JBL 260 user manual Detailed Parameters Automatic Gain Control AGC

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Section 4

 

 

 

 

DriveRack

 

 

 

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Detailed Parameters

 

 

4.5 Automatic Gain Control (AGC)

The AGC is used to keep the average level of a signal at a constant level. This is done by selecting a desired Target output level and Window. The AGC keeps the signal within the Window about the selected Target by slowly adjusting the gain. The maximum gain that can be applied to the signal is selected by the Gain parameter. When the input signal falls below the Low Threshold the AGC releases the gain and returns to unity. This prevents the AGC from adding gain when there is no signal present and raising the system noise floor. High level signals are reduced by a fast limiter to prevent distortion by clipping. The AGC Threshold meters show what region of the AGC the input signal is in. The T (yellow) indicates the signal is within the Window. A + (red) indicates the signal is going into the Limiter. A – (green) indicates the AGC is adding maximum Gain and is at or below the Window. When the Threshold meter is off the signal is below the Low Threshold.

AGC: On/Off

Turns the AGC module On and Off.

Target: (Targ) -20 to 20 dB

The Target parameter defines where you would like the average level of the AGC output to be. If the average level of the signal rises above the Target the gain will be reduced. For signals with an average level below the Target the gain will be increased.

Gain: 1 to 20dB

This adjusts the maximum amount of gain that can be added by the AGC.

Window: 1 to 10dB

This adjusts the amount of variation in the output

Low Threshold: -60 to -30dB

The Low Threshold sets a lower limit to the AGC. This prevents the AGC from adding gain to low level signals or noise.

Attack: 0.20 to 5 Seconds

This adjusts how fast the AGC will increase gain.

Release: 30.0 to 1 dB/Second

This adjusts how fast the AGC will reduce gain.

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DriveRack® User Manual

 

 

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Contents DriveRack Important Safety Information Electromagnetic Compatibility Table of Contents DriveRackIntro Introduction DriveRack 260 FeaturesDefining the DriveRack 260 System Service Contact Info DriveRackIntroductionIntroductionDriveRack Warranty Section Getting Started Rear Panel Connections Getting Started Front Panel Getting Started Quick Start ConnectionsGetting Started Section DriveRack DriveRack DriveRack DriveRack DriveRack DriveRack Functions Editing Functions Basic Navigation Modes Effect Button Array OverviewEditing Functions Navigating the Pre-EQ -GEQ and PEQ Navigating the Crossover SectionEditing Functions Navigating the Other Section Navigating the Dynamics SectionEditing Functions Navigating the Delay Section Navigating the Utility/Meters SectionEditing Functions Navigating the Wizard Section Navigating the I/O SectionFunctions Configuration Functions Program DefinitionNavigating Factory Programs Selecting ProgramsEditing Factory Programs Navigation ModesConfiguration Functions Saving Factory Program Changes Store Program ReplacingConfiguration Functions Creating a User Configuration Signal PathSelect Link/UnlinkComp Select RouteSelect Link/Unlink Mono DLY 20 MS 810 ms Unused Select Link/UnlinkSaving Configuration Changes Route Name Output Ch2Detailed Detailed Parameters Pre-Crossover EQ 28 Band Graphic or 9-Band ParametricFeedback Eliminator Subharmonic Synthesizer Gate Detailed Parameters Automatic Gain Control AGC Crossover Detailed Parameters Notch FiltersPost-CROSSOVER PEQ Compressor/Limiter Threshold T -40 to +20dBu Ratio R 1.0 to Inf1Gain G -20 to +20 dB Auto On/OffLimiter On/Off Attack .01 to 200 m Sec per band or globalHold 0 to 500 m Sec per band or global Release 360 to 5 dB / Sec per band or globalAlignment Delay Input RoutingOutput Meters Utility LCD Contrast Auto EQ Plot Utilities/MetersLCD Contrast / Auto EQ Plot PUP Program/MuteZC Setup Panel Power Up Modes PUP Program Stored PUP Mute CurrentZC Setup Panel ZC-2 Boost CutOutput Panel 1 ZC-3 Select a No ChangeSet Security Level Pre EQ Low Panel ZC-4 Switch 1 2 3 No ChangeSecurity Password Edit High Password Edit Med Password Press Store to ChangeSet 260 Device Level High Password Enter PasswordProgram List/Program Change Prog Change Mode Program List Prog Lock Program ListINS a Comp o+ LIM 0+Zone Controllers Panel Output Trims NetPage Control Remote Control DriveWare PC Software GUISection Basic Operation DriveRack Remote Control ZC-Zone Controllers Zone Controller InstallationZC-1 & ZC-2 Zone Controller Wiring Section Diagram a Diagram B Diagram C Guide Application Guide Mono 4-Way w/ Two Aux ZonesHardware SoftwareApplication Guide Stereo Tri-amp Application Guide Stereo w/ four Aux Zones Application Guide Stereo Bi-amp w/ Dual Delay Page DriveRackAppendix Appendix Factory Reset Power Up Quick Key OptionsAppendix Specifications Analog InputsAppendix Auto EQ Optimization Tips Adjust Crossover Output Gains gain structureLook out for Modes Appendix Crossover Diagrams Main Speakers Power Amplifiers Appendix Program List/ Speaker Tunings/ Power Amp TuningsProgram List Appendix Block Diagram DriveRackAppendix aAppendix Input and Output Diagrams System Setup and Gain Structure Appendix Gain Level JumpersAppendix

260 specifications

The JBL 260 is a powerful and versatile loudspeaker that embodies the brand's renowned commitment to audio excellence. Known for its striking design and rich sound quality, the JBL 260 caters to both audiophiles and casual listeners alike, ensuring an immersive listening experience in any environment.

One of the standout features of the JBL 260 is its high-efficiency design, which allows it to deliver exceptional sound performance even in larger spaces. The speaker is equipped with a robust 6.5-inch woofer that provides deep, resonant bass, while a 1-inch soft dome tweeter ensures clear and detailed high frequencies. This combination results in a balanced sound signature that captures the subtle nuances of various music genres.

The JBL 260 employs advanced technologies such as Harman's proprietary Polished Surface Com Acoustic Design, which minimizes cabinet vibrations and resonances. This technology contributes to the overall clarity of the audio output, allowing for a more natural soundstage. Additionally, the Waveguide technology used in the speaker enhances the dispersion of sound throughout the room, ensuring that listeners can enjoy a consistent audio quality, regardless of their position.

Connectivity is another area where the JBL 260 excels. The speaker includes versatile connection options, such as Bluetooth, allowing users to stream music wirelessly from smartphones, tablets, or computers. This makes it incredibly easy to integrate the JBL 260 into modern home entertainment systems. With a range of inputs, including RCA and auxiliary ports, the speaker can accommodate various audio sources, making it a great choice for both casual listening and serious audio setups.

The design of the JBL 260 is both sleek and functional, with a modern aesthetic that fits seamlessly into any décor. Its sturdy construction not only contributes to its durability but also enhances sound quality by minimizing unwanted distortions. The speaker is available in various finishes, allowing users to choose a model that best suits their personal style.

In summary, the JBL 260 is a feature-rich loudspeaker that brings together advanced sound technologies, versatile connectivity options, and an attractive design. It stands out as an ideal choice for anyone seeking to elevate their audio experience, making it a solid investment for years to come.
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