Harman Kardon am-413g, LS-169G service manual

*

(

N A VSHIPS

91905

INSTRUCTION

AMPLIFIER,

DYNAMIC

BOOK

for

AF

and

AM-413/G

LOUDSPEAKER

(,0

LS-169/G

HARMAN-KARDON,

52

West

BUREAU

New

OF SHIPS

York

L_____________________

Houston

12,

NAVY

*

INC.

St.

N.Y.

DEPART~1ENT

~

Contract NObsr52352

Approved

by

BUShips:

10

April

1953

Effective Pages

AM-413/G

LIST

NAVSHIPS 91905

and

OF

EFFECTIVE

LS-169/G

PAGES

FRONT

MATTER

PAGE

NUMBERS

Title

A

to to to to to

page

C

CHANGE

IN

EFFECT

Original Original Original

PAGE

NUMBERS

to to to to to

to

CHANGE

IN

EFFECT

Original Original Original Original Original Original

)

,.,.

J

A

ORIGINAL

j

<'?,'

cJ

'"

FRONT

MATTER

(

(''

("

'·

•

From:

To:

Subj:

DEPARTMENT

BUREAU

WASHINGTON

Chief,

All

Installation, tenance

Instruction quency Dynamic

NAVSHIPS

Bureau

Activities

of

Amplifier

~udspeaker

91905

AM-413/G

OF

2S.

of

Concerned

Operation

the

Subject

Book

NAVSHtPs

THE

SHIPS

0.

C.

S~ps

for

AM-413/G and

LS-169/G

9190s

and

NAVY

with

and

Equipment

Audio

LS-769/G

Main-

Fre-

the

Code

10

fN

ftCP'C..Y

993-100

April

ftCrl:ft

1953

Prornulgoting Letter

T'O

1.

This subject receipt,

2.

When

this

publication

3.

Extracts

be

made

other

4.

tronics to Printing books cluded

in

and 250-020,

Department

All

the

are

the

Electronics

is

the

equipment

superseded

from

to

facilitate

Navy

requests

publications

nearest

Office.

in

Index

District

distributed, the

Bureau

of

instruction

and

is

in

by a

shall

this

of

When

Bureau

Publications,

H.

Chief

later

be publication

the

Defense

for

should

Publications

changes

notice

of

Ships

of

N.WALLIN

of

book

for

effect

edition,

destroyed.

preparation

Publications.

NAVSHIPS

be

directed or

revised will Journal

Ships

General

NAVSHIPS

Bureau

the

upon

may

of

Elec-

and

be

in-

and

B

Correction Page

NAVSHIPS 91905

AM-413/G

and LS-169/G

RECORD OF CORRECTIONS MADE

FRONT

MATTER

CHANGE

NO.

DATE

SIGNATURE

OF

OFFICER

MAKING

CORRECTION

";

,'

·~····

.. · .. ·.

,;;_,1

t)

.•.

)"··.·

<,~,-

c

.~

ORIGINAL

FRONT

MATTER

NAVSHIPS 91905

AM-413/G

Contents

and LS-169/G

Paragraph

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

] .

2.

3.

4.

5.

6.

7.

8.

Introduction Audio

Amplifier

Dynamic

Equipment Equipment

Shipping Vacuum

Reference Electrical

Electrical

General

Theory The The

Volume

Triode

Block

Description

of

Cathode

Differential

Compression

Clipper

Diagram

Dynamic

TABLE

Section

1 -

GENERAL

OF

CONTENTS

DESCRIPTION

--------------------------------------------------------------------------------------------------------------------------------------------------AM-413/G

Loudspeaker

Supplied

Required

Data

------------------------------------------------------------------------------------------------------------------------------------------------

Tube

Complement.

Data

------------------------------------------------···------------------------------------------------------------------------------------------

Characteristics Characteristics

of

Negative

Feedback.

Follower

Amplifier

......

-------------------------------------------------------------------------------------------------------------------

LS~169/G--------------------------------------------------------------------------------------------------------------

-----------------------------------------------------------------

But

Not

Supplied

__________________

of

Audio

of

Dynamic

Section

Urcmts

2-

___________

............

....................

........

---------------------------

_______________________________________________________________________

-----------·-·-·-.

Amplifier

Loudspeaker

THEORY

------------·----------

_____

AM~4l3jG_____________________________________________________________________

LS~169

O:F

-------------

------------------------------------------------------------------------------------------------------

---------------------------------····---------·······------------···--------·-···---------------····--------..

-------------------------------------------------------------------------------------

_________________

.

______

__

____________

_________

--------------------

____ _ ____ ____ _ _____

_____

.___________________________________________________________________________

jG_____________________________________________________________

OPERATION

____

-------

-------------------·-

_______ . _____

________ _ _______

_ _

_____

----------············----------------------------------------------------······--------···-------------------------------------------------···

Loudspeaker

LS~I69fG·----·-···---------·-····-··-------·-·······------······------------------------·-----------------------------

Page

1~1

1 ~ 1

1~2

1

~2

1~2

1~3

1--3

2~

I

2~I

2~3

2~6

(_

I.

2.

I.

2.

I.

2.

I.

2.

Installation Adjustment

Audio

Amplifier

Dynamic

Emergency

General Operation

General Trouble

Trouble Shooting

AM~413jG

Loudspeaker

Maintenance

Test

Shooting

Audio

Section

..............

LS~I69jG

Section

-------------------------------------------------·-······-----------------------------------------------

................................

5-

OPERATOR'S

6-

PREVENTIVE

7-

CORRECTIVE

Procedures

Amplifier

AM~4I3/G......................................................................................

Section 8 -PARTS

3-

INSTALLATION

4-

OPERATION

-----·-······----·······------------------·····-------------------------------

MAINTENANCE

........................ ·------------·················---------····--····-···---········-------·····

LISTS

INDEX

3~I

4~I

5~0

6~I

7~2

ORIGINAL

Illustrations

NAVSHIPS 91905

AM-413/G

and LS-169/G

FRONT

MATTER

Figure

l~l

2~1

2~2

2~3

2~4

2~5

2~6

2~7

2~8

2~9

2~10

2~ll

2~12

3~1

3~2

Audio

Simplified

Amplifier

Block Amplification Use

of

Negative Cathode Cathode

Cathode Basic

Basic A

Block Schematic

Cable Cable

Follower Follower

Follower

Principles

Compressor

Triode

Diagram

Connections

Clipper

of

AM~413/G

Diagram

Without

Feedback

and

of

Compressor

of

Audio

Dynamic

for

Audio

for

Dynamic

LIST

OF

ILLUSTRATIONS

Title

Section I -GENERAL

and

Dynamic

Section

Negative

of

2-

Audio

Feedback

THEORY

Amplifier

.............................................................................................. .

DESCRIPTION

Loudspeaker

OF

OPERATION

AM-413/G

LS~l69/G...................................................

.................................................................. .

............................................................................................................................ .

Differential

Amplifier

Loudspeaker

Amplifier

Circuit..

AM~413/G

LS~l69jG

Section

3-

Amplifier

Loudspeaker

........................................................................................ .

.................................................................................................. .

...................................................................................... .

INSTALLATION

AM~413jG...............................................................................

LS~l69/G.......................................................................

Page

1~0

2~0

2~2

2-4

2~4

2-4

2~5

2~6

3~0

4~1

4~2

5~1

7~1

7~2

7~3

7~4

7~5

7~6

Operating Operating

Location

Failure Audio

Report,

Amplifier

Terminal Terminal

Voltage Schematic

Controls Controls

of

Tubes,

Board Board

and

Resistance

of

Section

Fuses,

Section

Sample

AM~413/G

(TBIOI), (TBI02),

Audio

Amplifier

Audio

Amplifier

Dynamic

and

Section

Loudspeaker

5-

Electrolytic

7-

4-

OPERATION

AM-413/G...............................................................................

LS~l69/G.......................................................................

OPERATOR'S

MAINTENANCE

Capacitors...........................................................................

CORRECTIVE

MAINTENANCE

Form.....................................................................................................................

Chassis Component Component

Chart

with

Panel

open

.........................................................................

Placement Placement

Diagram...............................................................

...................................................................................................................

AM-413/G...............................................................................................

4~0

5~0

7~1

7-4

7~5

7~ll

~

II

ORIGINAL

FRONT MATTER

NAVSHIPS

AM-413/G

91905

and LS-169/G

Tables

(

('

Table

1-1 1-2 1-3

1-4

5-l

6-1

6-2

7-1 7-2 7-3 7-4

Equipment Equipment Shipping

Vacuum

Emergency

Maintenance Operation

Trouble Voltage

Tube Winding

Data

Tube

Shooting

and

Ratings

Data

LIST

Section

Supplied Supplied

Maintenance

Test

Check

Resistance

for

Amplifier

for

Loudspeaker

-----------------------------------------------------------------------------------------------------------------------------------------------

Complement

Section

Schedule

Procedure

Section 7

1-

...........

---------------------------------------------------------------------------------------------------------------

5-

6--

..............

...........

--CORRECTIVE

OF

TABLES

Title

GENERAL

AM-413/G

LS-169

OPERATOR'S

PREVENTIVE

-----------------------------------------------------------------------------------------------------------

--------------------------------------------------------------------------------------------------------------

DESCRIPTION

.........

------------------------------------------------------------------------------

jG

......

-----------------------------------------------------------------------------

MAINTENANCE

Page

1-1 1-2 1-2 1-2

S-0

6-1 6-2

7-3 7-6 7-8

7-9

8-1 8-2

8-3

8-4

8-5

(

(~

List

of

Major

Table

Cross

Applicable

List

of

Reference

of

Manufacturers-------------------------------------------------------------------------------------------------------··----·--··--------···------

Units

Replaceable

Parts

Color

Codes

Section

.........

------------------------------------------------------------------------------------------------------------------------------

Parts

......

------------------------------------------------------------------------------------------------------------------

LisL·-----------------------------------------------------------------------------------------------------------------------

and

Miscellaneous

8-

PARTS

Data_________________________________________________________________________

LISTS

_ _

8-1

8-2

8-12 8-13

8-14

(c

ORIGINAL

Ill

Guarantee and Installation

Record

The

equipment, batteries, for a period acceptance found repaired

United to Contractor the notified result

above, it

is design eaid prising design, subject redesigned

to

or

States

the

Government;

defect

thereof

of

normal

To

the

is

of

also

with

item,

such such

to

rubber

one

and

of

one

by

the

be

defective

replaced,

designated

to

make

appears

in

writing

expected

extent

guaranteed,

but

item.

the

Contractor's

the

understanding

not

less

item

furnished

item

will

hundred

AM-413/G

including

material

year

from

Government

as

to

material,

f.o.b.

any

by

the

provided

repair

within

or

the within a reasonable shelf

equipment,

design

subject

than

two

under

be

conclusively

percent

NAVSHIPS 91905

and LS-169/G

GUARANTEE

all

parts

and

spare

normally

the

with

Govemment,

that

replacement

aforementioned

life

including

to

the

that

of

(100%)

consumed

date

of

the

workmanship

point

within

such

deterioration.

or

is

of a design

foregoing

if

ten

percent ( 10%)

any

such

the

contract, presumed

correction

delivery

understanding

without

guarantee

of

any

all

parts

item,

parts,

in

operation,

of

or

the

continental

delay

will

such

period

time

conditions,

are

to

and

selected

of

the

found

be

of

or

replacement

except

the

manufacture

defective

the

spare

or

vacuum

equipment

that

all

and

at

not

the

defect

parts,

by

the

against

more

total

quantity

to

he

defective

tubes,

is

guaranteed

to

and

such

items

will

limits

Contractor

of

the

no

expense

obligate

items

is

as

Contractor,

defects

of

design

by a suitably

unless

not

defined

any

as

the

such com-

and

FRONT MATTER

,

be

is

···")

in

to

All

In

view

the

use

conditions

ment

without

of

the

Service,

order the repair authority,

acceptable

of

ment or

Contract

Serial Date

Date Date

Date

to

return

or

this

contractual

The

fails

replaced

number

of of

of

placed

Blank

such

defective

of

the

fact

of

equipment

as

to

preclude

jeopardizing

therefore,

prevent

of

the replacement including

as a

basis

above

one

to

perform

by

the

Number:

of

acceptance

delivery

completion

in

spaces

items

will

he

that

normal

in

the

extended

defective

will

details

for

affecting

guarantee.

year

period

satisfactorily

Contractor

such

remote

retum

the

integrity

may

necessitate

interruption

items

not

of

the

will

subject

activities

of

for

be

conditions

expeditious

not

due

be

to

ultimate

of

the

portions

the

defective

of

Naval

expeditious

of

examination

mandatory.

include

to

any

guaranteed

communications.

surrounding adjustment

defects,

INSTALLATION RECORD

NObsr-52352

equipment

by

the

to

contract

of

installation

on

this

page

...............

destination

-----------------------------------------------------------------------------

..

------------------------------------------------------------------------------

shall

be

Date

........

----------------------------------------------------------------

filled

in

return

Naval

of

the

items

communications,

repair

by

the

The

report

any

portion

anew

of

Contract:

at

the

time

Service world

for

Contractor

the

under

and

any

under

of

to

repair

of

the

Contractor.

may

result

or

under

or

the

exigencies

of

such

In

such

of a responsible

failure,

the

provisions

time

the items this

provision.

22

March

installation.

such

replace-

items

cases

prior

will

be

equip-

repaired

1951

in

to

)

••

J

v.J

IV

ORIGINAL

FRONT

MATTER

NAVSHIPS 91905

AM-413/G

and LS-169/G

Miscellaneous Data

Safety Notice

Resuscitation

and

(

Report

shall

he

made

using

form

of

the

failure

in

reporting

seding

following

l.

2.

specified:

l.

2.

3.

4.

5.

of safety

instructions.

All

requests

Federal supply

Name

If

the

Equipment Name Manufacturer's Contractor's

JAN

or

The

attention

Bureau

precautions

of

failure

to

NAVSHIPS

and

failures

or

data:

stock

number

depot,

and

of

the

short

appropriate

model

part

drawing

Navy

Ships

REPORT

of

any

the

Bureau

NBS 383

give

the

date

see

Chapter

ORDERING PARTS

requisitions

or,

Signal

description

stock

or

type

and

complete

designation.

and

type

number.

SAFETY NOTICE

of

officers

Manual

to

be

observed.

part

of

this

of

Ships

(revised).

of

installation

67

for

when

ordering

Corps

stock

of

part.

number

designation,

description.

part

number.

and

operating

or

superseding

OF FAILURE

equipment, in

accordance

of

the

Bureau

replacement

from a Marine

number.

is

not

circuit

personnel

instructions

The

report

of

the

material

available

symbol,

during

equipment.

of

with

shall

Ships

Corps

the

and

is

directed

on

its

entire

current

cover

Manual

should

or

following

item

the

subject

service

regulations

all

For

procedure

or

include

Signal

number.

to

Chapter

of

details

super-

Corps

shall

radio-

life,

the

he

67

(

(,,,

(,

This

equipment

if

contacted

working

equipment,

KEEP

Operating change Under

controls

casualties touching

DON'T Under for

presence

AN TION DISPLAYED POSTERS MEDICINE

with

While

AWAY

tubes

certain

in

always

them.

SERVICE

no

circumstances

the

purpose

or

APPROVED

BY

by

operating

the

equipment.

every

practicable

the

following rules

FROM

personnel

or

make

conditions

the

off

remove

of

assistance

POSTER

THE

PRONE

IN

MAY

BE

AND

SURGERY.

employs

personnel.

LIVE

must

adjustments

dangerous

position

OR

ADJUST

should

servicing

of

another

PRESSURE

EACH

OBTAINED

WARNING

voltages

safety

CIRCUITS:

at

all

due

power

any

or

adjusting

which

Extreme

precaution

must

he

times inside

potentials

to

charges

and

discharge

ALONE:

person

are

caution

has

strictly

observe equipment

the

all

may

retained

reach

equipment

capable

RESUSCITATION

ILLUSTRATING

METHOD

RADIO,

RADAR,

UPON

THE

REQUEST

dangerous

should

been

observed:

safety

with

exist

by

and

ground

within

of

rendering

RULES

SHALL

OR

SONAR

TO

and

he

exercised

incorporated

regulations.

high

voltage

in

circuits

capacitors.

circuits

or

enter

without

BE

the

aid.

FOR

PROMINENTLY

ENCLOSURE.

THE

BUREAU

may

he

fatal

when

in

this

Do

not

supply

with

the

immediate

RESUSCITA-

on.

power

To

avoid

prior

enclosure

OF

to

ORIGINAL

v

-

I

0

MONITOR

LEVEL

0

-

C1)

"'

t'l

-

o·

:I

0

COMPRESSOR

ON

OFF

0

LEVEL

4 5 6

307

2 e

I 9

0

10

AM

413/G

AMPLIFIER,

SUPPLY

11SV

SERIAL-

MANUF'

...

NAVY

.

CTUREO

DEPARTMENT

BUREAU

HA~MAN

KARDON

:;~.;~;:.

~~-

®

'~'

A F

11i!l60"-'

FOR

0

Q

DF

SHIPS

lNC

@

0

POWER

ON

®

Off

®

)>

3:

I

o~:=ooz

-)>

~<

Gl"'

::r:

Q

:;;

:I

"'

a.

-o

r-

....

~~'-o

.!.~

o-

-o

Gl

-

0

!:li:J

Gl

z

)>

r-

LEVEL

Figure

1-l.

Audio

Amplifier

AM-413/G

and

Dynamic

Loudspeaker

LS-169/G

•

LOUDSPEAKER, DYNAMIC

SERIAL-

"""'UFACTURED

NAVY

DEPARTMENT

-BUREAU

Ho.~-:MAN-K.AR~~:·v;,~:

CGN,~AC'

~

•

FOfl

OF

SHIPS

•

LS-169/G

0

m

na

"'

!:li:Jm

:;;z

-tm

-!:li:J

0)>

Zr-

(

(c

l

GENERAL DESCRIPTION

1. INTRODUCTION

This

instruction

ing

to

the

description, Audio speaker general conjunction associated

2.

Amplifier

LS-I69

communication

A.

F.

AMPLIFIER

a. A.

F. amplifier signed rack. being

jG.

with

equipment.

Amplifier

and a volume

for

mounting

Use

of

determined

switch.

b.

The

amplifier

with

less

than signals cies is tacles, balanced former. rear

c.

The a a 6 line, a puts

of

between

received

each

The

of

the

Amplifier

two

watt

milliwatt

and

headset.

are

from

through

winding

a I

The

located

Connection through a monitoring panel. varies Monitor output

Quantity

per

Equipment

In

addition

the

volume

Level

of

the

I

1

I

Audio

l

I

AC

I

2

I

Audio

2

I

Audio

I

Cable

to

1

i

Cable

I

to

2

Instruction

I

Unless

hook

contains

operation,

AM-413/G

This

equipment

purposes

Naval

AM-413/G

AM-4I3/G

in a standard

the

volume

by

provides

7%

harmonic

.OOI

to 6 milliwatts

200

and

5000 cps.

either

individually

of

the

input

receptacles

amplifier.

provides

balanced

balanced milliwatt

receptacles

at

the

to

the

headset

to

of

all

control

monitoring

TABLE

Name

of

Amplifier

Power

Input

Plug

Output

Clamp

fit MCOS-2

Clamp

fit

RG-I08/U

Book

otherwise

information

and

Dynamic

when

radio

receiving

lSee figure J-JJ

consists

compressor,

compressor

the

position

power

output

distortion

The

or

both

connected

amplifier

are

three

600

circuit

for a loudspeaker,

circuit

unbalanced

for

the

rear

of

output

jack

located

the

Level

three

outputs,

which

controls

jack.

1-1.

A.

Unit

Plug

with

Ferrule

cable

with

Ferrule

cable

stated,

NAVSHIPS 91905

AM-413/G

and

LS-169/G

SECTION 1

GENERAL DESCRIPTION

d.

The

volmne

pertain-

maintenance

Loud-

is

suitable

operating

sets

of

an

audio

and

is

I9

inch

relay

is

optional,

of a toggle

of 2 watts

for

input

at

frequen-

input

signal

of

two

recep-

to

a 600

input

trans-

located

ohm

for

at

outputs:

a 600

circuit

balanced

the

amplifier.

is

achieved

on

the

front

Control

which

there

only

F.

AMPLIFIER

Navy Type

I

I Designation

1

AM-4I3/G

I AN-3I06-

I

l4S-7S

AN-3I06-

I4S-2S

AN-3106-

I4S-2P

AN-3057-6

AN.3057-6

I NAVSHIPS

9I905

dimensions

of

for

in

and

de-

ohm

the

ohm

for

out-

is a

the

are

AM-413/G

I

in

variation input

variation pressor panel

e. A

built-in primary volts,

50-60 voltages consumption voltage Switch front of

the

f.

The

panel forms quick-acting panel interior

3.

DYNAMIC

(See

figure

Dynamic

relatively

of

Audio ceived of

the

means

then manent

4. EQUIPMENT

The

fier

faithful

Amplifier

through a receptacle

Loudspeaker

of a constant

fed

through a matching

magnet

complete

AM-413/G equipment I69/G tion a

is

refer

Combined

EQUIPMENT

Overall

Height

listed

to

51Jt

l-7/16

I-7/16

I-7/I6

I-S/64 I-5/64

llVz

inches,

I

I I

volume

On-Off

of

required

is

and

panel.

amplifier.

the

to

available

LOUDSPEAKER

7-JJ

Loudspeaker

supplied

Section 8 of

Parts

Dimensions

Width

I9

lYs

IYs

1Ys

3%

compressor

in

output

of

volume

.001

Switch

the

Amplifier.

transformer-fed

taps

for

operation

cycles,

not

the

is

bottom

of

more

The

so

single

in

the

equipment

pilot

fuses

hinged

cover

fasteners,

rotate

downward,

for

reproduction

AM-413/G.

panel,

impedance

type

six

inch

SUPPLIED

lSee figure

equipment

is

listed

in

for

Dynamic

in

Table

1-2.

and

Spare

SUPPLIED

Depth

I

8%

IYa

I

lYa

IYs

%

Ys

%

7/,

.ll

Vz

cubic

inches,

circuit

within 3 db

to 6 milliwatts.

is

located

power

from

phase

AC,

equipment.

at

than

50 watts.

lamp

are

located

are

located

to

the

amplifier

of

the

when

released,

making

inspection

LS-169/G

of

the

Input

available

is

adjusted

attenuator,

transformer

Loudspeaker.

J-JJ

supplied

Table

for

I-I.

Loudspeaker

For

additional

this

instruction

Parts

List.

I

Volume

I I 870

I

1.7 2 oz.

I

1.7

I

1.7 2 oz.

. 3

. 8

I

so

!

weight

pounds.

Section

Paragraph

maintains

The

on

the

supply,

105/llS/125

supplies

Total

nominal

The

at

the

chassis.

permit

the

and

servicing.

is

capable

signal

from

the

in

level

to a per-

A.

F.

The

complete

informa-

book

I

Weight

!

lSVz

I

2 oz.

I

I oz . 1 oz . 4

I

i

I

9 oz.

!

the

for

an

Com-

front

with

all

power

line

power

on

the

rear

that

Two

the

chassis

of

output

is

re-

rear

by

and

Ampli-

LS-

for

1

it

is

I

ORiGINAL

1-1

1 Section

Paragraph

NAVSHIPS 91905

5

AM-413/G

and

LS-169/G

GENERAL

DESCRIPTION

Quantity

per

Equip-

ment

1 1

1

Dynamic Plug

Cable

to

2

Instruction

Unless

5. EQUIPMENT

None

of equipment devices as

6. SHIPPING DATA

sizes

used

radio

A

list

is

given

Shipping

Box

No.

of

REQUIRED

the

is

supplied,

in

conjunction

receiving

shipping

in

Table

cables

TABLE

Name

Loudspeaker

Clamp

fit

RG-108/U

Book

otherwise

required

nor

sets.

boxes,

1-3.

Name

of

with

BUT

are

with

their

1-2.

Unit

Ferrule

Cable

stated,

NOT

any

the

Contents

LOUDSPEAKER LS-169/G EQUIPMENT

Navy

Type

Designation

LS-169/G AN-3106-

Overall

Height

7 19 4

l

7/16

14S-2S

l

5/64

NAVSHIPS

dimensions

SUPPLIED

for

use

of

the

equipment,

contents

TABLE

91905

are

with

auxiliary

such

and

their

1-3.

Designation

the

11¥2

in

inches,

volume

7. VACUUM

The

vacuum AM-413/G are

used

SHIPPING DATA

Overall

Height

in

SUPPLIED

Dimensions

Width

lYs lYs

Ys

8% cubic

inches,

TUBE

COMPLEMENT

tube

complement

is

given

in

Dynamic

Dimensions

Width

Depth

Ys

Yz

weight

Table

Loudspeaker

Depth

1-4.

Volume

532

1.7 2 oz.

.8

so

pounds.

of

Audio

No

vacuum

LS-169/G.

Volume

Weight

S¥2

l oz.

9 oz.

Amplifier

tubes

Weight

1

2

*

When

l2AT7WA 6005 5Y3WGTB

8.

REFERENCE

a.

Nomenclature

b.

Contract

c.

Contractor

AF

AC Audio Audio Cable

Instruction

Loudspeaker*

Instruction

Supplied

]an

Type

--

DATA

AF

Number

.... --------------------------Harman-Kardon,

Amplifier Power

Input Output

Clamp

Unless

Amplifier

............ A.

Plug

Book

otherwise

AM-413/G

F.

and

date

NObsr52352,

AM-413/G AN-3106-14S-7S AN-3106-14S-2S AN-3106-14S-2P

AN-3057-6

NA

VSHIPS LS-169/G NA

VSHIPS

stated,

TABLE

Twin Beam

dimensions

1-4.

Triode

Power

Full-Wave

Amplifier

22

52

West

Houston

New

York

91905

VACUUM

Tube

Type

Rectifier

AM-413/G

Mar.

1951

Inc.

St.

12,

N.Y.

are

8¥2

10 22

inches,

volume

TUBE

d.

Cognizant

e.

Number

f.

Equipment

g.

Equipment

22

cubic

feet,

COMPLEMENT

Quantity

5 l l

Naval

of

Packages

Cubical

Total W eight

12

7

I

weight

Inspector

per

Contents

1.3

0.89

38

21

i

-

pounds.

Reference

VIOl

Symbols

through

Vl05 V106 Vl07

.....

Inspe~tor

Material, New

York,

Equipment._

crated:

uncrated:

_______

crated: uncrated:

--·-

of

Naval

U.

S.

N.

New

York

____________________

1.3

cubic

.5

cubic

38

lbs.

!

feet feet

17 lbs.

;:>

,

,~,

,J

1-2

ORIGINAL

GENERAL DESCRIPTION

NAVSHIPS

AM-413/G

and

91905

LS-169/G

Section 1

Paragraph

8

(

(~

(

a.

Nomenclature

h.

Contract

Contractor

c.

d.

Cognizant

e.

Number

Equipment

f.

g.

Equipment

9.

ELECTRICAL

AMPLIFIER

(a)

Frequency

(b)

Input

(c)

Input

Dynamic

LeveL

Loudspeaker

..

Dynamic

Number

.........

---------------------

Naval

of

Packages

Cubical

Total

CHARACTERISTICS

AM-413/G

Response

Impedance

...........................

LS-169/G

Loudspeaker

and

date

NOhsr52352, 22 Mar. 1951

Harman-Kardon, 52

West

Houston

York

New

Inspectorinspector

Material, NewYork,N.

per

Equipment__

Contents

crated: uncrated:

WeighL

±

ldb

...................... 600

.89 cubic

............

crated:

uncrated:

OF

AUDIO

from

200

OOl

to 6 milliwatts

ohms ± 10%

LS-169/G

Inc.

St.

12,

N.Y.

of

Naval

U. S. N.

Y.

________________

.3 cubic

to

5000

}

feet

21 lhs.

6 lbs.

cps

(d)

Outputs

(e)

Compression

(f)

Output

(g)

Distortion

(h)

Signal

(

i)

AC

(I) (2)

(

3)

(

4)

10.

ELECTRICAL LOUDSPEAKER

(a)

Frequency

(b)

Input

(c)

Maximum

(d)

Attenuation

(

1)

2 watts, 600 (2) 6 milliwatts, (

3) l milliwatt, Range

Variation

................................

Plus

Noise

Power

Requirements: Voltage Frequency

Phase

Power

Impedance

__________________________

______________________

----------------------------------------Single Consumption

CHARACTERISTICS OF

LS-169/G

Response

Power

Input..

Control

ohms,

...............

of

compressor

to

Noise

.................... 200

----------------------------------600

----------------4db

balanced

600

ohms,

600

ohms,

OOI

not

Ratio not

l05/ll5/125 50

............

............................ S

balanced

unbalanced

to 6 milliwatts

more

than

more

than

less

than

to

60

cps

SO

watts

DYNAMIC

to

5000

per

division

ohms watts

3db

7%

50db

cps

(

(k_

(,

ORIGINAL

1-3

2 Section

NAVSHIPS 91905

AM-413/G

and LS-169/G

THEORY

OPERATION

OF

~

INPUT

Figure

rv

2-1.

VOLUME

COMPRESSOR

Simplified

r--

Block

OFF

ON

Diagram

AMPLIFIER

COMPRESSOR

SWITCH

of

Audio

Amplifier

I--

AMPliFIER

STAGES

AM-413/G

rv

OUTPUT

l

')

~-

ifi"

')

~~I

.......

l

-::.:.!="

Figure

SUBTRACTION

CIRCUIT

2-2.

Figure

Amplification

~

FEEDBACK

2-3.

Use

Without

VOLTAGE

of

Negative

AMPLIFIER

Feedback

f-.

,~)

f\J"'~'

l

..

\~

2-0

ORIGINAL

THEORY OF

OPERATION

NAVSHIPS

AM-413/G

and

91905

LS-169/G

Section 2

Paragraph

1

(

("

"·~t

'

(

THEORY OF OPERATION

1. GENERAL DESCRIPTION OF CIRCUITS

Audio fier basic

gram,

is

fed

pressor

volume

2.

Negative Amplifier is

illustrated

negative

parison. A negative tion portion

applied polarity amplifier

2-3, ity

must the

sig~'lal,

An that the

an flattened

figure

amplifier. A portion is

the

cycle, peaked partially

the

has 2-2. noise,

a

certain

will

due

age

applied

output

of

is,

loss

ing

stages

Amplifier

and a volume

functions

if

the

directly

Switch

compressor

THEORY OF NEGATIVE FEEDBACK

feedback

AM-413/G.

in

feedback

or

inverse

of

the

to

the

to

the

may

the

output

as

the

input.

be

subtracted

amplifier

an

adding

outstanding

it

usually

amplifier

out

2-3,

negative

subtracted

feedback

the

output

up

positive

compensate

amplifier.

less

distortion

In a similar

hum,

and

point,

be

the

characteristics

to

the

subtraction

from

the

input

to

the

of

the

amplifier

the

greater

in

gain

may

the

amplifier

to

Lhe

AM-413/G

compressor.

of

the

circuit.

Compressor

into

the

is

ON,

and

is

The

figure

2-3.

is

shown

feedback

feedback)

output

input

signal

consist

of

is

reduces in in due

from

voltage

Therefore

the

input

amplifier

is

the

amplifier.

of

applied

of

the

In

this

from

of

opposite

circuit

property

which

to

distortion

feedback

of

the

having a flattened

of

the

half

for

than

manner,

phase

more

of a portion

signal,

of

reduced.

reduction

be

compensated

with a larger

Switch

amplifier

the

signal

then

into

used

in

use

The

in

circuit

voltage

the

one

or

amplifier

case,

the

input.

is

used.)

of

the

distortion

it

is

used.

the

positive

the

distorted

input

subtraction

cycle.

the

flattening

the

output

the

output

negative

shift

in

feedback

of

the

there

the

amplifier.

is

reduced.

The

consists

Figure

As

is

stages.

the

of

arrangement

figure

(also

of

amplifier

to

the

more

has

the

polarity

negative

in

is

used

signal.

This

the

amplifier.

is less

more

in

effective

for

signal,

shown

OFF,

is

circuit

negative

called

is

an

feedback

(If

Figure

the

peaked

of shown

feedback

amplifier.

there

of

In

of

an

2-1

shows

in

the

If

the

fed

amplifier

of

feedback

2-2

for

degenera-

one

in

amplifier

in

amplifier. stages. the

In

same

the

output

to

the

feedback

produced

2-2

peak

has

amplifier.

with

the output As a

result

positive

circuit

wave

produced

the

amplifier

in

is,

the

However,

the

output signal Therefore,

effect,

feedback

gain.

either

or

adding

SECTION 2

ampli-

the

dia-

signal

Com-

into

the

stages.

Audio

without

com-

which

opposite

the

by

The figure polar-

voltage

of

input

by

shows

been

In

same

voltage

of

half has

will

by

figure

reduces

Up

to

better

volt-

actually

the

gain

there

The

feed-

more

a

is

a

Negative

tics

of

to

decrease quency variations comes a smaller

a

result, tion fier.

This

loss

in there signal effective

Negative

the

output

is

proportional called variations by

feeding should output age

is

called

variations

3.

THE CATHODE FOLLOWER

A

cathode When the

tube

the

cathode

goes

in

tive, goes put

voltage polarity by

egk

In

other grid the

output is a negative of

the has a voltage be

used

all

the without is a variation

4.

THE

A

2-6.

For

current

phase

feedback

the

amplifier.

because a very

signal

or

aging

after

of

the

input

larger

gain.

Conversely,

will

be

entering

gain.

feedback of

voltage

in

output

back

increase

voltage

proportional

current

in

output

follower

the

grid

increases.

resistor

the

positive

the

current

in

the

negative

of a cathode

as

the

(see

fig.

words,

and

cathode

voltage.

output

as a

input

loading

of

DIFFERENTIAL AMPLIFIER

differential

signal

increases.

with

e

1

is

applied,

percentage

the

subtraction,

signal

more

the

amplifier,

an

amplifier.

to

the

feedback.

more

and

should

to

feedback.

is

driven

Therefore,

increases,

direction.

decreases,

input.

2-4)

instead

the

equals

voltage

is

fed

gain

of

power

signal

down

the

amplifier

e1, as

In

For

•

tends

If

tubes,

feedback,

reduces

voltage

feeding

current

Therefore,

cathode

the

to

stabilize

the

gain

of

high

or

because

the

feedback

of

the

there

actually

partially

if

output

Voltage

voltage

decrease. the

circuit

positive,

direction.

The

tube

actual

feedback

back

slightly

amplifier.

across a very

the

signal

other

signal

the

and

tending

the

If

voltage,

due

back

output

Current

due

is

the

and

When

and

follower

current

of

e

8

voltage

the

to

the

less

input

follower

circuit

goes

words,

e

,

2

compensates

gain

the

if

If

shown

the

Therefore,

•

However,

input the

circuit

It

the

amplifier

or

very

of

line

input

is a larger

fed

into

should

consequently

to

effect

of

feedback

the

feedback

to

changes

the

output

less

voltage

the

feedback

current,

feedback

to

changes

in

current

voltage

the

output

the

grid

the

output

has

is

applied

voltage

cathode

in

input.

circuit.

is

as

than

unity.

can

apply

low

circuit.

shown

positive,

the

current

the

This

characteris-

tends

low

fre-

voltage

signal.

por-

the

ampli-

for

the

increase,

less

reduce

loading

the

figure

drop

determined

egk

impedance

Figure

signal

voltage

circuit

reduces in

voltage

if

circuit

reduces

in

load.

through

across

voltage

is

nega-

voltage

the

same

= es-ek.

between

minus

follower

which

circuit

It

almost

in

figure

the

is

the

load

the

volt-

2-4.

out-

can

2-5

tube

goes

be-

As

on

is

all

in

ORIGINAL

2-1

2

Section

NAVSHIPS 91905

AM-413/G

<>---lt-----t---:..------.---(

INPUT~

and LS-169/G

a+

THEORY

OPERATION

~OUTPUT

OF

~

cr----Jf

INPUT

..,-

J

e.

1

Figure

e,

Figure

j

!

2-4.

2-5.

e

••

2-6.

Cathode

J

Differential

-

Follower

S+

\;:::::.,-

~

Follower

~-

--

Amplifier

B+

Circuit

~

OUTPUT

y·,_,,.,

·"·c·

.. · ...

)

''"

2-2

INPUT

e.

-!-

figure

II

PUT

e •

..1.

=

2-7.

Cathode

Follower

and

B+

Differential

OUTPUT

-!-

Amplifier

iJ

ORIGINAL

THEORY OPERATION

OF

NAVSHIPS

AM-413/G

and

91905

LS-169/G

Section 2

Paragraph 4

positive, the the other Thus, e1 and

(see fier two same and he

other

effective equals 2-7 cathode

5. VOLUME COMPRESSION

A attempts less put

AM~413/G

The

shown resistor. can hundredth

small,

put

voltage to

hold V-1 the

R~3,

When the of tween controlled. normally put V ~ l put

6.

TRIODE

A For tional ceeded voltage the is

made cathode due Thus, cess

the

cathode

grid,

or

the

cathode.

words, the

e

figure

is

therefore

signals.

polarity,

cathode.

constant

hand,

current

•

This

2

2~6)

Therefore,

the

used

If

there

Tbe

and

if

e1 and

signal

the

sum

of

shows a cathode

of a differential

volume

of of

to

the

compressor

keep

magnitude

volume

varies

method

in

be

R-1

voltage

is

being

AC

which

V ~ l

circuit

R~2.

zero

of

figure

R-1

represents a variable

adjusted

of

R~2.

is

made

equals

increased,

the

output

used

in

resistance

can

has

shown

Therefore,

and

In

Audio

cut-off

of

the

compressor

is

made

less

constant.

CLIPPER

triode

small

clipper

signals,

amplifier.

on

the

is

exceeded

signal

exceeds

much

and

grid.

to

grid

current

whenever

voltage

appears

goes

grid

goes

current

depends

can

also

egk=e1~e2.

to

obtain

e1

and

ez

will

current

there

will

e2 are

applied

the

magnitudes

follower

is

the

output

of

compressor

less

than 3 db

obtaining

2~8.

R-2

to

any

value

When

practically

the

input

R-1

is

constant:

place

of

between

he

made

zero

bias,

becomes

by

varying

cut-off,

Amplifier

for

very

tends

negative,

circuit

the

circuit

For

large

positive

larger

on

the

half

the

bias,

than

Therefore,

flow

the

signal

across

positive

negative

the

is

in

on

he

shown

The

are

he

no

flow

he

of

between

being

current

opposite

the

difference

differential

the

difference

equal

signal

through

no

opposite

grid

of

used

with

by

and

output.

e1

and

amplifier.

an

electronic

voltage

the

volume

input

in

(.001

constant

signal.

Audio

to 6 miliwatts). compression

represents a large

resistance

from

infinity

the

input

signal

infinite,

voltage.

made

smaller

the

Figure

R-1.

plate

much

its

less.

output

When

and

larger

dvnamic

than

the

bias

2-9

V~l

cathode

one-hundredth

voltage

AM-413/G,

small

signals.

to

increase,

tending

is

signals,

negative

grid

the

is

exceeds

to

shown

behaves

the

cycle,

and

half

current

resistance

almost

developed

the

R--1,

and

hold

in

like a conven-

all

respect respect

decreases.

phase

to

between

the

fact

ampli-

between

have between the

tube

On

polarity,

and

cathode

ez.

Figure

to

drive

circuit

regard-

The

Amplifier

which to is

and

the

As

the

input

and

smaller

shows

is

cut-off,

equals

than

resistance

on

V~l

can

V~l

As

the

grid

the

figure

cycle.

bias the

2-10.

is

cut-off

When

flows.

between

the

voltage

across R--1.

bias,

the

grid

to to

In

e2.

that

the

grid

will

the

that

out-

is

fixed

one-

very

out-

tube

R~2.

in

he-

he

is

out-

of

out-

ex-

R~l

ex-

to

cathode manner, The

negative

into

cut-off.

negative

current,

limits

the positive a

fixed

7.

BLOCK

A

block

is

shown

in

OFF,

the

Level

is

amplified through tacles. Control speaker applied VlOSA

cuit. the other into

The

Normally,

input

half

the

from

volume

depends Any

components

posite

polarity ponents ity

will ponents are

of

opposite

will

receive

of

the

stage. originated polarity output ferred

signal,

the

through

producing a positive

grids

present,

below the to put When and the rise by a in large

.001

positive

allow

of

the

the VlOlB compressor

of

input

Vl04B

lower

compressor

increase resulting and

VlOlB,

the

signal.

voltage

the

positive

peaks

Once

signal

which

magnitude

and

negative

limit.

DIAGRAM

diagram

in

figure

the

signal

Control.

by

the

output

The

monitoring

which

and

line

to

VlOSB

the

signal is

fed

cathode

on

the

of

the

tend

to

that

were

almost

However,

in

and

are

of

Vl02A

of

VIOlA

milliwatts voltage

VIOlA

compressor

input

are

signal,

which

resistance

in a lower

which

In

this

remains

peaks

are

the

tube

on

the

grid

remains

of peaks

of

2~11.

is

fed

From

Vl05

and

transformer

does

not

outputs.

from

secondary

compressor

VIOlA

is

fed

through

of

Vl02A.

difference

of

the

will

add

two

signals

he

cancelled

fed

through

polarity

twice

those

Vl04B

enter

cancelled

is

amplified

Vl04A

to

and

VlOlB

are

produced

and

VlOlB

is

signal

exceeds

allowed

starts

to

more

cause

VIOlA

to

the

output

in

the

voltage

positive

dynamic

has a greater

manner, a 38

essentially

of

clipped

is

has

zero.

the

of

Audio With

the

cut-off,

no

As a result,

output

any

Amplifier

the

zero.

signal

by

are

driving

any

effect

on

by

clipping

signal

Compressor

through a transformer

the

Level

Control

Vl06

and

is

then

to

the

output

jack

has a Monitor

affect

the

magnitude

the

of

Negative

plate

the

output

of

feedback

Vl06,

transformer.

has a balanced

and

VlOlB

to

the

cathode

The

between

two

signals

in

the

that

out.

upon

the

signal

Vl02A

out

Vl04B.

voltage

VlOlB.

are

fed

by

to

proportional

to

conduct.

increase

positive

signal.

are

grid

of

follower

output

the

that

output.

have

the

Those

the

input

entering

normal

components

with

of

the

by

Vl03B

Vl04B

which

When

cut-off.

into

the

Vl04B

conduct,

.001

milliwatts,

As

due

voltage

and

VlOlB

Each

is

accompanied

voltage

cutoff.

Vl02A.

two

same

transformer

Vl02A

amplification

output.

rectifies

no

When

compressor,

is

and

to

the

to

is

slight

from

resistance

shunting

db

variation

In

this

clipped.

the

tube

additional

the

plate

the

circuit

the

exceeding

AM~413/G

Switch

to

the

signa]

coupled

recep-

Level

of

the

is

and

to

input

cir-

Half

The

Vl02B

of

VHf2A

signals.

are

of

op-

Any

com-

polar-

signal

com-

and

that

the

same

The

and

trans-

the

is

fed

to

signal

is

signals

insufficient

the

out-

the

input.

VIOlA

output

of additional developed to

present

increase

by

a

Vl04B,

of

VIOlA

effect

on

in

input

ORIGINAL

2-3

2 Section

NAVSHIPS

AM-413/G

R2

and

91905

LS-169/G

THEORY OF

OPERATION

INPUT

B+

Figure

2-8.

R2

Figure

Basic

2-9.

Principle

Basic

Compressor

Rl

of

Compressor

OUTPUT

Circuit

OUTPUT

Circuit

2-4

B+

ORIGINAL