Altec Lansing 902-8T User Manual
Altec Lansing Acoustics
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902-8А/902-16А/902-8Т
COMPRESSION DRIVER
LOUDSPEAKERS—PRELIMINARY...
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DESCRIPTION
The
Altec
902-8A,
902-16A
and
902-8T
High
Frequency
Driver
Loudspeakers
are
designed
for
professional
sound
applications
requiring
outstanding
production
of
sound
over
a
wide
frequency
range
at
substantial
power
levels.
Such
conditions
are
fulfilled
with
high
efficiency
and
uni
form
response
from
1200
Hz
(902-8A,
902-16A)
or
500
Hz (902-8T) to 20,000 Hz.
These
drivers
furnish
the
realistic
sound
production
demanded
by
theatres
and
music
halls,
portable
concert
sound
systems
and
playback
systems
when
used
in
con
junction
with
Altec
51
IB
(500
Hz),
81
IB
(800
Hz),
or
MR931-12
(1200
Hz)
horns,
appropriate
Altec
dividing
networks
and
Altec
professional
low
frequency
loudspeakers.
Each
902-type
driver
uses
a
voice
coil
of
1%-inch
dia
meter,
edge
wound
with
aluminum
ribbon
and
coupled
to
an
aluminum
tangential
diaphragm.
The
entire
diaphragm
and
voice
coil
assembly
is
field
replaceable;
no
special
tools
are
required.
The
902-8A
(8
ohms)
and
the
902-16A
(16
ohms)
are
designed
to
operate
at
a
crossover
fre
quency of 1200 Hz. The 902-8T (8 ohms) is fitted with a
loading
cap
to
operate
at
crossover
frequencies
down
to
500 Hz.
Altec's
new
Tangerine®
radial
phase
plug*
refines
the
technology
of
proper
phasing,
ensuring
maximum
high
frequency
reproduction
while
maintaining
smooth
overall
response.
The
drivers
are
capable
of
uniform,
peak-free
reproduction
throughout the range of human hearing.
SPECIFICATIONS
Power Capacity:
10 watts continuous pink
noise from 1200 Hz to 20 kHz
(902-8A, 902-16A) or from
500 Hz to 20 kHz (902-8T).
Measurements made on Altec
511 В horn.
Frequency Response:
902-8A, 902-16A—
902-8T—
1200 Hz to 20 kHz
500 Hz to 20 kHz
Pressure Sensitivity:
104 dB SPL measured 4' from
mouth of Altec 511В horn
with 1 watt input of pink
noise, band limited from
1200 Hz-5000 Hz
Minimum Impedance:
8 ohms (902-8A, 902-8T)
16 ohms (902-16A)
Construction:
Magnet—
Ferrite, 40 ounces
Flux Density—
18,000 gauss
Magnetic
Structure Weight—
5У4 lbs. (2.61 kg)
Diaphragm—
Aluminum tangential
Voice Coil—
Edgewound aluminum ribbon
Dimensions:
5
У
2
" (13.97 cm) diameter
2Ув" (6.67 cm) deep, less
mounting studs
Weight:
6 lbs., 6 oz. (2.90 kg)
Finish:
Gray "Hammertone" enamel
with black rubber boot
Mounting Data:
Two У4"-24
X
1" studs, 180°
apart on 1У
2
" centers
*Reg. U.S. Patent No. 4,050,541; Foreign patents pending.