2 Connections

There are three ways to connect the DEQ230D with another digital audio device:

Analog Signal In, Digital Signal Out

A potential use for this setup would be if you are running your recorded tracks into a mixer that only has an analog output, but your mixdown deck has S/PDIF inputs. Use the DEQ230D to put that finishing touch on the mix, and then use it as a digital audio interface into the mixdown deck. In doing this you ensure the cleanest possible connection between the DEQ230D and the mixdown deck.

To use the DEQ230D in this way, connect the S/PDIF Output of the DEQ230D to the S/PDIF Input of the receiving device.

Digital Signal In, Analog Signal Out

This would be the method to use, for example, if you have a mixer with a digital output for its main mix and an amplification system that only has analog inputs. With this setup you would be able to pass the audio to the DEQ230D in the digital domain, shape the signal using its 28-bit internal processing, and then send the result to the amplification system.

Of course, you could substitute a CD player or DAT deck for the mixer in the above example, and/or substitute a mixdown deck or a couple of channels on a mixer for the amplification system.

In this case, connect the S/PDIF Output of the transmitting device to the S/PDIF Input of the DEQ230D.

Digital Signal In, Digital Signal Out

In cases where every device in your audio chain has a digital audio input and output, the DEQ230D is right at home. Simply pass the audio from the transmitting device’s S/PDIF Output into the DEQ230D’s S/PDIF Input, use it to sculpt the signal, and then pass the audio on to the next device by connecting the DEQ230D’s S/PDIF Output to the S/PDIF Input of the receiving device.

Operating the DEQ230D in any of the three configurations described above is really no different from using it in a completely analog system. For that reason, from this point on in the manual we will make no distinction between operating the DEQ230D in the digital or analog domains.

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Alesis DEQ230D manual Analog Signal In, Digital Signal Out, Digital Signal In, Analog Signal Out
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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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