Bose Panaray 502A Manual - Page 2

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Bose Panaray 502A Manual
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)*
10
1
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)
®
A
* 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]