2 Connections

Mono connections

This example shows how to connect the DEQ230 to one mono source. You can use this method to connect two mono sources or one stereo source to the DEQ230. You would need two insert cables to make both of these connections.

Stereo connections

Use two insert cables to connect the DEQ230 to the main L/R bus in the same way you would connect it to a pair of channel inserts. Simply connect one insert cable to the left main insert of the mixer, and connect the two mono jacks to the CHAN A INPUT and OUTPUT of the DEQ230. Use another insert cable to connect the right main insert to the CHAN B INPUT and OUTPUT of the DEQ230.

You can also simply connect the balanced main outputs of the mixer to the inputs of the DEQ230, then connect the outputs of the equalizer to the inputs of your mixdown recorder, monitor system, etc.

Balanced I/O

Some recording consoles have separate balanced jacks for the sends and returns instead of a single TRS jack. If your recording console has these connections, use a balanced TRS cable to connect the insert send to the INPUT of the equalizer, and another balanced TRS cable to connect the equalizer OUTPUT to the insert return.

Operating Levels

The DEQ230D can operate in either a +4dBu or –10dBV setting. A rear panel switch allows you to configure the unit to your audio environment.

The DEQ230 is a “line level” device, which means that it operates at a nominal level of –10dBV, with a maximum input level of +8dBV. Some equipment operates at a nominal level of +4dBu, and can run the signal up to +24dBu. To prevent clipping, reduce the level being sent from this equipment.

If you are unsure about the nominal operating level of the equipment to which you will be connecting the DEQ230, refer to the Reference Manual for that equipment.

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Since the DEQ230 has two channels, A and B, you can connect two independent sources. For example, you could use channel A to EQ the rhythm guitar and channel B to EQ the bass guitar. Or use channel A on the kick drum and channel B for the snare drum.

Never place the equalizer between the power amp and the speakers, as the high- powered levels created by the power amp will damage the DEQ230.

Modern production values sometimes lead to the heavy use of compression during the mastering process. When processing CD audio, you may find it necessary at times to lower the Channel Level of the active program so as to avoid clipping the output stage of the DEQ230. This will allow additional headroom for more extensive equalization. See pg. 42 for details on the Channel Level function.

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Alesis DEQ230D manual Balanced I/O, Operating Levels, Mono connections, Stereo connections
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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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