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ToolMod Pro-Audio Module System

User Manual

®

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. 

a digitale Tonstudiotechnik Karl Juengling

Inh. Dipl.-Ing. Gerd Juengling e. K.

4-6, Scholtwiese • Gladbeck • 45966 • NRW • Germany

Phone: 0049 2043 51061 • Fax: 0049 2043 56844

Email: [email protected] • Web: www.adt-audio.com + www.adt-audio.de

®

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.

TM222

Stereo Mastering Compressor

Principle of Operation....2

Control Elements....2

Basic Setup / Quick Ref...4

Special Features....8

Connectors....11

technical Specifications....12
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

Content

Hint

Summary of Contents for TM222

Page 1: ...2 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 orienta...

Page 2: ... Steps 2 to 5 are interim values between the two extremes Use Crest to set the basic characteristic of the compres sor In most cases the interim values 2 to 5 are the best choice The crest setting al so determines the minimum attack and release time This is only important if you se lect RMS or position 5 ATTACK determines the attack time of the compressor This pot determines the attack time of the...

Page 3: ...itry keeps the output level constant independent of the THR Ratio and Attack setting With autogain you don t need to readjust the output gain after a set ting has been changed The AUOGAIN OFF switch disables the function The reference level for the compensation can be internally adjusted The factory standard setting is 6 dBu 4 dBV You can specify other levels with the order Autogain and gain ope r...

Page 4: ...the compressor to modifiy the behavior of the compressor under regulation Like the audio inputs and outputs the side chain insert inputs and output are electronically balanced and have the impedances levels and headroom The side chain output signal is always present while the side chain in sert input is selected by the SIDE CHAIN INSERT switch The O P TO S C switches the signal at the side chain i...

Page 5: ... 2 adjusting the Attack Time Now turn the Attack pot all to the right Due to the very long attack time almost no regulation takes place anymore since it simply takes to long for the compressor to re act Turn the attack pot slowly to the left until you here the compression come up again and find a setting that lets the transient pass thru without causing regulation but is fast enough to fade up the...

Page 6: ...disappears Such a setting is absolutely necessary to increase the density and therefore the subjective impression of higher loudness However with a release time setting in that range another problem appears that limits the minimum release time With short release time settings and low frequencies the control voltage which is actually the rectified audio input signal is no dc voltage but a dc voltag...

Page 7: ... part of the compression characteristic below the threshold and the 2 1 characteristic above threshold is no high enough to cause a big difference in the behavior 8 adding parallel Compression After trying soft knee reduce the threshold and or increase the ratio again and ad just a compression that is a little too high but take care that you make a mental note of the old setting It depends on the ...

Page 8: ...nger attack time setting may cause higher deviations With longer attack times the output level depends on the level of the short peaks that pass the compressor without causing re gulation Therefore the resulting real gain reduction differs from the calculated value that results from the setting of threshold and ratio Without an additional dynamic cir cuit it is not possible to calculate the precis...

Page 9: ...ent left channel 2 connect TRS OUT b EQ compartment right channel with TRS IN b Compressor compartment right channel With these connections the switch SIDE CHAIN INSERT selects the order of equalizer and compressor SIDE CHAIN INSERT not pressed EQ Compressor SIDE CHAIN INSERT pressed Compressor EQ Some notes It is not necessary that eq and compressor are installed next to each other or in the same...

Page 10: ...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 With feedback regulation the O P TO S C switch causes an internal feedback from out put to input DO NOT USE THE O P TO S C SWITCH IF YOU USE FEEDBACK REGULATION ...

Page 11: ...ions in the 1U high and 4U high Frame The above image shows the rear panel of the of a 1U high frame If the module is in stalled in the compartments 1 and 2 the connectors are allocated as follows Input left XLR IN1a Output left XLR OUT1a Input right XLR IN2a Output right XLR OUT2a Side Chain Insert Input left TRS IN1b Side Chain Insert Output left TRS OUT1b Side Chain Insert Input right TRS IN2b ...

Page 12: ...Bu 15 nF 2 kΩ 20 kHz THD 1 26 dBu 20 nF 2 kΩ 20 kHz THD 1 22 dBu CMRR IEC 40 dB 40 Hz 15 kHz Gain internally calibriert to 0 dB 0 3 dB without regulation Fill all to the left Gain 0 dB Gain control range 20 dB the Gain pot controls the output level and does not alter the compression Frequency 3 dB limits 10 Hz to 150 kHz without regulation Response Power Bandwidth for Headroom 30 dBu from 10 Hz to...

Page 13: ...atio Pot LT Int long Time Integration with 0 3 sec Attack Time and adjustable Recovery Time up to 25 sec Increases the static Release Time depending on the density of the Signal Autogain automatic Gain Correction depending on the Threshold Ratio and Attack Settings active at Threshold Setting below 0 dB 6 dBu factory Standard AUTOGAIN OFF disables Autogain Side Chain Insert electronically balanced...

Page 14: ... Conformity Manufacturer Fa Karl Juengling Type of Equipment Audio Signal Processor Product ToolMod Pro Audio Module System consisting of Modules Mounting Frames Power Supply Units and Accessories Compliance Engineer Gerd Juengling Test Basis EN50081 1 1992 EN50082 1 1992 EN61000 3 3 1995 EN60065 1993 Class1 EN61000 3 2 2000 EN60065 2002 EN55013 2001 EN55020 2002 73 23 EWG 93 68 EWG We hereby decl...

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