BBE 383 User manual
Sound
Inc.
MODEL
383
BASS
PREAMP
USER
MANUAL
Important
Safeguards
WARNING
A
To
prevent
fire
or
shock
hazard,
do
not
expose
the
unit
to
rain
or
moisture.
ATTENTION:
RISQUE
DE
CHOC
ELECTRIC-
NE
PAS
OUVRIR.
The
lightning
flash
with
arrowhead
symbol,
within
an
equilateral
triangle,
is
intended
to
alert
the
user
to
the
presence
of
uninsulated
"dangerous
voltage"
within
the
product’s
enclosure
that
may
be
of
sufficient
magnitude
to
constitute
a
risk
of
electric
shock
to
persons.
The
exclamation
point,
within
a
equilateral
triangle
is
intended
to
alert
the
user
to
the
presence
of
important
operating
and
maintenance
(servicing)
instructions
in
the
literature
accompanying
the
appliance.
For
your
protection,
please
read
these
safety
instructions
completely
before
operating
the
appliance,
and
keep
this
manual
for
future
reference.
Carefully
observe
all
warnings,
precautions
and
instructions
on
the
appliance
and
described
in
the
operating
instructions
supplied
with
the
appliance.
INSTALLATION
■
"
Water
and
Moisture
-
Do
not
install
the
appliance
near
water:
for
example,
near
a
bathtub,
washbowl,
kitchen
sink,
laundry
tub.
In
a
wet
basement,
or
near
a
swimming
pool.
Heat
-
Do
not
install
the
appliance
near
sources
of
heat
such
as
radiators,
heat
regis¬
ters,
stoves,
or
other
appliances
that
pro¬
duce
heat.
USE
-
Power
Source
-
Connect
the
appliance
to
a
power
supply
only
of
the
type
described
in
the
operating
instructions
or
as
marked
on
the
appliance.
Power-Cord
Protection
-
Route
the
power
cord
so
that
it
is
not
likely
to
be
walked
on
or
pinched
by
having
objects
placed
on
it,
paying
particular
attention
to
the
plugs,
receptacles,
and
the
point
where
the
cord
exits
from
the
appliance.
SERVICE
-
Unplug
the
appliance
from
the
wall
outlet
and
consult
qualified
service
personnel
when:
*
the
power
cord
or
the
plug
has
been
damaged.
*
a
solid
object
or
liquid
has
fallen
into
the
cabinet.
Ventilation
-
situate
the
product
so
its
location
or
position
does
not
interfere
with
its
proper
ventilation.
For
example,
you
should
not
place
the
product
on
a
bed.
sofa,
rug.
or
similar
surface
that
might
block
the
vent
openings,
or
placed
in
a
built-in
installation,
such
as
a
bookcase
or
cabinet
that
might
impede
the
flow
of
air
through
the
ventilation
openings.
Grounding
or
Polarization
-
Do
not
defeat
the
grounding
or
polarization
feature
of
the
AC
power
cord.
If
your
AC
receptacle
will
not
accept
the
power
cord
plug,
contact
your
electrician
to
install
a
proper
AC
receptacle.
When
not
in
use
-
unplug
the
power
cord
of
the
appliance
from
the
outlet
when
left
unused
for
a
long
period
of
time.
To
disconnect
the
cord,
pull
it
out
by
grasping
the
plug.
Never
pull
the
plug
out
by
the
cord.
♦
the
appliance
has
been
exposed
to
rain
or
moisture.
♦
the
appliance
does
not
appear
to
operate
normally
or
exhibits
a
marked
change
in
performance.
♦
the
appliance
has
been
dropped,
or
the
enclosure
damaged.
Wall
or
Celling
Mounting
-
If
your
appliance
can
be
mounted
to
a
wall
or
ceil¬
ing.
mount
it
only
as
recommended.
AC
Receptacle
-
Check
to
make
sure
that
the
AC
receptacle
holds
the
power
cord
plug
firmly
and
securely.
If
the
power
cord
plug
is
loose,
contact
your
electrician
to
replace
the
defective
and
unsafe
AC
Foreign
Objects
-
Be
careful
that
foreign
objects
and
liquids
do
not
enter
the
enclosure
through
openings.
Do
not
attempt
to
service
the
appliance
beyond
that
described
in
the
operating
instructions.
For
all
other
servicing,
refer
to
qualified
service
personnel
only.
TABLE
OF
CONTENTS
Precautions.I
Product
Description.1
Tabie
of
Contents.1
Controis/Connections.2-6
Specifications.6
Generai
Operation/Appiications.7-9
Service/Maintenance.10
Warranty
information.10
Schematic
Diagrams.11-17
Congratulations
on
your
purchase
of
the
BBE
383
Bass
Guitar
Pre-amp!
The
BBE
383
is
an
extremely
versatile
pre-amp
which
is
capable
of
achieving
a
wide
array
of
tones
while
conveniently
configuring
itself
into
any
application.
Able
to
accommodate
the
most
demanding
bass
guitar
output
levels,
the
BBE
383,
with
its
three
stages
of
tone
processing
circuitry,
will
add
tremendous
thunder
and
clarity
to
the
signal
while
retaining
the
integrity
of
the
bass'
original
tone.
No
extra
devices
are
needed
to
get
flawless
performance
out
of
the
BBE
383.
The
BBE
383's
multifunctional
output
section
will
cater
itself
to
single
and
bl-amped
configurations
for
both
live
and
studio
performances.
The
following
features
of
the
BBE
383
shall
entice
even
the
most
demanding
of
players:
1.
Gain
control
to
accommodate
any
bass
guitar's
output
level.
2.
A
Punch
circuit
which
adds
an
extremely
valuable
presence
boost
to
both
the
high
and
low
frequency
ranges.
3.
A
Six
Band
Graphic
EQ
section,
4.
A
built-in
Compressor
circuit
with
variable
Threshold
to
eliminate
any
unwanted
signal
peaks
and
for
increased
sustain.
5.
BBE
Sonic
Maximizer
to
add
clarity
and
power
to
the
signal
without
adding
any
noise
or
harmonic
distortion.
6.
Dual
output
Crossover
circuit
with
variable
Frequency
and
Balance
controls
for
bi-amped
configurations,
7.
Master
Volume
control
which
simultaneously
adjusts
both
the
Balanced
and
Unbalanced
outputs.
8.
An
Effects
Loop
to
interface
the
BBE
383
Bass
Guitar
Pre-amp
with
any
effects
processor.
9.
A
Ground
Lift
Switch
to
disable
the
ground
pin
of
the
XLR
connector.
This
will
be
an
important
feature
to
have
in
the
event
of
a
hum
caused
by
multiple
ground
loops.
IMPORTANT
Before
you
begin,
please
check
the
contents
within
this
box
to
insure
that
included
are:
1.
The
BBE
383
Bass
Guitar
Pre-amp.
2,
The
BBE
383
User's
manual.
If
either
of
these
items
are
found
to
be
missing,
immediately
contact
the
BBE
dealer
from
whom
the
unit
was
purchased
immediately.
1
CONTROLS
AND
CONNECTIONS
FRONT
PANEL
1.
INPUT:
This
jack
allows
for
the
connection
of
a
bass
guitar
to
the
BBE
383.
2.
GAIN:
This
control
allows
for
the
calibration
of
the
bass
guitar's
output
level
to
the
input
of
the
BBE
383.
The
maximum
gain
of
this
section
is
40clBu.
3.
PUNCH:
This
button
adds
a
preset
frequency
boost
to
both
the
low
and
high
frequencies
for
added
power
and
projection.
EQUALIZATION
4.
60:
This
control
adjusts
the
amount
of
the
low
frequency
content
peaked
at
60Hz.
Turning
the
knob
to
its
maximum
position
(clockwise)
provides
a
boost
of
15dBu.
Turning
the
knob
to
its
minimum
position
(counter¬
clockwise)
provides
a
reduction
of
15dBu.
Turning
the
knob
to
its
middle
position
(12
O'clock)
would
be
flat
or
no
change.
5.
125:
This
control
adjusts
the
amount
of
the
low
frequency
content
peaked
at
125Hz.
Turning
the
knob
to
its
maximum
position
(clockwise)
provides
a
boost
of
15dBu.
Turning
the
knob
to
its
minimum
position
(counter-clockwise)
provides
a
reduction
of
15dBu.
Turning
the
knob
to
its
middle
position
(12
O'clock)
would
be
flat
or
no
change.
6.
250:
This
control
adjusts
the
amount
of
the
mid
range
frequency
content
peaked
at
250Hz.
Turning
the
knob
to
its
maximum
position
(ciockwise)
provides
a
boost
of
15dBu.
Turning
the
knob
to
its
minimum
position
(counter-clockwise)
provides
a
reduction
of
15dBu.
Turning
the
knob
to
its
middle
position
(12
O'clock)
would
be
flat
or
no
change.
7.
600:
This
control
adjusts
the
amount
of
the
mid
range
frequency
content
peaked
at
600Hz.
Turning
the
knob
to
its
maximum
position
(clockwise)
provides
a
boost
of
15dBu.
Turning
the
knob
to
its
minimum
position
(counter-clockwise)
provides
a
reduction
of
15dBu.
Turning
the
knob
to
its
middle
position
(12
O'clock)
would
be
flat
or
no
change.
2
(
1
6
)
(
1
8
)
8.
1800;
This
control
adjusts
the
amount
of
the
high
frequency
content
peaked
at
1800Hz.
Turning
the
knob
to
its
maximum
position
(clockwise)
provides
a
boost
of
15dBu.
Turning
the
knob
to
its
minimum
position
(counter-
ciockwise)
provides
a
reduction
of
15dBu.
Turning
the
knob
to
its
middle
position
(12
O'clock)
would
be
flat
or
no
change.
9.
3300:
This
control
adjusts
the
amount
of
the
high
frequency
content
peaked
at
3300Hz.
Turning
the
knob
to
its
maximum
position
(clockwise)
provides
a
boost
of
15dBu.
Turning
the
knob
to
its
minimum
position
(counter¬
clockwise)
provides
a
reduction
of
15dBu.
Turning
the
knob
to
its
middle
position
(12
O'clock)
would
be
flat
or
no
change.
COMPRESSOR
10.
IN:
This
switch
engages
the
compression
circuit
on
the
BBE
383
Bass
Guitar
Pre-amp.
When
depressed,
the
"IN"
position,
the
compressor
circuit
will
be
engaged.
However,
the
"RED"
LED
will
illuminate
only
when
compression
actually
occurs.
This
will
assist
in
selecting
a
proper
threshold
level
and
eliminate
guessing
when
the
compression
is
actually
occurring.
When
in
the
"OUT"
position,
the
"RED"
LED
will
not
illuminate
and
the
compression
circuit
has
been
disengaged.
11.
THRESHOLD:
This
control
adjusts
the
level
at
which
the
compression
takes
effect.
This
feature
is
used
most
for
increasing
sustain
and
reducing
signal
peals
in
both
live
and
studio
performances.
Turning
the
Threshold
knob
clockwise
will
adjust
the
amount
of
compression.
The
further
the
Threshold
knob
is
turned
clockwise,
the
greater
the
signal
peak
reduction
and
sustain.
Note;
An
overall
reduction
of
signal
level
will
occur
when
the
Threshold
is
ajusted
to
extreme
settings.
BBE
PROCESS
12.
I
N
:
This
switch
engages
the
BBE
Process.
When
depressed,
the
"IN"
position,
the
“GREEN"
LED
will
illuminate.
When
in
the
"OUT"
position,
the
"GREEN"
LED
will
not
illuminate,
indicating
that
the
BBE
Process
has
been
disengaged.
3
13,
LO
CONTOUR:
This
control
is
a
low
frequency
adjustment
for
the
BBE
Process.
It
provides
a
boost
of
lOdBu
when
turned
to
Its
maximum
position
(clockwise)
at
50Hz,
When
turned
to
its
minimum
position
(counter-clockwise)
it
reduces
the
50Hz
signal
by
lOdBu,
The
middle
position
would
be
flat
or_no_
change.
This
control
differs
from
that
of
the
60Hz
adjustment
in
the
Equalization
section
due
to
the
inherent
phase
shift
of
the
BBE
Process.
14.
PROCESS:
This
control
introduces
the
BBE
Process
which
has
specially
modified
for
the
BBE
383
Bass
Guitar
Pre-amp.
The
BBE
Process
gives
the
user
a
more
detailed
perception
of
tonality,
added
"bite"
and
an
increase
in
clarity.
The
low
end
of
the
bass
guitar
will
be
tightened
without
losing
its
thur^derous
effect...
all
without
adding
or
creating
any
additional
noise
or
harmonic
distortion.
When
the
knob
is
in
its
minimum
position,
completely
counter¬
clockwise,
no
process
is
taking
effect
and
the
circuit
is
in
its
noise
suppression
mode.
Turning
the
knob
clockwise
will
Introduce
the
BBE
Process,
Adjust
the
knob
to
mix
the
desired
amount
of
process
to
suit
your
taste.
The
BBE
Process
also
has
its
own
in/out
switch
for
comparison
of
the
processed
to
unprocessed
signal
located
on
the
front
panel.
Experiment
with
the
process.
Use
the
BBE
as
an
extension
of
the
tone
controls.
Please
note
that
the
BBE
process
Is
not
an
effect,
but
an
Improvement.
Generally
a
good
place
to
start
the
BBE
process
is
to
set
the
knob
to
it's
12
o'clock
position,
then
adjust
accordingly.
Note:
The
BBE
process
is
applied
after
the
effects
return.
CROSSOVER
The
BBE
383
Bass
Guitar
Pre-amp
can
accommodate
a
bi-amped
bass
system
by
utilizing
the
two
outputs
in
the
crossover
section,
15.
FREQ:
This
control
is
to
select
the
split
or
"Q"
point
of
the
filter
for
the
Crossover
output
on
the
rear
panel.
The
"Q"
point
of
the
filter
has
an
adjustable
range
of
200-2kHz
to
achieve
the
user's
"ideal
situation"
for
a
given
amplifier
or
speaker
configuratian.
For
example:
If
the
Freq
kncpb
is
set
at
800Hz,
the
High
frequency
output
on
the
rear
panel
will
contain
frequencies
above
800Hz,
the
Low
frequency
output
will
contain
frequencies
below
800Hz.
The
slope
of
the
filter
is
12dB
per
octave.
16,
BALANCE:
This
control
adjusts
the
Crossover
output
levels.
Turning
the
knob
clockwise
will
increase
the
output
level
of
the
High
output
while
simultaneously
reducing
the
Low
output
level.
Turning
the
knob
counter¬
clockwise
will
have
the
opposite
result.
17,
VOLUME:
This
control
simultaneously
adjusts
the
signal
level
of
both
the
Balanced
and
Unbalanced
autputs,
along
with
that
of
the
Crossover
output
levels
of
the
BBE
383
Bass
Guitar
pre-amp.
The
output
is
capable
of
a
+4dBu
average
level
which
is
ideal
for
driving
a
power
amplifier
or
a
long
snake
line
back
to
a
mixing
console,
18.
POWER:
This
switch
applies
AC
power
to
the
BBE
383
Bass
Guitar
Pre-amp.
The
"RED"
power
LED
will
illuminate
when
the
power
switch
is
in
the
"ON"
position.
When
the
switch
is
not
in
the
"ON"
position,
the
"RED"
power
LED
will
not
illuminate.
4
REAR
PANEL
1.
POWER
CORD:
Tt
is
is
a
standard
three-pronged
AC
power
cable
for
connection
to
any
standard
grounded
llOVac
outlet.
2.
FUSE:
Replace
ONLY
with
same
type
Fastblow
fuse.
U.S.,
Canada
and
Japan
models:
250Vac,
1/2A
Fastblow
Standard
model:
250Vac,
.125A
Fastblow
MAIN
OUTPUTS
3.
UNBALANCED:
This
output,
a
1/4"
monaural
phone
jack,
is
to
connect
the
BBE
383
Bass
Guitar
Pre-amp
to
the
next
subsequent
component
in
the
system.
Used
in
conjunction
with
the
Master
Volume,
this
output
can
accommodate
any
required
output
level.
4.
BALANCED:
This
output,
a
balanced
XLR
jack,
is
to
connect
the
BBE
383
Bass
Guitar
Pre-amp
to
a
mixing
console
or
tape
deck.
Used
in
conjunction
with
the
Master
Volume,
this
output
can
accommodate
any
required
output
level.
XLR
GROUND
LIFT
5.
L
I
F
TED:
Use
this
switch
to
disable
the
ground
pin
of
the
XLR
connector.
This
is
a
useful
feature
in
eliminating
a
ground
loop
between
the
BBE
383
Bass
Guitar
Pre-amp
and
any
subsequent
component
in
the
signal
chain.
CROSSOVER
The
BBE
383
Bass
Guitar
Pre-amp
can
accommodate
a
bi-amped
bass
system
by
utilizing
the
two
outputs
in
the
crossover
section.
6.
HIGH:
This
jack
is
the
output
for
the
high
frequency
content
as
determined
by
the
Crossover
controls
on
the
front
panel.
7.
LOW:
This
jack
is
the
output
for
the
low
frequency
content
as
determined
by
the
Crossover
controls
on
the
front
panel.
5
EFFECTS
8.
RETURN:
Use
this
jack
to
connect
the
BBE
383
Bass
Guitar
Pre-amp
to
an
effects
processor's
output.
Note:
The
effect
processor’s
level
control
may
need
to
be
adjusted
to
properly
match
the
level
of
the
BBE
383
Bass
Guitar
Pre-amp.
(Nominal
level
is
-lOdBu.)
9.
SEND:
Use
this
jack
to
connect
the
BBE
383
Bass
Guitar
Pre-amp
to
an
effects
processor's
input.
This
ieve!
is
approximately
-lOdBu
depending
upon
the
status
of
the
Gain
and
Equalization
settings.
SPECIFICATIONS
Power
Requirements:
U.S.,
Canada
8t
Japan
models:
120VAC,
50/60Hz,
8
WATTS
Standard
model:
220VAC,
50/60Hz,
8
WATTS
Fuse:
Replace
with
the
same
type
FASTBLOW
fuse.
U.S.,
Canada
&
Japan
models:
250Vac,
1/2A
Fastblow
type
fuse
Standard
model:
250Vac,
.125A
Fastblow
type
fuse
Dimensions:
19“(W)
x
5.5"(D)
x
1.7''(H)
Shipping
Weight:
7lbs.
6
GENERAL
OPERATION
In
order
to
reduce
the
risk
of
damage
to
any
equipment,
properly
connect
all
audio
and
power
cables
before
turning
on
any
components
in
the
system.
Most
important
of
ail,
ALWAYS
TURN
ON
THE
POWER
AMPLIFIER
LAST
TO
AVOID
DAMAGING
THE
SPEAKERS
OR
THE
AMP,
Different
bass
guitars
will
vary
in
output
level.
For
this
reason,
the
BBE
383
Bass
Guitar
Pre-amp
has
an
input
Gain
control.
Adjust
this
knob
to
achieve
a
strong
signal
input
to
the
BBE
383.
As
a
starting
suggestion,
bass
guitars
with
passive
style
pick-ups
will
usually
require
a
higher
setting
than
bass
guitars
with
active
style
pick-ups.
The
Equalization
circuit
of
the
BBE
383
has
many
facets
to
appease
most
any
player.
In
conjunction
with
the
Punch
button,
adjust
the
EQ
controls
of
60Hz,
125Hz,
250Hz,
600Hz,
1.8kHz,
3.3kHz,
to
achieve
your
"individual"
sound.
Compression
is
a
feature
that
will
be
welcomed
by
any
bass
player.
Adjust
the
Threshold
knob
to
eliminate
any
volume
peaks
that
may
accompany
"slapping"
the
bass
or
for
smoothing
a
bass
guitar
for
recording.
An
increase
in
sustain
is
also
a
desired
result
of
large
amounts
of
compression
as
determined
by
the
Threshold
control.
The
BBE
Process
is
a
unique
feature
that
only
the
BBE
series
of
pre-amps
possess.
The
BBE
Process
wili
produce
a
ciear,
crisp,
full-bodied
sound
without
adding
any
noise
or
harmonic
distortion
to
the
signal.
The
BBE
Process
should
be
used
as
an
extension
of
the
Equalization
controis
to
improve
the
overail
quality
of
the
bass
guitar's
tone.
in
live
sound,
crossovers
are
used,
in
conjunction
with
the
speaker
cabinets,
to
give
the
audience
a
clear
and
precise
duplication
of
the
music
program.
This
is
achieved
by
aliowing
only
a
narrow
band
of
frequencies
to
go
to
an
individuai
speaker
cabinet
instead
of
aii
frequencies
going
to
any
one
speaker.
For
example,
all
frequencies
above
5kHz
may
go
to
the
tweeter/horn,
250Hz
to
5kHz
may
go
to
a
midrange
speaker
and
everything
below
250Hz
may
go
to
a
sub-woofer.
The
end
result:
Each
speaker
is
able
to
work
more
efficiently
and
produce
a
superior
quality
of
music.
The
BBE
383
has
a
crossover
circuit
built
in.
The
Crossover
is
equipped
with
an
adjustable
Frequency
point
and
a
Balance
control
to
adjust
the
mix
of
the
High
and
Low
frequency
outputs.
Now
a
player
is
able
to
use
multiple
speaker
cabinets
tailored
to
their
requirements:
A
cabinet
for
the
midrange
frequencies
and
one
for
the
thundering
lows.
Additionally,
these
outputs
may
also
be
used
to
create
many
different
bass
sounds
by
mixing
the
Crossover’s
signal
with
the
signal
from
the
main
output.
The
Volume
control
will
simultaneously
adjust
the
BBE
383’s
output
volume
from
all
outputs:
The
Balanced,
Unbalanced,
and
Crossover
outputs.
Use
either
the
Unbalanced
or
the
Balanced
output
to
connect
to
a
power
amp
or
a
mixing
console
and
the
Crossover
outputs,
as
described
above,
to
best
suit
the
requirements
of
any
performance.
The
Unbalanced
and
Crossover
outputs
are
1/4"
monaural
phone
plug
while
the
Balanced
output
is
an
male
XLR
connector
with
a
Ground
Lift
switch
to
eliminate
any
multiple
ground
connections.
Use
the
following
illustrations
as
a
guide
for
placing
the
BBE
383
into
the
signal
chain.
7
USING
THE
BBE
383
BASS
GUITAR
PRE-AMP
IN
A
STANDARD
APPLICATION
REVERB,
DELAY,
ETC...
CHANNEL
INPUT
ONE
15“
BASS
CABINET
I
^
I
LWJ
ooooooo®
till
oooooooo
ITTI
OOOOOOOO
(500
tttIHIt
H
oo
■■■
16
TRACK
RECORDING
MIXING
CONSOLE
♦
_I_
@
@
PA
CABINET
PA
CABINET
For
most
configurations,
using
the
Unbalanced
output
of
the
BBE
383
Bass
Guitar
Pre-amp
to
connect
to
a
speaker
cabinet
for
monitoring
the
bass
guitar
and
using
the
Balanced
output
to
connect
to
a
mixing
consoie
for
live
and
studio
applications
will
prove
to
be
an
ideal
starting
point.
8
USING
THE
BBE
383
BASS
GUITAR
PRE-AMP
IN
A
BI-AMPED
CONFIGURATION
CHANNEL
INPUT
000
(
5000
®
oooooooo
oooooooo
Hit
o
o
o
ttttim
tt
MIXING
CONSOLE
4
X
10"
BASS
CABINET
Use
the
Crossover
outputs
for
configuring
a
more
sophisticated
system.
An
advantage
to
Bi-amping
is
that
each
speaker
cabinet
is
working
on
a
smaller
frequency
band
than
a
full
range
output.
The
speakers
then
work
more
efficiently
and
produce
better
results.
The
main
outputs
and
the
Crossover
outputs
are
interchangeable
and
are
worth
experimenting
with
to
find
the
ultimate
configuration!
9
SERVICE
We
recommend
that
if
at
all
possible
a
BBE
383
Bass
Guitar
Pre-amp
which
requires
service
be
sent
to
our
facility
in
Huntington
Beach,
CA.
We
request
that
a
"RETURN
AUTHORIZATION"
be
issued
by
the
dealer
from
whom
you
purchased
the
unit.
If
this
is
not
possible,
call
BBE
Sound,
Inc.
directly
at
(714)
897-6766,
to
obtain
a
"RETURN
AUTHORIZATION."
Include
a
copy
of
the
bill
of
sale
with
the
unit
when
it
is
shipped
to
BBE
Sound
Inc.,
so
that
the
service
process
can
be
expedited.
As
the
repair
turnaround
time
is
minimal,
we
request
that
the
unit
be
sent
BBE
Sound,
Inc.
This
helps
us
add
reliability
data
to
our
files
for
use
in
designing
future
products.
MAINTENANCE
Maintenance
of
the
BBE
383
Bass
Guitar
Pre-amp
is
limited
to
proper
cleaning
of
the
unit
with
a
mild
household
cleaner
such
as
Formula
409^^
or
Windex^'".
The
chassis
and
cover
are
steel
finished
with
a
durable
polyurethane
paint,
while
the
front
panel
is
an
anodized
aluminum
extrusion.
There
are
no
user
replaceable
parts
and
the
unit
should
not
be
opened
for
any
reason
unless
you
are
a
qualified
technician.
Calibration
should
be
performed
if
parts
are
replaced
or
if
a
performance
check-out
indicates
a
problem
with
calibration.
Long
term
use
has
shown
that
over
the
life
of
the
unit
there
is
little
or
no
drift
of
the
components
in
the
BBE
383
which
would
cause
a
change
in
calibration.
A
conservative
design
philosophy
has
resulted
in
a
piece
of
equipment
which
should
give
years
of
trouble-free
service.
WARRANTY
Warranty
registration
of
the
unit
to
BBE
Sound
Inc.
is
not
necessary.
However,
it
is
strongly
recommended
that
a
copy
of
the
bill
of
sale
is
retained
for
future
reference.
IT
IS
THE
SOLE
RESPONSIBILITY
OF
THE
END
USER
TO
PROVIDE
THE
BILL
OF
SALE
OR
OTHER
MEANS
OF
PROOF
OF
PURCHASE
TO
VALIDATE
THE
WARRANTY
IF
WARRANTY
SERVICE
IS
REQUIRED.
The
BBE
383
Bass
Guitar
Pre-amp
is
warranted
against
defects
in
material
and
workmanship
for
a
period
of
one
(1)
year
from
date
of
purchase
from
BBE
Sound,
Inc.
or
from
an
authorized
dealer.
During
this
period,
we
will
repair
units
free
of
charge
providing
that
they
are
shipped
prepaid
to
BBE
Sound,
Inc.,
5381
Production
Drive,
Huntington
Beach,
CA
92649.
We
will
pay
return
UPS
shipping
charges
within
the
USA.
All
charges
related
to
non-US
shipping,
including
customs
clearance,
will
be
billed.
The
warranty
will
be
honored
for
the
longer
of
either
90
days
from
the
date
of
any
service
or
the
remainder
of
the
original
1
Year
factory
warranty.
This
warranty
will
be
considered
null
and
void
by
BBE
Sound,
Inc.
if
any
of
the
following
is
found:
1.
The
equipment
has
been
physically
damaged.
2.
The
equipment
shows
signs
of
abuse.
3.
The
equipment
has
been
electrically
damaged
by
improper
connection
or
attempted
repair
by
the
customer
or
a
third
party.
4.
The
equipment
has
been
modified
without
authorization.
5.
The
bill
of
sale
indicates
that
the
purchase
date
of
the
equipment
is
not
within
the
warranty
period.
All
non-warranty
repairs
are
warranted
for
a
period
of
90
days
from
the
date
of
service.
BBE
Sound,
Inc.
is
NOT
LIABLE
FOR
CONSEQUENTIAL
DAMAGES.
Should
the
pre-amp
fail
to
operate
for
any
reason,
our
sole
obligation
is
to
repair
the
unit
as
described
above.
10
BASS
PREAHP
MODEL
363
0.047uf
0*0022uf
CIO
C3
12
303
BASS
PREAMP
EG
CIRCUIT
U^w-
BEE
MODEL
383
BASS
PREAMP
COMPRESSOR
CIRCUIT
LO
CONTOUR'
JO
15
UNLESS
OTHERWISE
SPECIFIED
FROH
BBE
CIRCUIT
OUTPUT
POWER
INDICATOR
'
gOHi"
a
u*
O'
.^1
17
MODEL
303
POWER
SUPPLY
POR
NETLIST
Sound
Inc.
5381
Production
Drive
Huntington
Beach,
CA
92649
(714)897-6766
Covered
by
U.S.
Patent
4,482,866
and
other
U.S.
and
foreign
patents
pending.
BBE
is
the
registered
trademark
of
BBE
Sound,
Inc.
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