Alesis manual DEQ230 Key Features, Bypass button, DEQ230D only

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DEQ230 Key Features

1.Offers the best of digital technology and analog-style control: a graphic display with instant editing of any band or combination of bands, plus the ability to store programs

2.60 programs total: 30 preset and 30 user-programmable

3.48 KHz sampling rate, 24-bit A/D/A, 28-bit internal processing

4.Two channels of equalization, independent or linkable

5.30 EQ bands per channel, spanning 25 Hz-20 KHz in 1/3- octave increments

6.+/- 12 dB boost/cut with center detente

7.Constant Q technology for finer control of audio

8.LOCK function for "set and forget" situations, which prevents accidental reprogramming

9.AUDITION mode for automated program comparison

10.Individual Channel Level adjustment per program

11.Master Level adjustment

12.[LINK] button for quick creation of matched EQ curves

13.[BYPASS] button

14.Configurable editing modes to suit the way you work

15.Several methods of accelerated program selection

16.Ability to copy settings from Channel A to Channel B during Store procedure

17.Easy-to-read 7-segment Numeric LED Display

18.Over 750 Band Gain LEDs, making it easy to read EQ curves from a distance

19.SIGNAL and CLIP LEDs

20.Balanced input/impedance-balanced output (TRS)

21.Compact 1-space rackmount profile

DEQ230D only:

22.Real-time Analysis (RTA) mode for visual feedback of incoming audio signal, with selectable metering modes

23.S/PDIF input/output, auto-senses incoming digital audio

24.Clock selectable between 44.1k and 48k sampling rates

25.MIDI in/out for program changes and sys-ex storage

26.Balanced input/output (TRS)

27.+4/-10 operating level switch (rear panel)

For full operating specifications, see page 75.

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Contents Reference Manual This page intentionally left blank Table Of Contents Chapter Four Applications Introduction WelcomeDEQ230 Key Features Bypass buttonDEQ230D only How to Use This Manual This page intentionally left blank Safety symbols used in this product Important Safety InstructionsImportant Safety Instructions English Please follow these precautions when using this productPage Symboles utilisés dans ce produit Instructions de Sécurité Importantes FrenchPage Sicherheit Symbole verwendet in diesem Produkt Lesen Sie bitte die folgende Sicherheitshinweise GermanPage CE Declaration Of Conformity FCC Compliance StatementThis page intentionally left blank Quick Start Guide If you cant wait to get startedHook it up to a mixer Play some signal into the unit Try some equalizationStore the Program Quick Start Guide Quick Start Guide Unpacking and Inspection Installing in a RackConnections Thermal Considerations in Rack MountingAC Power Hookup To use the DEQ230 in another countryConnecting Inputs and Outputs Unbalanced I/OMono connections Balanced I/OOperating Levels Stereo connectionsConnecting to the inserts on an instrument amplifier Connecting to equipment with XLR inputs and outputsAnalog Signal In, Digital Signal Out Digital Signal In, Analog Signal OutDigital Signal In, Digital Signal Out About Audio Cables This page intentionally left blank What is equalization? Basics of EqualizationBasics of Equalization Description of the ControlsStore mode Program modeEdit mode Description of the Basic ModesBypass mode Audition modeChannel Level mode Basic operation Program mode Basic operation Edit mode Single Band EditBand Solo Band Gain Cut/Boost Ranges LEDRelative Gain Display Multiple Band EditSelecting an Edit Group Proportional Gain MemoryBasics of Equalization Limits of Relative Gain Release Edit Group function Basic operation Store mode Channel Copy Basic operation Audition mode Audition Automation Manual AuditionAudition Automation override Basic operation Channel Level mode Hidden Modes Demonstration modeReal-time Analysis mode DEQ230D only Metering modesSetup mode Item button Function Displayed Options Default ValueButton 1 Master Level +/- 6 dB Button 2 Release Edit Group On/OffButton 3 Audition Automation On/Off Button 4 Edit Time Out On/OffButton 5 Lock On/Off Button 7 Midi Program Change On/Off Buttons 6-12 DEQ230D onlyButton 6 Midi Channel ALL Button 8 System Exclusive Transmit Send?Button 11 Sample Rate Select 44.1/48 Button 9 System Exclusive Receive WaitingButton 10 Midi Out/Thru Select Out/Thru Button 12 Force Analog Input Auto/AnalogButton combinations Hold Press ResultNoise Equalization ArtifactsDistortion PhasingConstant Q vs. Variable Q What makes the DEQ230 unique?Variable Q Constant QMulti-band application and results Basics of Equalization Vocal Air ApplicationsRock Kick Drum Tape Hiss RemovalFiltering effects Eliminating FeedbackAnswering machine Comb filtering This page intentionally left blank Program Charts Title DescriptionProgram 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 Cleaning TroubleshootingCare and Maintenance Line Conditioners and ProtectorsTroubleshooting Troubleshooting IndexCustomers in the USA and Canada Obtaining Repair ServiceRefer All Servicing to Alesis Customers outside the USA and CanadaThis page intentionally left blank Audio Performance SpecificationsDEQ230 MechanicalThis page intentionally left blank Warranty / Contact Alesis Limited WarrantyAlesis 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.