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Fusion Violet EQ User Guide

Introduction

About SSL Fusion Violet EQ

The SSL FUSION Violet EQ plug-in is a musical and intuitive two-band shelving EQ with minimum phase-shift.

SSL FUSION is a hardware mix bus processor, delivering five powerful analogue colouration tools — Vintage Drive, Violet EQ, HF Compressor, Stereo Image enhancer, and SSL Transformer — from SSL, the Masters of Analogue.

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Key Features

  • Modelled on the SSL Fusion Violet EQ processor
  • First new SSL analogue EQ circuit for more than 25 years 
  • Carefully selected frequencies and response curves 
  • Includes the high-pass filter from the SSL Fusion hardware unit
  • Four switched frequency points and +/- 9 dB attenuation 
  • NEW: FAT button adds subtle 'oomph' to the low-end when the HPF is switched in
  • ECO mode: drop into 'ECO' mode for reduced latency and CPU-use, for tracking and recording purposes 
  • Modelled using a combination of real-life measurements, analogue circuit designs, and close collaboration with the original analogue designers of the SSL Fusion hardware and validated by real-world producers 
  • Built on the SSL Plug-in Engine 
  • NEW: Built-in help! Simply click the '?' symbol and mouseover the GUI for more information about each of the parameters 
  • SSL’s cross-platform preset management and A/B-ing system 
  • Built-in UNDO/REDO support 
  • Comes with presets from world-class producers and engineers Adrian Hall, Sean Divine and Wez Clarke

Installation

You can download installers for a plug-in from the website's Download page, or by visiting a plug-in product page via the Web Store.

All SSL plug-ins are supplied in VST, VST3, AU (macOS only) and AAX (Pro Tools) formats.

The installers provided (macOS Intel .dmg and Windows .exe) copy the plug-in binaries to the common VST, VST3, AU and AAX directories. After this, the host DAW should recognise the plug-in automatically in most cases.

Simply run the installer and you should be good to go. You can find more information about how to authorise your plug-ins below.

Licencing

Visit the online plug-ins FAQ for guidance in authorising your SSL plug-in.

Using SSL Fusion Violet EQ

Interface Overview

The basic interface techniques for the Fusion Violet EQ are largely identical to those for the Channel Strip.

Presets

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Switching between presets can be achieved by clicking the left/right arrows in the preset management section of the plug-in GUI, and by clicking on the preset name which will open the preset management display.

Preset Management Display

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There are a number of options in the Preset Management Display:

  • Load allows loading of presets not stored in the locations described above.
  • Save As... allows for storage of user presets.
  • Save as Default assigns the current plug-in settings to the Default Preset.
  • Copy A to B and Copy B to A assigns the plug-in settings of one comparison setting to the other.

A-B Comparisons

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The A B buttons at the base of the screen allows you to load two independent settings and compare them quickly. When the plug-in is opened, setting A is selected by default. Clicking the A or B button will switch between setting A and setting B.

UNDO and REDO functions allow undo and redo of changes made to the plug-in parameters.

Automation

Automation support for Fusion Violet EQ is the same as for the Channel Strip.

ECO Mode

If a plug-in has an ‘ECO’ button, this means that there’s some clever DSP, such as oversampling, going on under the hood. This is why it sounds so good!

Putting the plug-in into ECO mode drops the plug-in into a reduced latency and CPU-use mode - ideal for recording and tracking!

Built-In Help

As a traditional user guide, it’s not really in my best interests to mention this, but...

Click the ‘?’ and mouse over ANY control in the plug-in GUI to see some contextual help about that control

Interface Controls

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Input Meter

Input metering from -60 to 0 dBFS, with 3s peak hold for a clear indication of peaks.

Input Trim

Applies a gain to the input signal.

Output Meter

Output metering from -60 to 0 dBFS, with 3s peak hold for a clear indication of peaks.

Output Trim

Applies a gain to the output signal.

HPF

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The High Pass Filter removes sub-frequency content, using a 3rd order/18dB per octave slope filter.

‘FAT’

Adds subtle 'oomph' to the low-end when the HPF is switched in, by introducing a subtle resonance around the cut-off frequency.

Low Shelf

-9 to +9 dB of gain, the LOW band offers choices of 30, 50, 70 or 90 Hz.

High Shelf

-9 to +9 dB of gain, the HIGH band offers choices of 8, 12, 16 and 20 kHz.

Plug-in Bypass

The IN switch located in the EQ section provides an internal plug-in bypass. This allows for smoother In/Out comparisons by avoiding the latency issues associated with the host application’s Bypass function. The button must be ‘lit’ for the plug-in to be in circuit.

Tips & Tricks

The design of the Violet EQ module draws on the SSL legacy of carefully selected frequencies and response curves, to create a musical and intuitive EQ.

Full Mix Content

In the LOW band, full mixes tend to benefit from a modest amount of 30, 50 or 70 Hz to add weight.

In the HIGH band, 8 and 12 kHz are good starting points for adding tasteful amounts of high-end.

One of the most common practices in production is to mix into an EQ that adds a little bit of top and bottom-end - and the SSL Fusion’s Violet EQ module is designed specifically for that purpose!

‘FAT’ Control

The additional ‘FAT’ control drops the high-pass filter into ‘FAT’ mode. This mode subtly increase the HPF Q factor, introducing a gentle resonance and giving it 'oomph' to the low-end when the HPF is switched in.