3 Basics of Equalization

Setup mode

This is where you will find some of the features that govern the way the DEQ230 operates in the other modes. They are what you would call "Global" settings, in that their status is not stored with a program. No matter which program you call up, these settings will not change. And since they make such a big difference in how the unit works, they have been "tucked away" so they won’t be altered accidentally.

To access Setup mode, first you must turn off the DEQ230. Then turn the unit back on, wait until you see the letters “DEQ230” in the display, and then hold down the [STORE] button. After a couple of seconds you will see the word "SETUP" appear in large letters above Channel A‘s [BAND SELECT] buttons. Then the LEDs over Channel A will read "M. LVL," and the LEDs over Channel B will read "+00."

The first twelve [BAND SELECT] buttons of Channel A are used to select between the different functions in Setup mode. They are:

To return to Program mode from Setup mode, press the [LINK/EXIT] button or turn the DEQ230 off and back on.

Item (button)

Function

Displayed

Options

Default

 

 

 

 

 

Value

1

(25 Hz)

Master Level

M. LVL

+/- 6 dB

0 dB

 

 

 

 

 

 

2

(31.5 Hz)

Release Edit Group

REL E.G.

Off/On

On

 

 

 

 

 

 

3

(40 Hz)

Audition Auto

AUD AUTO

Off/On

On

 

 

 

 

 

 

4

(50 Hz)

Edit Time Out

EDIT T.O.

Off/On

Off

 

 

 

 

 

 

5

(63 Hz)

Lock

LOCK

Off/On

Off

 

 

 

 

 

 

 

The following functions are available on the DEQ230D only.

 

 

 

 

 

 

 

6

(80 Hz)

MIDI Channel

MIDI CH

All, 1-16

ALL

 

 

 

 

 

 

7

(100 Hz)

MIDI Program Chg

PRG CHG

Off/On

On

 

 

 

 

 

 

8

(125 Hz)

Sys-Ex Transmit

SND SYX

Send?

N/A

 

 

 

 

 

 

9

(160 Hz)

Sys-Ex Receive

RCV SYX

Waiting

N/A

 

 

 

 

 

10 (200 Hz)

MIDI Out/Thru Select

MIDI O/T

Out/Thru

Thru

 

 

 

 

 

11 (250 Hz)

Sample Rate Select

INT CLOCK

44.1/48

48

 

 

 

 

 

12 (315 Hz)

Force Analog Input

INPUT SRC

Auto/Analog

Auto

 

 

 

 

 

 

Note that as you switch from one function to the next that the Numeric LED Display will change to show the number of the selected function.

The [STORE] button may be used to cycle through the functions also.

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Alesis DEQ230D manual Setup mode, Item button Function Displayed Options Default Value

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.