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RCA BA-13A - Technical Data

RCA BA-13A
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1
DESCRIPTION
TECHNICAL
DATA
Power
Supply
Required
100
to
130
volts,
50
to
60
cps,
5
5
watts
Fuse
Rating
1
ampere,
Type
MDL
Source
Impedance
600
or
1
50
ohms
Input
Impedance
Matching
600
or
150
ohms
(approximate)
Bridging
20,000
ohms
(approximate)
Rated
Output
Level
+
30
dbm
with
0.5%
total
rms
distortion
from
50
cps
to
15,000
cps
+
30
dbm
with
less
than
1.0%
total
rms
distortion
from
30
to
15,000
cps
Connections
Two
10-prong
plugs,
mounted
on
the
rear
panel
of
the
chassis,
which
engage
with
two
receptacles
provided
with
the
amplifier
Dimensions
and
Weight
Length
—
14
inches
Width
—
8
inches
Height
—
7%
inches
Weight
—
17
pounds
Noise
Level
Less
than
—
52
dbm
with
the
gain
control
in
the
maximum
position
and
the
input
and
output
circuits
terminated
in
600
ohms
Mounting
Shelf
mounting
in
the
Type
BR-2A
Panel
and
Shelf
Finish
Light
umber
gray
except
for
output
and
power
transformers
which
are
satin
black
Isolation
90
db
with
matching
input
100
db
with
bridging
input
Gain
Measured
at
1000
cps
with
gain
control
in
maxi*
mum
position
Matching
Input:
65
db
rt
1
db,
600
or
150
ohm
source
to
a
600
or
1
50
ohm
load
Bridging
Input:
28
db
from
a
600
ohm
terminated
line
to
a
600
or
150
ohm
load
(2
watts
output).
The
amplifier
has
a
plug-in
type
chassis
which
allows
easy
removal
from
shelves
or
racks
for
servicing
or
interchanging
units.
The
Type
BA-13A
amplifier
consists
of
three
stages
of
amplification
with
a
self-contained
power
supply.
A
power
switch
and
an
a-c
line
fuse
are
mounted
on
the
chassis.
Provision
is
made
for
controlling
the
gain
of
the
amplifier,
for
adjusting
the
hum
to
a
minimum,
and
for
checking
the
operation
of
the
individual
tubes.
The
gain
control
The
Type
BA-13A
Program
Amplifier,
MI-
11233,-A,
is
a
high-fidelity,
high-gain,
low-distor
tion
amplifier
designed
to
raise
the
output
of
pre
amplifiers
or
mixers
to
a
level
suitable
for
feeding
broadcast
telephone
lines
or
radio
transmitter
inputs.
It
may
be
used
as
a
bridging
amplifier
for
isolation
or
other
applications
where
a
20,000-ohm
amplifier
input
is
desirable.
The
Type
BA-13A
may
also
be
used
as
an
emergency
monitoring
amplifier
Frequency
Response
±1
db
(referred
to
1,000
cps)
from
30
to
15,000
cps
Measured
from
either
a
600-ohm
or
a
1
50-ohm
source
to
a
600-ohm
load
with
either
bridging
or
matching
inputs
Tube
Complement
(MI-11266)
2
RCA
1620
1
RCA
1622
1
RCA
5Y3-GT
When
increased
hum
distortion
and
microphonics
can
be
tolerated,
the
following
tube
complement
can
be
substituted:
2
RCA
6J7
1
RCA
6L6
1
RCA
5Y3-GT
Maximum
Input
Level
Matching
Input:
+
11
dbm
for
1.0%
total
rms
distortion
from
30
to
15,000
cps
(output
+30
dbm)
+
10
dbm
for
0.5%
total
rms
distortion
from
30
to
15,000
cps
(output
+18,
dbm)
Bridging
Input:
+
30
dbm
for
0.5%
total
rms
distortion
(output
+
18
dbm
)
Load
Impedance
(tapped
transformer)
600
ohms
balanced,
taps
for
150,
15,
7.5
and
5
ohms

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