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adt-audio TM215b User Manual

Toolmod pro-audio module, system stereo mastering peak-limiter
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ToolMod Pro-Audio Module System
User Manual
TM215b
Stereo Mastering Peak-Limiter
The TM215b is a very
fast stereo peak limit-
er that can be used to
limit the input level of
a/d converters. Special
additional features ma-
ke the inaudible regu-
lation of short signal
peaks possible.
Horizontal and vertical
versions are available.
Both versions are elec-
trically identical. Only
the orientation of the lettering and the knobs are different. The TM215b can be in-
stalled in any ToolMod frame.
Content
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
functions of the particular module. General informati-
on 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 TM215b

  • Page 1: Table Of Contents

    Horizontal and vertical versions are available. Both versions are elec- trically identical. Only the orientation of the lettering and the knobs are different. The TM215b can be in- stalled in any ToolMod frame. Content Principle of Operation..2 Control Elements..2 Basic Setup / Quick-Ref..3...

  • Page 2: Principle Of Operation

    Princle of Operation Very fast, feed-forward controlled, fully parametric VCA-limiter with calibrated stereo tracking and special, additional features. The stereo mastering peak-limiter TM215b is used to limit signal peaks fast and inaudibly. The physical limitation of a brick-wall li- miter can be partially compensated by the special LF-Attack and Dynamic-Release cir- cuits.

  • Page 3: Basic Setup / Quick-Ref

    ToolMod ® Pro-Audio Module System adt-audio TM215b Stereo Mastering Peak-Limiter  STATIC-ATTACK - frequency independent attack time control Static attack controls the attack time independent of the frequency in the range from 20 µs to 7 ms per 10 dB.
  • Page 4 ToolMod ® Pro-Audio Module System adt-audio TM215b - Stereo Mastering Peak-Limiter  Base Settings Threshold - start with 3 dB reduction and check if the limiter works permanently. If this is the case and the gain reduction display shows at least 1 dB all the time, incre- ase the threshold level in small steps until you see that the display still shows peaks but the signal is not permanently under regulation.
  • Page 5 ToolMod ® Pro-Audio Module System adt-audio TM215b Stereo Mastering Peak-Limiter  sical problem with limiting that is discussed below, the LONGEST PUMP FREE RELEASE TIME is the best possible setting. ➔ Start with a release time of about 1.5 sec and go down until the pumping disappears.
  • Page 6 As soon as the momentary value exceeds threshold, regulation starts right away. With the TM215b the delay between crossing threshold and regulation is less than 8 µs. The regulation disrupts the wave- form by putting a hard edge into the signal, which will result in additional harmonics.

  • Page 7: Connectors

    TM215b Stereo Mastering Peak-Limiter  The LF-Attack circuit in the TM215b is not a universal remedy but helps to achieve bet- ter results, lower audibility of attack distortion and/or higher gain reduction. The cir- cuit smoothes the hard edge in a frequency range that depends on the setting of the pot when the limiter kicks in.

  • Page 8: Technical Specifications

    ToolMod ® Pro-Audio Module System adt-audio TM215b - Stereo Mastering Peak-Limiter  Technical Specifications Format ToolMod Module Size 2U Versions TM215b-h - horizontal Faceplate TM215b-v - vertical Faceplate Power supply Tool-Series Standard Supply Voltages +/- 25 V and + 48 V Phantom power (not used in this module)
  • Page 9 ToolMod ® Pro-Audio Module System adt-audio TM215b Stereo Mastering Peak-Limiter  (related to RMS value 22Hz-22kHz) ≥ 125 dB without regulation @ 0 dB Gain, (related to dBA value) Control Voltage Rejection ≥ 70 dB Threshold Range + 20 dB to - 10 dB, (reference: + 6 dBu = 1.55 V ~ + 4 dBV) 0 dB position internally calibrated, Vernier: Threshold fine control, ±...
  • Page 10 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.

This manual is also suitable for:

Tm215b-vTm215b-h

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