Connecting to the inserts on an instrument amplifier

Unbalanced I/O

The insert sends on a guitar or bass amp are usually labeled "effects send and return" or "insert send and return." This allows your instrument to be boosted to line level before the signal is sent to the equalizer, processed, and returned to the power amp.

Another method would be to insert the DEQ230 between the preamp and the power amp, if you are using a two-piece system. You should never put the equalizer between the power amp and the speaker, as the high-powered levels created by the power amp will damage the unit.

Connecting to equipment with XLR inputs and outputs

If you are connecting the DEQ230 to a product with XLR balanced inputs and outputs, you will need to convert this signal to a TRS balanced connector. Make sure that pin 2 of the XLR connector is connected to the tip of the TRS adapter, and pin 3 is connected to the sleeve.

Connecting to equipment with S/PDIF inputs and outputs (DEQ230D only)

The DEQ230D has the added capability of receiving and transmitting its audio signal in the digital domain. This is done through a pair of coaxial connectors (also known as RCA jacks) found on the rear panel. The jacks are labeled S/PDIF In/Out: each carries two channels of audio, so both Channel A and Channel B are handled by a single cable in each direction.

Using the S/PDIF jacks to connect to an external device such as the Alesis MasterLink is very easy, because the DEQ230D will automatically switch over to the S/PDIF input when it senses that a valid digital signal is present.

Connections 2

Don't use line transformers! Many XLR-to-1/4" adapters sold at electronics stores are NOT adapters, but transformers (and very low quality transformers at that). Don't use these on the output of the DEQ230—they're unnecessary and generally sound awful because they don't have the headroom to handle the DEQ230's output. Get a hard-wired adapter or cable from your professional audio dealer, or make one yourself from components.

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Alesis DEQ230 Connecting to the inserts on an instrument amplifier, Connecting to equipment with XLR inputs and outputs
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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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