Technics SB-AS40 User manual
Teclmics
Active
subwoofer
system
SB-AS40
Operating
Instructions
Bsjtore
connecting
operating
or
ei%J
5
ting
this
product,
please
read
these
ins
1
1
jufions
conioerely
Please
save
this
manual
Dear
customer
Thanh
you
for
purchasing
this
Technics
product
For
optimum
performance
and
safely.
please
read
these
instructions
carefully.
WARNING;
TO
REDUCE
THE
RISK
OF
FIRE
OR
ELECTRIC
SHOCK
;
DO
NOT
EXPOSE
THIS
APPLIANCE
TO
RAIN
OR
MOISTURE.
Supplied
accessories
Speaker
lost
(4
pcs,:
Stereo
connection
cable
(RKAOO&1-K1)
'.1
PC-KRJL2P002B3G)
Use
■
l
i
mners
indicated
in
parentheses
when
asking
lor
replace¬
ment
parts
I
Only
lor
U:S.A.)
t
o
i
:
i
de
■
ecce-i-son
es
cai
i
MSC
Accessory
Crept.
1
-900-332.-o36B
The
model
number
ana
serial
number
of
this
product
can
ba
found
op
eiliipr
ihe
back
or
the
bottom
ol
the
un
I
Please
note
them
n
the
space
provided
iielow
arid
retain
then
rpr
future
reference
MODEL
MUM
BE
R
...SB
:
A&40^
.
SERIAL
N
U
MB
ER...-.—...
■■■■
.
User
memo;
_
DATE
OF
PURCHASE
_
_
DEALER
NAME__
DEALER
ADDRESS
_
TELEPHONE
NUMBER
CAUTION:
TO
PREVENT
ELECTRIC
SHOCK
MATCH
WIDE
SLADE
OF
PLUG
TO
WIDE
SLOT.
FULLY
INSERT.
RISK
OF
ELECTRIC
SHOCK
IK)
NOT
OPEN
CAUTION
TO
REDUCE
THE
RISK
OF
ELECTRIC
SHOCK,
DO
not
REMOVE
SCREWS.
NO
USER
^SERVICEABLE
PARTS
INSIDE
REFER
SERVICING
TO
QUALIFIED
SERVICE
PERSONNEL
CAUTION
A
A
Tiiy
lighting
flash
wim
arrowhead
symbol
wiibin
an
equilateral
triangle,
is
Intended
to
alerl
the
user
iu
the
presence
cF
jninsolatcd
'dflrvgotous
vahage"
wiivifl
I
he
produci'a
erffiiDsure
lhar
may
be-
o
1
-ufic
em
magnitude
to
Constitute
a
'H*
cl
electee
sheet-
m
parsons.
Tha
esdamattor
pgirn
wjthln
an
equilateml
-nsrrgia
is
intended
to
a:erl
I
he
u&ei
to
me
presence
oi
impurtenl
operating
arm
main
lenancs
(servicing!
instructions
in
ins
lftera1uT&
acoohnpanying
’hr
appliance
l
~P~l
PC'
RQTJ0025-1
Precautions
Before
using
this
unit
please
read
these
operating
instructions
care¬
fully.
Take
special
care
to
follow
the
warnings
indicated
on
the
unit
itself
as
well
as
the
safety
suggestions
listed
below.
Afterwards
keep
them
handy
for
future
reference.
Safety
_
1.
Power
Source
—The
unit
should
be
connected
to
power
supply
only
of
the
type
described
in
the
operating
instructions
or
as
marked
on
the
unit.
2.
Polarization
—If
the
unit
is
equipped
with
a
polarized
AC
power
plug
{a
plug
having
one
blade
wider
than
the
other),
that
plug
will
fit
into
the
AC
outlet
only
one
way.
This
is
a
safety
feature.
If
you
are
unable
to
insert
the
plug
fully
into
the
outlet,
try
reversing
the
plug.
If
the
plug
should
still
fail
to
fit,
contact
your
electrician
to
replace
your
obsolete
outlet.
Do
not
defeat
the
safety
purpose
of
the
polarized
plug.
3.
Power
Cord
Protection
—AC
power
supply
cords
should
be
routed
so
that
they
are
not
likely
to
be
walked
on
or
pinched
by
items
placed
upon
or
against
them.
Never
take
hold
of
the
plug
or
cord
if
your
hand
is
wet,
and
always
grasp
the
plug
body
when
connecting
or
disconnecting
it.
4.
Nonuse
Periods
—When
the
unit
is
not
used,
turn
the
power
off.
When
left
unused
for
a
long
period
of
time,
the
unit
should
be
unplugged
from
the
household
AC
outlet.
Installation
_
Environment
1.
Water
and
Moisture
—Do
not
use
this
unit
near
water—for
ex¬
ample,
near
a
bathtub,
washbowl,
swimming
pool,
or
the
like.
Damp
basements
should
also
be
avoided.
2.
Heat—
The
unit
should
be
situated
away
from
heat
sources
such
as
radiators
and
the
like.
It
also
should
not
be
placed
in
tempera¬
tures
less
than
5°C
{41
°F)
or
greater
than
35°C
(95°F).
Placement
1.
Ventilation—
The
unit
should
be
situated
so
that
its
location
or
position
does
not
interfere
with
its
proper
ventilation.
Allow
10
cm
(4“)
clearance
from
the
rear
of
the
unit.
2.
Foreign
Material
—Care
should
be
taken
so
that
objects
do
not
fall
into
and
liquids
are
not
spilled
into
the
unit.
Do
not
subject
this
unit
to
excessive
smoke,
dust,
mechanical
vibration,
or
shock.
3.
Magnetism
—The
unit
should
be
situated
away
from
equipment
or
devices
that
generate
strong
magnetic
fields.
4.
Stacking
—Do
not
place
heavy
objects,
other
than
system
com¬
ponents,
on
top
of
the
unit.
5.
Surface—
Place
the
unit
on
a
flat,
level
surface.
6.
Carts
and
Stands—
The
unit
should
be
used
only
with
a
cart
or
stand
that
is
recommended
by
the
manufacturer.
The
unit
and
cart
combination
should
be
moved
with
care.
Quick
stops,
excessive
force,
and
uneven
sur¬
faces
may
cause
the
unit
and
cart
combination
to
overturn.
7.
Wall
or
Ceiling
Mounting—
The
unit
should
not
be
mounted
to
a
wall
or
ceiling,
unless
specified
in
this
operating
instructions.
Maintenance
Clean
the
cabinet,
panel
and
controls
with
a
soft
cloth
lightly
moist¬
ened
with
mild
detergent
solution.
Do
not
use
any
type
of
abrasive
pad,
scouring
powder
or
solvent
such
as
alcohol
or
benzine.
Service
1.
Damage
Requiring
Service
—The
unit
should
be
serviced
by
qualified
service
personnel
when:
(a)
The
AC
power
supply
cord
or
the
plug
has
been
damaged:
or
(b)
Objects
have
fallen
or
liquid
has
been
spilled
into
the
unit;
or
(c)
The
unit
has
been
exposed
to
rain;
or
{d)The
unit
does
not
appear
to
operate
normally
or
exhibits
a
marked
change
in
performance;
or
(e)The
unit
has
been
dropped,
or
the
enclosure
damaged.
2.
Servicing
—The
user
should
not
attempt
to
service
the
unit
beyond
that
descnbed
in
the
operating
instructions.
All
other
servicing
should
be
referred
to
an
authorized
service
personnel.
(Only
for
U.S.A.)
Call
1-800-545-2672
for
the
address
of
an
authorized
factory
servicenter.
Listening
caution
Selecting
fine
audio
equipment
such
as
the
unit
you’ve
just
pur¬
chased
is
only
the
start
of
your
musical
enjoyment.
Now
it’s
time
to
consider
how
you
can
maximize
the
fun
and
excitement
your
equipment
offers.
This
manufacturer
and
the
Electronic
In¬
dustries
Association’s
Consumer
Electronics
Group
want
you
to
get
the
most
out
of
your
equipment
by
playing
it
at
a
safe
level.
One
that
lets
the
sound
come
through
loud
and
clear
without
an¬
noying
blaring
or
distortion—and,
most
importantly,
without
affec¬
ting
your
sensitive
hearing.
We
recommend
you
to
avoid
prolonged
exposure
to
excessive
noise.
Sound
can
be
deceiving.
Over
time
your
hearing
“comfort
level"
adapts
to
higher
volumes
of
sound.
So
what
sounds
“normal"
can
actually
be
loud
and
harmful
to
your
hearing.
Guard
against
this
by
setting
your
equipment
at
a
safe
level
BEFORE
your
hearing
adapts.
To
establish
a
safe
level:
•
Start
your
volume
control
at
a
low
setting.
•
Slowly
increase
the
sound
until
you
can
hear
it
comfortably
and
clearly,
and
without
distortion.
Once
you
have
established
a
comfortable
sound
level:
•
Set
the
dial
and
leave
it
there.
Taking
a
minute
to
do
this
now
will
help
to
prevent
hearing
damage
or
loss
in
the
future.
After
all.
we
want
you
listening
for
a
lifetime.
Positioning
the
Speakers
The
diagram
below
shows
the
basic
positioning
of
each
speaker.
Loud
volumes
from
the
speakers
may
cause
them
move
on
some
•
The
subwoofer
can
be
placed
in
any
position
as
long
floors,
In
such
cases,
attach
the
accessory
speaker
feet
as
as
it
is
at
a
reasonable
distance
from
the
TV.
shown
in
the
illustration
below.
*
Do
not
place
any
object
on
top
of
this
unit.
(To
prevent
damage
to
the
speakers,
lay
them
on
top
of
a
soft
*
Be
sure
to
lay
the
subwoofer
to
its
longer
side
as
cloth
before
attaching
the
speaker
feet.)
shown
in
the
picture.
Remove
the
backing
paper.
Operation
Set
the
low
pass
filter,
volume
and
phase
to
suit
characteristics
of
the
front
speaker
and
SB-AS40
combination.
1
Set
POWER
to
the
“ON”
position.
(The
POWER
indicator
will
light
up
green.)
2
Set
LOW
PASS
FILTER
to
a
suitable
frequen¬
cy,
referring
to
the
frequency
response
by
LOW
PASS
FILTER
setting
on
the
right.
3
Set
VOLUME
to
a
suitable
level,
referring
to
the
frequency
response
by
VOLUME
setting
on
the
right.
4
Listen
to
some
music
and
set
PHASE
to
“NOM”
or
“REV”,
whichever
makes
playback
normal.
NOTE:
If
active
subwoofer
and
speaker
phase
are
the
inverse
of
one
another,
they
will
tend
to
rub
each
other
out.
Playback
will
not
be
normal
and
sounds
will
seem
muffled.
About
the
POWER
indicator
This
unit
will
automatically
go
on
standby
(indicator
turns
red),
if
no
signal
is
sent
within
(approximately)
10
minutes
from
the
moment
you
turn
ON
the
power.
Once
the
signal
is
received,
this
unit
starts
working
normally
(indica¬
tor
turns
green).
Frequency
response
by
LOW
PASS
FILTER
setting
Frequency
response
by
VOLUME
setting
Connections
CQ33
•
Before
making
the
connections,
switch
OFF
the
power
to
this
unit
and
the
receiver.
•
Use
with
a
receiver
having
8ftor
below
impedance
speaker
ter¬
minals.
•
Be
sure
to
connect
only
positive
(+)
wires
to
positive
(+)
ter¬
minals,
and
negative
(-)
wire
to
negative
(-)
terminals.
When
connecting
to
a
receiver
with
subwoofer
terminals
When
connecting
to
a
receiver
with¬
out
subwoofer
terminals
Protection
circuitry
The
protection
circuitry
may
have
operated
if
either
of
the
follow¬
ing
conditions
is
noticed:
•
No
sound
is
heard
when
the
power
is
turned
on.
•
Sound
stops
during
a
performance.
The
function
of
this
circuitry
is
to
prevent
circuitry
damage
if,
for
example,
the
positive
and
negative
speaker
connection
wires
are
“shorted",
or
if
speaker
systems
with
an
impedance
less
than
the
indicated
rated
impedance
of
this
unit
are
used.
If
this
occurs,
follow
the
procedure
outlined
below:
1.
Turn
off
the
power.
2.
Determine
the
cause
of
the
problem
and
correct
it.
3.
Turn
on
the
power
once
again.
Note:
When
the
protection
circuitry
functions,
the
unit
will
not
operate
unless
the
power
is
first
turned
off
and
then
on
again.
Notes
1.
Be
sure
to
reduce
the
volume
level
setting
at
the
receiver
when
the
signal
input
exceeds
the
rated
allowable
input
in
order
to
avoid
damage
to
circuitry
or
other
malfunctions.
2.
Avoid
locations
such
as
described
below.
•
In
direct
sunlight
•
Near
heating
appliances
or
other
sources
of
heat
•
Where
the
humidity
is
high
3.
Never
use
alcohol,
paint
thinner,
benzine
or
similar
chemicals
to
clean
the
unit
as
they
may
damage
the
finish.
4.
Do
not
touch
the
diaphragms,
to
do
so
may
cause
distortion.
(In
U.S.A.
consult
MSC
Authorized
Servicenters
for
detailed
instructions
or
call
1*800-545*2672
for
the
address
of
an
authoriz¬
ed
factory
servicenter.)
Technical
Specifications
TYPE
Subwoofer
system
with
built-in
amplifier
■
AMPLIFIER
SECTION
20
Hz
-
200
Hz
continuous
power
output
(THD
1%)
50
W
(4
ft)
Phase
switching
Input
sensitivity/impedance
NORMAL.
REVERSE
RCA-type
pin-plug
Jack
54
mV/10
kft
Push-type
terminals
1.1
V/4.7
kft
Power
consumption
60
W
Power
supply
AC
120
V,
60
Hz
■
SPEAKER
SECTION
Type
1
way
1
speaker
system
Bass-reflex
type
Speakers
Woofer:
17
cm
(6-11/16")
cone
type
Impedance
4
ft
Frequency
range
32
Hz-350
Hz
(-16
dB)
38
Hz-250
Hz
(-10
dB)
BGENERAL
Dimensions
(WxHxD)
384
x
284
x
294
mm
(15-
/a
x
^
'
3
/i6
x
^'
9
/ie
)
Weight
8.5
kg
(18.7
lb)
Note:
Specifications
are
subject
to
change
without
notice.
Weight
and
dimensions
are
approximate.
Panasonic
Consumer
Electronics
Company
(“PCEC”)
Division
of
Matsushita
Electric
Corporation
of
America
One
Panasonic
Way
Secaucus,
New
Jersey
07094
Panasonic
Sales
Company,
Division
of
Matsushita
Electric
of
Puerto
Rico,
Inc.
(“PSC”)
Ave.
65
de
Infanteria.
Km.
9.5
San
Gabriel
Industrial
Park,
Carolina,
Puerto
Rico
00985
Panasonic
Canada
Inc.
5770
Ambler
Drive,
Mississauga,
Ontario
L4W
2T3
Printed
in
USA
RQTJ0025-1
B1195C0
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