real- ized that this would cause “cranium” problems for many users. A user monitor- ing one of the Model 80’s outputs would expect to see a 14dB drop on their VU meter when going from the +4 to the –10 DIP switch position on the Model 80’s front panel.
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Page 16: Specifications
Specifications Audio Input: 1, stereo (separate left and right LED Indicators: 5, 1 power present, 4 input level input connectors) calibration Loop Through: hardwired in parallel with input .using: 1 (separate left and right loop-through connectors) Type: 5 x 20mm time lag (Littelfuse 218-series or Type: electronically balanced, direct coupled equivalent) Input Compatibility: can be connected to...
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