Basics of Equalization 3

Here's a description of what each function does.

Button 1: Master Level (+/- 6 dB)

The Master Level function is one way to customize the DEQ230 to your environment. If the equipment in your setup tends to send very hot signals, you can use this function to prevent the output of the DEQ230 from clipping.

When a hot line level signal comes in, the DEQ230 has plenty of headroom to deal with it. But if you perform some radical equalization on this signal, it is possible that the combination of the incoming hot signal plus the equalization you have done may put the signal "over the top" and within range of clipping. The Master Level function allows you to reduce the level of the equalized signal before it reaches the final output stage of the DEQ230.

Don't confuse this with the Channel Level settings in Edit mode. The Channel Level settings are stored with the program, and therefore may vary from program to program. The Master Level setting is global; i.e., it is always active and will affect every program. There is a diagram on page 30 that illustrates the relationship between Channel Level and Master Level.

To lower or raise the Master Level setting, use the [DOWN/UP] buttons. To reset the value of this function to 0 dB, press the [DOWN] and [UP] buttons at the same time.

For an explanation of how to use the Channel Level control feature, see page 42.

Button 2: Release Edit Group (On/Off)

Of all the Setup features, this is the one that will most affect the way you work with the DEQ230. The Release Edit Group setting determines the behavior of the [BAND SELECT] buttons in Edit mode.

For the sake of describing this feature, let's review some things we already know. When you press a [BAND SELECT] button, you enter Edit mode. If you don't press one of the [DOWN/UP] buttons right away, you can keep pressing [BAND SELECT] buttons until you have several of them selected simultaneously. This is called selecting an Edit Group.

Once you have selected an Edit Group, you can cut or boost the gain of all of the bands in the Edit Group simultaneously; they will move up or down in proportion to one another. The Release Edit Group feature does not affect these things; this is always how the DEQ230 operates.

However, once you make an edit, it makes a big difference whether the Release Edit Group feature is on or off. If it is on, the very next [BAND SELECT] button you press will "release" all of the previously selected bands. The only band that will be selected is the one you just pressed. You will know this when it happens, because that's the only Band Gain LED that will be blinking.

If you are likely to edit only one or two bands at a time when constructing a new curve, set the Release Edit Group function to On. This will enable you to move more quickly across the audio spectrum.

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Alesis DEQ230D manual Button 1 Master Level +/- 6 dB, Button 2 Release Edit Group On/Off
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DEQ230, DEQ230D specifications

The Alesis DEQ230 and DEQ230D are sophisticated digital equalizers designed for audio professionals seeking precision in sound control. Equipped with advanced features and innovative technologies, these units cater to a variety of applications, from live performances to studio recordings.

Both models include a powerful 31-band graphic equalizer, allowing users to sculpt their sound with incredible accuracy. The DEQ230 and DEQ230D offer extensive frequency coverage from 20 Hz to 20 kHz, ensuring that all audible frequencies are managed effectively. The 1/3-octave resolution facilitates fine adjustments, enabling sound engineers to target specific problem frequencies within the mix.

One of the notable characteristics of the DEQ230 series is its dual-channel operation. The DEQ230 provides individual equalization for two separate channels, making it an excellent choice for stereo setups or multi-channel applications. The DEQ230D takes this functionality even further by incorporating digital connectivity, allowing for seamless integration with digital audio systems and enhancing flexibility in various setups.

In terms of technology, the DEQ230 and DEQ230D utilize state-of-the-art digital signal processing (DSP) to deliver high-quality audio performance while minimizing latency. These models feature comprehensive output level control and provide precise metering through LED indicators, which allows sound engineers to monitor levels easily while adjusting the EQ settings.

Moreover, both equalizers come equipped with a variety of memory presets. This feature enables users to save and recall specific settings, streamlining the workflow during live events or studio sessions. The intuitive interface ensures ease of use, with clearly labeled controls that facilitate quick adjustments on the fly.

Alesis has also prioritized durability in the design of the DEQ230 and DEQ230D. The robust construction and rack-mountable chassis make them ideal for both touring and permanent installations. Additionally, the inclusion of balanced XLR and TRS inputs and outputs guarantees compatibility with professional audio gear while minimizing signal degradation.

Overall, the Alesis DEQ230 and DEQ230D represent valuable tools for any audio professional, offering precision, versatility, and robust performance in a compact design. Their combination of advanced features and user-friendly interface makes them an excellent investment for enhancing sound quality in any audio environment.
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