BBE 802 User manual
Sound
Inc,
MODEL
802
USER
MANUAL
5500
Bolsa
Ave,.
Suite
245
Huntington
Beach.
CA
92649,
(714)
897-6766
in
USA
(800)
233-8346.
in
CA
(800)
558-3963
Important
Safeguards
CAUTION
RISK
OF
ELECTRIC
SHOCK
DO
NOT
OPEN
CAUTION:
TO
REDUCE
THE
RISK
OF
ELECTRIC
SHOCK,
DO
NOT
REMOVE
COVER
(OR
BACK).
NO
USER-SERVICEABLE
PARTS
INSIDE.
REFER
SERVICING
TO
QUALIFIED
SERVICE
PERSONNEL.
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.
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.
Wall
or
Ceiling
Mounting
-
If
your
appliance
can
be
mounted
to
a
wali
or
ceil¬
ing,
mount
it
only
as
recommended.
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
-
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.
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,
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.
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.
Do
not
attempt
to
service
the
appliance
beyond
that
described
in
the
operating
instructions.
For
all
other
servicing,
refer
to
qualified
service
personnel
only.
Congratulations!
Thank
you
for
buying
the
BBE
Model
802
Audio
Processor
You
now
own
a
very
unique
signal
processing
device
with
no
other
equal
in
the
audio
world
today.
Whether
you
purchased
the
BBE
802
for
recording
studio,
live
concert,
playback
or
industrial
use,
you
will
find
the
unit's
rugged
construction
and
careful
electronic
design
a
welcome
addition
to
your
audio
system.
This
manual
will
help
you
use
the
BBE
802
more
effectively
and
in
ways
of
which
you
may
not
be
aware.
Review
of
the
information
contained
in
this
owner’s
manual
will
answer
most
of
the
common
questions
that
our
service
department
receives.
But
if
you
still
have
questions,
please
feel
free
to
call
tolhfree
(in
USA)
1-800-233-8346
or
(in
CA)
1-800-558-3963.
The
BBE^”
Process
—
»What
Is
It?”
Loudspeakers
have
difficulty
dealing
with
the
electronic
signals
supplied
by
an
amplifier
These
difficulties
cause
such
major
phase
and
amplitude
distortion
that
the
sound
reproduced
by
a
speaker
differs
significantly
from
the
sound
produced
by
the
original
source.
In
the
past,
these
problems
have
proved
unsoivable
and
were
thus
relegated
to
a
position
of
secondary
importance
in
audio
system
design.
However,
phase
and
amplitude
integrity
is
essential
to
accurate
sound
reproduction.
Research
shows
that
the
information
which
the
listener
translates
into
the
recognizable
characteristics
of
a
live
performance
are
intimately
tied
into
the
complex
time
and
amplitude
relationships
between
the
fundamental
and
harmonic
components
of
a
given
musical
note
or
sound.
These
relationships
define
a
sound’s
“sound”.
When
these
complex
relationships
pass
through
a
speaker,
the
proper
order
is
lost.
The
higher
frequencies
are
delayed.
A
lower
order
frequency
may
reach
the
listener’s
ear
first
or
perhaps
simultaneously
with
that
of
a
higher
frequency,
in
some
cases,
the
fundamental
components
may
be
so
time-shifted
that
they
can
reach
the
listener’s
ear
ahead
of
some
or
all
the
harmonic
components.
This
change
in
the
phase
and
amplitude
relationship
of
the
harmonic
and
fundamental
frequencies
is
technically
called
“envelope
distortion”.
The
listener
perceives
this
loss
of
sound
integrity
in
the
reproduced
sound
as
“muddy”
and
“smeared".
In
the
extreme,
it
can
become
difficult
to
tell
the
difference
among
musical
instruments,
for
example,
an
oboe
and
a
clarinet.
BBE
Sound,
Inc.
conducted
extensive
studies
of
numerous
speaker
systems
over
a
ten
year
period.
With
this
knowledge
it
became
possible
to
develop
an
ideal
speaker
and
to
distill
the
corrections
necessary
to
return
the
fundamental
and
harmonic
frequency
structures
to
their
correct
order.
While
there
are
differences
among
various
speaker
designs
in
the
magnitude
of
their
needs
for
correction,
the
overall
pattern
of
correction
needed
is
remarkably
consistent.
The
BBE'“
process
is
so
unique
that
42
patents
have
been
awarded
by
the
U.S.
Patent
Office.
"How
it
Works”
The
BBE^"
process
imparts
a
pre-determined
phase
correction
to
the
high
frequencies
where
most
harmonic
information
exists.
This
is
done
by
breaking
the
signal
into
three
sub-bands
or
groups;
the
low
frequency
group
which
is
crossed
over
at
150Hz,
the
mid-range
group
which
is
crossed
over
at
1200Hz
and
the
high
frequency
group
that
handles
everything
else
up
to
20kHz.
The
low
group
is
delayed
about
2.5
ms
(milliseconds)
via
group
delay
within
a
passive
low
pass
filter.
The
front
pane!
control
allows
for
either
a
flat
response
or
a
boost
of
the
lows
at
50Hz.
The
mid-range
group
is
delayed
only
about
0.5
ms
and
passes
through
an
active
band-pass
filter.
The
mid
group
is
used
as
a
point
of
reference
to
make
dynamic
amplitude
corrections
in
both
positive
and
negative
directions
to
the
high
frequency
group
which
has
been
passed
through
a
high
quality
VGA
(Voltage
Controlled
Amplifier).
Two
RMS
average
toudness
detectors
continuously
monitor
both
the
mid-range
and
high
frequencies
to
compare
the
relative
harmonic
content
levels
of
the
two
bands
and
apply
the
appropriate
amount
of
control
voltage
to
the
VGA,
thereby
determining
the
amount
of
high
frequency
harmonic
content
present
at
the
final
output
of
the
BBE’"
processor.
Product
Description
The
BBE
802
is
an
intelligent
audio
processor
designed
to
solve
a
series
of
complex
problems
as
described
in
the
previous
section.
It
is,
however,
very
simple
to
set
up
and
operate
and
once
installed
will
function
flawlessly
without
further
attention.
It
is
a
dual
channel,
rack-mountable
device
for
use
in
+4dBu
balanced
line
level
applications,
such
as
those
found
in
recording
studios,
large
concert
systems
and
industrial
audio
applications.
The
BBE
802
takes
up
one
EiA
standard
rack
space
of
19
inches
width
and
1.75
inches
height
(1U).
There
are
two
completely
separate
channels
to
allow
for
either
full
stereo
program
or
two
independent
mono
channels,
such
as
separate
processing
for
a
snare
drum
tape
track
in
channel
A
and
a
synthesized
bass
track
in
channel
B.
BBE"*
applies
different
phase
correction
algorithms
to
three
separate
frequency
bands.
A
variable
front
panel
control
for
each
channel
allows
the
user
to
adjust
the
amount
of
process
desired.
Using
Your
New
BBE
802
BBE
™
is
a
process
to
be
added
before
all
other
mixing
of
reverb,
special
effects
or
equalization.
The
BBE
802
should
be
used
to
increase
the
clarity
and
intelligibility
of
the
total
finished
mix
or
an
individual
track,
t.e.:
vocal
or
instrument.
Unlike
many
aural
exciters
and
equalizers,
the
BBE
802
will
not
add
any
extra
noise
or
harmonics
to
the
sound.
Thus,
there
will
be
no
future
problems
in
duplication
or
mastering
caused
by
aberrant
high
frequency
distortion.
Since
the
BBE
™
technology
is
a
single-stage
process
there
is
no
need
for
encoding
and
decoding.
Always
“A-B”
the
processed
to
unprocessed
sound
with
the
process
in/out
switch
to
adjust
the
amount
of
processing
required.
Things
To
Remember
The
BBE
802
is
designed
to
work
in
a
line-level
environment.
The
program
average
levels
feeding
the
input
of
the
processor
should
be
around
“0”
VU
or
anywhere
from
-20dBu
to
-i-8dBu.
The
BBE
802
drives
load
impedances
down
to
600
Ohms
and
supplies
up
to
+24dBu
levels
at
which
point
it
will
clip.
The
BBE
802
accepts
both
unbalanced
and
balanced
inputs
and
supplies
floating
outputs
on
the
XLR
connections.
The
“tip”
is
hot
on
the
1/4
inch
jacks
and
the
inputs
and
outputs
are
transformer
isolated.
If
the
program
material
has
excessive
background
noise,
the
noise
may
be
modulated
with
the
program.
In
this
case,
an
equalizer
or
other
type
of
noise
reduction
system
may
be
inserted
in
front
of
the
BBE
802
to
roll
off
the
noise
first.
Post-
amplification
of
the
BBE
802
is
not
necessary
and
not
recommended,
as
the
BBE
802
will
drive
any
other
device
in
the
studio
audio
chain
to
full
level
directly.
This
assumes
that
the
BBE
802
is
operating
in
the
aforementioned
fashion
with
line-levels.
Applications
Various
applications
of
the
process
include:
Recording
Studios
The
BBE
802
is
designed
for
use
in
professional
studios
to
restore
iiveness,
clarity,
and
improve
the
transient
response
of
individual
tracks
or
entire
two
channel
mixes.
The
patented
BBE
™
process
works
especially
well
on
digital
drum
machines,
on
synthesized
brass
patches
and
on
vocals
where
extreme
equalization
would
cause
stridency
and
distortion
at
peak
levels.
The
BBE
802
works
as
a
playback
processor
when
inserted
between
the
tape
track
output
and
the
console
line
input.
Conversely,
when
recording
with
the
BBE
802,
the
output
of
the
console
feeds
directly
to
the
input
of
the
BBE
802.
The
BBE
802’s
output
then
feeds
the
tape
recorder’s
input.
The
BBE
802
saves
poorly
recorded
or
overcompressed
tape
tracks
and
brightens
low-level
instruments
without
bringing
up
a
lot
of
noise
in
the
process.
Figure
1
shows
the
BBE
802
in
a
typical
recording
studio
application
where
the
recording
buss
output
to
the
tape
track
is
interrupted
and
the
BBE
802
inserted.
Live
Concert
Systems
The
BBE
802
adds
a
much
needed
clarity
to
the
monitor
mix
without
shrillness.
The
two
independent
channels
are
ideal
for
two
monitor
mixes
when
one
mix
requires
more
processing
level
than
the
other.
Figure
2
shows
the
BBE
802
in
a
typical
concert
sound
system
where
channel
A
of
the
BBE
802
is
used
for
the
main
house
mix
feed
and
channel
B
is
used
for
the
monitor
mix
feed
when
two
different
amounts
of
processing
are
required
along
with
the
two
different
mixes.
The
BBE
802
unit
should
be
placed
before
any
house
graphic
equalizers.
All
pink
noise
checks
should
be
made
with
the
BBE
™
unit
switched
“out"
to
obtain
the
desired
house
curve.
The
BBE
™
process
can
then
be
dialed
in
to
suit
the
music
production.
Extreme
console
equalization
normally
used
during
live
performance
may
be
reduced
due
to
the
dynamic
enhancement
effect
of
the
BBE
802.
The
BBE
802
may
be
inserted
in
many
places
within
the
console’s
signal
path
to
achieve
specialized
results.
In
the
case
of
non-VCA
sub-groups,
the
BBE
802
is
inserted
between
“buss
out"
and
“sub-group
fader
in"
for
the
application
of
the
BBE
™
process
to
a
whole
group
of
drum
microphones,
for
example.
If
the
BBE
™
process
is
to
be
used
on
only
one
microphone
source,
then
the
BBE
802
is
inserted
in
the
normal
“insert
send
and
receive"
points
exactly
like
a
limiter
or
equalizer
is
patched.
If
the
RA.
mixer
does
not
have
“insert
points”
or
if
the
mixer
is
a
powered-type
unit
without
any
way
of
interrupting
the
signal
path
before
the
power
amplifier
then
the
BBE
401
should
be
used.
The
BBE
401
accepts
low-levels
from
micro¬
phones,
etc.
and
interfaces
directly
to
the
PA.
mixer.
Audio
Cartridge/Cassette
Copies
Since
the
BBE
™
technology
is
a
single-stage
process
without
the
need
for
encoding
and
decoding,
the
stereo
BBE
802
is
inserted
between
the
master
two-track
and
the
audio
cartridge
or
cassette
recorder
for
crisper
punchier
copies.
Figure
3
shows
the
BBE
802
in
real
time
cartridge
or
cassette
copy
mode.
in
the
case
of
high-speed
cassette
duplication,
the
BBE
™
process
must
be
applied
when
the
equalized
cassette
master
dub
is
made
at
the
mastering
studio.
See
Mastering.
Mastering
The
BBE
802
is
used
in
the
mastering
of
vinyl
records,
audio
cassettes
and
digital
compact
discs
to
dramatically
increase
the
clarity
of
the
program
material.
Mastering
engineers
generally
use
much
less
equalization
when
the
BBE
802
is
used.
Oncle
again,
the
BBE
802
is
inserted
between
the
master
tape
reproducer
and
the
mastering
console.
Industrial
The
BBE
802
greatly
improves
intelligibitty
in
speech
or
music
programs
by
improving
transient
playback
response.
This
makes
the
BBE
802
a
natural
for
public
address,
intercom
or
wide
area
dispersion
of
pre-recorded
music
or
voice
announcements
over
an
existing
old
and
dull
loudspeaker
system.
Figure
4
shows
the
BBE
802
inserted
between
the
telephone
matching
adapter
and
the
auxiliary
input
to
the
public
address
intercom
amplifier.
Since
the
BBE
802
is
a
line-
level
operated
device,
plugging
a
microphone
directly
into
the
unit
will
not
work.
If
the
existing
RA.
amplifier
has
no
provision
for
auxiliary
input,
then
the
BBE
401
unit
should
be
used.
The
BBE
401
unit
accepts
a
microphone
directly
and
then
interfaces
with
an
existing
RA.
amplifier
without
costly
on-site
modifications.
Broadcast
The
BBE
802
is
perfect
for
“on
the
air”
audio
enhancement
when
inserted
after
the
studio
mixing
console
before
the
final
peak
limiters.
Figure
5
shows
a
typical
BBE
802
installation
at
the
broadcast
station.
Usually
a
separate
BBE
802
would
be
integrated
into
each
engineer’s
booth
adjacent
to
the
mixing
console.
The
BBE
B02
reduces
the
high
and
mid
frequency
smear
for
clearer,
less
strident
high
end
and
more
distinct
mid
range.
The
BBE
802
is
also
used
in
the
production
of
music
and
commercial
tape
cartridges
to
make
cleaner
and
crisper
copies.
Movie
Theater
The
BBE
™
process
brings
film
and
sound
tracks
which
feature
a
wide
range
of
special
effects
to
dramatic
life.
It
also
adds
sparkle
and
intelligibility
to
dull
and
muddy
optical
film
sound.
Both
music
and
dialogue
take
on
a
fresh,
bright
character
when
processed
through
the
BBE
802.
Figure
6
shows
the
BBE
802
in
a
typical
movie
theater
application
inserted
after
the
Dolby
Surround
Processor®
directly
in
front
of
the
theater’s
speaker
power
amplifiers.
A
four
channel
theater
requires
two
BBE
802s
while
six
channel
houses
requires
three
BBE
802s.The
“set
and
forget”
adjustments
on
the
BBE
802
mean
the
theater
operator
does
not
need
to
rely
on
the
projectionist
for
proper
BBE'“
operation.
Disco/Club
Figure
7
shows
the
BBE
802
in
a
disco
club
application.
Usually,
the
same
rules
mentioned
in
live
concert
systems
apply
but
on
a
smaller
scale.
The
ideal
place
to
insert
the
BBE
802
is
between
the
“main
program
buss
out”
and
the
master
volume
control.
Not
all
disco
club
mixers
have
this
facility,
so
the
next
best
place
is
at
the
power
amplifier.
The
output
of
the
mixer
feeds
the
BBE
802’s
input
and
the
output
of
the
BBE"''
feeds
the
power
amplifier.
The
BBE
802
unit
is
set
to
accommodate
the
loudest
levels
used.
The
Controls
Operation
of
the
BBE
802
is
quite
simple
due
to
the
sophisticated
“smart"
circuitry
within
the
unit.
Below
are
the
names
and
purposes
of
each
control
on
the
BBE
802.
Process
Control
The
process
control
regulates
the
amount
of
amplitude
compensation
as
indicated
by
the
LED
stack.
Advancing
the
knob
clockwise
increases
the
amount
of
the
BBE
™
process.
Once
set,
the
BBE
™
process
is
fully
automatic
and
responds
to
the
program
material
instantly
and
quietly.
LED
Stack
Each
channel
is
equipped
with
a
set
of
LED
indicators
that
instantly
show
the
relative
amount
of
processing.
In
normal
operation,
the
amber
LED
flashes
alternately
with
the
green
LED.
The
red
LED
lights
up
only
on
program
peaks
and
indicates
maximum
processing.
The
“Clip"
LED
indicates
that
the
output
of
the
BBE
802
has
reached
the
maximum
level.
Line
Gain
Low
Frequency
Level
Process
In/Out
The
Line
Gain
is
a
front
panel
screwdriver
adjustment
which
sets
the
gain
of
the
unit
in
process
mode.
Fully
clockwise
is
unity.
Turning
counterclockwise
attenuates
the
output
in
process
mode.
The
low
frequency
level
control
is
a
front
panel
screwdriver
adjustment
which
sets
the
low
frequency
gain
in
the
process
mode
from
10Hz
to
200Hz.
Fully
counterclockwise
setting
of
the
control
is
“flat"
at
50Hz
while
increasing
the
adjustment
clockwise
provides
up
to
6dBu
of
boost
at
50Hz.
In
many
applications
the
boost
in
the
low
end
balances
out
the
processed
audio.
The
process
in/out
switch
allows
a
quick
comparison
of
processed
with
unprocessed
sound.
When
the
switch
is
in,
the
green
LED
lights
and
indicates
“process
on".
When
the
switch
is
out,
the
amber
LED
lights
and
indicates
“process
off”.
In
the
"process
off"
mode
the
audio
signal
goes
through
a
single
piece
of
wire
and
a
set
of
sealed
relay
contacts
—
no
noisy
switches
or
pots.
Set'Up
The
BBE
802
is
connected
into
the
audio
chain
in
series
with
the
signal
path
—
the
same
way
a
graphic
equalizer
or
limiter
is
connected.
The
output
of
the
mixer,
pre-amp
or
tape
recorder
feeds
the
input
of
the
BBE
802.
The
input
level
should
fall
within
the
nominal
range
as
outlined
in
the
specifications.
Setting-up
and
using
the
BBE
802
as
an
echo
send
device
like
a
digital
reverb
is
not
recommended.
The
processing
effect
is
not
fully
realized
when
the
output
of
the
BBE
802
is
summed
with
the
original
source
audio.
Specifications
BBE
802
Frequency
Response
Bypass
Process
Mode
Noise
in
Process
Mode
Total
Harmonic
Distortion
in
Process
Mode
Input
Characteristics
Input
Impedance
Nominal
Input
Range
Maximum
Input
Level
Output
Characteristics
Minimum
Load
Impedance
for
full
output
Nomimal
Output
Level
Maximum
Output
Level
Power
Requirements
120
VAC
(nominal)
50/60Hz
*See
instructions
below
A/C
Line
fused
protected
DC
to
20kHz
program
controlled
~90dBu
below
OdBu
output
level
less
than
0.15%
@
1kHz.
@
+4dBu
15K
Ohms
(balanced
or
unbalanced)
-10dBu
to
+
8dBu
for
best
operation
+
24dBu
(input
clip
point)
600
Ohms
(balanced
or
unbalanced)
-10dBu
to
+8dBu
+
24dBu
into
600
Ohm
Load
(clip
point)
8
Watts
(switchable
to
220
VAC)
Terminations/Connectors
Rear
Panel
XLR
and
1
/4"
Tip-Ring-Sleeve
(Tip
is
hot)
Dimensions
1
3/4"
H
X
17"
W
X
7
1/2"
D
Standard
1U
single
rack
Weight
6
1/2
lbs.
(2.5Kgs)
NOTE;
OdBu
=
0.775
Vrms
Instructions
for
changing
to
220
VAC
Operation:
Power
is
applied
to
the
BBE
802
by
means
of
the
standard
lEC
line
cord
provided.
This
cord
may
be
used
for
115
or
230
Volt
Operation.
There
is
a
small
plug-in
circuit
card
underneath
the
fuse
on
the
rear
panel.
This
card
must
be
turned
so
that
the
line
voltage
being
used
is
visible
through
the
plastic
window.
ALL
SPECIFICATIONS
SUBJECT
TO
CHANGE
WITHOUT
NOTICE
Calibration
Procedure
for
the
BBE
Model
802
For
serial
numbers
up
to
2XXXX
Equipment
Required:
Audio
Signal
Generator
AC/DC
Voltmeter
This
procedure
details
calibration
of
channel
A.
Comments
(in
brackets)
pertain
to
channel
B.
All
tests
are
done
with
a
signal
level
of
OdBu
(.775Vrms)
except
for
clip
indicator
calibration.
Procedure:
1.
Apply
AC
power.
Engage
the
process
control.
2.
Connect
a
jumper
between
TP2
{TP6
for
channel
B)
on
the
PC
board
and
signal
ground.
3.
Set
channel
A
process
control
to
mid-scale.
4.
Set
channel
A
line
gain
control
fully
clockwise.
5.
Set
channel
A
low
frequency
level
control
fully
counterclockwise.
6.
Set
VR6
(VR14
for
channel
B)
fully
clockwise.
7.
Set
signal
generator
to
500Hz.
Apply
signal
to
channel
A
input.
8.
Set
voltmeter
for
AC
volts
and
connect
to
TP4
on
the
PC
board
(TPS
for
channel
B).
9.
Adjust
VR8
(VR16
for
channel
B)
until
the
voltmeter
indicates
IVrms.
10.
Connect
the
voltmeter
to
channel
A
output.
11.
Adjust
VR6
(VR14
for
channel
B)
until
the
voltmeter
indicates
OdBu
(.775Vrms).
12.
Set
the
signal
generator
output
to
5kHz.
13.
Adjust
VR5
(VR13
for
channel
B)
until
the
voltmeter
indicates
OdBu
(.775Vrms).
14.
Set
the
signal
generator
output
to
500Hz.
15.
Set
the
voltmeter
to
DC
volts.
16.
Connect
the
voltmeter
to
TPS
(TP7
for
channel
B).
Note
the
DC
voltage
at
this
point.
(Approximately
0.5
VDC).
17.
Set
the
signal
generator
output
to
5kHz.
18.
Connect
the
voltmeter
to
TP1
(TPS
for
channel
B).
19.
Adjust
VR4
(VR12
for
channel
B)
until
the
voltmeter
reads
the
same
amplitude
found
in
Step
16,
but
in
a
negative
direction.
20.
Set
the
signal
generator
output
to
-i-24dBu
(12.28Vrms)
at
500Hz.
21.
Adjust
VR7
(VR15
for
channel
B)
until
the
front
panel
clip
indicator
just
lights.
THIS
COMPLETES
THE
CALIBRATION
OF
THE
BBE
MODEL
802
Service
We
recommend
that
if
at
all
possible
a
BBE
802
which
requires
repair
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
to
obtain
a
“Return
Authorization”
and
include
with
the
unit
a
copy
of
the
bill
of
sale
so
that
this
process
can
be
expedited.
As
the
repair
turnaround
time
is
minimal,
we
request
that
the
unit
be
sent
to
BBE
Sound,
Inc.
We
also
need
to
add
reliability
data
to
our
files
so
that
future
revisions
may
be
undertaken
if
necessary
to
improve
the
product.
Warranty
The
BBE
802
Processor
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
pre-paid
to
BBE
Sound.
Inc.,
5500
Bolsa
Ave..
Suite
245,
Huntington
Beach,
CA
92649.
We
will
pay
return
UPS
shipping
charges
within
the
U.S.A.
All
charges
related
to
non-U.S.
shipping,
including
customs
clearance,
will
be
billed.
This
warranty
will
be
considered
null
and
void
by
BBE
Sound,
Inc.
if
any
of
the
following
is
found;
1.
Equipment
has
been
physically
damaged.
2.
Equipment
shows
sign
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.
BBE
Sound,
Inc.
is
NOT
LIABLE
FOR
CONSEQUENTIAL
DAMAGES.
Should
the
processor
fail
to
operate
for
any
reason,
our
sole
obligation
is
to
repair
the
unit
as
described
above.
Maintenance
Maintenance
of
the
BBE
802
is
limited
to
proper
cleaning
of
the
unit
with
mild
household
cleaner
such
as
Formula
409®
or
Windex®.
The
chassis
and
cover
are
steel
finished
with
a
durable
polyurethane
paint,
white
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
this
unit
there
is
little
or
no
drift
of
the
components
in
the
BBE
802
which
would
cause
a
change
in
calibration.
A
very
conservative
design
philosophy
has
resulted
in
a
piece
of
equipment
which
runs
very
cool
and
should
give
years
of
trouble-free
service.
TAPE
INPUTS
RECORDING
STUDIOS
FIGURE
2
CONCERT
SOUND
SYSTEM
FIGURE
3
MASTER
CASSETTE/CARTRIDGE
2-TRACK
p
p]
p
p
FIGURE
4
TELEPHONE
LINE
INDUSTRIAL
AMPLIFIER
(OR
MICROPHONE
PREAMP
OUT)
INDUSTRIAL
PAGING
SYSTEM
FIGURE
5
BROADCAST
APPLICATION
RADIO
CONSOLE
TO
PEAK
LIMITERS
FIGURE
6
MOVIE
THEATER
APPLICATIONS
FIGURE
7
DISCO
CLUB
APPLICATION
TURNTABLE
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