Meyer Sound QuickFly Especificações descarregar pdf (Página 17)

MG-MICA MULTIPURPOSE GRID AND ACCESSORIES

PN: 05.147.034.01 A

Page 17 of 44

Meyer Sound Laboratories Inc.

www.meyersound.com

T: +1 510 486.1166

F: +1 510 486.8356

USING MAPP ONLINE PRO TO DETERMINE THE CENTER OF GRAVITY (COG)

OF THE ARRAY

MAPP Online Pro is a powerful acoustical prediction software that is an invaluable tool when designing a system.

This software is a cross-platform, Java-based application for accurately predicting the coverage pattern, frequency

response, impulse response, and maximum SPL output of single or arrayed Meyer Sound loudspeakers. MAPP Online

Pro facilitates conﬁguring arrays and, optionally, deﬁnes the environment in which they will operate — including air

temperature, pressure, and humidity, as well as the location and composition of walls. You can ﬁnd MAPP Online at:

www.meyersound.com/products

NOTE: In order to use MAPP Online Pro, you will need to register by clicking “Apply for MAPP Online”

on the Web site listed above. After registration and upon approval, an e-mail will be sent to you with

a user name and password along with the address for the Web site where you can download MAPP Online.

Online instructions will guide you through the download and setup process.

In addition, MAPP Online Pro displays a wealth of information related to the rigging of the system:

■ Location of the MICA’s array center of gravity. This information is critical in the determination of the load rating of

the MG-MICA.

■ Total weight of the array.

■ Distribution of the load on the front and rear points.

■ Height and depth of the array.

Use the following procedures in MAPP Online Pro as you design the array and verify that it meets the conditions for

the desired load ratings in Tables 2 and 3, on pages 19 and 20 of this document.

Once the MICA array has been designed from the acoustical point of view, the rigging information displayed on the “In-

sert Loudspeaker System” dialog box needs to be compared to the conditions in Tables 2 and 3. This will give informa-

tion about whether the use of the grid under those conditions will meet the load rating and safety factor.

Please follow the next steps using MAPP Online Pro:

1. Open the dialog Conﬁgure > Insert Loudspeaker System and create the array below the MG-MICA grid. Select

the MICA Forward or MICA Rearward grid position, depending on whether more downtilt or more uptilt is desired

as a starting place. Insert the necessary quantity of loudspeakers, set the initial splay angles, and set the initial grid

height and positioning. If necessary, consult the MAPP Online Pro manual for further information.

2. Change splay angles, grid angle and height until the design meets the acoustical requirements.

3. Depending on the array conﬁguration, the Center of Gravity line will be passing through Zone 1 (Green), Zone 2

(Yellow), Zone 3 (Orange), or completely behind or in front of the grid. This information is displayed at the bottom of

the Insert Loudspeaker System dialog box.

4. Consult Tables 2 and 3 to determine the maximum load (number of enclosures) permissible for a 5:1 or 7:1 safety

factor for each zone.

5. If the conditions (Zone and tilt angle) are not met, the array conﬁguration needs to be changed until the conditions

are met.

6. Click the Select button, click on the array to select it, and then go to the Edit Loudspeaker System dialog. You can

make changes to the splay angles, grid angle and trim height and conﬁguration (front or rear) until the grid angle

and COG falls in a zone needed to meet the load ratings needed for the particular design.

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