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From the legendary Bose
®
901
®
to the Professional 802
®
Bose first demonstrated the advantages of
full-range cone driver arrays with the revolutionary
901 Direct/Reflecting
®
high-fidelity loudspeaker.
Based on extensive research in the fields of speaker
design and psychoacoustics, the groundbreaking
speaker system won immediate acclaim for its
extraordinary ability to more closely approximate the
essence and emotional impact of a live concert.
After noting that professional musicians were using
Bose 901 speakers as PA speakers, the company
developed the Bose 800, which maximized sound
quality through use of eight 4.5-inch drivers, and formed the Bose Professional Division.
This same acoustic design was refined in the Bose Panaray 802 and became one of the
world’s best-selling sound-reinforcement loudspeakers.
The extraordinary Bose 4.5-inch full-range cone driver
The key technology of the 802
loudspeaker is the full-range cone
driver. Years of research have optimized
the combination of power handling,
efficiency, smooth frequency response,
and wide dispersion. More than 30 years
and millions of units in production have
proven this is one of the most reliable
acoustic transducers in the world, with 99.9% still operating after 5 years.
The Bose 4.5-inch full-range cone driver pioneered many innovations in transducer
design, including aluminum helical voice-coil wire to improve efficiency, polyester-resin
frames for more precise manufacture, and Kevlar
®
impregnated cones to resist outdoor
environmental conditions.
Second generation: the Bose 2.25-inch full-range cone driver
With a desire to improve the high-frequency summation in column
line arrays, Bose developed the second generation full-range cone
driver, with a 50% reduction in diameter. The 2.25-inch size provides
increased horizontal dispersion and higher frequency summation
for vertical arrays. Additionally, the smaller form factor allows denser
packing of transducers for increased output in small enclosures. The
first Bose Professional product to utilize the 2.25-inch full-range
driver was the Panaray MA12, which launched a resurgence in the
column line array category by providing exceptional vocal clarity
in difficult acoustic spaces and packaging the drivers in a slim
enclosure that visually blends with any décor.
Latest advancement: 2.25-inch cone arrays with coaxial woofers
The most recent performance advancement for Bose Professional
cone-array loudspeakers combines the advantages of 2.25-inch
cone drivers in mid/high column line arrays with coaxially mounted
woofers for increased low-frequency response and maximum
output level.
Current available products
Today, Bose full-range cone transducers continue to be the mainstay of Bose Professional’s
most popular Panaray and FreeSpace
®
loudspeaker lines. Extending from small 16 watt
models, such as the FreeSpace DS 16 loudspeaker, to the F1 Flexible Array Loudspeaker,
Bose full-range cone transducers bring outstanding coverage and frequency response to
nearly any premium background/foreground application.
Panaray
®
Sound-Reinforcement Loudspeakers
Panaray sound-reinforcement loudspeakers feature full-range cone transducers in proprietary array configurations that provide exceptional reliability in adverse conditions,
while delivering natural vocal clarity. For more than five decades, Bose
®
has been improving the performance of full-range cone transducers to provide unmatched reliability,
natural sound quality, and wide coverage patterns. Available in both point-source and column line array acoustic designs, Panaray loudspeakers cover a wide variety of
installed-sound venues, for indoor and outdoor locations.
