Bose 901 Owner's guide - Page 15

Construction.

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ACTIVE EQUALIZER (TWO CHANNELS) Program Contour Controls. The normally flat radiated power spectrum can be adjusted, by means of three front panel switches, to yield twenty different frequency contours designed for compensation of recording techniques and room acoustics. Installation. The Active Equalizer is easily connected to any preamplifier, amplifier or receiver using the audio cables supplied. Construction. The Active Equalizer contains over one hundred components, including ten transistors, mounted on a military quality circuit board. Thirty of these are precision 1% and 5% tolerance compo nents to insure precise control of the entire audio spectrum in every production unit. Dimensions 2 13/16" high. 9 1/4" wide, 6 3/4" deep. 1' SO•100469

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ACTIVE
EQUALIZER
(TWO
CHANNELS)
Program
Contour
Controls.
The
normally
fl
at
radiated
power
spectrum
can
be
adjusted,
by
means
of
three
front
panel
switches,
to
yield
twenty
different
frequency
contours
designed
for
compensation
of
recording
tech-
niques
and
room
acoustics.
Installation.
The
Active
Equalizer
is
easily
connected
to
any
preamplifier,
amplifier
or
receiver
using
the
audio
cables
supplied.
Construction.
The
Active
Equalizer
contains
over
one
hundred
components,
including
ten
transistors,
mounted
on
a
military
quality
circuit
board.
Thirty
of
these
are
precision
1%
and
5%
tolerance
compo
-
nents
to
insure
precise
control
of
the
entire
audio
spectrum
in
every
production
unit.
Dimensions
2
13/16"
high.
9
1/4"
wide,
6
3/4"
deep.
1'
SO•100469