Bogen NEAR A-Series A12 user manual

User manual for the device Bogen NEAR A-Series A12

Device: Bogen NEAR A-Series A12
Category: Speaker System
Manufacturer: Bogen
Size: 0.94 MB
Added : 11/29/2013
Number of pages: 8
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Summaries

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Abstracts of contents
Summary of the content on the page No. 1

OWNER’S GUIDE
MODEL A12
A-SERIES ENVIRONMENT-PROOF
HIGH-OUTPUT/LONG-THROW LOUDSPEAKER
© 2008 Bogen Communications, Inc.
Specifications subject to change without notice.
54-2172-01B 0812

Summary of the content on the page No. 2

PACKAGE CONTENTS Near A12 Speaker (1) Mounting Knobs (2) Yoke (1) Rubber Friction Disk (2) Safety Attachment Bolt (1) Owner’s Guide (1) SPEAKER ORIENTATION RIGHT WRONG The NEAR A12 is acoustically designed to operate in a vertical orientation with the NEAR logo right side up. This orientation will provide 90 degrees of hori- zontal coverage and 45 degrees of vertical coverage. WRONG RIGHT The A12 is a ported speaker, designed to shed water, and includes a unique water-repellent scrim. This scri

Summary of the content on the page No. 3

YOKE INSTALLATION WALL MOUNT 90° WALL/CEILING MOUNT (Secure both ends) After selecting the speaker location, securely attach the yoke to the surface. An Adjustable Tilt-Mount Adapter (TMA812) is available to provide various tilt an- gles. The TMA812 allows attachment to walls and posts. WARNING: Mounting brackets must be secured in accordance with local codes. If in doubt, consult a professional contractor to determine the integrity of the structure to which the bracket will be attached. When re

Summary of the content on the page No. 4

UNDERPOWERING VS. OVERPOWERING Surprisingly, speaker damage can be caused by amplifiers with too little power. An underpowered, overdriven amp sends heavily distorted, clipped audio to the speakers. This can damage the high-frequency drivers. Clipping is usually audible; it may vary from a harsh sound to a fuzzy or blurry sound. If you hear clipping at loud volume levels, turn down the volume until the distortion is no longer present. On the other hand, overpowering a speaker can cause mechanic

Summary of the content on the page No. 5

70V SYSTEM CONFIGURATION When designing a 70V system, the total of all the power tap settings of all the connected speakers cannot exceed the output power of the 70V amplifier. The example below shows five speakers connected in parallel. Using the 16W termi- nals, an amplifier is needed with a power rating of at least (5) (16) = 80W. A × good rule of thumb is to select an amplifier with 20% more power; in this case, an amplifier that delivers about 100W. Shown with jumper in place From amp + To

Summary of the content on the page No. 6

Example of Low-Impedance System Configuration AMPLIFIER WITH DUAL 4 OUTPUTS 16 16 16 16 16 16 16 16 4 SPEAKERS PER CHANNEL CONNECTED IN PARALLEL Jumper stored here for safe keeping _ From amp + _ To next speaker + Jumper has been removed Total load impedance can be calculated this way: 1 = Total Load Impedance (1/Rs + 1/Rs ... 1/Rs) Rs is the impedance of the speaker, for the A12 it is equal to 16 ohms. Note: If all speakers are the same Rs , it is simply: Rs = Total Load Impedance # of Speaker

Summary of the content on the page No. 7

SPECIFICATIONS A12 * Frequency Response (-10 dB) 55 Hz to 17.5 kHz Dual Metal-Composite 6-1/2" Cone Woofers, LF Driver Patented MLS Voice Coil Guidance System Weatherproof 1.9" Mylar Diaphragm HF Driver Constant Directivity Horn, 1" Exit Sensitivity (1W/1M) 94.5 dBspl Dispersion 90° Horizontal, 45° Vertical Impedance Ratings Low (16 ohms) / High (70V) Power Input (Max.) 225W @ 16 ohms; 128W @ 70V Power Settings (in watts) 70V: 128, 64, 32, 16, 8 Grille Material Perforated Polypropylene Enclosu

Summary of the content on the page No. 8

50 Spring Street, Ramsey, New Jersey 07446, USA 201-934-8500 FAX: 201-934-9832 www.bogen.com


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