Bose Panaray 502A Manual - Página 2

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System Description

The Bose

Panaray

Sound System is a

fully modular system which represents

significant advances in loudspeaker

array, low frequency transducer, and

system control technology. The basic

Panaray system consists of two 502

controlled arrays, one 502B Acousti-

mass

bass enclosure, and one 502C

system controller, and provides up to

122dB peak SPL (at 1 meter, driven with

maximum recommended amplifier

power) over the 55Hz to 15kHz range.

Extensive research has yielded new

technology in array design which, using a

proprietary arrangement of Bose 4.5 inch

full range drivers, results in tightly

controlled horizontal and vertical

beamwidth, and extemely smooth band-

to-band directivity. The system also

features a new, compact low frequency

enclosure using Bose-patented Acousti-

mass technology. The Panaray sound

system is a highly aesthetic voice or

music sound reinforcement system for

permanent audio installations in theaters,

auditoriums, churches, nightclubs,

transportation facilities, and other places

where people gather to be entertained,

enlightened, or informed.

Component Description

The 502A Controlled Array is a mid-high

frequency component of the Bose

Panaray system. It features five new-

design 4.5" (11.4 cm) helical voice coil

drivers in a slim, elegantly-designed

enclosure. The result is natural sounding,

extremely even coverage at all frequen-

cies over the entire listening area. It can

be used either with the 502B Acousti-

mass bass enclosure for full frequency

sound reinforcement, or separately for

voice-only reinforcement systems. The

100

Directivity (Q)*

100

* Directivity is the ratio, in each one-third octave band, of the average response in the nominal 120º x 70º polar window, to the average response

over the entire solid angle about the source.

Beamwidth*

(-6 dB point)

* Beamwidth is the -6dB point, in each one-third octave band, on a polor plot representing the

average within ten degrees of the horizontal and vertical planes about the array.

502A array is designed for installability in

a variety of configurations, using its

integral 10x safety-rated attachment

points and Bose suspension and mount-

ing accessories. The baffle and rear panel

are constructed of high strength structural

foam, and the speaker grille is construct-

ed of a durable perforated steel. It is

available in both Professional Gray and

Arctic White, and both the enclosure and

grille are fully paintable to match interior

decor.

The 502B Acoustimass bass enclosure

uses a single high power handling, high

reliability 12" (30 cm) woofer. This new

Bose-designed low frequency transducer

features a high temperature 4" (10.2 cm)

voice coil, cast aluminum basket, and a

high durablility rubber surround. The

502B provides clear, deep bass reinforce-

ment from a small enclosure, as a result

of Bose-patented Acoustimass speaker

technology. Its low crossover frequency

results in a non-localizable sound source,

which allows it to be unobtrusively install-

ed apart from the 502A arrays. The enclo-

sure is fitted with 10x safety-rated attach-

ment points (top and bottom) for mount-

ing in a variety of orientations.

500

Directivity vs. Frequency of 502A Controlled Array

300˚

200˚

nominal horizontal

100˚

80˚

nominal vertical

60˚

40˚

30˚

20˚

10˚

100

500

1,000

Beamwidth* vs. Frequency of 502A Controlled Array

Two-point suspension is easy to

accomplish using the Bose CSB-5B

suspension bracket. The 502B is

available in both Professional Gray and

Arctic White, and is covered with a

scratch resistant vinyl, which can be

painted to match any decor.

The 502C systems controller is a single

rack space device which provides

cross-over functions, active electronic

equalization, and dual channel signal

processing for both the 502A and

502B. It features -10/+4dB-V input

sensitivity switches, all-balanced inputs

and outputs, -18/+3dB bass level

control, bass mono sum switch,

automatic output muting on turn-off,

and a secure, rear-panel operating

mode switch.

An optional plug-in card is available for

the 502C which allows 502A controlled

arrays to be combined in a sound

system design with the Bose Acoustic

Wave

The Panaray system includes a com-

plete line of accessories for suspending

or mounting both the 502A and 502B in

a wide variety of configurations.

1,000

5,000

10,000

Frequency [Hz]

Cannon system.

5,000

10,000

Frequency [Hz]