Magnavox CMX 49545 Instruction Book
-,
r------------*----------..,
NAVSHIPS
900,853
INSTRUCTION
BOOK
for
SPEAKER-AMPLIFIER
NAVY
TYPE
CMX
49545
Ma,mfactrtred for
U.
S.
NAVY DEPARTMENT
BUREAU OF SHIPS
6,
THE MAGNAVOX COMPANY
Fort Wayne, Indiana
I--_____
-----*----------~
r----------------------*---------------------,
NAVSHIPS
900,853
INSTRUCTION
BOOK
for
SPEAKER
-AMPLIFIER
NAVY
TYPE
CMX
49545
lHallufaClm'ed
for
U.
S.
NAVY
DEPARTMENT
BUREAU
OF
SHIPS
by
THE
MAGNAVOX
COMPANY
Fort
Wayne,
Indiana
L-
_____________________
*
____________________
~
CONTRACT
NXsr
93879
Approved 1
JULY
1946
NAV5HIP5
900,853
Front
Matter
A
c
,
Front
Matter
NAVSHIPS 900,853
~DDRESG
NAvY DEPARTMENT.
BURPU
OF
SHIpS
NAvY
DEPARTMENT
Section
993-10
0
RD"ER
TO
FlU;:
NO.
BUREAU
OF
51-UPS
WASHINGTON
25.
D.
Co
ORIGINAL
27
June
1946
To,
All
Activities
concerned
with
the
Installation,
Operation
and
Maintenance
of
the
subject
"Equipment.
SUDj'
Instruction
Book
for
Speaker-Amplifier
Navy
Type
CMX-49545 (NAVSRIPS
900,853).
1.
NAVSRIPS
900,853
is
the
instruction
Dook
for
the
sUDje
ct
equipment
and
is
in
effect
upon
receipt.
2.
When
superseded
DY a later
edition,
this
publication
shall
be
destroyed.
3.
Extracts
from
this
pUDlication
may
be
made
to
facilitate
the
preparation
of
other
Navy
instruction
books
and
handbooks.
4.
Copies
of
this
pUDlication
may
be
oDtained
from
the
nearest
ElectronicS
Officer.
E.
L.
cocRIWIE
Chief
of
Bureau
"",,,
BUREAU
OF
sHIPS.
NAVV
DEPARTMENT.
WASHINGTON
2'.
D.
C.
B
NAVSHIPS 900,853
Front
Matter
Change
No.
Dale
Signature
of
Officer
Making
Correction
.,
c
NAVSHIPS
900,853
TABLE
OF CONTENTS
Paragraph
Contractual Guarantee
Report
of
Failure
SECTION
I - General Description
Suh;ect
Page
. . . . . . . . . . . . . . . . . iii
iv
I-I
1 Function .
..........
.
.....................................
I-I
I-I
I-I
I-I
I-I
2
3
4
5
Reference Data
Equipment Supplied
Equipment
Required But
Not
Supplied
Vacuum Tube Complement
...
SECTION
II-
Theory
of
Operation
I
Theory
of
Operation
SECTION
III
- Installation
and
Initial Adjustments
2
3
Unpacking
Installation
Initial Adjustments
.....
SECTION
IV -Operation
2-0--2-1
.................................
2~
3-0--3-1
4-0
3-0
3-0
3-1
1 Operation .
.............................................
.
4-0
SECTION
V - Maintenance
5-0--5-11-5-12
1 Operators Maintenance
..............
5-1
2
3
Preventive Maintenance
Corrective Maintenance
.......................................................
5-1
5-1
SECTION
VI
- Parts
and
Spare Parts Lists
......................................
6-1----{)-8
NA
VSHIPS
900,853
LIST OF ILLUSTRATIONS
Figure
1·1
Speaker.Amplifier CMX·49545
................................................
.
1·0
4-1 Lower Front Panel
...........................................................
.
.w
5·1 Speaker.Amplifier CMX·49545 -
Top
Chassis View
..............................
.
5·2
5·2 Speaker.Amplifier CMX·49545 - Lower Chassis View
............................
.
5'3
5·3 Speaker.Amplifier CMX·49545 - Lower Chassis View
............................
.
5-4
5-7 Parts For Cone Replacement
..................................................
. 5·9
5·8 Completed Cone Replacement
.................................................
. 5·9
LIST OF
DRAWINGS
Figure
Page
2·1 Functional Block
Diagram
....................................................
.
2·1
3·1
Main
Terminal
Board
Diagram
................................................
3·0
5·4
Audio
Frequency Curve
.......................................................
5·5
5·6
5·7
5·5
5·6
5·9
Cable Connection Diagram
Schematic Circuit Diagram
Amplifier
Wiring
Diagram
..............................................
5·11-5·12
LIST OF
TABLES
Table No.
6·1
Major
Unit
.........................................................
.
6·2
6·3
Combined Parts
and
Spare Parts Lists by Symbol Designations
List
of
Parts by
Navy
Numbers
................................................
.
6-4 Applicable Resistor Color Codes
..............................................
.
6·5 Applicable Capacitor Color Codes
.............................................
.
6-6 List
of
Manufacturers
.......................................................
.
Pllge
6-1
6-1
6·4
6·6
6·7
6-8
,
•
•
•
•
NAVSHIPS 900,853
CONTRACTUAL
GUARANTEE
The
Contractor
guarantees
that
at
the
time
of
delivery
thetof
the
articles
provided
for
under
this
contract will
be free
from
any defects
in
material
or
workmanship
and
will
conform
to
the
requirements
of
this
contract. Ex-
cept as
to
vacuum tubes, batteries,
rubber
and
material
normally consumed
in
operation,
the
equipment, includ-
ing
all spare parts, is
guaranteed
for a period
of
one
year
from
the
date
of
its delivery
to
and
acceptance
by
the
Government,
with
the
understanding
that
all items
found
to
be defective as
to
material,
workmanship
or
manufacture will be repaired
or
replaced, f.a.b. any
point
within
the
continental
United
States designated
by
the
Government,
without
delay
and
at
no
expense
to
the
Government;
provided,
that
such
guarantee
shall
not
obligate
the
Contractor
to
repair
or
replace any
such defective items unless
the
defect appears
within
the
aforementioned
period
and
the
Contractor
is noti-
fied
within
a reasonable time
and
unless
the
defect
is
not
the
result
of
normal
expected shelf life deteriora-
tion.
This
guarantee
shall
then
continue
as
to
corrected
or
replacing articles
or,
if
only
parts
of
such are cor-
rected
or
replaced,
to
such corrected
or
replacing parts,
until
one year
after
the date
of
redelivery.
To
the
extent
the
equipment,
including
all parts
and
spare parts, as defined above,
is
of
the
Contractor's
de-
sign
or
is
of
a design selected
by
the
Contractor,
it
is
also guaranteed, subject
to
the
foregoing
conditions,
against defects
in
design,
with
the
understanding
that
if
ten percent
or
more
of
the
total
quantity
comprising
such item furnished
under
the
contract
(but
not
less
than
two
thereof)
is
found
to
be
defective as
to
design,
the
entire item
will
be conclusively presumed to
be
of
defective design
and
shall
be
subject
to
one
hundred
percent correction
or
replacement by a suitably rede-
signed
item.
All defective items will be subject
to
ultimate return
to
the
Contractor
except
that
the
exigencies
of
the
naval
service may necessitate expeditious repair
of
certain
items in
order
to
prevent
extended
interruption
of
com-
munications
and
in
such cases
the
return
of
the defec-
tive items
for
examination by
the
Contractor
prior
to
repair
or
replacement shall be mandatory.
The
report
of
a responsible authority, including details
of
the
con-
ditions
surrounding
the
failure,
will
be acceptable as a
basis
for
effecting expeditious
adjustment
under
the
provisions
of
this contractual guarantee.
If
the
Government
does
not
require correction
Or
re-
placement
of
a defective
or
nonconforming
article, the
Contractor,
if
required by the contracting officer within
a reasonable time after
the
notice
of
defect
or
noncon-
formance, shall repay such
portion
of
the
contract price
as
is
equitable
in
the circumstance. Equitable
in
the cir-
cumstance is
to
be determined by mutual agreement be-
tween
the
Contractor
and
the
contracting officer. Failure
to
agree
to
such
adjustment
shall be a dispute concerning
a question
of
fact
within
the
meaning
of
the
section
of
this contract
entitled
"Disputes".
iii
iv
NAVSHIPS 900,853
REPORT OF FAILURE
Report
of
failure
of
any
part
of
this equipment,
during
its service life, shall be
made
to
the Bureau
of
Ships
in
accordance
with
current
instructions.
The
report
shall cover all details
of
the
failure and
give
the
date
of
installation
of
the equipment.
For
procedure
in
reporting
failures see
Chapter
67
of
the
Bureau
of
Ships
Manual,
or
superseding instructions.
CONTRACT:
NXsr
93879
DATE
OF
CONTRACf: 2 APRIL
1945
SERIAL
NUMBER
OF
EQUIPMENT
___________________
_
DATE
OF
ACCEPTANCE
BY
THE
NAVY
________________
_
DATE
OF
DELIVERY
TO
CONTRACf
DESTINATION
____________
_
DATE
OF
COMPLETION
OF
INSTALLATION
______________
_
DATE
PLACED
IN
SERVICE
_____________________
_
Blank
spaces
in
this
book
shall
be
filled in at time
of
installation.
Operating
personnel shall also
mark
the
"date
placed
in
service"
on
the
date plate located below
the
model nameplate
on
the
equip.
ment, using suitable methods
and
care
to
avoid
damaging
the equipment.
All requests
or
requisitions
for
replacement material
should
include the
following
data:
1.
Name
of
part
desired.
2.
Navy
stock
number
or,
when
ordering
from
an
Army supply depot,
the
Army stock number.
If
the
Navy
stock
number
has
not
been assigned,
the
requisitions
should
specify the following:
1.
Equipment
model designation.
2.
Name
of
part
and
complete description.
3. Manufacturers designation.
4. Contractors
drawing
and
part
number.
5. A WS,
JAN,
or
Navy
type designation.
SAFETY
NOTICE
The
attention
of
officers
and
operating
personnel
is
directed
to
Chapter
67
of
Bureau
of
Ships Man-
ual
or
superseding instructions
on
the
subject
of
Radio-Safety precautions
to
be observed.
l'
•
NAVSHIPS
900,853
)
Fi!lure
I-I
5
< •
peaker-Amp/ifier
-
Navy
Type
CMX
49545
1-0
r
General
Description
NAVSHIPS
900,853 Section 1
Paragraphs
1-5
SECTION
I
GENERAL
DESCRIPTION
1.
FUNCTION.
The
navy type
CMX·49545
Speaker.Amplifier is de-
signed
for
high-fidelity
reproduction
of
speech
and
music
when
used
with
the
navy
model
RBO
Radio
Receiving
equipment
for
entertainment
purposes
aboard
all types
of
Naval
vessels
or
at
Naval
shore
radio
sta-
nons
or
activities.
2.
REFERENCE
DATA.
a.
Nomenclature-Navy
Type
CMX·49545 Speaker·
Amplifier.
h.
Contract-NXsr
93879
dated 2 April
1945.
c.
Contractor
-
The
Magnavox
Company,
Fort
Wayne,
Indiana.
d.
Cognizant
Naval
Inspector-Inspector
of
Naval
Material,
Detroit,
Michigan.
3. EQUIPMENT SUPPLIED.
Quantity
per
Name
0/
Navy
Unit
e.
Number
of
Packages
per
Equipment-Main
unit,
one
box; Spare Parts, one box.
f.
Total
Cubical
Contents-Main
unit, crated,
4Vz
Cll.
ft.,
uDerated,
1%
cu.
ft.;
Spare Parts,
total
2¥2
cu. ft. crated.
g.
Total
Weight-Main
unit, crated, 100 Ibs.,
un-
crated 60 lbs.; Spare Parts, crated, 70 Ibs.
h.
Frequency
Range-100·5000
cps.
i.
Rated
Output-3
Watts.
j.
Voltage-1l5
V
AC±I00/
o
,
50-60 cps, 50
Watts,
single phase.
k.
Input
Impedance-620
Ohms±IO%,
balance4
or
unbalanced
to
ground.
Overall Dimension
Volume
Weight
A:
Crated
A:
Crated
A: Crated
Equipment
Designation
B: Uncrated
B: Uncrated
B: Uncrated
1 Speaker-
CMX
49545
A,
27"
x 19"
xIS"
A:
4%
cu. ft.
A,
100
lb
•.
Amplifier
B:
190/4" x 14"
x 11"
B:
1%
cu. ft.
B,
60 Ibs.
1 set
Equipment
A:
23%"
x 15lj4" x 12lj4"
A:
2%
cu. ft.
A,
70 lbs.
Spares
B:
18lj2" x
12%"
X
9lj2"
B:
11;4
cu. ft.
B,
46
lb
•.
4.
EQUIPMENT REQUIRED BUT
NOT
SUPPLIED.
Qutmtity
Name
0/
Navy
Type
Required
per
Equipment
Unit
Designation
Characteristics
1 Radio Receiving
Model
RBO
600
ohm
output
impedance; 6 milliwaus
to 2 watts
audio
output
Equipment
Power
Input
Cable
Interconnecting
Cable
5.
VACUUM
TUBE COMPLEMENT.
Each
of
the
Speaker. Amplifier units as
shipped
is
equipped
with
its full
complement
of
vacuum tubes as follows:
Type Quantity
Amplifier
JAN
6V6GT/G
3
Rectifier
JAN
SY3GT/G
1
1·1
Loading...