5.0 APPLICATIONS

5.1Setting up and using the EQX20

Refer to Section 2.6 External connections on page 5 for connecting to and from the EQX20.

Now unless you are familiar with operating parametric equalisers a good

starting point will be .....

Set all Q controls to 12 o'clock, this gives a Q of around 0.5 (2 octaves) which is similar to that found on mixers fitted with fixed Q, swept frequency mid range controls. Use maximum (or nearly) boost so the effect of the EQ can be clearly heard and now sweep through the frequency range to find the area that needs attention. This is good practise even if the final solution involves cutting rather than boosting as boosting produces a more apparent effect of highlighting the hum, noise, boom or whatever. Gain and Q should then be adjusted to give the best subjective result.

In general low Qs (wide bandwidth) are useful for boosting without producing too much peaking or phasing effects. High and Low shelving type equalisation can be simulated by setting the HF and LF section Qs fully CW (0.3) and sweeping their associated FREQUENCY controls out towards the high and low frequency extremes.

High Qs are normally used for cutting sounds such as mains hum or certain feedback frequencies. In this application Q should be set as high as possible (narrow bandwidth). Lower Qs and cutting can be used for reducing boominess found with some acoustic guitars.

A good example of low Q cutting is reducing the 1kHz content of guitars and snare drums to leave a 'space' for the vocals to sit in. Often cutting in this way gives a better result than trying to boost the vocals to cut through. This usually has an added bonus that guitars can stay louder in the mix.

A compressor such as the LA GCX2 may also be used together with equalisation to bring a hidden vocal forward in the mix.

AUDIO SWEETENING and PRECISION EQUALISATION

The following are a few practical examples which should be treated as clues, with personal taste, source sounds and material you are creating deciding the final settings. There are no hard and fast rules, the most important tools in any equalisation process are your ears.

INSTRUMENT

BOOSTING

CUTTING

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LA Audio Electronic Applications, Setting up and using the EQX20, Audio Sweetening and Precision Equalisation
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EQX20 specifications

The LA Audio Electronic EQX20 is a sophisticated dual-channel graphic equalizer designed for professionals in the audio industry. Known for its exceptional sound quality and versatility, the EQX20 has become a go-to tool for live sound engineers and studio professionals alike.

One of the main features of the EQX20 is its 20 bands of equalization across the 20Hz to 20kHz frequency spectrum. This extensive range allows users to make precise adjustments to the audio signal, shaping the sound to suit any environment or performance. With 3 different filter types—Shelf, Peak, and Notch—the EQX20 gives users complete control over their sound, enabling them to boost or cut frequencies with remarkable accuracy.

A standout characteristic of the EQX20 is its dual-channel operation, which enables simultaneous processing of two separate audio signals. This feature is essential for multitasking in live settings, allowing engineers to manage different sources without the need for multiple units. The intuitive layout of the EQX20 further enhances its usability, with clearly labeled controls and LED indicators for each frequency band, making adjustments quick and effortless even in complex situations.

The EQX20 utilizes high-quality components, contributing to its low noise and minimal distortion. This ensures that the integrity of the audio signal is maintained, which is crucial in professional environments where clarity and precision are paramount. The unit is also built with durability in mind, featuring a rugged chassis that can withstand the rigors of on-the-road use.

Another key technology implemented in the EQX20 is the inclusion of a bypass switch. This feature allows users to quickly compare the processed signal with the original audio, facilitating real-time adjustments and ensuring optimal sound quality.

Additionally, the EQX20's comprehensive metering provides valuable feedback on signal levels, allowing users to monitor their adjustments effectively. This is particularly beneficial during live performances, where quick and accurate sound control is essential.

Overall, the LA Audio Electronic EQX20 is a powerful tool for audio professionals seeking to enhance their sound mixing capabilities. With its precise equalization, dual-channel functionality, and robust design, the EQX20 stands out as an indispensable asset in any sound engineer’s toolkit.
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