The loudspeaker shall be a multiple
driver, full-range system with
matched active equalization as
follows:
The transducer complement shall
consist of four (4) full-range environ-
mental drivers of 11.4 cm
diameter,
mounted vertically in
a faceted baffle.
Each driver shall have a rated imped-
ance of 1.6Ω and shall be wired in
series, resulting in a composite
speaker assembly nominal imped-
ance of 8Ω.
The loudspeaker system sensitivity
shall be
99dB-SPL in the 300Hz to
3kHz range and 91dB-SPL in the
90Hz to 16kHz range with
both
measurements referenced to a 1 watt
(2.83V) pink noise input at 1 meter.
The nominal horizontal beamwidth
shall be 120 degrees, and the nomi-
nal vertical beamwidth shall be 60
degrees. The
power handling capacity
of the loudspeaker
shall be 120 watts
continuous pink noise,
band-limited
from 90Hz to 16kHz.
The loudspeaker shall be provided
with a ducted vent system, tuned at
95Hz. The
input connectors of the 402
Series II loudspeaker
shall consist of
two parallel Speakon
®
NL4
recep-
tacles
.
The enclosure of the 402 Series II
loudspeaker shall be composed of
mica-
reinforced polyethylene copolymer
structural
foam.
Its outer dimensions
shall be 23.25"H x 8.1"W x 7.25"D (59
cm H
x
21 cm W x 18 cm D); its weight
shall be 15 lb (7 kg).
The loudspeaker shall be the Bose
402 Series II loudspeaker system.
System Configurations
Mixer/Preamp
PANARAY
®
system
digital controller
Power amplifier
402
loudspeaker EQ
402
CH1
CH2
CH2
CH1
CH1 CH2
402
CH2
CH1
Mixer/Preamp
Bose
®
power amplifier
402
(402)
CH2
CH1
CH1
CH2
402
(402)
CH1 CH2
(402)
(402)
Engineers’ and
Architects’ Specifications
Loudspeaker Configuration
The 402 Series II loudspeaker can be
used with the Bose 1600 and 1800
amplifiers. It is also compatible with
industry standard amplifiers rated for
4-8Ω loads.
The 402 speaker is packaged one per
carton.
response across the operating range
of the 402
®
Series II loudspeaker.
Using a controller or EQ card also
allows for crossover of the 402
Series II loudspeaker with a Bose
®
bass loudspeaker.
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