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BEFORE
PROCEEDING
WITH
COMPLETE UNPACKING
AND
SETUP,
CONSULT UNPACKING
AND
INSPECTION INSTRUCTIONS ON
PAGE
4
model 1122
STEREO
TRANSCRIPTION PREAMPLIFIER
United Recording Electronics Industries
8460
SAN
FERNANDO
ROAD,
SUN
VALLEY,
CALIF"ORNiA
91352
(213)
767-1000
Printed
in U.S.A.
©
Copyright
1978,
UREI
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TABLE
OF
CONTENTS
SECTION
I.
INTRODUCTION
1.1
DESCRIPTION
1.2
TECHNICAL SPECIFICATIONS
1.3
CONTROLS
1.4
CONNECTIONS
SECTION
II.
INSPECTION
AND
INSTALLATION
2.1
UNPACKING
AND
INSPECTION
2.2
ENVIRONMENTAL
CONSIDERATIONS
2.3
POWERING
2.4
EXTERNAL
CONNECTIONS
SECTION
III.
OPERATING INSTRUCTIONS
3.1
GENERAL
3.2
FREQUENCY
RESPONSE CHARACTERISTICS
SECTION
IV.
MAINTENANCE
4.1
GENERAL
4.2
REPAIRS
AND
WARRANTY
SECTION
V.
APPENDIX
FIGURE
5.
PLOTTED
GRAPH
FIGURE
6.
SCHEMATIC
DIAGRAM
OF
URE!
MODEL
1122
PAGE
1
2
3
3
4
4
4
5
7
7
8
8
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M@o
A
-
,•
)
©
lfVl:
l
SECTION I
INTRODUCTION
model
1122
TRANSCRIPTION
PREAMPLIFIER
B
PO
WtR
®
)
0
l
f\/lt
, \
C}d
Figure
1.
Model
1122
Front
Panel
1.1
DESCRIPTION
The
1122
is
a
two-channel,
solid-state,
equalized
preamplifier/
line
amplifier
desi
g
ned
to
provide
the
highest
quality
disc
reprod-
uction
for
broadcast
and
recording
applications.
While
primarily
intended
for
stereo
use,
it
may
be
utilized
very
effectivedly
for
two
separate
monophonic
channels.
Any
magnetic
pickup
designed
for
operation
with
a
47,000
ohm
termination
may
be
used
with
the
Model
1122,
and
its
wide
dynamic
range
provides
faithful
reproduction
from
low
level
classical
recordings
or
maximum
excursion
single
records.
Outputs
are
balanced
for
600-ohm
or
150-ohm
lines
(approximately
80
ohms
actual).
Installation
is
simple,
and
with
standard
grounding
practices
the
1122
is
exceptionally
immune
to
rf
interference.
High
frequ
e
ncy
and
low
frequency
trimmers
are
provided
for
each
channel,
to
allow
balancing
the
response
of
a
stereo
cartridge
or of
two
monophonic
cartridges
.
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1.2
TECHNICAL
SPECIFICTIO
t S
ELECTRICAL
PHYSICAL
FREQUENCY
R
ES
PONSE: RIAA/NAB
disc
playback
character-
istic
within
±1
dB
from
30
Hz
to
15
kHz;
(NAB
1964
Disc
Standard,
recommended
low
frequency
roll-off
6
dB/octave,
3 dB
down
at
20
Hz).
INPUT IMPE
DA
NCE:
47,000
ohms.
GAIN:
DISTORTION:
HUH
AND
NOISE:
OUTPUT:
OUTPUT
IMPEDANCE:
CHANNEL
SEPARATION:
ENVIRONMENT:
PO
WE
R REQUIREMENTS:
D
IM
E
NS
ION
S:
FI
NISH :
-2-
54
dB,
continuously
variable.
Less
than
0.5%
THD
at
+20
dBm,
from
30
Hz
to
20
kHz.
At
least
60
dB
below
+6
dBm
output,
(gain
set
for
+6
dBm
output
,
with
5
rnV
input,
32
Hz
to
18
kHz
band-
pass
filter).
Floating,
transformer
isolated
.
For
600
or
150
ohm
balanced
line
(aproximately
80
ohm
actual)
.
50
dB
minimum
at
10
kHz,
50
dB
minimum
at
l kHz ,
42
dB
minimum
at
100
Hz
.
Operating
within
0.5
dB
of
all
speci
f
ications
from
-5°C
to
+55°C
(23°F
to
131°F).
100
-
125
VAC
or
2
00
-
250
VAC,strappable,
50/60
Hz,
less
than
10
W.
195
x
95.3
mm
rack
panel;
depth
be
hind
p
anel
232
mm;
(7-11/16
X
3-3/4
X
9-1/8").
Pa ne l
is
3.18
mm
(1/8")
brushed
bl
ack
anodized
aluminum.
Chassis
is
cadmium
plated
steel.
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WEIGHT:
SHIPPING
~,EIGHT:
1.3
CONTROLS
CHANNEL
LEVEL:
RESPONSE
TRI
M
MERS
:
1.4
CONNECTIONS
INPUT:
OUTPUT:
2.67
kg
(5
lb.,
14
oz.).
3 .
18
kg ( 7 1
b.
) .
Located
on
the
front
panel
and
marked
"A
Level"
and
"B
Level".
Used
to
adjust
the
overall
opera-
ting
level
and
to
balance
the
individual
levels
of
the
two
channels.
Located
inside
the
unit
on
the
PC-
board.
Used
to
balance
the
re-
sponse
of
the
two
channels
of
a
stereo
cartridge,
or
of
two
mono-
phonic
cartridges.
High
and
low
frequency
response
trimmers
are
provided
for
each
channel.
R
CA-type
jacks
on
the
rear
panel
.
Barrier
strip
terminal
on
the
rear
panel
.
(See
installation
instruc-
tions,
Section
II,
Figures
2 &
3.)
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SECTION
II
INSPECTION
AND
INSTALLATION
2.1
UNPACKING
AND
INSPECTION
The
Model
1122
was
carefully
packed
at
the
factory,
and
the
container
was
designed
to
protect
the
unit
from
rough
handling.
Nevertheless,
we
recommend
careful
examination
of
the
shipping
carton
and
its
contents
for
any
sign
of
physical
damage
which
could
have
occurred
in
transit.
If
damage
is
evident,
do
not
destroy
any
of
the
packing
mater-
ial
or
the
carton,
and
immediately
notify
the
carrier
of
a
possible
claim
for
damage.
Shipping
claims
must
be
made
by
the
consignee.
The
shipment
should
include:
Model
1122
Stereo
Transcription
Preamplifier
UREI
Instruction
t
anual
Two-part
Warranty
Card
bearing
the
same
serial
number
as
the
Model
1122.
2.2
ENVIRONMENTAL
CONSIDERATIONS
The
system
will
operate
satisfactorily
over
a
range
of
ambient
temperatures
from
-5°C
to
+55°C
(+23°F
to
131°F),
and
up
to
80%
relative
humidity.
If
the
system
is
installed
in
an
equipment
rack
together
with
high
heat
producing
equipment
(such
as
power
amplifiers),
adequate
ventilation
should
be
provided
to
prolong
the
life
of
components.
Also,
while
circuitry
susceptible
to
hum
pick-up
is
sufficiently
shielded
from
moderate
electromagnetic
fields
,
installation
should
be
planned
to
avoid
mounting
the
system
immediately
adjacent
to
large
power
transformers,
motors,
etc.
2.3
POWERING
Unless
a
tag
on
the
line
cord
specifies
otherwise,
the
Model
1122
was
shipped
ready
for
operation
with
nominal
115
VAC
power
mains.
In
order
to
change
this
for
nominal
230
VAC,
(50
or
60
Hz) ,
the
strapping
on
the
power
transformer
must
be
changed.
Remove
the
jumpers
between
terminals
1
and
3,
and
also
between
terminals
2
and
4.
Instead,
add
a
jumper
from
terminal
2
to
3.
Be
sure
to
change
the
fuse
to
the
correct
value:
1/8
A
slo-blo
when
changing
to
230
V
operation,
or
1/4
A
slo-blo
for
115
V
operation.
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2.4
EXTERNAL
CONNECTIONS
2.4.1
INPUT
CONNECTIONS
Input
connections
are
made
to
the
1122
through
two
"RCA"
type
standard
phone
jacks
on
the
rear
chassis,
marked
"A"
and
"B".
Most
phone
pickup
arms
are
equipped
with
shielded
cables
terminating
in
plugs
which
will
directly
mate
with
the
1122
jacks.
The
Model
1122
must
be
physically
located
to
allow
direct
connection
via
these
short
cables,
as
any
attempt
to
extend
them
with
additional
cable
or
extension
cables
will
result
in
loss
of
high
frequencies
due
to
the
added
shunt
capacitance.
2.4.2
OUTPUT
CONNECTIONS
Permanent
output
signal
wires
should
be
shielded
cable,
and
connected
in
accordance
with
standard
wiring
practice,
as
indicated
on
the
rear
panel
barrier
strip.
If
the
Hodel
1122
output
is
connected
to
a
high
impedance
circuit,
we
recommended
shunting
the"
±"
and
"COM"
output
ter-
minal
s
with
620
ohm,
1/2
watt
resistors.
This
assures
optimum
loading
for
the
Model
1122.
(Illustrations
on
next
page)
-5-
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SECTION
III
OPERATING INSTRUCTIONS
3 . 1
GENERAL
After
the
Preamplifier
has
been
installed
and
is
connected
to
both
the
signal
source
and
the
succeeding
equipment
according
to
Section
II
,
power
may
be
turned
ON.
The
output
level
may
be
adjusted
individually
for
each
channel
by
the
recessed,
screwdriver
operated
controls
on
the
front
panel.
3 . 2
FREQUENCY
RESPONSE
CHARACTERISTICS
Initially
,
the
frequency
response
was
adjusted
at
the
factory
to
conform
with
standard
RIAA/NAB
characteristics.
B
oth
low
and
high
frequency
response
may
be
changed
within
an
envelope
shown
in
the
graph
,
Figure
5
(Appendix).
The
frequency
adjustments
are
·
located
on
the
printed
circuit
board
and
are
accessible
after
the
cover
has
been
removed
from
the
M
odel
1122
. (
See
Figure
4 . )
Figure
4 .
Response
Tri
mm
ers
(Top
Vi
a~
).
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SECTION
IV
t-iAINTENANCE
4.1
GENERAL
The ~
odel
1122
is
an
all
solid-state
unit,
ruggedly
construc-
ted
with
only
the
highest
quality
components.
As
such,
it
should
provide
years
of
trouble
free
use
with
normal
care.
All
parts
usea
are
conservatively
rated
for
their
application,
and
workmansnip
meets
the
rigid
standards
you
nave
learned
to
expect
in
ORE!
products.
NO
SPECIAL
PREV
E
NTIVE
t1AINTE
IJAN
CE
IS
REQiJ
IRED.
4.2
REPAIRS
AND
WARRANTY
The
rtodel
1122
is
factory
warranted
to
the
orignal
purchaser
against
defects
in
material
and
w
orkmanship
for
one
year
after
initial
purchase.
This
limited
warranty
must
be
activated
at
the
tirne
of
purchase
by
returning
the
registry
portion
of
the
Warranty
Card
to
the
factory.
Should
a
malfunction
ever
occur,
the
dealer
from
whom
the
unit
was
purchased
will
be
glad
to
handle
return
for
factory
repair;
alternately,
for
prompt
service
,
ship
the
unit
,repaid
directly
to
the
factory.
Be
sure
it
is
well
packed
in
a
sturdy
carton,
with
shock-absorbing
material
such
as
foam
rubber,
styrofoam
9ellets
or
"bubble-pack"
completely
fillin9
the
remaining
space.
Particular
attention
should
be
paid
to
protecting
the
protruding
parts.
Include
a
note
describing
the
malfunction
,
and
instructions
for
return.
We
will
pay
one-way
return
shipping
costs
on
any
in-warranty
repair.
Because
of
specially
selected
components
in
this
product
,
field
repairs
are
not
authorized
during
the
warranty
period,
and
attempts
to
perform
repairs
may
invalidate
the
warranty.
-8-
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