Bogen WMA-80 Owner's manual
BOGEN
COMMUNICATIONS,
INC.
WALL
MOUNT
MODULAR
AMPLIFIERS
WMA-80
&
WMA-160
INSTALLATION
AND
OPERATION
INSTRUCTIONS
The
Bogen
WMA-80*
and
WMA-160
are
professional
quality
wall-mounting
amplifiers
suited
for
use
in
gymnasiums,
auditori¬
ums,
and
banquet
rooms
where
inconspicuous,
permanent
mount¬
ing
is
desired.
Both
models
combine
modular
flexibility
with
power
MOSFET
performance
and
are
available
in
flush-mount
or
sur¬
face-mount
configurations.
A
locking
panel
on
the
front
cover
secures
the
unit
when
not
in
use,
and
is
designed
so
that
it
cannot
be
removed
without
access
to
the
area
behind
the
panel.
The
WMA-80
and
WMA-160
arc
ralcd
at
80
ami
160
walls,
respectively.
Each
has
8
input
channels:
a
built-in
Lo-Z
mic¬
rophone
input
(with
a
3-pin
female
connector);
a
Hi-Z
Projector
input
(with
1/4"
connector);
and
six
module
ports.
The
ports
accept
any
combination
of
the
Bogen
D-Series
plug-in
modules
to
define
the
function
of
each
channel.
Inputs
are
mixed
on
an
active
buss,
allowing
interaction
for
three
levels
of
priority
Modules
set
to
priority
level
1
are
muted
by
modules
set
to
priority
levels
2
or
3.
Modules
set
to
priority
level
2
mute
modules
set
to
level
1
and
are
muted
by
modules
set
to
priority
level
3.
To
obtain
the
best
control
over
room
acoustics,
the
WMA
Series
features
a
10-band
graphic
equalizer,
which
provides
±8dB
at
ISO
centers
of
125,200,315,
500,800,1.2k,
2k,
3.1k,
5k,
and
8k
Hz.
Equalizer
slide
controls
are
located
behind
the
front
cover
to
prevent
tampering
after
installation
and
setup.
A
low-cut
filter
(-3dB
@
65Hz)
and
tone
control
bypass
switch
are
also
provided
and
are
located
in
the
module
port
cage.
Individual
level
controls
are
provided
for
each
channel.
A
Master
Volume
Control
sets
the
final
output
level.
A
bar-graph-
type
LED
output
meter
provides
output
level
indication.
Power
MOSFET
output
stages
and
protective
circuitry
provide
performance
and
reliability
and
eliminate
the
need
for
output
fuses
and
thermal
fuse
links.
A
built-in
compressor
circuit
protects
speakers/drivers
from
damage
by
limiting
the
output
of
the
pream¬
plifier
to
1
volt.
Each
amplifier
has
a
direct
4-ohm
output
for
use
in
professional
applications
plus
transformer-coupled
8-ohm
and
25V
and
70V
outputs.
The
amplifiers
operate
from
a
120
volt,
60Hz
AC
source.
A
push-to-rescl
circuit
breaker
is
included.
UNPACKING
The
amplifier
was
carefully
checked
before
leaving
the
factory.
Inspect
the
shipping
container
and
components
for
evidence
of
improper
handling.
If
the
unit
has
been
damaged,
place
an
imme¬
diate
claim
with
the
dealer/distributor
from
whom
the
unit
was
purchased.
If
the
unit
was
shipped
directly
to
you,
notify
the
transportation
carrier
without
delay
and
file
a
claim.
INSTALLATION
CAUTION
These
installation
instructions
are
for
use
by
qualified
personnel
only.
To
avoid
an
elertrio
shook,
do
not
perform
any
installation
or
service
procedures
other
than
that
con¬
tained
in
the
Operating
Instructions
unless
you
are
qualified
to
do
so.
Refer
all
servicing
to
qualified
service
pzmmneL
BACK
BOX
INSTALLATION
A
surface-mount
or
flush-mount
cabinet
is
required
for
instal¬
lation.
Follow
the
instructions
on
page
2
of
this
manual
to
install
the
surface
mount
(BB-S)
or
flush-mount
(BB-F)
enclosure.
OUTPUT
CONNECTIONS,
LOW-CUT,
EQ
DEFEAT
The
amplifiers
provide
a
direct
output
at
4-ohms
and
trans¬
former-coupled
8-ohm,
25V
and
70V
taps
for
use
with
distributed
systems.
The
WMA-80
includes
a
25V
center-tapped
output.
When
using
transformer-coupled
taps,
be
sure
that
the
link
on
the
output
terminal
strip
connects
the
OUTPUT
TRANSFORMER
IN
terminal
to
the
DIRECT
+
terminal.
Remove
the
link
when
using
the
direct
output
A
Low-Cut
filter
switch,
located
in
the
port
cage,
reduces
low-frequencies
when
using
transformer-coupled
outputs.
Set
the
switch
to
IN
when
using
transformer-coupled
outputs,
and
OUT
when
using
the
direct
output.
The
Tone
Control
defeat
switch,
located
in
the
port
cage,
bypasses
the
amplifier’s
equalizer
filter
controls
for
a
flat
response.
Set
the
switch
to
IN
to
enable
the
equalization
filters
and
OUT
to
bypass
the
filters.
MODULE
INSTALLATION
Before
installing
each
module,
follow
the
instructions
on
page
3
of
this
manual
to
configure
it
for
the
desired
function
or
priority
level.
Set
the
HIGH-/LOW-CUT
filter
controls
and
GAIN
con¬
trols
on
modules
so
equipped
to
mid-rotation.
To
prevent
damage
to
the
modules
or
the
amplifier,
be
sure
that
the
amplifier
POWER
switch
Is
in
the
OFF
position
before
installing
or
removing
modules.
To
install
modules,
align
the
top
and
bottom
edges
of
the
module
printed
circuit
board
in
the
slots
of
the
port,
and
slide
into
the
port
to
engage
the
edge
connectors.
Secure
the
module
with
two
screws.
ModiHes
set
to
priority
level
1
receive
(and
are
muted
by)
priority
signals
from
any
module
set
to
priority
level2
or
3.
Modules
set
to
priority
level
2
send
priority
signals
to
mute
any
modules
set
to
priority
level
1,
and
receive
priority
signals
from
any
module
set
to
priority
level
3.
Modules
set
to
priority
level
3
send
priority
signals
to
mute
modules
set
to
priority
level
1
or
2.
•WMA-80
is
UL
listed.
Printed
In
Korsa
9008
94-5887-03
BACK
BOX
INSTALLATION
1
*
1
)
BB-8
INSTALLATION
1.
INSTALL
Bfl-S
BACK
BOX
ON
WALL
MAKING
SURE
THAT
THE
BOX
IS
SQUARELY
MOUNTED.
ALLOW
FREE
ACCESS
ABOVE
BOX
FOR
AC
WIRING
AND
ABOVE
OR
BELOW
BOX
FOR
AUDIO
WIRING.
2.
HAVE
POWER
WIRING
RUN
NEAR
UPPER
RIGHT
HAND
COB
HER
WMCRE
BOX
WILL
BE
MOUNTED.
S
SECURE
BOX
ON
WALL
WITH
SCREWS
THROUGH
BACK
HOLE8
(4
SCREWS).
<A2)
BB-F
INSTALLATION
1.
PREPARE
MOUNTING
HOLE
FOR
BB-F
BACK
BOX.
HOLE
8IZE
SHOULD
BE
24-13/1671
X
MINIMUM
OPENING
WITH
STUDS
OR
MOUNTING
SURFACES
ON
EACH
SIDE.
2.
HAVE
POWER
WIRING
RUN
NEAR
UPPER
RIGHT
HAND
CORNER
WHERE
BOX
WILL
BE
MOUNTED.
3.
INSTALL
BB-F
BACK
BOX
IN
WALL
MAKING
SURE
THAT
THE
BOX
IS
SQUARELY
MOUNTED
AND
THE
FRONT
SURFACE
FLUSH
WITH
THE
FMUSHED
WALL.
USE
SHIMS
IF
NECESSARY.
ALLOW
FREE
ACCESS
ABOVE
BOX
FOR
AC
WIRING
AND
ABOVE
OR
BELOW
BOX
FOR
AUDIO
WIRING.
4.
SECURF
RAX
IN
WALL
WITH
SCREWS
THROUGH
SIDE
SLOTS
(4
SCREWS).
5-WITH
BOX
POSITIONED,
INSTALL
4
ADDITIONAL
SCREWS
IN
HOLES
NEXT
TO
04-OT3.
BB-F
<B)
JUNCTION
BOX
WIRING
1.
SUPPLY
AC
POWER
TO
UNIT
THROUGH
CONDUIT,
BX
OR
ROMEX
M
ACCORDANCE
WITH
LOCAL
ELECTRICAL
COOES
9
SNAP
AC
RECEPTACLE
INTO
JUNCTION
BOX
(GNO
PIN
DOWN)
AND
CONNECT
WIRES
AS
SHOWN
USING
WIRE
NUT8.
S
8B-F;
IN8TALL
JUNCTION
BOX
IN
BB-F
AND
SECURE
WITH
4
#«X3/8
SCREWS.
BBS:
INSTALL
JUNCTION
BOX
IN
88-S
AND
accuse
with
*
x
a/e
screws
ano
KEP8NUTS.
<C)
PREPARATIONS
BEFORE
IN8TAUJNO
AM
PURER
1.
RUN
ALL
AUDIO
LEADS
INTO
WALL
BOX.
THE
PREFERRED
ARRANGEMENT
IS
FOR
OUT¬
PUT
LEADS
TO
ENTER
THROUGH
THE
TOP
AND
INPUT
LEADS
TO
ENTER
THROUGH
THE
BOTTOM.
USE
KNOCKOUTS
AS
NECES¬
SARY.
MAKE
SURE
WIRES
DO
NOT
REST
AGAINST
SHARP
EDGES
OF
BOX
2.
INSTALL
HINGES
(PACKED
WITH
AMPLIFIER)
USING
6
#8
x
3/8
SCREWS.
DO
NOT
INSTALL
Uirw
F
RTRFWQ
OF
I
OWED
UIUOF
(USED
FOR
GROUND
STRAP
CONNECTION
-
SEE
*D2*).
a
CHECK
TO
SEE
THAT
AC
POWER
IS
AVAIL¬
ABLE
AT
THE
OUTLET.
FRONT
PANEL
MOUNTING
1.
MOUNT
FRONT
PANEL
(BUT
DO
NOT
TIGHTEN)
WITH
4
#8-32
X
3/8
SCREWS
AT
TOP
AND
BOTTOM
OF
PANEL
2.
INSTALL
2
#8
X
3/8
SCREWS
ON
INSIDE
UP8
OF
DOOR
OPENING,
THEN
TIGHTEN
ALL
MOUNTING
SCREWS.
DO
NOT
OVEn-
TIGHTEN
AS
U-CLIP
WILL
STRIP.
3.
CHECK
TO
SEE
THAT
DOOR
OPENS
AND
CLOSE8
CORRECTLY.
<D>
AMPUFIER
INSTALLATION
1.
MOUNT
AMPLIFIER
ON
BACK
BOX
BY
ALIGN¬
ING
HINGE
PINS
AND
LOWERING
INTO
PLACE.
2.
CONNECT
GROUND
STRAP
8Y
INSERTING
MIDDLE
HINGE
SCREWS
THROUGH
LUGS
OF
GROUND
STRAP
A8
SHOWN
IN
ILLUSTRA¬
TION.
a
ROUND
STRAP
MUST
BE
(NETAUXO
TO
MEET
UL
REQUIREMENTS.
a
MAKE
NECESSARY
INPUT
AND
OUTPUT
CON¬
NECTIONS
(CARE
SHOULO
BE
TAKEN
TO
KEEP
INPUT
AND
OUTPUT
LEADS
SEPARATED
AS
MUCH
AS
POSSIBLE).
A.WITMPuWEKSWIien
IUHNEDOFF,
PLUS
AC
CORD
INTO
SIDE
OUTLET
ON
JUNCTION
BOX
5.
TURN
AMPUFIER
ON
AND
CHECK
CONNEC¬
TIONS.
6.
SECURE
AMPUFIER
ILBING
a
4AJW
.
1/9
SCREWS.
2
MODULE
SETUP
(FOR
QUALIFIED
SERVICE
PERSONNEL
ONLY)
Sound
Reinforcement
-
Modules
MM-F
&
MM-S
Low-impedance,
transformer-balanced
microphone
preampli¬
fier
module
with
HIGH-/LOW-CUT
filters,
GAIN
control
(25dB
range),
phantom
power.
MM-F
has
3-pin
female
connector;
MM-S
has
screw
terminals
(Terminal
#1
Is
GND,
#2
is
LO,
and
#3
is
HI
on
all
modules).
Phantom
Power:
Move
PHANTOM
P.S.
jumper
to
the
ON
position
for
l
22V
phantom
supply.
Select
OFF
position
to
bypass.
Microphone
Pacing
-
Module
MP-S
Signal-activatea
low-impedance,
transformer-balanced
micro¬
phone
preamplifier
module
with
HIGH-/LOW-CUT
filters,
GAIN
control
(25dB
range).
Automatic
Level
Control
((kLC),
three
levels
of
priority
and
phantom
power
are
jumper
selected.
Screw
terminal
connectors.
Phantom
Power:
Move
PH.
P.S.
jumper
to
ON
position
for
+22V
phantom
supply.
Place
jumper
on
either
header
pin
to
bypass.
ALC.
Move
ALC
jumper
lu
ON
pusltiun;
muve
lu
OFF
tu
bypass.
Muting
Priority
(using
PRIORITY
ASSIGN
jumpers):
Level
1
—
Place
one
jumper
in
the
"1"
position
and
store
the
unused
jumper
on
an
empty
pin.
Level
2
—
Place
both
jumpers
in
the
"2"
position.
Level
3
—
Place
one
jumper
in
the
"3"
position
and
store
the
unused
jumper
on
an
empty
pin.
Telephone
Paging
—
Module
TP-S
Signal-activated
telephone
paging
module
provides
a
600-ohm
balanced
input
with
-24dBm
sensitivity
for
matching
to
telephone
page
lines.
Includes
IIIGH-/LOW-CUT
filters
and
GAIN
control
(25dB
range).
Automatic
Level
Control
(ALC)
and
three
levels
of
priority
are
jumper-selected.
Screw
terminal
connectors.
ALC:
Move
the
ALC
jumper
to
ON
position
to
enable
ALC;
move
to
OFF
position
to
bypass.
Muting
Priority
(using
PRIORITYASSIGN
jumpers):
Level
1
—
Place
one
jumper
in
the
"1"
position
and
store
the
unused
jumper
on
an
empty
pin.
Level
2
—
Place
both
jumpers
in
the
"2"
position.
Level
3
—
Place
one
jumper
in
the
"3"
position
and
store
the
unused
jumper
on
an
empty
pin.
Auxiliary
Input
—
Module
BL-5
Transformer-balanced
auxiliary
input
module
suitable
for
line¬
bridging
or
line-matching.
Use
the
printed
circuit
board
jumper
to
select
either
600-ohm
input
or
10-kitohm
input.
Screw
terminal
connectors.
Line
Output
-
Module
LO-S
Module
provides
jumper-selected
600-ohm
transformer-bal¬
anced
(
+
4dBm)
output
or
0.5-watt
direct
output
at
8
ohms.
May
be
used
for
line
output
from
the
D-Series
mixing
buss
or
for
music-on-hold
applications.
Parallel
RCA
jades
permit
one
music
source
to
be
used
for
M.O.H.
and
background
music.
A
jumper-
selected
pad
provides
20dB
attenuation
of
the
signal
from
the
music
source.
LEVEL
control
sets
the
module
output
level.
Output
Selection:
Select
DIRECT
or
XFMR-coupled
output
by
placing
jumper
J4
in
the
appropriate
position.
(When
using
the
direct
output,
connect
the
8-ohm
load
between
screw
ter¬
minals
#1
and
#3.
When
using
transformer
output,
terminal
#1
is
GND,
#2
is
LO,
and
#3
Is
HI.)
Place
jumper
J2
in
L.O.
position
for
line
output
or
in
M.O.H.
position
for
music-on-hold
applications.
Connect
the
music
source
to
the
MUSIC
IN
(RCA)
jack;
the
MUSIC
OUT
jack
is
paralleled
to
allow
same
signal
source
to
be
used
for
back¬
ground
music.
Attenuator
Pad:
Place
jumper
J3
in
the
20dB
position
to
at¬
tenuate
the
signal
connected
to
the
MUSIC
IN
jack.
Bypass
the
pad
by
plating
the
jumper
in
the
OdB
position.
Tone
Signal
Generation
—
Module
TG-S
The
module
generates
four
distinct
tones:
CHIME,
STEADY,
ALARM,
and
BURST.
May
be
assigned
to
any
of
three
levels
of
priority.
Requires
customer-supplied
contact
closure
between
the
desired
Tone
and
ENABLE
screw
terminal
connectors.
Muting
Priority
(using
PRIORITY
ASSIGN
jumpers):
Level
1
—
Place
one
jumper
in
the
"1"
position
and
store
the
unused
jumper
on
an
empty
pin.
Level
2
—
Place
both
jumpers
in
the
"2"
position.
Level
3
—
Place
one
jumper
in
the
"3"
position
and
store
the
unused
jumper
on
an
empty
pin.
Remote
Control/Compression
-
Module
vc-c
Dual-function
(jumper-selected)
compressor/remote
volume
control
module.
The
compressor
limits
the
power
amplifier
input
signal
to
1
volt
to
prevent
overdrive.
The
DC-operated
full
range
volume
control
allows
any
output
setting
up
to
the
maximum
preset
level
of
the
MASTER
control
on
the
D-Series
unit.
Compression:
Set
the
PRE/AMP
LINK
switch
on
the
D-Series
unit
to
OUT
position.
Connect
the
PREAMP
OUT
jack
on
the
D-Series
unit
to
the
VC-C
IN
connector.
Connect
the
VC-C
OUT
jade
to
the
AMP
IN
connector
on
the
D-Series
unit.
Place
jumper
J1
in
the
IN
position
to
enable
the
compression
func¬
tion;
move
to
the
OUT
position
to
bypass.
Remote
Volume
Control:
Connect
accessory
RVC-D
to
ter¬
minals
#2
and
#3.
FM
Reception
-
Module
FM-T
FM
tuner
module
designed
as
a
preset
background
music
source.
Screwdriver-adjusted
tuning.
The
output
is
jumper-se¬
lected
to
the
mixing
bus
of
the
D-Series
unit
or
to
the
module’s
RCA-type
connector.
May
be
configured
to
accept
priority
signals
from
other
modules.
Monaural
operation.
Screw
terminals
for
antenna.
Output:
Place
jumper
J1
in
OUT
position
to
assign
tuner
output
to
the
module's
RCA
connector.
Place
jumper
J1
in
MIX
DUS
position
to
assign
module’s
output
to
the
D-Series
mixing
buss.
Mute:
Place
jumper
J2
in
the
ON
position
to
mute
FM-T
with
any
level
2
or
3
priority
signal.
Place
in
OFF
position
to
prevent
muting
from
priority
signals.
MIC/Line
Remote
Control
-
Module
MR-S
Low-impedance
transformer-coupled
MIC
preamp,
or
line-
level
module
with
HIGH-/IjOW-CUT
filters,
GAIN
control
(25dB
range),
phantom
power.
Full-range
DC-operated
full-range
RVC
allows
any
output
setting
up
to
maximum
preset
on
amplifier
channel
control.
Screw
terminal
connectors.
Input:
Set
Jumper
J2
to
MIC
position
for
microphone
input.
Set
to
LINE
position
for
line
level
input.
Phantom
Power
Move
jumper
J1
to
ON
position
for
+22V
phantom
supply.
Select
OFF
position
to
bypass.
Mute:
Place
jumper
J3
in
the
ON
position
to
mute
MR-S
with
any
level
2
or
3
priority
signal.
Place
in
OFF
position
to
prevent
muting
from
priority
signals.
RVC:
Connect
accessory
RVC-D
to
terminals
#1
and
#4.
3
PHYSICAL
FEATURES
FRONT
CHASSIS
CONTROLS
AND
INDICATORS
(Refer
to
Figure
1)
POWER
LED
LEVEL
INDICATORS
Bar-type
LED
meter
provides
a
graphic
display
of
the
output
level.
Illuminates
red
when
levels
above
OdB
are
reached,
to
indicate
possible
signal
clipping
CHANNEL
1
-
G
Individual
lovol
controls
for
modulo
input
channels
1
through
6
MASTER
Master
control
sets
overall
output
level
MIC
Level
control
for
fixed
microphone
input
channel
PROJECTOR
Level
control
for
the
fixed
projector
input
MIC
IN
Professional
3-pln
female
connector
provides
a
Lo-Z
balanced
microphone
input
PROJECTOR
IN
1
/4"
connector
provides
a
Hi-Z
projector
input.for
audio-visual
applications
EQ
FILTER
10
linear-action
filter
controls
provide
±8dB
at
ISO
centers
of
125,200,315,500,800,1.2k,
2k,
3.1k.
5k.
and
8k
Hz
AC
BREAKER
Press-to-Reset
AC
circuit
breaker
protects
against
excessive
current
flow
REAR
CHASSIS
CONTROLS
AND
CONNECTORS
(Refer
to
Figure
2)
OUTPUT
TERMINAL
STRIP
Screw-terminal
strip
for
connection
to
direct
and
transformer-coupled
outputs.
Remove
the
link
between
the
DIRECT
+
terminal
and
OT
IN
terminal
when
using
direct
output
LO-CUT
FILTER
SWITCH
IN:
Provides
-3dB
attenuation
@
65Hz,
6dB/octave
OUT:
Bypasses
Lo-Cut
filter
action
TONE
CONTROL
SWITCH
IN:
Enables
EQ
filter
controls
OUT:
Bypasses
EQ
filter
controls
for
flat
response
FIGURE
1
FIGURE
2
(WMA-80
shown)
OPERATION
POWER
The
front-panel-mounted
rocker
switch
applies
power
to
the
amplifier
and
illuminates
when
power
is
applied.
EQUALIZATION
Equalizer
filter
controls
are
accessible
by
removing
the
front
cover
(WMA-D).
The
equalizer
provides
±8dB
at
ISO
centers
of
125,
20ft,
500,
800,
1.2k,
2k,
3.1k,
5k,
and
8kHz.
Response
is
flat
at
the
center
detent
position.
CAUTION
Removal
of
the
front
cover
presents
cut
electrical
shock
hazard.
For
this
reason,
adjustment
of
equalizer
filter
slide
controls
should
be
performed
by
qtmGfied
service
personnel
only.
LEVEL
CONTROLS
The
level
of
each
channel
is
controlled
by
an
individual
CHAN¬
NEL
control.
The
overall
output
level
is
controlled
by
the
MASTER
control.
The
T.ED
output
metftr
will
begin
to
illuminate
red
as
the
amplifier
reaches
full
output
power.
A
constantly
lit
red
LED
indicates
possible
signal
clipping.
AC
CIRCUIT
BREAKER
If
the
AC
circuit
breaker
trips,
the
power
switch
pilot
lamp
will
go
out
and
there
will
be
no
output.
Place
the
POWER
switch
in
the
OFF
position
and
reset
the
breaker
by
inserting
a
screwdriver
into
the
hole
on
the
front
panel
and
depressing
the
reset
switch.
Once
the
breaker
has
been
reset,
return
the
POWER
switch
to
ON.
If
the
breaker
trips
again,
the
difficulty
must
be
investigated
by
a
qualified
service
technician.
THERMAL
BREAKER
The
thermal
breaker
opens
when
the
temperature
at
the
output
transistor
heat
sink
reaches
105°C
(220°F).
If
the
breaker
opens,
there
will
be
no
output
but
the
power
switch
pilot
lamp
will
remain
illuminated.
Wait
approximately
two
minutes
for
the
breaker
to
reset.
If
the
breaker
resets
and
then
opens
again,
arrange
for
qualified
service
personnel
to
investigate
the
cause
of
the
tem¬
perature
overload.
This
may
be
due
to
improper
load
connections
or
excessive
environmental
heat
(ambient
air
temperature
above
40°C)
with
inadequate
ventilation.
SERVICE
CAUTION
Then?
are
no
user-semiceabh
parts
within
the
unit.
Refer
all
servicing
to
qtmlified
service
personnel
If
you
experience
difficulty
with
this
unit,
do
not
hesitate
to
ask
uur
advice
or
assistance.
Information
can
be
obtained
Dy
willing
to
Service
Department,
Bogen
Communications,
Inc.,
P.O.
Box
575,
Ramsey
NJ
07446.
Include
the
model
number
and
series
designa¬
tion
(a
letter
followed
by
numbers,
stamped
on
the
amplifier
chassis)
of
your
unit.
Describe
the
difficulty
and
include
details
on
the
electrical
connection
to
associated
equipment.
We
will
send
you
service
information
if
the
trouble
appears
simple,
or
the
name
and
nddre.ee
nf
the
nearest
authorized
Bogen
Service
agency
to
which
you
can
send
the
unit
for
repairs.
When
shipping
the
unit,
pack
carefully.
Send
the
unit,
insured
and
prepaid,
via
any
responsible
carrier.
The
unit
will
be
promptly
repaired
and
returned
collect
(freight
prepaid
while
in
warranty).
SPECIFICATIONS
Output
Power
Rating
WMA-80:
WMA-160:
80
Watts
@
4-ohms,
8-ohms/25V
(WMA-80),
25V
and
70V
160
Watts
@
4-ohms,
8-ohms,
25V
and
70V
Frequency
Response
20Hz
to
20kHz,
+0,-2dB
Distortion
Direct:
0.3%
(max.)
Transformer:
0.3%
(max.)
input
sensitivity/impedance
Module
Channels:
100mV/10-kilohms
Projector
Input:
IOOmV/10-kilohms
Mic.
Input:
.'Wty
V/300-oh
m
e
Equalization
±8dB
@
ISO
centers
of
125,
200,
315,
500,
800,1.2k,
2k,
3.1k,
5k,
and
8kHz
Hum
&
Noise
-75dB
or
better
Inputs
Low-Z
balanced
microphone,
Hi-Z
Projector,
6
input
module
ports
Lu-Cut
niter
-3dB
@
63Hz,
wu/octave
Outputs
Direct
-
4-ohms;
Transformer
-
8-ohms,
25V,
25VCT
(WMA-80),
70V
Controls
Level
controls
for
channels
1
-
6,
MIC,
PROJECTOR;
MASTER
Volume;
10
Equalizer
filter
slide
controls:
Illuminated
POWFR
switch;
LO-CUT
filter
switch;
TONE
IN/OUT
switch;
Push-to-Reset
circuit
breaker
Dimensions
BB-F
Flush-mount
Box:
BB-S
Surfaco
mount
Box:
WMA-D
Front
Cover:
24-3/4"H
x
14-1/4"W
x
3-7/8‘D
(62.8x36.2x9.8cm)
26-3/4*H
x
16-1/4-W
x
3-7/Q"D
(67.9x41.3x9.8cm)
26-3/4'H
X
16-1
/4"W
x
3/4"D
(67.9x41.3x1.9cm)
Power
Required
120V,
60Hz
AC
-
5
COMMUNICATIONS,
INC-
50
SPRING
STREET.
P,0.
Bo«
575
RAMSEY.
NJ
07446
(201)
934-8500
This manual suits for next models
1
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