Alesis DEQ230D manual Description of the Basic Modes, Program mode, Edit mode, Store mode

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Basics of Equalization 3

Description of the Basic Modes

Program mode

When this manual refers to Program mode, we mean the very top level of functionality of the DEQ230. Program mode is where you are when it is possible to use the [DOWN/UP] buttons to select between the different programs that reside in the unit. In this mode, you have access to the 30 Preset programs and 30 User programs.

A Program consists of all of the settings on the front panel, with the exception of the status of the [BYPASS] button. The things stored in memory and recalled when you select a program are:

The gain settings of all 30 bands for both channel A and channel B

The status of the [LINK/EXIT] button

The gain settings for all 30 bands of channel B, even if the Link function is active. They are merely "hidden" by the Link function.

The individual Channel Level settings for channels A and B

If the DEQ230 has been in some other mode, pushing the [LINK/EXIT] button will return it to Program mode. If you see a dot to the right of the Program number LEDs, that means the program has been edited. Be certain to save any changes you've made that you would like to keep! To learn how to Store an edited program, turn to page 38.

Edit mode

While in Program mode, if you push one of the [BAND SELECT] buttons the unit will enter Edit mode. You can tell you are in Edit mode when you see one or more of the LEDs above the [BAND SELECT] buttons blinking. Whichever bands have a blinking LED are the ones that will be boosted or cut when you use the [DOWN] and [UP] buttons.

After you have edited a frequency or an Edit Group (a group of frequencies), if you push the [LINK/EXIT] button you will be returned to Program mode. If you made any changes, you will see a dot to the right of the Program number LEDs. But be certain to save any changes you've made that you would like to keep! That is where Store mode comes in.

Pressing the [DOWN/UP] buttons at the same time will reset the band you have selected to 0 dB.

Store mode

Pressing the [STORE] button takes you into Store mode. From here you can decide which of the 30 User Programs will become the new location for the edited program. You may also instruct the DEQ230 to copy the settings from Channel A to Channel B during the Store process. For information on how to perform either of these procedures, see page 38.

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Contents Reference Manual This page intentionally left blank Table Of Contents Chapter Four Applications Welcome IntroductionBypass button DEQ230 Key FeaturesDEQ230D only How to Use This Manual This page intentionally left blank Please follow these precautions when using this product Important Safety InstructionsImportant Safety Instructions English Safety symbols used in this productPage Instructions de Sécurité Importantes French Symboles utilisés dans ce produitPage Lesen Sie bitte die folgende Sicherheitshinweise German Sicherheit Symbole verwendet in diesem ProduktPage FCC Compliance Statement CE Declaration Of ConformityThis page intentionally left blank If you cant wait to get started Quick Start GuideHook it up to a mixer Try some equalization Play some signal into the unitStore the Program Quick Start Guide Quick Start Guide Thermal Considerations in Rack Mounting Installing in a RackConnections Unpacking and InspectionTo use the DEQ230 in another country AC Power HookupUnbalanced I/O Connecting Inputs and OutputsStereo connections Balanced I/OOperating Levels Mono connectionsConnecting to equipment with XLR inputs and outputs Connecting to the inserts on an instrument amplifierDigital Signal In, Analog Signal Out Analog Signal In, Digital Signal OutDigital Signal In, Digital Signal Out About Audio Cables This page intentionally left blank Basics of Equalization What is equalization?Description of the Controls Basics of EqualizationDescription of the Basic Modes Program modeEdit mode Store modeAudition mode Bypass modeChannel Level mode Basic operation Program mode Single Band Edit Basic operation Edit modeBand Solo LED Band Gain Cut/Boost RangesProportional Gain Memory Multiple Band EditSelecting an Edit Group Relative Gain DisplayBasics of Equalization Limits of Relative Gain Release Edit Group function Basic operation Store mode Channel Copy Basic operation Audition mode Manual Audition Audition AutomationAudition Automation override Basic operation Channel Level mode Metering modes Demonstration modeReal-time Analysis mode DEQ230D only Hidden ModesItem button Function Displayed Options Default Value Setup modeButton 2 Release Edit Group On/Off Button 1 Master Level +/- 6 dBButton 4 Edit Time Out On/Off Button 3 Audition Automation On/OffButton 5 Lock On/Off Button 8 System Exclusive Transmit Send? Buttons 6-12 DEQ230D onlyButton 6 Midi Channel ALL Button 7 Midi Program Change On/OffButton 12 Force Analog Input Auto/Analog Button 9 System Exclusive Receive WaitingButton 10 Midi Out/Thru Select Out/Thru Button 11 Sample Rate Select 44.1/48Hold Press Result Button combinationsPhasing Equalization ArtifactsDistortion NoiseWhat makes the DEQ230 unique? Constant Q vs. Variable QConstant Q Variable QMulti-band application and results Basics of Equalization Tape Hiss Removal ApplicationsRock Kick Drum Vocal AirEliminating Feedback Filtering effectsAnswering machine Comb filtering This page intentionally left blank Title Description Program ChartsProgram Charts Some signals have 60Hz hum no matter what you do. This Untouched corner frequency is approximately 75Hz See note for program From magnetic media Place at the high end of the mix 11kHz for effect, bandlimiting it to half the sample rate Listeners attention Blank Store one of your programs here DEQ230 Settings Chart This page intentionally left blank Line Conditioners and Protectors TroubleshootingCare and Maintenance CleaningTroubleshooting Index TroubleshootingCustomers outside the USA and Canada Obtaining Repair ServiceRefer All Servicing to Alesis Customers in the USA and CanadaThis page intentionally left blank Mechanical SpecificationsDEQ230 Audio PerformanceThis page intentionally left blank Alesis Limited Warranty Warranty / ContactAlesis Contact Information

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.