Bose Panaray MA12 Technical Foundation & Discussion

Bose
®
MA12™ Modular Array: Technical Foundation & Discussion
April 2002, © Bose Corporation, All Rights Reserved
Page 3 of 36
Bose
®
MA12 Modular Array:
Technical Foundation & Discussion
Morten Jørgensen and Kenneth Jacob, Bose
®
Professional Systems Division
Summary
THE Bose MA12™ modular array takes advantage of the properties of cylindrical
waves to meet customer requirements that until now could only be met with
loudspeakers flown and aimed in more elaborate and expensive designs. With only
two dimensions of dispersion rather than the three of the more common spherical
waves, the sound from cylindrical waves diminishes much more gradually with
distance from the source. As a consequence, listeners experience relatively little
change in sound level from far away from the
MA12 to literally right next to it. The
same gradual change in sound with distance makes the
MA12 less susceptible to
feedback from microphones in close proximity. The radiation pattern of the
MA12 is
wedge-shaped: wide from side-to-side but sharply confined to the top and bottom of
the array. The vertical radiation virtually shuts off above and below the speaker. As a
result, much less reverberation is generated because almost no sound is radiated
upwards to distant surfaces in the upper part of the room. The result is noticeably
better clarity and intelligibility. The ultra-thin shape of the
MA12 means it is easy to
hide; it may be the most unobtrusive speaker yet developed given its exceptionally
high output and full, balanced frequency response. The fact that the
MA12 is placed
at ear level (so that listeners are confined within its wedge-shaped radiation pattern)
means that it can usually be installed for a fraction of the cost of more elaborate
‘flown’ loudspeakers and loudspeaker clusters. Finally, it can be matched to a low
frequency enclosure (Bose Panaray
MB4) when extended bass performance is
needed. Taken together, these features and advantages result in a product that
represents an important new tool for satisfying the most basic and important customer
requirements in a wide range of common applications.

Bose Panaray MA12 Specifications

General

Product color	Black
Recommended usage	-
Driver diameter	64 mm
Number of drivers	12
Audio output channels	- channels
Mid-range driver diameter (imperial)	2.25 \
Impedance	8 Ω
Sensitivity	88 dB
Frequency range	100 - 16000 Hz
RMS rated power	300 W
Peak Music Power Output (PMPO)	1200 W
Bluetooth	No
Connectivity technology	Wired

Weight and Dimensions

Depth	128 mm
Width	105 mm
Height	984 mm
Weight	8500 g