HoRNet ThirtyOne MK2

ThirtyOne MK2 2.1.1 is available, this update of our graphic equalizer is free for owners of the plugin and includes:

•  Added Apple Silicon support for AAX
• Fixed knobs not working correctly in Logic on Apple Silicon

The update is free for owners of the plugin  and can be downloaded using HoRNet DoIn

Spectrum analyzer and 31 band graphic equalizer with Auto EQ

ThirtyOne MK2 is a powerful plugin that includes both a spectrum analyzer and a graphic equalizer, with each feature utilizing the standard 31 one-third octave bands. This combination of tools is a fundamental component of any professional live sound setup, often appearing in the final stage of the master bus in many audio mixers. Given its importance in live sound environments, we’ve meticulously recreated the behavior and response time of a well-known Italian analog spectrum analyzer.

The graphic equalizer within the ThirtyOne MK2 plugin draws inspiration from analog units, offering a familiar feel that audio engineers and musicians alike will appreciate. By utilizing the characteristics of classic analog devices, we aimed to deliver a sense of continuity in the master chain, allowing you to feel at home with this tool just as you would with traditional hardware units.

One of the standout features of the ThirtyOne MK2 plugin is its attention to the smooth LED lighting behavior. In the original hardware units, the LEDs were driven by a smoothly increasing current flow, and we’ve made sure to replicate that effect accurately in this plugin. Each column of twelve LEDs represents a frequency range, and the behavior of these LEDs is controlled by a 20dB/octave filter, which is exactly like the one found in the analog counterpart. Furthermore, users have the ability to adjust the response speed of the analyzer, with options for 0.25, 1, or 4 seconds. This flexibility allows for a more precise view of both fast peaks and average frequency levels, making it easier to analyze audio in real-time.

Each LED in the bar can represent a value of 1, 2, or 3 dBs, closely matching the behavior of the original analog device. Additionally, we’ve incorporated a 6dB/LED option for those who prefer a more sensitive display. Whenever you modify the resolution, the scale on the left of the LED display updates accordingly to reflect your adjustments.

For those seeking a more in-depth level of precision, we’ve also included a maximum peak hold LED for each frequency band. This allows you to see the highest value in each band, which can be enabled or disabled depending on your preferences. It’s worth noting that this was a feature that the original hardware unit did not offer, and we’ve added it to enhance the plugin’s functionality.

Directly beneath the spectrum analyzer, you will find the 31 sliders, which provide users with the ability to shape the output and fix any specific resonance issues that may arise. Each slider controls a 1/3 octave second-order filter, allowing adjustments in the range of -15 to +15 dB. To make it even easier to work with, you can also directly type in the desired values for each band in the box below the sliders. This is perfect for those who need precise control over their EQ settings.

A Graphic Equalizer with Special Features

One of the most innovative features of the ThirtyOne MK2 is its Auto EQ functionality. When enabled, Auto EQ automatically adjusts the gain for each EQ band based on the spectrum analyzer output, ensuring that the equalizer tunes itself to achieve a balanced and harmonically rich sound. This can be especially useful in live performances or studio settings where you want a quick and effective way to balance your audio without having to manually tweak every band.

The plugin offers three distinct Auto EQ algorithms: Average, Median, and Lucky. The first two algorithms are based on mathematical models, while the third, the Lucky algorithm, is a fun and unique feature that we kept simply because it sounds good. It was inspired by a bit of serendipity, and although it may not always produce predictable results, it offers an interesting approach to equalization.

The Auto EQ feature is deeply integrated with the spectrum analyzer, meaning that the analysis speed will directly affect how the algorithm adjusts the equalization. With the 0.25s setting, the equalizer reacts very quickly to changes in the frequency spectrum, making it perfect for tracking fast frequency spikes. On the other hand, using the 4s setting will allow the algorithm to focus more on the average frequency content, offering a smoother overall adjustment.

To fine-tune the output of the Auto EQ, we’ve introduced a compensation curve. This curve allows you to apply an offset to the levels computed by the algorithm. If you feel that the resulting EQ curve is too extreme in certain bands, you can use the custom setting of the compensation curve to correct it. Once you’ve created a compensation curve that works for you, you can easily export it and load it into other projects with the load and save buttons. This feature makes it incredibly convenient to maintain a consistent sound across different sessions.

The EQ Amount knob provides another layer of control, enabling you to scale the entire EQ curve. This adjusts every gain computed by the Auto EQ algorithm by a fixed value, allowing you to maintain the ratio between frequency bands while increasing or decreasing the overall level. Whether you’re working on a subtle adjustment or a more dramatic effect, this control ensures that you have total flexibility in shaping the sound.

In conclusion, ThirtyOne MK2 offers an unparalleled combination of classic analog features and modern digital functionality. From the smooth LED lighting to the advanced Auto EQ algorithms and compensation curve, this plugin provides the tools necessary for precise and effective sound shaping. Whether you’re working in the studio or live on stage, the ThirtyOne MK2 gives you all the tools you need to achieve a polished and professional mix.