Bose 501 User Manual

——а Ҹу.
VI.
Technical
information
A. SPECIFICATIONS
1. Spatial Characteristics
The
Model
501
utilizes
Asymmetrical
Design
for
opti-
mum
stereo
reproduction
with
rear
and
side
wall
reflec-
tions.
The
tweeters,
angled
toward
the
rear
walls,
reflect
sound
energy
into
the
main
listening
area.
A
Direct
Energy
Control
provided
with
the
outward-directed
tweeter
al-
lows
control
of
the
spatial
characteristics
of
the
speaker
system.
The
Model
501
is
designed
in
mirror-image
pairs
for
optimum
stereo
reproduction.
2. Speaker Configuration
VVOOFER
—
One
ten-inch
acoustic
suspension
vvoofer
utilizing
a
long-throvv
1%-inch
diameter
voice
coil
with
16-
ounce
magnet.
Linear
high-excursion
suspension
system
provides
high
output
capability.
TWEETER
—
Two
three-inch,
wide-range
tweeters
with
extended
low-frequency
response
for
use
with
Direct
Energy
Control.
Flat
Total
Power
Radiation
to
over
15
kHz.
ENCLOSURE
—
A
walnut
grain
vinyl
clad,
floor-standing
loudspeaker
with
acoustic
suspension
design
and
acous-
tically
transparent
side
panels.
Shipping
Weight:
48
Ibs.
Speaker
Weight:
42
165.
Speaker
Dimensions:
14%
"W
x
24"H
x
14%"D
3. Impedance
The
impedance
of
the
Model
501
speaker
system
is
con-
servatively
rated
at
4
ohms.
However,
since
the
impe-
dance
of
the
Model
501
is
substantially
above
4
ohms
over
all
but
a
small
portion
of
the
frequency
range,
high
quality
receivers
can
operate
an
additional
pair
of
8-ohm
speak-
ers
or
asecond
pair
of
501’s
(connected
in
parallel)
with
no
difficulty.
4. Power Handling
The
minimum
recommended
power:
20
watts
rms
per
channel.
Amplifiers
rated
over
50
watts
can
be
used
with
the
Model
501;
however,
each
channel
should
be
fused.
See
Section
IV.,
B.3.
Fusing
Instructions.
. IN CASE OF DIFFICULTY:
If
you
suspect
a
problem
with
one
of
your
Model
501s,
please
take
a
few
minutes
of
your
time
to
determine
whether
the
de-
fect
is
in
your
Model
501
or
in
some
other
portion
of
your
high-fidelity
system.
If
one
speaker
sounds
less
brilliant
than
the
other,
make
cer-
tain
the
Direct
Energy
Control
is
correctly
positioned.
If
one
speaker
sounds
defective,
do
not
switch
the
speaker
cables,
as
this
may
damage
the
speaker."Instead,
disconnect
the
defective
speaker's
wire
at
the
amplifier
output
and
re-
connect
to
the
amplifier
channel
operating
correctly.
If
the
speaker
system
that
sounded
defective
now
plays
correctly,
the
difficulty
is
not
in
the
speakers
or
in
the
speaker
wiring.
If
the
trouble
appears
in
both
speakers,
connect
your
Model
501s
to
another
amplifier
that
is
operating
properly.
If
the
speakers
now
operate
correctly,
the
difficulty
is
not
in
the
speakers
or
in
the
speaker
wiring.
If
the
trouble
persists
in
one
or
both
speakers,
contact
your
dealer.
He
will
verify
the
defect
and
will
arrange
for
service
at
one
of
our
factory-authorized
service
agencies,
or
by
the
BOSE
factory.
BOSE
Corporation
will
make
every
effort
to
remedy
any
problem
within
the
terms
of
the
warranty
at
min-
imum
inconvenience
to
you.
. CARE AND MAINTENANCE
The
Model
501
speaker
system
has
a
walnut
grain,
vinyl
cab-
inet
with
a
dark
brown
asymmetrically-designed
grille
panel.
The
vinyl
veneer
can
be
cleaned
by
wiping
with
a
soft
damp
cloth
and
mild
detergent.
The
grille
cloth
requires
no
care
al-
though
it
may
be
carefully
vacuumed
if
necessary.
The
in-
ternal
components
of
the
Model
501
have
been
designed
for
a
long,
maintenance-free
life.
If
used
properly,
the
Model
501
should
provide
many
years
of
enjoyment.
11

Bose 501 Specifications

General

Brand	Bose
Model	501
Category	Speaker System
Language	English