Adcom GFA-7400 User manual
A
DCOM
GFA
-7400
&
GFA-7300
High
Current
5-Channel
Power
Amplifiers
OWNER’S
MANUAL
THE
FOLLOWING
PRECAUTIONS
AND
SAFETY
INSTRUCTIONS
ARE
REQUIREMENTS
OF
UL
AND
CSA
SAFETY
REGULATIONS
Warning:
To
reduce
the
risk
of
fire
or
electric
shock,
do
not
expose
this
unit
to
rain
or
moisture.
CAUTION
RISK
OF
ELECTRIC
SHOCK
DO
NOT
OPEN
AVIS.
RISQUE
DE
CHOC
ELECTRIQUE-NE
PAS
OUVRIR
The
graphic
symbol
of
a
lightning
flash
with
an
arrow
point
within
a
triangle
signifies
that
there
is
dangerous
voltage
within
the
unit
and
it
poses
a
hazard
to
anyone
removing
the
cover
to
gain
access
to
the
interior
of
the
unit
Only
qualified
service
personnel
should
make
any
such
attempt.
The
graphic
symbol
of
an
exclamation
point
within
an
equilateral
triangle
warns
a
user
of
the
device
that
it
is
necessary
to
refer
to
the
instruction
manual
and
its
warnings
for
proper
operation
of
the
unit
Do
not
place
this
unit
on
an
unstable
cart,
stand,
tripod,
bracket,
or
table
The
unit
may
fall,
causing
serious
injury
to
a
child
or
adult,
and
serious
damage
to
the
unit
Use
only
with
a
cart,
stand,
tripod,
bracket,
or
table
recommended
by
the
manufacturer,
or
sold
with
the
unit
Any
mounting
of
the
device
should
follow
the
man-
ufacturer’s
instructions,
and
should
use
a
mounting
ac¬
cessory
recommended
by
the
manufacturer
Read
all
the
safety
and
operating
instructions
before
connecting
or
using
this
unit
Retain
this
notice
and
the
owner’s
manual
for
future
reference
All
warnings
on
the
unit
and
in
its
operating
instructions
should
be
adhered
to
All
operating
and
use
instructions
should
be
followed
Do
not
use
this
unit
near
water,
for
example,
near
a
bathtub,
washbowl,
kitchen
sink,
laundry
tub,
in
a
wet
basement,
or
near
a
swimming
pool
The
unit
should
be
installed
so
that
its
location
or
position
does
not
interfere
with
its
proper
ventilation
For
example,
it
should
not
be
situated
on
a
bed,
sofa,
rug,
or
similar
surface
that
may
block
the
ventilation
openings,
or
placed
in
a
built-in
installation,
such
as
bookcase
or
cabinet,
that
may
impede
the
flow
of
air
through
its
ventilation
openings
The
unit
should
be
situated
away
from
heat
sources
such
as
radiators,
heat
registers,
stoves,
or
other
devices
(including
amplifiers)
that
produce
heat
The
unit
should
be
connected
to
a
power-supply
outlet
only
of
the
voltage
and
frequency
marked
on
its
rear
panel
The
power-supply
cord
should
be
routed
so
that
it
is
not
likely
to
be
walked
on
or
pinched,
especially
near
the
plug,
convenience
receptacles,
or
where
the
cord
exits
from
the
unit
Clean
unit
only
as
recommended
in
its
instruction
manual
The
power-supply
cord
of
the
unit
should
be
unplugged
from
the
wall
outlet
when
it
is
to
be
unused
for
a
long
period
of
time
Care
should
be
taken
so
that
objects
do
not
fall,
and
liquids
are
not
spilled,
into
the
enclosure
through
any
openings
This
unit
should
be
serviced
by
qualified
service
personnel
when
A
The
power
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
liquids
of
any
kind,
or
D
The
unit
does
not
appear
to
operate
normally,
or
exhibits
a
marked
change
in
performance,
or
E
The
device
has
been
dropped,
or
the
enclosure
damaged
DO
NOT
ATTEMPT
SERVICING
OF
THIS
UNIT
YOURSELF.
REFER
SERVICING
TO
QUALIFIED
SERVICE
PERSONNEL.
ATTENTION
POUR
PREVENIR
LES
CHOCS
ELECTRIQUES
NE
PAS
UTILISER
CETTE
FICHE
POLARISEE
AVEC
UN
PROLONGATEUR,
UNE
PRISE
DE
COURANT
OU
UNE
AUTRE
SORTIE
DE
COURANT,
SAUF
SI
LES
LAMES
PEUVENT
ETRE
INSEREES
A
FOND
SANS
EN
LAISSER
AU-
CUNE
PARTIE
A
DECOUVERT
CAUTION
TO
PREVENT
ELECTRIC
SHOCK
DO
NOT
USE
THIS
POLARIZED
PLUG
WITH
AN
EXTENSION
CORD,
RECEPTACLE
OR
OTHER
OUTLET
UN¬
LESS
THE
BLADES
CAN
BE
FULLY
INSERTED
TO
PREVENT
BLADE
EXPOSURE
CAUTION
POWER
LINES
Any
outdoor
antenna
must
be
located
away
from
all
power
lines.
OUTDOOR
ANTENNA
GROUNDING
If
an
outside
antenna
is
connected
to
your
tuner
or
tuner-preamplifier,
be
sure
the
antenna
system
is
grounded
so
as
to
provide
some
protection
against
voltage
surges
and
built-up
static
charges.
Section
810
of
the
National
Electrical
Code,
ANSI/NFPA
No.
70-1984,
provides
information
with
respect
to
proper
grounding
of
the
mast
and
supporting
structure,
grounding
of
the
lead-m
wire
to
an
antenna
discharge
unit,
size
of
grounding
conductors,
location
of
antenna
discharge
unit,
connection
to
grounding
electrodes,
and
requirements
for
the
grounding
electrode
a
Use
No.10
AWG
(5.3
mm
2
)
copper,
No
8
AWG
{8.4
mm
2
)
aluminum,
No.17
AWG
(1
0
mm
2
)
copper-clad
steel
or
bronze
wire,
or
larger,
as
a
ground
wire.
b.
Secure
antenna
lead
in
and
ground
wires
to
house
with
stand-off
insulators
spaced
from
4-6
feet
{1
22-1
83
m)
apart.
c.
Mount
antenna
discharge
unit
as
close
as
possible
to
where
lead-in
enters
house.
d.
Use
jumper
wire
not
smaller
than
No.6
AWG
(13.3
mm
2
)
copper,
or
the
equivalent,
when
a
separate
antenna-grounding
electrode
is
used.
See
NEC
Section
810-21
(j).
EXAMPLE
OF
ANTENNA
GROUNDING
AS
PER
NATIONAL
ELECTRICAL
CODE
INSTRUCTIONS
CONTAINED
IN
ARTICLE
810
-
RADIO
AND
TELEVISION
EQUIPMENT
NOTE
TO
CATV
SYSTEM
INSTALLER
This
reminder
is
provided
to
call
the
CATV
system
installer’s
attention
to
Article
820-22
of
the
National
Electrical
Code
that
provides
guidelines
for
proper
grounding
and,
in
particular,
specifies
that
the
cable
ground
shall
be
connected
to
the
grounding
system
of
the
building,
as
close
to
the
point
of
cable
entry
as
practical
TABLE
OF
CONTENTS
SAFETY
INFORMATION.1
INTRODUCTION
WARRANTY
INFORMATION.2
DESCRIPTION
OF
UNIT
FEATURES
GFA-7400.3
FEATURES
GFA-7300.3
INSTALLATION
&
HOOKUP
UNPACKING
THE
GFA-7400/7300.4
PLACING
THE
GFA-7400/7300.4
QUICK
CONNECTION.5
CONNECTION
DIAGRAM.6
INPUTS
AND
OUTPUTS.7
CARING
FOR
YOUR
GFA-7400/7300.8
OPERATION
INPUTS
AND
OUTPUTS.9
FUSES
AND
AC
SUPPLY.10-11
LED
DISPLAYS.12-13
TROUBLESHOOTING
RESOLVING
PROBLEMS.14-15
SERVICE
INFORMATION.16
SPECIFICATIONS.17-18
INTRODUCTION
Congratulations
on
your
decision
to
purchase
the
GFA-7400
or
GFA-7300
5-channel
power
amplifier.
The
GFA-7400
and
GFA-7300
have
been
designed
to
be
high
performance
and
musically
accurate
in
a
configuration
specifically
designed
to
integrate
with
any
home
theater
processor.
You
have
made
a
wise
choice
that
will
reward
you
for
years
to
come
with
exceptionally
accurate
and
musical
sound
reproduction.
To
realize
the
full
potential
of
your
new
amplifier,
and
before
making
any
connections
to
it,
please
read
these
operating
and
installation
instructions
thoroughly.
ADCOM
PROTECTION
PLAN
(USA
ONLY)
ADCOM
offers
the
enclosed
valuable
Limited
Warranty.
Please
read
the
details
on
the
Warranty
Card
carefully
to
understand
the
extent
of
the
protection
offered
by
the
Warranty,
its
reasonable
limitations,
and
what
you
should
do
in
order
to
obtain
its
benefits.
Be
sure
to
verify
that
the
serial
number
printed
on
the
rear
panel
matches
the
serial
number
on
the
outer
carton.
If
any
number
is
altered
or
missing,
you
should
notify
us
immediately
in
order
to
ensure
that
you
have
received
a
genuine
ADCOM
product
which
has
not
been
opened,
mishandled,
or
tampered
with
in
any
way.
Always
retain
your
original
sales
receipt
as
a
proof
of
purchase.
2
GFA-7400
FEATURES
•
Precision-matched
devices
used
throughout
the
signal
path.
•
100,000
pF
of
power
supply-filter
capacitance
for
greater
reserve
capacity.
•
Independent
power
supplies
for
each
channel.
•
Fewer
gain
stages
improve
signal
reproduction
accuracy.
•
Custom
toroidal
power
transformer
provides
better
regulation
and
greater
peak
current
capability.
•
Independent
thermal-overload
and
distortion
LEDs
for
all
5
channels.
•
High
quality,
gold-plated
5-way
binding
posts.
•
High
quality,
gold-plated
RCA
jacks.
•
Large
independent
internal
heatsinks
for
greater
cooling
capability
of
output
devices.
•
Convenient
12
VDC
power
ON/OFF
triggering.
•
Heavy
gauge,
anodized
aluminum
front
panel.
•
Powder-coated,
baked
chassis
and
top
cover
for
greater
durability.
•
Cooling
vents
for
greater
efficiency
and
cooler
operation
while
driving
low
impedance
loads.
•
Made
in
the
USA
GFA-7300
FEATURES
•
Precision-matched
devices
used
throughout
the
signal
path.
•
47,000
pF
of
power
supply-filter
capacitance
for
greater
reserve
capacity.
•
Independent
power
supplies
for
each
channel.
•
Fewer
gain
stages
improve
signal
reproduction
accuracy.
•
Custom
toroidal
power
transformer
provides
better
regulation
and
greater
peak
current
capability.
•
Independent
thermal-overload
and
distortion
LEDs
for
all
5
channels.
•
High
quality,
gold
plated
binding
posts.
•
High
quality,
gold-plated
RCA
jacks.
•
Large
independent,
internal
heatsinks
for
greater
cooling
capability
of
output
devices.
•
Heavy
gauge,
anodized
aluminum
front
panel.
•
Powder-coated,
baked
chassis
and
top
cover
for
greater
durability.
.
Cooling
vents
for
greater
efficiency
and
cooler
operation
while
driving
low
impedance
loads.
3
INSTALLATION
&
HOOKUP
UNPACKING
THE
GFA-7500
and
GFA-7300
Before
your
new
ADCOM
amplifier
left
our
factory,
it
was
carefully
inspected
for
physical
imperfections
and
tested
for
all
electrical
parameters
as
a
routine
part
of
ADCOM
s
systematic
quality
control.
This,
along
with
full
operational
and
mechanical
testing,
should
ensure
a
product
flawless
in
both
appearance
and
performance.
After
you
have
unpacked
the
GFA-7400/7300,
inspect
it
for
physical
damage.
Save
the
shipping
carton
and
all
packing
material
as
they
are
intended
to
reduce
the
possibility
of
transportation
damage,
should
the
amplifier
ever
need
to
be
shipped
again.
In
the
unlikely
event
damage
has
occurred,
notify
your
dealer
immediately
and
request
the
name
of
the
carrier
so
a
written
claim
to
cover
shipping
damages
can
be
initiated.
THE
RIGHT
TO
A
CLAIM
AGAINST
A
PUBLIC
CARRIER
CAN
BE
FORFEITED
IF
THE
CARRIER
IS
NOT
NOTIFIED
PROMPTLY
IN
WRITING
AND
IF
THE
SHIPPING
CARTON
AND
PACKING
MATERIALS
ARE
NOT
AVAILABLE
FOR
INSPECTION
BY
THE
CARRIER.
SAVE
ALL
PACKING
MATERIALS
UNTIL
THE
CLAIM
HAS
BEEN
SETTLED.
PLACING
THE
GFA-7400/7300
During
normal
home
operation
the
internal
heatsinks
of
the
GFA-7400/7300
may
become
warm.
However,
there
are
instances
during
high-level
playback
into
low
impedances
when
the
heatsinks
will
become
much
warmer
than
usual.
To
ensure
the
amplifier’s
long-term,
trouble-free
operation
it
is
necessary
to
provide
adequate
ventilation
for
the
heatsinks.
Therefore,
the
GFA-
7400/7300
should
be
kept
away
from
external
sources
of
heat
such
as
radiators
and
hot-air
ducts.
The
GFA-7400/7300
should
never
be
placed
with
other
heat-producing
components
in
a
cabinet
or
enclosure
lacking
free
air
flow.
The
top
and
bottom
panel
of
the
amplifier’s
chassis
have
been
provided
with
vents
to
allow
the
necessary
cooling
of
the
internal
components.
It
is
imperative
that
these
vents
are
not
obstructed
in
any
way.
We
recommend
that
you
do
not
stack
other
components
on
top
of
the
GFA-7400/7300.
This
is
particularly
important
if
your
system
includes
low-impedance
loudspeakers
which
are
difficult
to
drive,
or
if
you
will
consistently
demand
high
volume
levels
from
the
amplifier
and
speaker
system.
Not
only
will
heat
generated
by
the
amplifier
affect
the
performance
of
equipment
stacked
on
top
of
the
GFA-7400/7300,
but
the
free
flow
of
air
through
the
ventilating
slots
in
the
amplifier
may
be
partially
obstructed.
If
you
observe
these
recommendations,
the
GFA-7400/7300
will
perform
reliably
in
any
reasonable
environment.
You
should
also
pay
attention
to
such
normal
considerations
as
protection
from
excessive
dust
and
moisture.
Occasional
vacuuming
of
accumulated
dust
on
the
chassis,
panels
and
around
the
ventilating
slots
should
be
all
that
is
required.
The
optimal
performance
of
your
new
GFA-7400/7300
will
ultimately
depend
on
the
care
with
which
you
make
the
connections
between
the
amplifier,
preamplifier,
surround
sound
decoder
and
the
loudspeakers.
All
input
and
output
signal
connections
should
be
made
only
with
high
quality,
low-loss,
low
capacitance
cables
following
the
recommendations
in
the
Inputs
and
Outputs
section
of
CONNECTING
THE
GFA-7400/7300.
4
NOTE!
Product
shown
is
for
reference
only,
The
GFA-7400
and
GFA-7300
differ
in
appearance
but
have
the
same
basic
configuration.
CONNECTING
THE
GFA-7400/7300
Remember,
that
the
Left
and
Right
designations
are
as
you
are
sitting
down
in
your
listening/viewing
area.
On
the
rear
panel,
the
inputs
and
outputs
are
grouped
in
5
bracketed
sets,
one
for
each
channel.
They
are
as
follows:
GFA-7300
GFA-7400
RR
(Right
Rear)
LR
(Left
Rear)...
FR
(Front
Right)
C
(Center).
FL
(Front
Left)...
Surround
Right
(SR)
Surround
Left
(SL)
Front
Right
(FR)
Center
(C)
Front
Left
(FL)
6
Olnputs:
Be
certain
to
connect
the
RCA
cables
to
the
proper
RCA-input
connector.
If
the
cables
are
color
coded,
then
use
this
sequence
for
the
connections:
Blue
.FL
(Front
Left)
Red
.FR
(Front
Right)
Green
.C
(Center)
White
with
Blue
Stripe
.LR
(Left
Rear)
/
(Surround
Left)
White
with
Red
Stripe
.RR
(Right
Rear)
/
(Surround
Right)
©Outputs:
NOTE:
The
GFA-7400/7300
is
“polarity
correct".
That
is
it
does
not
invert
phase
from
input
to
output.
Any
positive
signals
at
its
inputs
will
appear
as
a
positive
signal
at
its
outputs
When
connecting
the
amplifier
to
the
loudspeaker,
it
is
vital
to
maintain
proper
polarity
(positive
to
positive,
negative
to
negative).
On
the
GFA-7400/7300,
the
positive
terminal
is
color
coded
RED
and
labeled
“+”,
and
the
negative
is
color
coded
BLACK
and
labeled
The
positive
terminal
on
the
speaker
will
be
color
coded
RED,
or
will
be
labeled
“+”,
“pos”,
“positive”,
“8
ohms”,
or
“4
ohms”.
The
negative
terminal
on
the
speaker
will
be
color
coded
BLACK,
or
will
be
labeled
“-
”,
“neg”,
negative”,
“C”,
“Common”,
“G”,
or
“ground”.
It
is
recommended
that
your
speaker
cables
be
terminated
with
“U”
type
spade
connectors.
These
will
give
the
most
contact
area
insuring
long-term
reliability.
The
spade
connector
should
have
a
maximum
width
of
0.57
inches
and
7
~
(~
an
opening
width
of
no
less
than
0.25”
mm0
57
.
(see
diagram
on
right).
-J-
_c
■
)
To
properly
connect
the
speaker
cable
to
the
binding
posts,
turn
the
insulated
head
of
the
binding
post
clockwise
until
the
wire
or
connector
is
firmly
secured.
Finger
pressure
is
sufficient
and
you
should
not
use
pliers
or
other
tools
which
could
damage
or
over-tiqhten
the
binding-post
assembly
.
The
binding
posts,
have
been
designed
in
such
a
way
that
finger
pressure
is
all
that
is
required
to
cause
a
"pinching”
action
among
the
different
metal
surfaces
to
ensure
proper
connection.
It
is
very
important
to
use
the
correct
size
of
wire
in
order
to
avoid
unnecessary
loss
of
amplifier
power
in
the
cable,
reduction
of
amplifier
damping
factor
and
other
undesirable
conditions.
Sound
audio
engineering
practice
suggests
the
use
of
at
least
AWG16,
stranded,
copper
cable.
Recommended
capacitance
of
the
speaker
wire
should
not
exceed
50pF
per
foot.
This
insures
high
frequencies
will
not
be
rolled-off.
It
is
suggested
that
for
all
the
channels
follow
this
chart
for
speaker
lengths
and
wire
gauges.
up
to
24
feet...AWG16
up
to
36
feet.AWG14
up
to
58
feet.AWG12
If
longer
runs
are
needed,
it
is
best
to
consult
with
your
Adcom
Dealer
to
maximize
the
performance
of
your
system
with
your
exact
conditions.
7
All
loudspeakers
having
a
nominal
impedance
down
to
4
ohms
can
be
connected
to
and
driven
by
the
GFA-7400/7300.
The
amplifier
can
drive
these
low-impedance
speakers
at
more
than
adequate
power
levels
with
no
difficulty.
It
should
be
noted
that
many
loudspeaker
systems
which
are
nominally
rated
at
4
ohms
drop
in
impedance,
in
some
parts
of
their
frequency
range,
to
as
low
as
2
ohms
(and
sometimes
less).
You
will
not
experience
difficulties
even
with
these
very
low
impedance
loads
unless
you
demand
excessively
high
volumes
levels
from
your
system.
It
is
not
recommended
that
you
run
additional
sets
of
speakers
to
the
GFA-7400/7300.
If
you
choose
to
add
remote
speakers
in
another
room,
it
is
strongly
suggested
that
a
switching
system
to
disconnect
the
non-home-theater
speakers
be
incorporated
when
the
surround
sound
home-
theater
mode
is
in
operation.
A
device
such
as
the
Adcom
GFS-3,
GFS-4
or
GFS-6
Speaker
Selector
is
strongly
recommended.
A
Speaker
Selector
enables
you
to
maintain
good
sonic
integrity
while
giving
you
the
flexibility
to
add
speakers
throughout
your
house.
CARING
FOR
YOUR
GFA-7400/7300
Great
care
has
been
taken
by
ADCOM
to
ensure
that
your
amplifier
is
as
flawless
in
appearance
as
it
is
electronically.
The
front
panel
is
a
heavy-gauge,
high-grade
aluminum
extrusion
carefully
finished
and
anodized
for
durability.
The
chassis,
top
cover
and
rear
panel
are
heavy-gauge
steel
that
has
been
powder
coated
and
baked
to
ensure
a
lasting
finish.
If
the
front
panel,
top
or
sides
become
dusty
or
fingerprinted,
they
can
be
cleaned
with
a
soft
lint-free
cloth,
slightly
dampened
with
a
very
mild
detergent
solution
or
glass
cleaner.
DO
NOT
SPRAY
OR
POUR
LIQUIDS
OF
ANY
KIND
ON
THE
GFA-7400/7300.
8
REAR
PANEL
DESCRIPTION
OF
UNIT
NOTE!
Product
shown
is
GFA-7400,
GFA-7300
is
similar.
O
Inputs
The
audio
inputs
for
the
GFA-7400/7300
are
through
high-quality,
gold-plated
RCA
jacks
to
minimize
high-frequency
losses,
noise,
etc.
They
will
accept
standard
RCA-type
plugs,
one
for
each
of
the
five
channels;
Front
Left,
Center,
Right
Front,
Left
Rear,
and
Right
Rear.
To
insure
that
the
performance
designed
into
the
GFA-7500
is
preserved,
you
should
use
the
highest
quality
audio
cables
possible.
There
are
many
cables
which
are
color-coded
and
specifically
designed
for
this
application.
Your
Adcom
dealer
can
help
select
the
best
cable
for
your
needs.
(See
CONNECTING
THE
GFA-7400/7400
for
more
information).
0
Outputs
The
GFA-7400’s
connections
to
the
loudspeakers
are
made
through
high-grade,
5-way,
gold-plated
binding
post
terminals.
There
are
two
terminals
for
each
speaker,
which
are
colored
RED
for
the
positive
(+)
output
and
BLACK
for
the
negative
(-)
output.
The
GFA-7300’s
connections
to
the
loudspeakers
are
basically
similar;
there
are
two
terminals
for
each
speaker,
which
are
colored
RED
for
the
positive
(+)
output
and
BLACK
for
the
negative
(-)
output.
The
high-grade
gold-plated
binding
post
terminals
on
the
GFA-7300
are
however,
different.
These
connectors
easily
accept
stripped
bare
wires
or
pins.
To
use
spade
lugs
it
is
necessary
to
remove
the
black
molded
plastic
guide
block
that
fits
over
the
binding
posts.
To
remove,
take
out
the
two
screws
at
the
top
and
bottom
of
guide
block.
Store
the
guide
block
and
screws
for
future
use.
The
binding
posts
will
accept
a
variety
of
connector
types;
the
most
secure
and
prevalent
of
these
is
the
“U”-type
spade
connectors
(at
least
0.25"
wide
and
maximum
width
of
0.57”),.
The
terminal
will
also
accept
bare
wire
(up
to
AWG10)
and
“banana”
type
plugs
(single
or
dual).
(See
CONNECTING
THE
GFA-7400/7300
for
more
information).
9
©
12VDC
Triggering.
(GFA-7400
Only)
The
GFA-7400
and
GFA-7300
are
very
high
power
amplifiers
and
as
such
must
be
directly
connected
to
the
wall
outlet
or
an
appropriate
surge
protector
or
AC
line
conditioner.
It
must
never
be
connected
to
the
“switched”
outlets
on
the
rear
panel
of
a
pre-amplifier.
Usually
this
would
mean
that
when
you
turn
on/off
your
pre-amplifier
you
would
have
to
turn
on/off
your
power
amplifier
separately.
We
have
however
provided
the
ability
to
control
the
OFF/ON
function
of
the
GFA-7400
by
a
12Volt
DC
output
jack
on
the
rear
of
certain
ADCOM
pre-amplifiers
and
tuner
pre¬
amplifiers.
When
using
this
feature
the
front
panel
Power
Switch
must
be
left
in
the
in
“on”
position.
To
connect
you
will
need
a
monaural
mini
phone
plug
to
monaural
mini
phone
plug
cable
of
appropriate
length
(not
included)
to
reach
from
the
rear
panel
of
the
amplifier
to
the
rear
panel
of
the
pre-amplifier.
Contact
your
dealer
for
information
on
using
this
feature
with
ADCOM
and
other
brand
pre-amplifiers.
Although
12VDC
is
optimal
the
circuit
will
operate
from
approx.
5
to
30VDC,
not
to
exceed
250mv.
Center
conductor
(tip)
is
positive
(+).
O
AC
Fuse
The
AC
Fuse
protects
the
electronic
circuits
of
the
GFA-7400/7300.
This
fuse,
normally,
will
fail
only
if
there
is
an
overload
within
the
GFA-7400/7300.
It
may,
however,
fail
if
the
amplifier
attempts
to
deliver
very
high
power
into
very
low-impedance
loudspeakers.
In
either
case,
BE
SURE
TO
REPLACE
THE
AC
Fuse
ONLY
WITH
AN
EXACT
REPLACEMENT
FUSE.
The
proper
fuse
values
are:
GFA-7400:
Fuse
Rating
BUSS®
Littelfuse®
For
115
volt
operation.15
Amp
250
Volt.ABC-15/250V.(3AB)
314015/250V
For
230
volt
operation.
8
Amp
250
Volt.AGC-8/250V.(3AG)
312008/250V
GFA-7300:
Fuse
Rating
BUSS®
Littelfuse®
For
115
volt
operation.T8
Amp
250
Volt.MDL-8A/250V.(3AG)
313008/250V
For
230
volt
operation.T4
Amp
250
Volt.MDL-4A/250V.(3AG)
313004/250V
WARNING
Before
attempting
to
replace
a
failed
fuse,
be
certain
to
unplug
the
AC
Power
Cord
from
the
AC
wall
outlet
to
prevent
possible
electrical
shock.
Replace
the
AC
Fuse
only
with
one
identical
in
type
and
rating
as
printed
on
the
rear
panel.
DO
NOT
USE
ANY
SUBSTITUTE
FUSES
WITH
DIFFERENT
RATINGS
OR
VALUES.
Failure
to
observe
this
precaution
may
cause
serious
damage
to
the
amplifier
circuits,
MAY
CREATE
A
FIRE
HAZARD,
AND
MAY
VOID
THE
WARRANTY._
If
the
Power
LED
(©)
does
not
glow,
it
may
be
an
indication
that
the
AC
fuse
has
blown.
If
you
are
using
the
12VDC
Triggering
feature
(GFA-7400
Only)
it
may
be
possible
that
there
is
a
problem
with
that
connection.
To
determine
if
the
problem
is
caused
by
a
malfunction
in
the
12VDC
system,
remove
the
small
plug
inserted
into
the
12VDC
Triggering
jack.
Press
the
front
panel
power
switch
to
turn
off
the
amp,
and
immediately
re-press
the
power
switch.
If
the
problem
is
caused
by
the
12VDC
triggering
circuit
the
amp
will
turn
on
and
the
LED
will
glow.
DO
NOT
attempt
repair
of
the
12VDC
system.
If
you
are
not
sure,
or
the
amplifier
displays
other
symptoms,
please
consult
the
RESOLVING
PROBLEMS
section
on
page
13.
10
Fuse
replacement
GFA-7400:
To
remove
the
fuse-holder
cap,
you
will
need
a
%”
standard
flat-blade
screwdriver.
Place
the
screwdriver
in
the
recessed
slot
in
the
cap.
Turn
the
cap
Vs-turn
counter-clockwise,
until
the
cap
pops
out
towards
you.
Grasp
the
cap
with
your
fingers
and
pull
it
completely
out.
The
fuse
is
inserted
in
the
back
of
the
cap;
gently
pull
it
free.
Since
the
fuse
has
a
ceramic
body,
you
cannot
visually
examine
the
fuse
element,
it
is
therefore
suggested
that
you
replace
it
with
an
identical
substitute
or
bring
the
fuse
to
your
Adcom
dealer
so
they
may
check
its
integrity.
To
replace
the
fuse,
insert
it
in
the
back
of
the
fuse-holder
cap.
Place
the
cap
into
the
fuse-holder.
Place
the
screwdriver
in
the
recessed
slot,
gently
press
in
and
turn
V8-tum
clockwise.
Fuse
replacement
GFA-7300:
To
remove
the
fuse-holder
cap,
you
will
need
a
#2
Philips
type
screwdriver.
Place
the
screwdriver
in
the
recessed
slot
in
the
cap.
Turn
the
cap
counter-clockwise,
until
the
cap
pops
out
towards
you.
Grasp
the
cap
with
your
fingers
and
pull
it
completely
out.
The
fuse
is
inserted
in
the
back
of
the
cap;
gently
pull
it
free.
Replace
it
with
an
identical
substitute
or
bring
the
fuse
to
your
Adcom
dealer
so
they
may
check
its
integrity.
To
replace
the
fuse,
insert
it
in
the
back
of
the
fuse-holder
cap.
Place
the
cap
into
the
fuse-holder..
Place
the
screwdriver
in
the
recessed
slot,
gently
press
in
and
turn
clockwise
until
fully
inserted,
being
careful
not
to
over-tighten.
e
AC
Power
Cord
The
AC
cord
provides
power
to
operate
all
the
GFA-7400
and
7300’s
circuits.
Its
plug
can
be
connected
to
a
standard
wall
outlet
provided
the
outlet
supplies
a
voltage
compatible
with
the
power
requirements
printed
on
the
rear
panel
of
the
GFA-7400/7300.
The
GFA-7400
and
7300’s
power
cord
is
supplied
with
a
“polarized”
AC
plug
as
required
by
UL/CSA
standards
and
the
National
Electrical
Code.
To
minimize
the
risk
of
electrical
shock
and
to
insure
minimal
hum
from
the
system,
do
not
defeat
the
polarity
insuring
feature
of
the
plug
(one
wide
blade
and
one
narrow
blade).
To
prevent
electrical
shock,
do
not
use
this
polarized
plug
with
an
extension
cord
or
AC
outlet
unless
the
blades
can
be
fully
inserted
to
prevent
blade
exposure.
11
FRONT
PANEL
NOTE!
Product
shown
is
the
GFA-7400.
The
GFA-7300
is
similar
in
appearance.
0
On/Off
Switch
74nn^n?
n
S5
S
WitC
^
0r
ll
r0lS
power
to
the
Power
transformer
and
circuits
of
the
GFA-
the
rFA°
74
n
n
/
7
^nn
Ver
^
GFA
'
7400/7300
is
energized
the
Power
LED
(©)
will
glow.
To
turn
the
GFA
-
74
°
0
/
7300
on,
press
the
push-button.
It
will
remain
in
the
“engaged”
position
while
the
move
T
°
tU
H
-
the
GFA
"
7
400/7300
off
-
P
re
s
s
the
push-button
in
and
release
and
it
will
move
to
the
disengaged
position.
0
Power
LED
This
LED
will
glow
whenever
the
On/Off
Switch
(®)
is
turned
on
and
the
GFA-7400/7300
is
TntTnnt
*
ft
m(i
^
es
that
there
is
AC
volta
9
e
being
fed
to
the
amplifier,
but
it
does
not
signify
that
all
the
amplifier
s
circuits
are
in
operation.
If,
for
example,
one
of
the
Thermal
Protection
LED
(©)
glows,
that
amplifier
channel
will
not
produce
sound
even
though
the
Power
LED
may
still
glow.
When
the
GFA-7400/7300
is
turned
off,
the
Power
LED
will
take
some
time
to
fade
out
completely.
It
may
take
up
to
30
seconds
to
fully
extinguish.
Additionally,
the
internal
power
transformer
is
provided
with
a
thermostat
which
will
interrupt
power
into
the
transformer
if
its
temperature
exceeds
125°C.
This
high
temperature
will
seldom
if
ever
be
encountered
unless
the
amplifier
is
subjected
to
abnormal
conditions,
such
as
operation
into
loads
of
less
than
3
ohms
at
very
high
listening
levels,
etc.
If
the
AC
Fuse
(©)
has
not
failed
I!
“£>
is
°
U
t
’
a
n
?
th
©
Thermal
Protection
LED
(©)
does
not
glow,
this
would
indicate
that
the
thermostat
within
the
transformer
has
opened.
Once
the
temperature
within
the
transformer
decreases
to
a
normal
level,
the
thermostat
will
reset
itself
automatically
and
normal
operation
will
resume.
If
you
are
to
avoid
tripping
the
thermostat
in
the
transformer
continually,
you
must
reduce
the
sound
level
demands
correct
the
load
impedance
of
the
loudspeakers,
or
both.
12
O
Thermal
Protection
LEDs
The
GFA-7400/7300
are
provided
with
a
thermal
protection
circuit
which
will
shut
down
the
individual
amplifiers
if
its
heatsink
temperature
reaches
85°C.
The
Thermal
Protection
LEDs
will
light
whenever
the
thermal
protection
circuit
in
its
respective
channel
has
been
triggered
and
the
amplifier
is
inoperative.
The
thermal
protection
circuitry
will
typically
be
triggered
by
very
high
power
demands
into
impedances
much
lower
than
the
amplifier
is
capable
of
driving
at
those
levels.
If
any
amplifier
channel’s
output
through
the
loudspeakers)
ceases
abruptly,
and
its
Thermal
Protection
LED
glows,
you
will
know
that
its
heatsink
temperature
has
become
unacceptably
high
and
the
circuitry
is
protecting
the
amplification
devices.
Please
note
that
the
Power
LED
(•)
will
remain
on
and
the
amplifier
will
still
be
energized.
Once
the
temperature
of
the
heatsink(s)
drops
to
a
safe
operating
level,
that
amplifier
will
automatically
resume
operation.
Activation
of
the
Thermal
Protection
circuitry
in
any
of
the
amplifiers
in
the
GFA-7400/7300
is
an
indication
that
the
amplifier
has
been
overdriven
or
that
the
load
the
loudspeakers
are
presenting
to
the
amplifier
is
unreasonably
low.
If
you
wish
to
prevent
recurrent
activation
of
the
thermal
protection
circuitry,
you
must
reduce
the
volume-level
demands
or
correct
the
load-
impedance
condition
which
may
be
causing
activation
of
this
circuitry.
O
Distortion
Alert
LEDs
The
Distortion
Alert
circuit
is
a
unique
ADCOM
distortion
detection
system
which
reads
all
forms
of
non-linear
distortion
such
asTHD,
IM,
slew-induced,
"clipping”,
etc.
The
Distortion
Alert
LEDs
will
light
when
distortion
reaches
approximately
1%
regardless
of
impedance,
voltage/current
phase
angle
or
the
reactance
of
the
loudspeakers
which
the
amplifier
is
driving.
Sometimes,
when
the
amplifier
is
in
use,
the
LEDs
may
occasionally
flicker
during
high
volume
listening,
particularly
if
you
are
driving
low
impedances.
This
flickering
is
no
cause
for
concern.
The
LEDs
are
simply
warning
you
that
the
amplifier
is
approaching
its
maximum
power
output
into
the
particular
loudspeakers
you
are
using.
If,
however,
the
Distortion
Alert
LEDs
glow
brightly
or
are
illuminated
most
of
the
time
during
playback,
you
are
overdriving
the
amplifier
and
should
turn
down
your
volume
control
to
reduce
the
listening
level,
otherwise
it
may
cause
the
Thermal
Protection
to
be
activated
or,
in
extreme
cases,
damage
your
loudspeakers.
13
TROUBLESHOOTING
RESOLVING
PROBLEMS
Use
the
chart
below
to
solve
common
situations
that
don’t
require
professional
attention.
If
the
steps
stated
in
POSSIBLE
SOLUTION
do
not
resolve
your
problem,
then
please
contact
your
Adcom
Dealer
or
call
the
Adcom
Customer
Service
Department.
Any
problems
not
covered
here
should
be
brought
to
the
attention
of
your
Adcom
Dealer
or
Adcom
Customer
Service
Department.
SYMPTOM
|
|
POSSIBLE
REASON
\
|
POSSIBLE
SOLUTION
Power
LED
does
not
AC
Power
Cord(O)
not
plugged
in.
Plug
in
AC
Power
Cord(0)
glow.
No
sound
AC
Fuse(0)failed.
Replace
AC
Fuse(O).
Transformer
thermal
protection
engaged
Wait
until
unit
cools
down,
it
will
reset.
12VDC
triggering
malfunctioning
(GFA-7400
Only)
Reset
power
switch
manually
Check
connection
of
12VDC
trigger
at
source
Power
LED
glows,
Preamp
or
source
unit
is
not
on.
Make
sure
whole
system
is
on.
but
no
sound
Connections
in
rear
of
amp
are
loose.
Verify
all
connections
on
rear
of
amp
One
channel
not
producing
sound
INPUT(O)
orOUTPUT(O)
connector
disconnected
or
loose.
Verify
both
connections
on
that
channel
Speaker
disconnected.
Verify
connection
at
speaker.
Internal
protection
engaged
Bring
to
Dealer
or
Service
Center
Hum
from
all
speakers
at
any
volume
Ground
loop
(difference
in
ground
voltages
between
components).
If
Cable
TV
is
present
(see
Note
1).
If
Cable
TV
is
not
present
(see
Note
2).
Hum
from
all
speakers
(hum
goes
up
or
down
with
volume).
Problem
with
source
unit
(CD,
tape,
etc.),
or
RCA
cable
connecting
that
source
unit
to
the
preamp.
Try
different
source
(tuner,
tape,
etc.)
and/or
different
RCA
cable
Hum
from
the
amplifier
itself
Some
major
appliance,
dimmer,
halogen
or
fluorescent
light
is
creating
interference.
Make
sure
all
appliances,
dimmers
and
suspect
lights
are
off.
A
special
note
on
“hum”
:
When
there
is
a
low-volume
“hum”
audible
throughout
your
speakers,
even
with
the
main
volume
turned
all
the
way
down,
you
have
a
common
phenomenon
known
as
a
“ground
loop”.
A
ground
loop
is
basically
a
difference
in
ground
voltages
between
two
or
more
components
which
are
connected
electrically
and
which
creates
multiple
current
paths
where
there
must
only
be
one.
This
difference
in
potentials
creates
a
60Hz
low-level
sound
(approximately
a
low
A
#
)
,
that
seems
to
“hum”,
hence
the
name.'
It
can
be
caused
by
adding
new
components
to
your
system,
but
that
does
not
imply
there
is
anything
electrically
wrong
with
any
new
component.
With
the
advent
of
audio/video
and
home
theater
systems,
the
problem
has
become
commonplace.
Generally,
the
cause
is
the
Cable-TV
incoming
signal
line.
This
new
incoming
line
may
add
an
additional
ground
at
a
different
potential
to
the
AC
line
ground
of
your
other
equipment
(refer
to
Note
1
and
2
on
next
page,
to
troubleshoot
a
hum
problem).
14
/Vote
t
:
Cable
TV
systems
can
sometimes
contribute
to
ground
loop
problems
which
cause
“hum”.
To
determine
if
your
cable
system
is
the
contributing
factor,
disconnect
the
Cable-TV
incoming
signal
line
(round,
75Q)
at
the
wall,
or
the
first
component
the
cable
is
connected
to
(i.e.
the
cable
box,
or
VCR).
If
the
hum
is
no
longer
present,
you
must
insert
a
“750
Ground
Loop
Isolator”
before
reconnecting
the
line.
You
should
check
with
your
Adcom
Dealer
to
obtain
one.
If
the
“750
Ground
Loop
Isolator”
works
only
partially
or
not
at
all,
then
please
read
Note
2
to
complete
the
troubleshooting
procedure.
/Vote
2
:
Make
sure
that
the
power
amplifier
is
at
least
6”
from
the
Preamp
and/or
Processor.
Usually
putting
another
component
between
them
is
sufficient
to
minimize
the
hum.
If
this
does
not
reduce
the
hum,
turn
the
system
off
and
disconnect
all
Inputs
from
the
amplifier.
If
the
hum
still
persists,
then
your
Dealer
or
Service
Center
must
examine
the
amplifier.
If
the
hum
disappears,
try
another
set
of
RCA
cables.
Connect
one
RCA
cable
at
a
time
to
see
if
one
specific
cable
is
responsible.
If
any
or
all
cables
cause
the
hum
to
appear,
then
the
preamp
or
processor
should
be
evaluated
for
proper
operation
by
your
Dealer
or
Authorized
Service
Center.
15
SERVICING
ADCOM
has
a
Technical
Service
Department
to
answer
questions
pertinent
to
the
installation
and
operation
of
your
unit.
In
the
event
of
difficulty,
please
contact
us
for
prompt
advice.
Please
have
the
following
information
readily
at
hand:
the
unit’s
model
and
serial
numbers,
and
dealer
from
which
it
was
bought.
If
your
problem
cannot
be
resolved
through
our
combined
efforts,
we
may
refer
you
to
an
authorized
repair
agency,
or
authorize
return
of
the
unit
to
our
factory.
To
aid
us
in
directing
you
to
a
convenient
service
center,
it
would
be
helpful
if
you
indicate
which
major
city
is
accessible
to
your
home.
Please
address
mail
inquiries
to:
ADCOM
Service
Corporation
11
Elkins
Road
East
Brunswick,
NJ
08816
Phone,
Fax
or
E-mail
inquiries
to:
Voice:
732-390-1130
Fax:
732-390-5657
Monday
through
Friday
9:00AM
to
5:00PM
EST
E-mail:
New
Location
and
Telephone
Numbers
as
of
Spring
1998
ADCOM
Service
Corporation
Voice:
732-683-2356
10
Timber
Lane
Fax:
732-683-2358
Marlboro,
NJ
07746
USA
UNDER
NO
CIRCUMSTANCES
SHOULD
YOUR
UNIT
BE
SHIPPED
TO
OUR
FACTORY
WITHOUT
PRIOR
AUTHORIZATION,
OR
PACKED
IN
OTHER
THAN
ITS
ORIGINAL
CARTON
AND
FILLERS.
For
fax
inquires,
please
include
a
return
fax
or
voice
number
for
the
reply.
When
calling
or
writing
about
your
GFA-7400/7300,
be
sure
to
note
and
refer
to
its
serial
number
as
well
as
the
date
of
purchase
and
the
dealer
from
whom
it
was
purchased.
In
the
event
the
unit
must
be
returned
to
our
factory
for
service,
you
will
be
instructed
on
the
proper
procedure
when
you
call
or
write
for
a
Return
Authorization.
For
warranty
coverage,
a
copy
of
the
original
proof
of
purchase
is
required.
If
you
have
no
original
copy,
please
contact
your
dealer
to
obtain
a
duplicate
copy.
If
the
original
shipping
carton
and
its
fillers
have
been
lost,
discarded,
or
damaged,
a
duplicate
carton
may
be
obtained
from
our
Service
Department
for
a
nominal
charge.
Always
Ship
PREPAID
VIA
UNITED
PARCEL
SERVICE
(UPS)
OR
OTHER
APPROVED
CARRIER.
DO
NOT
SHIP
VIA
PARCEL
POST,
since
the
packing
was
not
designed
to
withstand
rough
Parcel
Post
handling.
FREIGHT
COLLECT
SHIPMENTS
CAN
NOT
BE
ACCEPTED
UNDER
ANY
CIRCUMSTANCES.
16
GFA-7400
SPECIFICATIONS
Power
Rating
(To
FTC
Requirements)
100
watts
continuous
average
power
into
8
ohms
at
any
frequency
between
20Hz
to
20kHz
with
all
channels
driven
at
less
than
0.075%
THD
150
watts
continuous
average
power
into
4
ohms
at
any
frequency
between
20Hz
to
20kHz
with
all
channels
driven
at
less
than
0.075%
THD
IM
Distortion
(SMPTE)
1
watt
to
100
watts
into
8
ohms.
<
0
075%
1
watt
to
150
watts
into
4
ohms.
<
0.075%
IM
Distortion
(COIF,
Any
Combination
from
4kHz
to
20kHz)
100
watts
into
8
ohms.
£
0.025%
150
watts
into
4
ohms..^
0.025%
THD
+
Noise
at
100
watts
into
8
ohms
(Typical)
20Hz.
0.012%
1kHz....
0.012%
10kHz.
0.02%
20kHz.
0.025%
THD
+
Noise
at
150
watts
into
4
ohms
(Typical)
20Hz...
0
025%
1kHz.......
0
025%
10kHz.....
0
035%
20kHz.
0.045%
Frequency
Response
@
1
Watt
into
8
ohms
(10Hz
to
20kHz).+0,
-0.25dB
Power
Bandwidth
(-3dB).....1
5Hz
to
65kHz
Dynamic
Headroom
into
4
ohms.2.5
dB
Signal
to
Noise
Ratio,
“A”
Weighted
(100
watts
into
8
ohms).>
110dB
Gain.
2
9dB
Input
Sensitivity
fori
Watt.....0.1
volts
for
100
Watts.....1.0
volts
input
Impedance..........
.
5
0
kQ
Damping
Factor
(20Hz
to
20kHz)
.
.
.
~
400
Rise
Time
(5kHz,
80V,
peak-to-peak
square
wave,
20%
to
80%).
4
.
5
p
S
Power
Consumption
(Continuous,
All
Channels
Driven)
Quiescent........
Maximum.
100
watts
into
8
ohms.
Power
(Available
in
230VAC
on
special
order).
Chassis
Dimensions.
Maximum
Dimensions...
Weight.......
Weight,
Packed.
All
specifications
are
subject
to
change
or
improvement
without
product
may
vary
slightly.
...
96VA
.
1440VA
...
1165V
A
.
115VAC
-
50/60Hz
.
5”
(127mm)
x
17”
(432mm)
x
14”
(355.6mm)
.5%"
(146mm)
x
17”
(432mm)
x
15”
(381mm)
......
42
lb.
(19.1
kg)
..
48
lb.
(22.8
kg)
notice.
Dimensions
and
weights
listed
are
approximate,
actual
17
GFA-7300
SPECIFICATIONS
Power
Rating
(To
FTC
Requirements)
60
watts
continuous
average
power
into
8
ohms
at
any
frequency
between
20Hz
to
20kHz
with
all
channels
driven
at
less
than
0.075%
THD
90
watts
continuous
average
power
into
4
ohms
at
any
frequency
between
20Hz
to
20kHz
with
all
channels
driven
at
less
than
0.075%
THD
IM
Distortion
(SMPTE)
1
watt
to
60
watts
into
8
ohms.
1
watt
to
90
watts
into
4
ohms.
IM
Distortion
(CCIF,
Any
Combination
from
4kHz
to
20kHz)
60
watts
into
8
ohms.
90
watts
into
4
ohms.
.
<
0
07%
.
<
0.07%
<
0
025%
<
0.025%
THD
+
Noise
at
60
watts
into
8
ohms
(Typical)
20Hz.
1kHz.
10kHz.
20kHz.
0.0075%
.
0.007%
0.015%
0
025%
THD
+
Noise
at
90
watts
into
4
ohms
(Typical)
20Hz.
1kHz.
10kHz.
20kHz.
0.015%
0.010%
0
022
%
0
035%
Frequency
Response
@
1
Watt
into
8
ohms
(10Hz
to
20kHz)
+0,
-0
25dB
Power
Bandwidth
(-3dB)
1.5Hz
to
100kHz
Dynamic
Headroom
into
4
ohms.
Signal
to
Noise
Ratio,
“A"
Weighted
(60
watts
into
8
ohms)
Gain.
.
1.9
dB
>115dB
29dB
Input
Sensitivity
for
1
Watt.
for
60
Watts.
.
0
1
volts
1.14
volts
Input
Impedance
50kQ
Damping
Factor
(20Hz
to
20kHz)
>800
Rise
Time
(5kHz,
90V,
peak>to-peak
square
wave,
20%
to
80%)
2
7|iS
Power
Consumption
(Continuous,
All
Channels
Driven)
Quiescent.
Maximum.
60
watts
into
8
ohms.
Power
(Available
in
230VAC
on
special
order).
Chassis
Dimensions.
Maximum
Dimensions...
Weight.
Weight,
Packed.
All
specifications
are
subject
to
change
or
improvement
without
product
may
vary
slightly.
.
80VA
.
960VA
.
840V
A
.
115VAC
-
50/60
Hz
.4V
4
”
(118mm)
x
17”
(432mm)
x
14”
(355
6mm)
.5”
(127mm)
x
17"
(432mm)
x
14%”
(375mm)
.
351b.
(15
9
kg)
.
40
lb.
(18.2
kg)
notice.
Dimensions
and
weights
listed
are
approximate,
actual
18
/DCOM
'
11
Elkins
Road
East
Brunswick,
NJ
08816
USA
Tel:
732-390-1130
Fax:
732-390-5657
Web:
http://www.adcom.com
New
Location
and
Telephone
Numbers
as
of
Spring
1998
jJDCOM
10
Timber
Lane
Marlboro,
NJ
07746
USA
Tel:
732-683-2356
Fax:
732-683-2358
98KFTD01
PRINTED
IN
THE
USA
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