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ToolMod Pro-Audio Module System
User Manual
TM222
Stereo Mastering Compressor
The TM222 Stereo Mastering Compressor comes with many additional
functions to achieve high loudness gain without the typical 'compres-
sor sound'. The module is best suited for mastering dynamics proces-
sing and as master compressor for mixing.
The TM222 is available in horizontal and vertical versions. Both ver-
sions are electrically identically and differ only in the lettering of the
faceplate and the orientation of the control knobs. The module fits
into 1U-high and 4U-high ToolMod frames.
Content
Control Elements....2
Special Features....8
Connectors....11
technical Specifications....12
Hint
We assume that you are familiar with the basic princip-
les of pro audio devices. Therefore, the explanations in
this manual are limited to the special features and func-
tions of the particular module. General information
on many pro audio topics can be found on our web site
http://www.adt-audio.com
This manual is a supplement to the ToolMod User Manual that contains extensive
information and safety instructions on the ToolMod® Pro-audio Module System by
adt-audio®. If you don't have the ToolMod User Manual ask for a copy by email or
fax, or download a PDF-version from one of our websites. It is imperative that you
take account of the hints and safety instruction in the ToolMod User Manual that
are not repeated in this supplement for a particular module.
adt-audio
®
analoge + digitale Tonstudiotechnik Karl Juengling
Email: info@adt-audio.com • Web: www.adt-audio.com + www.adt-audio.de
Inh. Dipl.-Ing. Gerd Juengling e. K.
4-6, Scholtwiese • Gladbeck • 45966 • NRW • Germany
Phone: 0049 2043 51061 • Fax: 0049 2043 56844
®
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Summary of Contents for adt-audio TM222
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Page 1: Table Of Contents
ToolMod® Pro-audio Module System by adt-audio®. If you don‘t have the ToolMod User Manual ask for a copy by email or fax, or download a PDF-version from one of our websites. It is imperative that you take account of the hints and safety instruction in the ToolMod User Manual that are not repeated in this supplement for a particular module. -
Page 2: Principle Of Operation
1 / Peak to position 6 / RMS. With CREST set to peak mode, the TM222 works as fast and aggressive compressor that responds to the peak value of the audio signal. Position 6 selects RMS mode, which results in slow and soft com- pression that is controlled by the loudness of signal. - Page 3 5, 10 dB above threshold is reduced to 2 dB. All to the left, no compression takes place. The maximum ratio is 20 : 1. With this setting, the TM222 works as a limiter. Practical values for mastering are in the range from 1.2 to about 3.
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Page 4: Basic Setup / Quick Ref
Crest factor. However, the most important use of the TM222 is a compression that achieves high loudness but maintains the originali- ty of the mix, the transients, and also preserves the subjective impression of dynamic. - Page 5 ToolMod ® Pro-Audio Module System adt-audio TM222 Stereo Mastering Compressor For this, start with a base setting as follows: Base Settings: Threshold - ~ - 15 dB ... - 20 dB Crest - 3 Attack - 6 ms Release - 0.3 sec...
- Page 6 ToolMod ® Pro-Audio Module System adt-audio TM222 - Stereo Mastering Compressor re that you don't have different levels with and without compressor for this test. The autogain should take care about this; however, you may need to fine trim the output level with the gain pot.
- Page 7 ToolMod ® Pro-Audio Module System adt-audio TM222 Stereo Mastering Compressor a way that the distortion remains constant over the frequency. The ENV pot sets the start frequency for this filter up to 120 Hz. At 120 Hz the bass compression is reduced to keep the distortion constant at lower frequencies.
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Page 8: Special Features
Such a circuit would change the entire characteristic, which is not useful. The autogain circuit in the TM222 compensates the attack time setting by empirically determined correction values. Depending on the peculiarities of a particular mix the error might be up to 3 dB over the entire range of the attack pot. - Page 9 Feedback Regulation The TM222 is a feed forward controlled VCA Compressor. It is possible to operate the compressor with feedback regulation instead, which changes the characteristic of the regulation. To switch over to feedback operation it is necessary to connect the outputs of the compressor to the side chain insert inputs.
- Page 10 ToolMod ® Pro-Audio Module System adt-audio TM222 - Stereo Mastering Compressor After pressing the SIDE-CHAIN-INSERT switch the compressor operates with feedback regulation. Important Notes for Feedback Operation: The control range of the Ratio pot is different with feedback regulation. The maximum Ratio with the Ratio pot all to the right is 3 : 1.
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Page 11: Connectors
Connectors The TM222 is a 4U ToolMod module that uses two adjacent module compartments in a 1U-high frame or two module compartments above each other in a 4U-high frame. The inputs and outputs use the xlr connector of the two compartments. The TRS jacks are used for the side chain insert inputs and outputs. -
Page 12: Technical Specifications
ToolMod ® Pro-Audio Module System adt-audio TM222 - Stereo Mastering Compressor Technische Specifications Format ToolMod Module Size 4U Versions TM222h - horizontal faceplate TM222v - vertical faceplate Power Supply Tool-Series Standard Supply Voltages +/- 25 V and + 48 V Phantom (not used in this module) - Page 13 ToolMod ® Pro-Audio Module System adt-audio TM222 Stereo Mastering Compressor Threshold Range + 18 dB bis - 24 dB, referred to + 6 dBu = 1.55 V ~ + 4 dBV 0 dB position internally calibrated Ratio Range from 1 : 1 (no compression) to...
- Page 14 Copyright This manual is copyright protected. Do not copy, distribute, or translate into other languages without permission in writing from adt-audio® Karl Juengling. All rights re- served. Trade Marks adt-audio® and ToolMod® are registered trademarks of analoge + digitale Tonstudiotech- nik Karl Juengling.