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Summary of Contents for Acustica INDIGO

  • Page 2 1. INTRODUCTION Thank you for purchasing Indigo. To get the most out of your new plugin suite, please take the time to read this user man- ual carefully, to facilitate and ensure a proper understanding of this plugin suite. 1.1. OVERVIEW Indigo is a five-plugin suite that embodies several ‘must...
  • Page 4: System Requirements

    Indigo, and all Acustica Audio products, can be downloaded, installed, and authorized using the Aquarius desktop application, our dedicated free app for macOS and Windows. When you purchase a product on the Acustica store, the registration is automatic. For more information, please visit our website.
  • Page 5 ZL instance is to give you the option to run an Acqua Effect with minimal latency, which is helpful for tracking or direct monitoring. NOTE: Please keep in mind that for each plug-in in the Indigo suite we recommend that you cali- brate your input levels to: -18dBFS = 0dBu.We suggest that you do not overload the input.This...
  • Page 6: Operation

    Stereo Compressor-Limiter, and a Stereo image processing tool. 3.1. INDIGO STEREO TUBE MASTERING EQUALIZER ( EQ1) The Indigo EQ features a 6-band Stereo Parametric EQ derived from a rare, all-tube Stereo Master- ing Equalizer, hand build in Denmark. Probably the most sought-after unit included in this collection.
  • Page 7 31- Lo Boost band – Gain (Left Channel): Approx 1 to +10 dB, according to the selected gain range (42) 32- Indigo LED: Shows the INPUT signal level of the plugin. 33- Lo Mid band – Gain (Right Channel): Approx 1 to -/+10 dB, according to the selected Boost/...
  • Page 8 36- Lo Boost band activation button (Right Channel): Activates (Led On) the Lo Boost band of the Right Channel. 37- Lo-Cut Frequency range (Right Channel): from 20 to 80 Hz, the first knob step (OFF) bypass- es the filter. 38- Output (Left Channel): This knob is an output gain control of the Left Channel ranging from -24dB to +24dB.
  • Page 9 3.2. INDIGO STEREO TUBE EQUALIZER (EQ2) Indigo Stereo Tube EQ 2 is a 3-band Stereo EQ derived from a modern, discrete, class-A tube ste- reo EQ, with input and output Jensen transformers. This is a one-of-a-kind, wide-range EQ, so to speak, that focuses on broad-frequency brush strokes rather than honing in on specific frequencies.
  • Page 10 17- Air: boosts the ‘ultra’ high frequencies 3.3. INDIGO STEREO SHUFFLING PROCESSOR Indigo Stereo Shuffling Processor is a Stereo image processing tool characterized by switchable High-Pass and Low-pass filters with a 3 or 12 dB/oct slope and a Tube Preamp section equipped with two different emulations.
  • Page 11 Fig.2 hp1-lp1 12 dB oct Fig.3 hp2-lp2 3dB oct...
  • Page 12 3.3.1. STEREO SHUFFLING PROCESSOR - Controls 1-Left/Right Output Meters: Displays the output levels (Left-Right) of the plugin. Range OUT: -36dB to +0dB. 2-HP1/HP2 Activation buttons: These are mutually exclusive buttons; Activate (Led On) the High- pass filter HP1 with a 12 dB/oct slope or the Highpass filter HP2 with a 3 dB/oct slope. 3- M button (Highpass filters): When this M (MID) button is selected, HP1/HP2 processing is ap- plied to the center of your soundstage.
  • Page 13 5 (ARS): A ‘Spreader’ circuit mode developed for the popular British valve consoles of the 1960s. Based on a completely different processing scheme from those devised by Blumlein (although it used quite similar technology) it was designed to correct and improve the imaging on stereo speak- er systems.
  • Page 14 3.4. INDIGO OPTO-COMPRESSOR (MONO) INDIGO STEREO OPTO-COMPRESSOR The Indigo Opto Comp dual-Mono and Stereo versions are equipped with 3 different dynamics processors (Mode): A: derives from the mastering edition of a ‘vintage style’ Stereo analog optical compressor (manu- factured by a renowned Canadian company) hand-made in the ‘70s using Class A discrete transis- tor circuitry and classic input and output transformers.
  • Page 15 C: S – 3:1 – 10:1(LIM); NOTE: S means smooth, it is the default and unique compressor ratio of one of the most famous tube dynamic processors by Acustica...this compression ratio is characterized by an extremely mu- sical, gentle and very characteristic curve.
  • Page 16 3.4.2. STEREO OPTO-COMPRESSOR CONTROLS 1- Comp Left: Activates the compressor on the Left Channel 2- Attack (Left Channel): The attack time control of the compressor (Left Channel). Values: - A: 17mS 21mS 30mS 60mmS 63mS - B: 45mS - C: 17mS 21mS 30mS 60mmS 63mS 3-M/S: This button allows you to enable the MID-SIDE configuration of the plug-in;...
  • Page 17 C: S – 3:1 – 10:1(LIM); NOTE: S means smooth, is the default and unique compressor ratio of one of the most famous tube dynamic processors by Acustica...this compression ratio is characterized by an extremely musical, gentle and very characteristic curve.
  • Page 18 26- Output (Left Channel): This knob is an output gain control of the Left compressor ranging from -24dB to +24dB. 27- Output (Right Channel): This knob is an output gain control of the Right compressor ranging from -24dB to +24dB. 28- Make-up gain (Left Channel): Compensates for the compressor’s gain reduction in the Left Channel.
  • Page 19: Technical Support

    Acusticaudio s.r.l. or its suppliers and is protected by international copyright laws. The information contained on our website may not be downloaded, modified, distributed, up- loaded, or otherwise used without the express written consent of Acusticaudio S.r.l. Acustica Audio is a trademark of Acusticaudio s.r.l.
  • Page 20 The word “indigo” comes from the Latin for In- dian as the dye was originally exported to Eu- rope from India.
  • Page 21 The Ancient Greek term for the dye was “Indi- an dye”, which, adopted to Latin (second de- clension case) as indicum or indico and via Por- tuguese, gave rise to the modern word indigo. Spanish explorers discovered an American species of indigo and began to cultivate the product in Guatemala.
  • Page 22 The Early Modern English word indigo re- ferred to the dye, not to the color (hue) itself, and indigo is not traditionally part of the basic color-naming system. Isaac Newton introduced indigo as one of the seven base colors of his work. In the mid-...
  • Page 23 (primary) blue and the color violet of the RGB color wheel. The web color blue violet or deep indigo is a tone of indigo brighter than pigment indigo, but not as bright as electric indigo.