Db TI 385 d&b Line array design Manuel d'utilisateur

TI 385 (6.0 EN)d&b Line array design, ArrayCalc V8.x

5. The Q-Series line arrayThe Q1 is a compact and lightweight line array cabinetproviding a 75° constant directivity coverage in thehorizontal plane d

Q1/Q-SUB/J-SUB crossover setupPlease note that a combined ground stack consisting ofQ-SUB and J-SUB cabinets will only provide a consistentdirectivity

6. The T-Series line arrayThe T10 is a very compact loudspeaker system which canbe used both as a line array and as a high directivity pointsource spe

7. The xA-Series line arrayThe 10AL and 10AL-D line array modules of the xA-Serieshave been specifically designed for fixed installations withvisually

8. The d&b point sourcesFrom Version V7x.x, a range of d&b point sourceloudspeakers is available for integration into a project. Allcurrent to

10. ArrayCalcFor both acoustic and safety reasons all d&b line arraysmust be designed using the d&b ArrayCalc simulation tool.ArrayCalc also p

10.3 ArrayCalc menu options and ToolbarThe drop-down menus "File", "View", "Sources","Extras" and"Help&qu

10.4 ArrayCalc workspaceThe workspace is sub-divided into seven pages givingaccess to the various data input tables and calculationresults:The usual p

A superelliptic listening plane starts with a span of360°and can be moved, rotated and modified to anypossible shape of an ellipse by dragging its sta

Lock/Show/Transparent/Color: Obstacles show thesame behavior as described above for the listening planes.Obstacles are shown in the Venue editor, the

Contents1. Introduction...42. The J-Series line array...42.1 Number of

Name: Each listening plane in ArrayCalc requires aunique name. Position center: This is where you start to measure thevenue. Specify the height (z) of

HeadlineIn each headline of the array settings dialogs, the name ofthe respective array can be edited directly by clicking onthe text on the left.The

Process:Opens the ArrayProcessing dialog where the target leveldistribution can be defined and the related ArrayProcessingdata can be calculated. Up t

Usually the distances to the audience that an array has tocover decrease from the top to the bottom of a column,consequently it is desirable to gradua

10.7.4 Mechanical load conditions for arrays WARNING!Potential risk of personal injury and/or damage to materials.Never set up an array which exceeds

V, Y and Q Flying adapterIf a small V, Y or Q-Series array allows the optional use ofthe Z5385 V Flying adapter/Z5394 Y Flying adapter/Z5156 Q Flying

10.7.8 SPL plot and signal selection for arraysThe SPL plot shows the direct sound level vs. distance fortwo frequency bands or alternatively for a br

12-deep J8/J12 setup, high directivityIn the second example the system is tuned the opposite wayin order to adapt it to a critical acoustic environmen

At lower humidity values absorption by air increasestherefore the distances at which the respective HFC settingsprovide a correct equalization will be

10.8 Point sourcesIn the Point sources dialog you can define the system,number, type and orientation of the selected point sourcecabinet per group.Poi

11.2 How does it work?...4911.3 ArrayProcessing workflow...

Group controls CUT and CPLControls for functions that must have the same settings forall group members (CUT and CPL) are provided ascommon controls fo

Attenuation balloonThe diagram displays the 3D polar plot of the selectedloudspeaker in the form of an attenuation balloon oralternatively the project

This procedure allows you to modify setup parameters assoon as a certain result or behavior is perceptible withouthaving to wait for the calculation t

50 Hz mapping L/R subwoofer setupA common approach to change this behavior is to add anadditional center source. A look at the SPL mapping of a L/C/R

It is also clearly visible that the behavior is identical in thedirection of the audience area as well as in the direction ofthe stage.Curving the arr

If they are well arranged, this allows for very wide arraydispersions while maintaining low on-stage levels.10.10.6 SUB array settingsSUB array dialog

SUB array group controlsDepending on the type of subwoofers selected, groupcontrols are available which define the main amplifiersettings for the arra

Export/import of SUB array settingsYou can export defined SUB array settings to an ArrayCalcdescription file (*.dbesa). This file including the export

Polar diagramUse the Alignment page to calculate the correct timealignment between the SUB array and a selectable flownarray with the help of a phase

In this example, the left sides (L) of the paired arrays weretaken as a basis because they are closer to the test pointthan the right sides. The peaks

1. IntroductionThis Technical Information paper will explain the procedurefor designing and tuning d&b J, V, Q, T and xA-Series linearrays, point

Aligning a L/R subwoofer setupThe delay alignment tool can also be used to align L/Rground stacked subwoofers to any other source. Set thenumber of su

A mapping with a higher resolution would dramaticallyincrease calculation time while providing minimumadditional information.Here you can also set the

10.13 Amplifiers pageThe Amplifiers page of ArrayCalc provides a fast andconvenient way to configure the amplifiers and the patch ofthe simulated syst

Total number of amplifierArrayCalc displays the total number of amplifiers used inthe currently open patch dialog. To obtain the total numberof all am

10.15 Rigging plot pageAn additional page that displays all mechanical informationsuch as weights, load conditions, rigging points anddimensions of li

Splay setting of the lowest cabinetJ and V-Series arrays are always mounted on theirappropriate Flying frames. The angle options for the lowestcabinet

This is useful when small arrays without additionalsubwoofers are used for full-range coverage. Positive CPLwill reduce system headroom.Frequency resp

10.19.3 Horizontal arrayIf multiple J/V/Y/Q/T-Series columns or any combination ofthem are used per side, the arrays should be time-alignedat a meanin

11. ArrayProcessingArrayProcessing (AP) is a feature to calculate and designthe holistic behavior of a line array. It is an additionalfeature to enhan

ArrayProcessing can eliminate these issues by providing aconsistent frequency response throughout all listeningpositions. The resulting effect is that

2.2.1 J-SUB ground stacksUsing J-SUB cabinets in L/R ground stacks providesmaximum system efficiency due to the ground coupling ofthe cabinets.2.2.2 J

User parametersThe user can specify a desired level distribution along thelistening profile. This is done in a simple way by specifyingthe level drop

ArrayProcessing sets the target frequency response of theapplied system to its original reference response. Theoptional CUT mode functions as usual: t

Air absorption:Each ArrayProcessing slot has its own air absorptionsettings, which will be taken into account for theoptimization.Note: The Bypass slo

TI 385 (6.0 EN) d&b Line array design, ArrayCalc V8.x Page 53 of 54

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3. The V-Series line arrayThe V-Series consists of three different loudspeakers: the V8and V12 loudspeakers and the V-SUB subwoofer. The V8and V12 are

3.2.1 V-SUB ground stacksUsing V-SUB cabinets in L/R ground stacks providesmaximum system efficiency due to the ground coupling ofthe cabinets.3.2.2 V

4. The Y-Series line arrayThe Y-Series line array consists of three differentloudspeakers: the Y8 and Y12 loudspeakers and the Y-SUBsubwoofer. The Y8

4.2.1 Y-SUB ground stacksUsing Y-SUB cabinets in L/R ground stacks providesmaximum system efficiency due to the ground coupling ofthe cabinets.4.2.2 Y