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Contents Reference Manual This page intentionally left blank Table Of Contents Chapter Four Applications Introduction WelcomeBypass button DEQ230 Key FeaturesDEQ230D only How to Use This Manual This page intentionally left blank Important Safety Instructions Important Safety Instructions EnglishSafety symbols used in this product 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 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 Installing in a Rack ConnectionsUnpacking and Inspection Thermal Considerations in Rack MountingAC Power Hookup To use the DEQ230 in another countryConnecting Inputs and Outputs Unbalanced I/OBalanced I/O Operating LevelsMono connections Stereo connectionsConnecting to the inserts on an instrument amplifier Connecting to equipment with XLR inputs and outputsDigital Signal In, Analog Signal Out Analog Signal In, Digital 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 ControlsProgram mode Edit modeStore mode Description of the Basic ModesAudition mode Bypass modeChannel Level mode Basic operation Program mode Single Band Edit Basic operation Edit modeBand Solo Band Gain Cut/Boost Ranges LEDMultiple Band Edit Selecting an Edit GroupRelative Gain Display Proportional Gain MemoryBasics 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 Demonstration mode Real-time Analysis mode DEQ230D onlyHidden Modes Metering modesSetup mode Item button Function Displayed Options Default ValueButton 1 Master Level +/- 6 dB Button 2 Release Edit Group On/OffButton 4 Edit Time Out On/Off Button 3 Audition Automation On/OffButton 5 Lock On/Off Buttons 6-12 DEQ230D only Button 6 Midi Channel ALLButton 7 Midi Program Change On/Off Button 8 System Exclusive Transmit Send?Button 9 System Exclusive Receive Waiting Button 10 Midi Out/Thru Select Out/ThruButton 11 Sample Rate Select 44.1/48 Button 12 Force Analog Input Auto/AnalogButton combinations Hold Press ResultEqualization Artifacts DistortionNoise PhasingConstant Q vs. Variable Q What makes the DEQ230 unique?Variable Q Constant QMulti-band application and results Basics of Equalization Applications Rock Kick DrumVocal Air Tape Hiss RemovalEliminating Feedback Filtering effectsAnswering 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 Troubleshooting Care and MaintenanceCleaning Line Conditioners and ProtectorsTroubleshooting Troubleshooting IndexObtaining Repair Service Refer All Servicing to AlesisCustomers in the USA and Canada Customers outside the USA and CanadaThis page intentionally left blank Specifications DEQ230Audio Performance 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.